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e2a212a30d
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@6876 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
639 lines
137 KiB
HTML
639 lines
137 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<meta name="revised"
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content="$Id$">
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<title>Shorewall News</title>
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</head>
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<body>
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<h1 style="text-align: left;">Shorewall News and Announcements<br>
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</h1>
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<span style="font-weight: bold;">Tom Eastep<br>
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<br>
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</span>Copyright © 2001-2007 Thomas M. Eastep<br>
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<p>Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.2 or any
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later version published by the Free Software Foundation; with no Invariant
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Sections, with no Front-Cover, and with no Back-Cover Texts. A copy of the
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license is included in the section entitled “<span class="quote"><a
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href="GnuCopyright.htm" target="_self">GNU Free Documentation
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License</a></span>”.<br>
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</p>
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<p>July 15, 2007<br>
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</p>
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<hr style="width: 100%; height: 2px;">
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<p><strong>2007-07-15 Shorewall 3.4.5</strong></p>
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<pre>
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Problems Corrected in 3.4.5.
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1) DYNAMIC_ZONES=Yes can now coexist with Shorewall-perl's 'bport'
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zones. Those zones themselves may not be dynamically modified but
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the presence of bport zones no longer causes the 'shorewall add'
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command to fail.
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2) Shorewall's internal traffic shaper once again works when the 'sed'
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utility is provided by the Busybox package.
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3) Version 3.4.4 erroneously accepted the values On, Off, on, off, ON
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and OFF for the IP_FORWARDING option. These values were treated
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like 'Keep'. The listed values are now once again flagged as an
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error.
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4) If 'routeback' and 'detectnets' were specified on an interface,
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limited broadcasts (to 255.255.255.255) and multicasts were dropped
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when forwarded through the interface. This could cause
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broadcast-based and multicast applications to fail when running
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through a bridge with 'detectnets'.
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5) The 'hits' command works once again.
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6) IPSECFILE=ipsec (either explicitly or defaulted) works
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now. Previously, processing of the ipsec file was bypassed; often
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with a confusing "missing file" message.
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7) If DETECT_DNAT_IPADDRS=Yes in shorewall.conf but you did't have conntrack
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match support, then the generated script was missing 'done's.
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Other changes in 3.4.5.
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1) When a Shorewall release includes detection of an additional
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capability, existing capabilities files become out of
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date. Previously, this condition was not detected.
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Beginning with this release, each generated capabilities file
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contains a CAPVERSION specification which defines the capabilities
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version of the file. If the CAPVERSION in a capabilities file is
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less than the current CAPVERSION, then Shorewall will issue the
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following message:
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WARNING: <file> is out of date -- it does not contain all of
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the capabilities defined by Shorewall version <version>
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where
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<file> is the name of the capabilities file.
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<version> is the current Shorewall version.
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Existing capabilities files contain no CAPVERSION. When such a file
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is read, Shorewall will issue this message:
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WARNING: <file> may be not contain all of the capabilities defined
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by Shorewall version <version>
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2) When a directory is specified in a command such as 'start' or
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'compile', Shorewall now reads the shorewall.conf file (if any) in
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that directory before deciding which compiler to use. So if
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SHOREWALL_COMPILER is not specified in
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/etc/shorewall/shorewall.conf and the -C option was not specified
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on the run-line, then if Shorewall-perl is installed, the additional
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shorewall.conf file is read to see if it specifies a
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SHOREWALL_COMPILER.
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3) The 'save' command now uses iptables-save from the same directory
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containing iptables. Previously, iptables-save was located via the
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PATH setting.
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</pre>
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<p><strong>2007-06-17 Shorewall 3.4.4</strong></p>
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<pre>Problems corrected in 3.4.4:
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1) The commands "shorewall add <interface> <zone>" and "shorewall
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delete <interface> <zone>" no longer produce spurious error
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messages.
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2) The command "shorewall delete <interface> <zone>" now actually deletes
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entries when it successfully completes. Previously, it would appear
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to remove an entry, even when removing that entry should fail.
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3) Setting HIGH_ROUTE_MARKS=No no longer causes TC_EXPERT flagging.
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4) When run as root, the 'shorewall load' and 'shorewall reload'
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commands would fail if the LOGFILE setting in
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/etc/shorewall/shorewall.conf specified a non-existant file.
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5) Entries in /etc/shorewall/tcrules that specify both a source and
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destination port fail with the following diagnostic:
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iptables v1.3.3: multiport can only have one option
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6) Previously, Shorewall-lite did not allow DHCP traffic through an
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interface when the interface was a bridge with 'dhcp' specified
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unless there was a bridge on the administrative system with the
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same name.
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7) SOURCE and DEST are now flagged as invalid zone name to avoid
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problems with macros that use those names as keywords.
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8) Previously, Shorewall could *increase* the MSS under some
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circumstances. This possibility is now eliminated, provided that
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the system has TCPMSS match support (be sure to update your
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capabilities files!).
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9) Firewall zone names other than 'fw' no longer cause a error when
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IPSECFILE is not set or is set to 'ipsec'.
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10) The 'proxyarp' option on an interface was previously ignored when
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the /etc/shorewall/proxyarp file was empty.
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11) Previously, if action 'a' was defined then the following
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rule generated an error:
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a: z1 z2 ...
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The trailing ":" is now ignored.
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12) Previously, if a RATE/LIMIT was specified on a REJECT rule, the
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generated error messages referred to the rule as a DROP rule.
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13) The 'nolock' keyword was previously ignored on several
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/sbin/shorewall[-lite] commands.
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Other changes in 3.4.4:
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1) The accounting, masq, rules and tos files now have a 'MARK' column
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similar to the column of the same name in the tcrules file. This
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column allows filtering by MARK value.
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2) The "shorewall show zones" command now flags zone members that have
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been added using "shorewall add" by preceding them with a plus sign
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("+").
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Example:
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Shorewall 3.9.4 Zones at gateway - Mon May 14 07:48:16 PDT 2007
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fw (firewall)
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net (ipv4)
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eth0:0.0.0.0/0
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loc (ipv4)
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br0:0.0.0.0/0
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eth4:0.0.0.0/0
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eth5:0.0.0.0/0
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+eth1:0.0.0.0/0
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dmz (ipv4)
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eth3:0.0.0.0/0
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vpn (ipv4)
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tun+:0.0.0.0/0
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In the above output, "eth1:0.0.0.0/0" was dynamically added to the
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'loc' zone. As part of this change, "shorewall delete" will only
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delete entries that have been added dynamically. In earlier
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versions, any entry could be deleted although the ruleset was only
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changed by deleting entries that had been added dynamically.
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3) Eariler generations of Shorewall Lite required that remote root
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login via ssh be enabled in order to use the 'load' and 'reload'
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commands.
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Beginning with this release, you may define an alternative means
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for accessing the remote firewall system.
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Two new options have been added to shorewall.conf:
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RSH_COMMAND
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RCP_COMMAND
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The default values for these are as follows:
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RSH_COMMAND: ssh ${root}@${system} ${command}
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RCP_COMMAND: scp ${files} ${root}@${system}:${destination}
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Shell variables that will be set when the commands are envoked are
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as follows:
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root - root user. Normally 'root' but may be overridden using
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the '-r' option.
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system - The name/IP address of the remote firewall system.
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command - For RSH_COMMAND, the command to be executed on the
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firewall system.
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files - For RCP_COMMAND, a space-separated list of files to
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be copied to the remote firewall system.
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destination - The directory on the remote system that the files
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are to be copied into.
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4) You may now select the compiler to use on the command line using
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the '-C' option. This option is available on the following
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commands:
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check
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compile
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export
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load
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reload
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restart
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start
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try
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safe-start
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save-restart
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Example:
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shorewall try -C perl .</pre>
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<hr>
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<p><strong>2007-06-12 New Host for www.shorewall.net and
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ftp.shorewall.net</strong></p>
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<pre>I'm pleased to announce that Ty Christiansen and the folks at Master Mind
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Productions (http://mastermindpro.com) have volunteered to host
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www.shorewall.net and ftp.shorewall.net.
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The new site is up and running and I've just changed DNS to point to the new
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server. Let me know if you experience any problems.
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Please join me in thanking Ty and Master Mind for their support of the
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Shorewall project.</pre>
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<hr>
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<p><strong>2007-04-30 Shorewall 3.4.3</strong></p>
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<p><code>Problems corrected in Shorewall 3.4.3</code></p>
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<pre><code>1) The shorecap program was not loading modules correctly.</code></pre>
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<pre><code>2) The CHAIN variable is now set correctly before the 'maclog' script</code></pre>
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<pre><code> is invoked.</code></pre>
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<pre><code></code></pre>
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<pre><code>3) The 'shorewall load' and 'shorewall reload' commands redundently</code></pre>
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<pre><code> re-generated the capabilities file when it resided in the export</code></pre>
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<pre><code> directory.</code></pre>
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<pre><code></code></pre>
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<pre><code>4) Setting LOGFILE to the value of a shell variable from the params</code></pre>
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<pre><code> file now works.</code></pre>
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<pre><code></code></pre>
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<pre><code>5) The 'shorewall-lite restore' command can fail with a 'startup not</code></pre>
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<pre><code> enabled' error.</code></pre>
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<pre><code></code></pre>
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<pre><code>6) When ROUTE_FILTER=Yes in shorewall.conf, Shorewall no longer clears</code></pre>
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<pre><code> the rp_filter flag for all interfaces.</code></pre>
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<pre><code></code></pre>
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<pre><code>7) When LOG_MARTIANS=Yes in shorewall.conf, Shorewall no longer clears</code></pre>
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<pre><code> the log_martians flag for all interfaces.</code></pre>
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<pre><code></code></pre>
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<pre><code>8) The 'shorewall add' and 'shorewall delete' commands no longer fail</code></pre>
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<pre><code> with the message 'ERROR: Only one firewall zone may be defined'.</code></pre>
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<pre><code></code></pre>
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<pre><code>9) It was previously impossible to disable martian logging.</code></pre>
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<pre><code></code></pre>
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<pre><code>10) IP addresses (aliases) added by ADD_IP_ALIASES and ADD_SNAT_ALIASES</code></pre>
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<pre><code> are now correctly deleted when Shorewall stops.</code></pre>
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<pre><code></code></pre>
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<pre><code>11) The 'shorewall add' and 'shorewall delete' commands no longer fail</code></pre>
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<pre><code> with the error 'Only one firewall zone may be defined'.</code></pre>
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<pre><code></code></pre>
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<pre><code>12) The special 'detect' value now works correctly in the ADDRESSES</code></pre>
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<pre><code> column of /etc/shorewall/masq.</code></pre>
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<pre><code></code></pre>
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<pre><code>Other changes in Shorewall 3.4.3</code></pre>
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<pre><code></code></pre>
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<pre><code>1) A LOCKFILE option has been added to shorewall.conf. This file is</code></pre>
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<pre><code> used to serialize updates to the active firewall configuration.</code></pre>
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<pre><code> If not specified, the defaults are:</code></pre>
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<blockquote>
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<p><code>Shorewall - /var/lib/shorewall/lock</code></p>
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<p><code>Shorewall Lite - /var/lib/shorewall-lite/lock</code></p>
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</blockquote>
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<!-- Shorewall Release 3.0.5 -->
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<hr>
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<p><span style="font-weight: bold;">2007-04-08 Shorewall 3.2.10<br>
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</span><span style="font-weight: bold;"></span> </p>
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<pre>Problems Corrected in 3.2.10<br><br>1) Previously, if a 'start' or 'restart' command failed during the<br> compilation step, /sbin/shorewall erroneously returned an exit<br> status of zero.<br><br>2) If IMPLICIT_CONTINUE=Yes was in effect, then sub-zones received the<br> implicit CONTINUE policy for their intra-zone traffic (rather than<br> the implicit ACCEPT policy for such traffic). This could cause<br> intra-zone traffic to be rejected by rules in one of the parent<br> zones.<br><br>3) The "shorewall-[lite] [re]start and stop" commands reset the<br> proxy_arp flag on all interfaces on the system making it impossible<br> to control proxy arp manually with Shorewall installed. With this<br> change, shorewall will only clear proxy arp if there were entries in<br> /etc/shorewall/proxyarp the last time that Shorewall was<br> [re]started.<br> <br>4) The /usr/share/shorewall[-lite]/modules file has been updated for<br> kernel 2.6.20.<br><br>5) The /proc/net/ip_conntrack pseudo-file has been inexplicably<br> renamed /proc/net/nf_conntrack in kernel 2.6.20. The lib.cli<br> library has been updated to look for both files.<br><br>6) Tunnels of type 'ipsecnat' failed to work properly due to a missing<br> rule.<br><br>7) The 'shorecap' program was not loading modules correctly. <br><span style="font-family: sans-serif;"><span style="font-weight: bold;"></span></span></pre>
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<hr style="width: 100%; height: 2px;">
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<span style="font-family: sans-serif;"><span
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style="font-weight: bold;"></span></span><span
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style="font-weight: bold;">2007-04-01 Shorewall 3.4.2<br>
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</span><span style="font-weight: bold;"></span>
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<pre>Problems corrected in Shorewall 3.4.2<br><br>1) The /usr/share/shorewall[-lite]/modules file has been updated for<br> kernel 2.6.20.<br><br>2) The /proc/net/ip_conntrack pseudo-file has been inexplicably<br> renamed /proc/net/nf_conntrack in kernel 2.6.20. The lib.cli<br> library has been updated to look for both files.<br><br>3) Shoreall 3.4 was not consistent with respect to its treatment of<br> log level 'none' and 'none!' and built-in actions. In particular,<br> specifying 'none' with the Limit action produced a run-time error.<br> Shorewall now correctly suppresses generation of log messages when<br> a log level of 'none' or 'none!' is given to a built-in action.<br><br>4) Tunnels of type 'ipsecnat' would sometimes fail to work because of<br> a missing rule.<br></pre>
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<span style="font-weight: bold;"></span>
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<hr style="width: 100%; height: 2px;">
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<span style="font-weight: bold;">2007-03-15 Shorewall 3.4.1<br>
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</span><span style="font-weight: bold;"></span>
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<pre>Problems Corrected in 3.4.1<br><br>1) The "shorewall-[lite] [re]start and stop" commands reset the<br> proxy_arp flag on all interfaces on the system making it impossible<br> to control proxy arp manually with Shorewall installed. There was a<br> partial fix included in 3.4.0; unfortunately, it did not correct the<br> problem completely. Shorewall 3.4.1 includes the rest of the change <br> necessarey to only clear proxy arp if there were entries in<br> /etc/shorewall/proxyarp the last time that Shorewall was<br> [re]started.<br><br>2) If the log-prefix in a log message exceeded 29 characters, <br> 'shorewall restart' fails with 'truncate: command not found' and a<br> possible segmentation fault in iptables.<br><br>3) Log messages specifying a log tag had two spaces appended to the<br> log prefix. This could cause mysterious "log-prefix truncated"<br> messages. <br><br>4) When nested zones were defined in the /etc/shorewall/zones file and<br> IMPLICIT_CONTINUE=Yes was given in /etc/shorewall/shorewall.conf,<br> shell error messages ( usually '<zone>: not found' ) during<br> compilation resulted.<br><br>5) Use of CONTINUE policies lead to startup errors with a message<br> such as the following:<br><br> Applying Policies...<br> iptables v1.3.7: Couldn't load target<br> `CONTINUE':/usr/local/lib/iptables/libipt_CONTINUE.so: cannot open<br> shared object file: No such file or directory<br><br> Try `iptables -h' or 'iptables --help' for more information.<br> <br> ERROR: Command "/sbin/iptables -A net2c148 -j CONTINUE"<br> Failed<br><br>6) If there were hosts defined as 'critical' in<br> /etc/shorewall/routestopped then problems occured in two cases:<br><br> i) On a Shorewall Lite system when 'shorewall stop' or 'shorewall<br> clear' was issued.<br><br> ii) On Shorewall or Shorewall lite system when 'start' or 'restart'<br> failed during execution of the compiled script and there was no saved<br> configuration ('shorewall[-lite] save' has not been issued).<br><br> The symptoms were that the following shell messages were issued and<br> the 'critical' hosts were not enabled:<br><br> /var/lib/shorewall/.start: line nnn: source_ip_range: command not found<br> /var/lib/shorewall/.start: line nnm: dest_ip_range: command not found<br><br>Other changes in 3.4.1<br><br>1) Several changes are included which allow testing of experimental<br> versions of Shorewall on systems with 3.4.1 and later 3.4 releases<br> installed. Among these changes is the detection and reporting of<br> "Address Type Match" which may be used in future 3.4 releases.<br> These changes have no effect on normal Shorewall operation. </pre>
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<span style="font-weight: bold;"></span>
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<hr style="width: 100%; height: 2px;">
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<span style="font-weight: bold;">2007-03-10 Shorewall 3.4.0<br>
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</span><span style="font-weight: bold;"></span>
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<pre>Shorewall 3.4.0<br><br>Release Highlights<br><br>1) Shorewall can now be tailored to reduce its footprint on embedded<br> systems. As part of this change, actions are now completely<br> optional.<br><br> See http://www.shorewall.net/Modularization.html for details.<br><br>2) Exclusion is now possible in /etc/shorewall/hosts. This is required<br> for bridge/firewalls under kernel 2.6.20 and later.<br><br> See http://www.shorewall.net/NewBridge.html.<br><br>3) Shorewall and Shorewall Lite now include man pages. There is a <br> man page for shorewall(8), one for shorewall-lite(8) and one for<br> each configuration file. As part of this change, all documentation<br> has been removed from Shorewall configuration files. This should<br> make it easier from users to upgrade from one release to the next<br> since the configuration files will only change when column is added<br> or renamed.<br><br> See http://www.shorewall.net/manpages/Manpages.html<br><br>4) Shorewall now remembers the changes that it has made to routing as<br> a result of entries in /etc/shorewall/providers and<br> /etc/shorewall/route_rules and reverses those changes when<br> appropriate.<br><br>Problems Corrected in 3.4.0 Final.<br><br>1) In the rules file, following the action with "!" is supposed to<br> exempt the rule from being suppressed by OPTIMIZE=1. That feature<br> was not working.<br><br>2) If both a macro body and a macro invocation contained an entry in the<br> SOURCE or DEST column, then compilation failed with the error:<br><br> merge_macro_source_dest: command not found<br><br>3) An obscure bug in rule activation having to do with the new<br> exclusion feature in /etc/shorewall/hosts has been corrected.<br><br>4) The "shorewall-[lite] [re]start and stop" commands reset the<br> proxy_arp flag on all interfaces on the system making it impossible<br> to control proxy arp manually with Shorewall installed. With this<br> change, shorewall will only clear proxy arp if there were entries in<br> /etc/shorewall/proxyarp the last time that Shorewall was<br> [re]started.<br><br>New Features in Shorewall 3.4:<br><br>1) In order to accomodate small embedded applications, Shorewall 3.4<br> is now modularized. In addition to the base files, there are<br> loadable "libraries" that may be included or omitted from an<br> embedded system as required.<br><br> Loadable Shorewall libraries reside in /usr/share/shorewall/ and<br> have names that begin with "lib.". The following libraries are<br> included in Shorewall 3.4:<br><br> - lib.accounting. Must be available if you include entries in<br> /etc/shorewall/accounting.<br><br> - lib.actions. Must be available if you do not specify<br> USE_ACTIONS=No in /etc/shorewall/shorewall.conf.<br><br> - lib.base. The base Shorewall library required by all programs,<br> including compiled firewall scripts. This library is also<br> released as part of Shorewall Lite and is installed in<br> /usr/share/shorewall-lite/.<br><br> - lib.cli. Library containing the code common to /sbin/shorewall,<br> /sbin/shorewall-lite. This library is also released as part of<br> Shorewall Lite and is installed in /usr/share/shorewall-lite/.<br><br> - lib.config. Library containing the code that is common to<br> /usr/share/shorewall/compiler and /usr/share/shorewall/firewall. <br><br> - lib.dynamiczones. Must be available if you specify<br> DYNAMIC_ZONES=Yes in shorewall.conf.<br><br> - lib.maclist. Must be available if you specify the 'maclist'<br> option in /etc/shorewall/interfaces or /etc/shorewall/hosts.<br><br> - lib.nat. Must be available if you have entries in<br> /etc/shorewall/masq, /etc/shorewall/nat or /etc/shorewall/netmap<br> or if you use DNAT or REDIRECT rules.<br><br> - lib.providers. Must be available if you have entries in<br> /etc/shorewall/providers.<br><br> - lib.proxyarp. Must be available if you have entries in<br> /etc/shorewall/proxyarp or if you specify the 'proxyarp' option<br> in /etc/shorewall/interfaces.<br><br> - lib.tc. Must be available if you have entries in<br> /etc/shorewall/tcdevices and /etc/shorewall/tcclasses.<br><br> - lib.tcrules. Must be available if you have entries in<br> /etc/shorewall/tcrules.<br><br> - lib.tunnels. Must be available if you have entries in<br> /etc/shorewall/tunnels.<br><br> Embedded applications can further decrease the size of the Shorewall<br> footprint by:<br><br> - Omitting the macro files.<br> - Omitting all unused extension scripts.<br><br> See http://www.shorewall.net/Modularization.html for additional<br> details.<br><br>2) As hinted in the previous bullet, there is a new USE_ACTIONS option<br> in /etc/shorewall/shorewall.conf. Shorewall actions can be very<br> powerful but they also require a lot of code to implement. Embedded<br> applications can omit that code by setting<br> USE_ACTIONS=No. Shorewall will ignore all action-related files<br> including /usr/share/shorewall/actions.std and<br> /etc/shorewall/actions. Builtin actions will still be available for<br> use in rules and macros.<br><br> The 'Limit' action has been converted to a builtin so that Limit is<br> available even when USE_ACTIONS=No.<br><br> See the next item for more information.<br><br>3) Prior to Shorewall 3.4, default actions were specified in<br> /usr/share/shorewall/actions.std or in /etc/shorewall/actions.<br><br> This approach has two drawbacks:<br><br> a) All DROP policies must use the same default action and all<br> REJECT policies must use the same default action.<br><br> b) Now that we have modularized action processing (see the New<br> Features section below), we need a way to define default rules<br> for a policy that does not involve actions.<br><br> The solution is two-fold:<br><br> - Four new options have been added to the<br> /etc/shorewall/shorewall.conf file that allow specifying the<br> default action for DROP, REJECT, ACCEPT and QUEUE.<br><br> The options are DROP_DEFAULT, REJECT_DEFAULT, ACCEPT_DEFAULT and<br> QUEUE_DEFAULT.<br><br> DROP_DEFAULT describes the rules to be applied before a<br> connection request is dropped by a DROP policy; REJECT_DEFAULT<br> describes the rules to be applied if a connection request is<br> rejected by a REJECT policy. The other two are similar for<br> ACCEPT and QUEUE policies.<br><br> The value assigned to these may be:<br><br> a) The name of an action.<br> b) The name of a macro<br> c) 'None' or 'none'<br><br> The default values are:<br><br> DROP_DEFAULT="Drop"<br> REJECT_DEFAULT="Reject"<br> ACCEPT_DEFAULT=none<br> QUEUE_DEFAULT=none<br><br> If USE_ACTIONS=Yes, then these values refer to action.Drop and<br> action.Reject respectively. If USE_ACTIONS=No, then these values<br> refer to macro.Drop and macro.Reject.<br><br> If you set the value of either option to "None" then no default<br> action will be used and the default action or macro (if any)<br> must be specified in /etc/shorewall/policy<br><br> - The POLICY column in /etc/shorewall/policy has been extended.<br><br> In /etc/shorewall/policy, when the POLICY is DROP, REJECT,<br> ACCEPT or QUEUE then the policy may be followed by ":" and one<br> of the following:<br><br> a) The word "None" or "none". This causes any default<br> action defined in /etc/shorewall/shorewall.conf<br> to be omitted for this policy.<br> b) The name of an action (requires that USE_ACTIONS=Yes<br> in shorewall.conf). That action will be invoked<br> before the policy is enforced.<br> c) The name of a macro. The rules in that macro will<br> be applied before the policy is enforced. This<br> does not require USE_ACTIONS=Yes.<br><br> Example:<br><br> #SOURCE DEST POLICY LOG<br> # LEVEL<br> loc net ACCEPT<br> net all DROP:MyDrop info<br> #<br> # THE FOLLOWING POLICY MUST BE LAST<br> #<br> all all REJECT:MyReject info<br><br>4) For users whose kernel and iptables have Extended MARK Target<br> support, it is now possible to logically AND or OR a value into the<br> current packet mark by preceding the mark value (and optional mask)<br> with an ampersand ("&") or vertical bar ("|") respectively.<br><br> Example: To logically OR the value 4 into the mark value for<br> packets from 192.168.1.1:<br><br> #MARK SOURCE<br> |4 192.168.1.1<br><br>5) Previously, zone names were restricted to five characters in<br> length. That limit derives from the --log-prefix in Netfilter log<br> messages which must be 29 bytes or less in length. With the<br> standard Shorewall LOGFORMAT, that leaves 11 characters for the<br> chain name; given that many chain names are of the form<br> <zone1>2<zone2>, that gives a maximum zone name length of 5.<br><br> Beginning with this release, the maximum length of a zone name is<br> dependent on the LOGFORMAT (the maximum length may never be less<br> than 5 but it may be greater than 5). For example, setting<br> LOGFORMAT="FW:%s:%s:" will allow zone names of up to 8 characters.<br><br>6) Netfilter provides support for attachment of comments to Netfilter<br> rules. Comments can be up to 255 bytes in length and are visible<br> using the "shorewall show <chain>", "shorewall show nat",<br> "shorewall show mangle" and "shorewall dump" commands. Comments are<br> delimited by '/* ... */" in the output.<br><br> Beginning with Shorewall 3.4, you may place COMMENT lines in the<br> /etc/shorewall/rules, /etc/shorewall/tcrules, /etc/shorewall/nat<br> and /etc/shorewall/masq files and in action files. The remainder of<br> the line is treated as a comment and it will be attached as a<br> Netfilter comment to the rule(s) generated by succeding entries<br> in the file.<br><br> Note: Do not prefix the comment with "#". Shorewall's two-pass<br> compiler strips off "#" comments in the first pass and processes<br> COMMENT lines in the second pass. Hence, by the time that COMMENT<br> is processed, the "#" and everything following it has been removed<br> (see example below).<br><br> To stop the current comment from being attached to further<br> rules, simply include COMMENT on a line by itself (so that the<br> following rules will have no comment) or specify a new COMMENT.<br><br> If you do not have Comment support in your iptables/kernel (see the<br> output of "shorewall[-lite] show capabilities") then COMMENTS are<br> ignored with this warning:<br><br> COMMENT ignored -- requires comment support in iptables/Netfilter<br><br> Example from my rules file:<br><br> #SOURCE SOURCE DEST PROTO DEST PORT(S)<br><br> COMMENT Stop Microsoft Noise<br><br> REJECT loc net tcp 137,445<br> REJECT loc net udp 137:139<br><br> COMMENT # Stop comment from being attached to rules below<br><br> The output of "shorewall show loc2net" includes (folded):<br><br> 0 0 reject tcp -- * * 0.0.0.0/0<br> 0.0.0.0/0 multiport dports 137,445 /* Stop Microsoft Noise */<br> 0 0 reject udp -- * * 0.0.0.0/0<br> 0.0.0.0/0 udp dpts:137:139 /* Stop Microsoft Noise */<br><br>7) A new macro (macro.RDP) has been added for Microsoft Remote<br> Desktop. This macro was contributed by Tuomo Soini.<br><br>8) A new 'maclog' extension file has been added. This file is<br> processed just before logging based on the setting of<br> MACLIST_LOG_LEVEL is done. When the extension is invoked, the CHAIN<br> variable will contain the name of the chain where rules should be<br> inserted. Remember that if you have specified MACLIST_TABLE=mangle,<br> then your run_iptables commands should include "-t mangle".<br><br>9) The SUBNET column in /etc/shorewall/masq has been renamed SOURCE to<br> more accurately describe the contents of the column.<br><br>10) Previously, it was not possible to use exclusion in<br> /etc/shorewall/hosts. Beginning with this release, you may now use<br> exclusion lists in entries in this file. Exclusion lists are<br> discussed at:<br><br> http://www.shorewall.net/configuration_file_basics.htm#Exclusion.<br><br> Example:<br><br> loc eth0:192.168.1.0/24!192.168.1.4,192.168.1.16/28<br><br> In that example, the 'loc' zone is defined to be the subnet<br> 192.168.1.0/24 interfacing via eth0 *except* for host 192.168.1.4<br> and hosts in the sub-network 192.168.1.16/28.<br><br>11) New "shorewall[-lite] show ip" and "shorewall[-lite] show routing"<br> commands have been added. The first produces the same output as "ip<br> addr ls". The second produces a report about your routing rules and<br> tables.<br><br>12) Beginning with this release, Shorewall and Shorewall Lite will<br> share common change logs and release notes.<br><br>13) In Shorewall versions prior to 3.4, multiple jumps to a '2all'<br> chain could be generated in succession.<br><br> Example from an earlier shorewall version:<br><br> gateway:~ # shorewall-lite show eth2_fwd<br> Shorewall Lite 3.4.0-Beta1 Chains eth2_fwd at gateway - Thu Oct 19 08:54:37 PDT 2006<br><br> Counters reset Thu Oct 19 08:34:47 PDT 2006<br><br> Chain eth2_fwd (1 references)<br> pkts bytes target prot opt in out source destination<br> 0 0 dynamic all -- * * 0.0.0.0/0 0.0.0.0/0 state INVALID,NEW<br> 0 0 wifi2all all -- * eth0 0.0.0.0/0 0.0.0.0/0<br> 0 0 wifi2all all -- * br0 0.0.0.0/0 0.0.0.0/0<br> 0 0 wifi2all all -- * eth3 0.0.0.0/0 0.0.0.0/0<br> 0 0 wifi2all all -- * tun+ 0.0.0.0/0 0.0.0.0/0<br> gateway:~ #<br><br> This redundancy may be eliminated by setting OPTIMIZE=1 in shorewall.conf.<br><br> gateway:~ # shorewall-lite show eth2_fwd<br> Shorewall Lite 3.4.0-Beta1 Chains eth2_fwd at gateway - Thu Oct 19 09:15:24 PDT 2006<br><br> Counters reset Thu Oct 19 09:15:19 PDT 2006<br><br> Chain eth2_fwd (1 references)<br> pkts bytes target prot opt in out source destination<br> 0 0 dynamic all -- * * 0.0.0.0/0 0.0.0.0/0 state INVALID,NEW<br> 0 0 wifi2all all -- * * 0.0.0.0/0 0.0.0.0/0<br> gateway:~ #<br><br> Note that with OPTIMIZE=1, traffic destined for an<br> interface/Address that falls outside of all defined zones may now<br> be logged out of a '2all' chain rather than out of the FORWARD<br> chain.<br><br> The OPTIMIZE setting also controls the suppression of redundant<br> wildcard rules (those specifying "all" in the SOURCE or DEST<br> column). A wildcard rule is considered to be redundant when it<br> has the same ACTION and Log Level as the applicable policy.<br><br> Example:<br><br> /etc/shorewall/policy<br><br> #SOURCE DEST POLICY LEVEL<br> loc net ACCEPT<br><br> /etc/shorewall/rules<br><br> #ACTION SOURCE DEST PROTO DEST<br> # PORT(S)<br> ...<br> ACCEPT all all icmp 8<br><br> OPTIMIZE=0<br><br> gateway:~ # shorewall show loc2net<br> Shorewall Lite 3.4.0-Beta1 Chains loc2net at gateway - Thu Oct 26 07:55:03 PDT 2006<br><br> Counters reset Thu Oct 26 07:54:58 PDT 2006<br><br> Chain loc2net (1 references)<br> pkts bytes target prot opt in out source destination<br> ...<br> 0 0 DROP all -- * * !192.168.0.0/22 0.0.0.0/0<br> 0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0 icmp type 8<br> 0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0<br><br> gateway:~<br><br> OPTIMIZE=1<br><br> gateway:~ # shorewall show loc2net<br> Shorewall Lite 3.4.0-Beta1 Chains loc2net at gateway - Thu Oct 26 07:57:12 PDT 2006<br><br> Counters reset Thu Oct 26 07:56:38 PDT 2006<br><br> Chain loc2net (1 references)<br> pkts bytes target prot opt in out source destination<br> ...<br> 0 0 DROP all -- * * !192.168.0.0/22 0.0.0.0/0<br> 0 0 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0<br><br> gateway:~<br><br> If you really want a rule that duplicates the policy, follow the<br> action with "!":<br><br> #ACTION SOURCE DEST PROTO DEST<br> # PORT(S)<br> ...<br> ACCEPT! all all icmp 8<br><br>14) IP Address ranges are now allowed in the drop, reject, allow and<br> logdrop shorewall[-lite] commands.<br><br>15) Previously, Shorewall has not attempted to undo the changes it has<br> made to the firewall's routing as a result of entries in<br> /etc/shorewall/providers and /etc/shorewall/routes. Beginning with<br> this release, Shorewall will attempt to undo these changes.<br><br> When Shorewall starts or is restarted and there are entries in<br> /etc/shorewall/providers, Shorewall will capture the contents<br> of /etc/shorewall/rt_tables and will restore that database when<br> Shorewall is stopped or restarted. Similarly, the default route<br> will be captured the first time that you [re]start Shorewall using<br> this version and will be restored under the following conditions:<br><br> a) shorewall stop<br> b) shorewall clear<br> c) shorewall restart or restore and there are no entries in<br> /etc/shorewall/providers.<br><br> Once the default route has been restored, Shorewall will delete<br> the saved copy so that it will once again be captured at the next<br> shorewall start or shorewall restore.<br><br>16) Shorewall no longer includes policy matches in its generated<br> ruleset when no IPSEC zones or IPSEC networks are defined (IPSEC<br> networks are defined using the 'ipsec' option in<br> /etc/shorewall/hosts).<br><br>17) The Makefile installed in /usr/share/shorewall/configfiles/ is now<br> the same one mentioned at<br> http://www.shorewall.net/CompiledPrograms.html.<br><br> Once the file is copied into an export directory, you modify the<br> setting of the HOST variable to match the name of the remote<br> firewall.<br><br> The default target is the "firewall" script so "make" compiles the<br> firewall script if any of the configuration files have<br> changed. "make install" builds "firewall" if necessary then<br> installs it on the remote firewall. "make capabilities" will<br> generate the "capabilities" file. "make save" will save the running<br> configuration on the remote firewall.<br><br>18) Shorewall and Shorewall Lite now include the following manpages. <br><br> shorewall-accounting(5)<br> shorewall-actions(5)<br> shorewall-blacklist(5)<br> shorewall.conf(5)<br> shorewall-ecn(5)<br> shorewall-exclusion(5)<br> shorewall-hosts(5)<br> shorewall-interfaces(5)<br> shorewall-lite.conf(5)<br> shorewall-lite(8)<br> shorewall-maclist(5)<br> shorewall-masq(5)<br> shorewall-nat(5)<br> shorewall-nesting(5)<br> shorewall-netmap(5)<br> shorewall-params(5)<br> shorewall-policy(5)<br> shorewall-providers(5)<br> shorewall-proxyarp(5)<br> shorewall-rfc1918(5)<br> shorewall-route_rules(5)<br> shorewall-routestopped(5)<br> shorewall-rules(5)<br> shorewall-tcclasses(5)<br> shorewall-tcdevices(5)<br> shorewall-tcrules(5)<br> shorewall-template(5)<br> shorewall-tos(5)<br> shorewall-tunnels(5)<br> shorewall(8)<br> shorewall-zones(5)<br><br> Now that the manpages are in place, command-specific help has been<br> removed since it duplicates information in the man pages.<br><br>19) From the beginning, the Shorewall configuration files in<br> /etc/shorewall/ have contained documentary comments. While these<br> comments are useful, they present an upgrade problem. Beginning<br> with this release, these comments are removed from the<br> configuration files themselves and are replaced by the manpages<br> described in the preceding release note entry.<br><br>20) Shorewall now uses tc fwmark filters to classify packets for<br> traffic shaping when the DEVICE isn't an interface described in<br> /etc/shorewall/interfaces. This is in preparation for the upcoming<br> change to the way that --physdev-out works in iptables/Netfilter;<br> that change is now scheduled for kernel 2.6.20.<br><br>21) If your kernel and iptables have extended multiport support, then<br> Shorewall will use that support for the destination port when<br> generating rules from entries in the /etc/shorewall/tcrules file.<br>22) The 'safe-start' and 'safe-restart' command have been<br> improved. Both now accept an optional directory name; if supplied,<br> Shorewall will look first in that directory for configuration<br> files.<br><br> The commands have also been enhanced to only restore the<br> configuration once in the event of a failure. Previously, if there<br> was a current 'save' command in effect, then that configuration<br> would be restored on a failure and then the last-running<br> configuration would be restored.<br><br>23) The 'try' command has been reimplemented with new semantics. <br><br> If Shorewall is started then the firewall state is saved to a<br> temporary saved configuration (/var/lib/shorewall/.try). Next, if<br> Shorewall is currently started then a restart command is issued;<br> otherwise, a start command is performed. if an error occurs during<br> the compliation phase of the restart or start, the command<br> terminates without changing the Shorewall state. If an error occurs<br> during the restart phase, then a 'shorewall restore' is performed<br> using the saved configuration. If an error occurs during the start<br> phase, then Shorewall is cleared. If the start/restart succeeds<br> and a timeout is specified then a 'clear' or 'restore' is performed<br> after timeout seconds. <br><br>24) The syntax of the 'export' command has been made slightly<br> friendlier.<br><br> The old syntax:<br><br> export <directory1> [user@]system:[<directory2>]<br><br> It is now:<br><br> export <directory1> [user@]system[:<directory2>]<br><br> In other words, if you don't need to specify <directory2>, you may<br> omit the colon (":") following the system name.<br> <br> The old syntax is still accepted -- that is, you can still <br> type:<br><br> export firewall2:<br><br> which is equivalent to<br><br> export firewall2<br><br>25) Shorewall commands may be speeded up slightly by using a<br> 'capabilities' file. The 'capabilities' file was originally<br> designed for use with Shorewall Lite and records the<br> iptables/Netfilter features available on the target system.<br><br> To generate a capabilities file, execute the following command as<br> root:<br><br> shorewall show -f capabilities > /etc/shorewall/capabilities<br><br> When you install a new kernel and/or iptables, be sure to generate<br> a new capabilities file.<br> <br>26) When syslogd is run with the -C option (which in some<br> implementations causes syslogd to log to an in-memory circular<br> buffer), /sbin/shorewall will now use the 'logread' command to read<br> the log from that buffer. This is for combatibility with OpenWRT.<br><br>27) There is now a ":T" qualifier in /etc/shorewall/tcrules which<br> causes the resulting rule to be inserted into the POSTROUTING<br> chain.<br><br>28) The program /usr/share/shorewall/wait4ifup can be used to wait for<br> a network device (such as a ppp device) to reach the UP state. <br> <br> /usr/share/shorewall/wait4ifup <interface> [ <seconds> ]<br><br> The program will wait for up to <seconds> seconds for the <br> named <interface> to reach the UP state. If <seconds> is not given,<br> 60 seconds is assumed.<br><br> The exit status is zero if <interface> comes up within <seconds><br> seconds and non-zero otherwise.<br><br>29) Previously, 'ipsecnat' tunnels allowed AH traffic by default<br> (unless 'isecnat:noah' was given). Given that AH is incompatible<br> with nat-traversal, 'ipsecnat' now implies 'ipsecnat:noah'.<br><br>30) Shorewall now generates half as many rules as previously in the<br> 'blacklst' chain when BLACKLIST_LOGLEVEL is specified.<br><br>31) Beginning with Shorewall 3.4.0, if EXPORTPARAMS=No in<br> shorewall.conf then Shorewall will not process<br> /etc/shorewall/params when the compiled script is run. With<br> EXPORTPARAMS=No, any shell variables needed at run-time must be set<br> in /etc/shorewall/init.<br><br> In a Shorewall/Shorewall Lite environment, this allows<br> /etc/shorewall/params to be written to run exclusively<br> on the administrative system while /etc/shorewall/init runs<br> exclusively on the firewall system.<br><br> So shell variables required at compile time may be set in<br> /etc/shorewall/params and those required at run-time may be set in<br> /etc/shorewall/init.<br><br> Note 1: If you need shell variables values in your<br> /etc/shorewall/stop or /etc/shorewall/stopped script, then you need<br> to set their values in /etc/shorewall/stop. /etc/shorewall/init is<br> not invoked during processing of the 'stop' and 'clear' commands.<br><br> Note 2: EXPORTPARAMS was actually introduced in Shorewall version<br> 3.2.9. It is described here for the benefit of those who did not<br> install that version.<br></pre>
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<span style="font-weight: bold;">2007-01-16 Shorewall 3.2.9<br>
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<pre>Problems Corrected in 3.2.9<br><br>1) While most distributions store the Shorewall Lite compiled program<br> in /var/lib/shorewall-lite/, Shorewall includes features that allow<br> that location to be changed on a per-distribution basis. The<br> default for a particular distribution may be determined by the<br> command "shorewall[-lite] show config".<br><br> teastep@lists:~/shorewall/trunk$ shorewall show config<br> Default CONFIG_PATH is /etc/shorewall:/usr/share/shorewall<br> LITEDIR is /var/lib/shorewall-lite<br> teastep@lists:~/shorewall/trunk$<br><br> The LITEDIR setting is the location where the compiled script<br> should be placed. Unfortunately, the "shorewall [re]load" command<br> previously used the setting on the administrative system rather<br> than the one from the firewall system so it was possible for that<br> command to upload the compiled script to the wrong directory.<br><br> To work around this problem, Shorewall now determines the LITEDIR<br> setting on the firewall system and uses that setting for uploading<br> the compiled script and its companion .conf file.<br><br>2) Previously, IP ranges and ipset names were handled incorrectly in<br> the last column of the maclist file with the result that run-time<br> errors occured.<br><br>3) The new SIP and H323 Netfilter helper modules were not being<br> automatically loaded by Shorewall. They have now been added to the<br> /usr/share/shorewall[-lite]/modules files.<br><br>Other Changes in 3.2.9<br><br>1) Previously, 'ipsecnat' tunnels allowed AH traffic by default<br> (unless 'isecnat:noah' was given). Given that AH is incompatible<br> with nat-traversal, 'ipsecnat' now implies 'ipsecnat:noah'.<br><br>2) A macro that handles SixXS has been contributed by Christian<br> Roessner.<br><br>3) It is rather difficult to code a 'params' file that assigns other<br> than constant values such that it works correctly with Shorewall<br> Lite. To work around this problem, a new EXPORTPARAMS option<br> has been added to shorewall.conf. When EXPORTPARAMS=No, the<br> 'params' file is no longer copied to the compiler output.<br><br> With EXPORTPARAMS=No, if you need to set environmental variables on<br> the firewall system for use by your extension scripts, then do so<br> in the init extension script.<br><br> The default is EXPORTPARAMS=Yes to retain the current behavior. So<br> if you are happy with the current behavior, you need make no change<br> to your shorewall.conf file.<br></pre>
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<pre>Problems Corrected in 3.2.8<br><br>1) The 'ash' shell produced an error when processing an entry with a<br> log tag from /etc/shorewall/rules.<br><br>2) If the file /etc/shorewall/init did not exist, then the compiler<br> would incorrectly copy /usr/share/shorewall/init into the<br> compiled script. /usr/share/shorewall/init is a symbolic link<br> to the Shorewall init script (usually /etc/init.d/shorewall).<br><br>3) Previously, "ipp2p:udp" was incorrectly rejected in the PROTO<br> column of an action definition.<br><br>Other Changes in 3.2.8.<br><br>1) New macros for network printing protocols have been added,<br> courtesy of Tuomo Soini. Tuomo also provided a macro for TFTP.<br><br> The print-oriented macros are:<br><br> macro.IPP<br> macro.Jetdirect<br> macro.Printer<br></pre>
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<pre><span style="font-weight: bold;">2006-12-14 Shorewall 3.2.7</span><br></pre>
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<pre>Problems Corrected in 3.2.7<br><br>1) Handling of saved ipsets in /etc/shorewall/ipsets is broken when<br> used on a system running Shorewall Lite. If there is a file named<br> 'ipsets' on the CONFIG_PATH when the firewall script is compiled,<br> then the compiled script attempts to restore the ipsets from that<br> file (which may not exist on the firewall system).<br><br>2) The 'try' command failed on systems whose /bin/sh is Busybox ash:<br><br> /sbin/shorewall: export: 2158: Illegal option -n<br><br>3) Previously, Shorewall has assumed that the root user is named<br> 'root'. Beginning with this release, the root user may have a<br> different name. This required the addition of an '-r' option for<br> the 'shorewall load' and 'shorewall reload' commands.<br><br> [re]load [ -e ] [ -c ] [ -r <root user> ] [ <dir> ] system<br><br> Example: shorewall reload -r foobar firewall<br><br>4) On systems with a light-weight shell such as ash or dash for /bin/sh,<br> the output of "shorewall show macros" was garbled.<br><br>Other Changes in 3.2.7<br><br>1) Prior to this release, on firewall systems with Shorewall Lite<br> installed, the local modules file is used to determine which kernel<br> modules to load. Beginning with this release, if there is a<br> 'modules' file in the export directory when the firewall script is<br> compiled, then that file will be copied into the compiled script<br> and used on the firewall system.<br><br>2) When syslogd is run with the -C option (which in some<br> implementations causes syslogd to log to an in-memory circular<br> buffer), /sbin/shorewall will now use the 'logread' command to read<br> the log from that buffer. This is for combatibility with OpenWRT.<br><br>3) Failures of the start, restart and restore commands are now logged<br> using 'logger'. These failures are logged with the 'kern' facility <br> and 'err' priority. As part of this change, normal state changes<br> are now logged with the 'kern' facility and 'info' priority.<br></pre>
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<span style="font-weight: bold;">2006-11-18 Shorewall 3.2.6<br>
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<pre>Problems Corrected in 3.2.6.<br><br>1) When using a light-weight shell (e.g., ash) with multiple<br>providers, the /etc/iproute2/rt_tables database may become corrupted.<br><br>2) A startup error occurred when the LENGTH or TOS column was<br> non-empty in /etc/shorewall/tcrules.<br><br>3) A startup error resulted when whitespace as included in LOGFORMAT.<br><br>4) Previously, when conntrack match support was not available, the<br> 'norfc1918' option on an interface or host group was incorrectly<br> filtering IPSEC traffic whose source IP address was reserved by RFC<br> 1918.<br><br>5) If a DNAT or REDIRECT rule was used where the effective policy<br> between the source and final destination zones is ACCEPT, the ACCEPT<br> part of the rule was not generated. This was intended as an<br> optimizaiton but it could lead to confusing results if there was a<br> DROP or REJECT rule following.<br><br> This optimization has been removed. You may always use DNAT- and<br> REDIRECT- to suppress generation of the ACCEPT rule.<br><br>6) Shorewall[-lite] previously would return an error exit status to a<br> "start" command where Shorewall was already running. It not returns<br> a "success" status.<br><br>7) The install.sh scripst have been corrected to work properly when <br> used to create packages on Slackware and Arch Linux.<br><br>5) A change in version 3.2.5 broke Mac Filtration in some<br> cases. Result was:<br><br> Setting up MAC Filtration -- Phase 1...<br> iptables v1.3.6: policy match: invalid policy `--dir'<br> Try `iptables -h' or 'iptables --help' for more information.<br> ERROR: Command "/sbin/iptables -A eth1_fwd -s 0.0.0.0/0 -m state <br> --state NEW -m policy --pol --dir in -j eth1_mac" Failed<br><br>6) At VERBOSITY 1 and higher, the 'shorewall add' and 'shorewall<br> delete' commands generated a fractured message. The message<br> contents depended in the setting of IPSECFILE as follows:<br><br> IPSECFILE=ipsec<br><br> ipsec...<br><br> IPSECFILE=zones<br><br> IPSEC...<br><br> The messages have been corrected and are only produced at VERBOSITY<br> 2 and higher as follows:<br><br> IPSECFILE=ipsec<br><br> Processing /etc/shorewall/ipsec...<br><br> IPSECFILE=zones<br><br> Processing IPSEC...<br><br>7) Previously, when <action>:none appeared in a rule, the name of the<br> action chain created was preceded by "%" and might have a one- or<br> two-digit number appended. If both <action> and <action>:none<br> appeared, then two chains were created. This has been corrected<br> such that <action> and <action>:none are treated identically.<br><br>8) If SAVE_IPSETS=Yes in shorewall.conf, the "shorewall[-lite] save"<br> command produced error messages as follows:<br><br> Dynamic Rules Saved<br> Currently-running Configuration Saved to /var/lib/shorewall/restore<br> grep: /var/lib/shorewall/restore-base: No such file or directory<br> grep: /var/lib/shorewall/restore-base: No such file or directory<br> Current Ipset Contents Saved to<br> /var/lib/shorewall/restore-ipsets<br><br>9) If BRIDGING=No in shorewall.conf, then an attempt to define a zone<br> using ipsets fails as follows:<br><br> ERROR: BRIDGING=Yes is needed for this zone definition: z eth0:+iset<br><br>Other Changes in 3.2.6.<br><br>1) The "shorewall [re]load" command now supports a "-c" option.<br><br> Example:<br><br> shorewall reload -c gateway<br><br> When -c is given, Shorewall will capture the capabilities of the<br> remote system to a file named "capabilities" in the export<br> directory before compiling the configuration.<br><br> If the file "capabilities" does not currently exist in the <br> export directory then "-c" is automatically assumed.<br><br>2) If 0 (zero) is specified for the IN-BANDWIDTH in<br> /etc/shorewall/tcdevices then no ingress qdisc will be created for<br> the device.<br></pre>
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<span style="font-weight: bold;">2006-10-28 Shorewall 3.2.5<br>
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<pre>Problems Corrected in 3.2.5<br><br>1) Entries such as the following in /etc/shorewall/masq generate a<br> run-time error:<br><br> eth0 eth1!192.168.1.12 206.124.146.176<br><br> Omitting the exclusion (!192.168.1.12) avoids the error.<br><br>2) Previously, the 'provider' portion of the packet mark was not being<br> cleared after routing for traffic that originates on the firewall<br> itself.<br><br>3) In prior releases, it was not possible to mark an outgoing packet<br> with a high mark (HIGH_ROUTE_MARKS=Yes) when the packet originated<br> on the firewall itself.<br><br>4) The detected capabilities were not displayed by 'shorewall dump'<br> when the effective VERBOSITY was less than 2.<br><br>Other changes in 3.2.5<br><br>1) For users whose kernel and iptables have Extended MARK Target<br> support, it is now possible to logically AND or OR a value into the<br> current packet mark by preceding the mark value (and optional mask)<br> with an ampersand ("&") or vertical bar ("|") respectively.<br><br> Example: To logically OR the value 4 into the mark value for<br> packets from 192.168.1.1:<br><br> #MARK SOURCE<br> |4 192.168.1.1<br><br>2) A new macro (macro.RDP) has been added for Microsoft Remote<br> Desktop. This macro was contributed by Tuomo Soini.<br><br>3) A new 'maclog' extension file has been added. This file is<br> processed just before logging based on the setting of<br> MACLIST_LOG_LEVEL is done. When the script is copyied at compile<br> time, the CHAIN variable will contain the name of the chain where<br> rules should be inserted. Remember that if you have specified<br> MACLIST_TABLE=mangle, then your run_iptables commands should<br> include "-t mangle".<br><br>4) Beginning with this release, Shorewall and Shorewall lite will<br> share the same change log and release notes.<br></pre>
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<span style="font-weight: bold;"></span>
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<span style="font-weight: bold;">2006-10-6 Shorewall 3.0.9<br>
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<pre>Problems corrected in 3.0.9<br><br>1) When using a light-weight shell like ash or dash, "shorewall<br> [re]start" fails when using the built-in traffic shaper. The error<br> messages resemble these:<br><br> local: 3: eth0:: bad variable name<br> ERROR: Command "tc class add dev eth0 parent 1: classid 1:1 htb rate 800kbit mtu" Failed<br><br>2) The output formating of the 'hits' command under BusyBox 1.2.0 has<br> been corrected.<br><br>3) In prior versions, setting 'mss=' in /etc/shorewall/zones did not<br> affect traffic to/from the firewall zone. That has been corrected.<br><br>4) Previously, using IP address ranges in the accounting file could<br> cause non-fatal iptables errors during shorewall [re]start.<br><br>Other changes in 3.0.9<br><br>1) It is now possible to use the special value 'detect' in the ADDRESS<br> column of /etc/shorewall/masq. This allows you to specify SNAT (as<br> opposed to MASQUERADE) without having to know the ip address of the<br> external interface. Shorewall must be restarted each time that the<br> external address (the address of the interface named in the<br> INTERFACE column) changes.<br><br>2) Experimental optimization for PPP devices has been added to the<br> providers file. If you omit the GATEWAY column for a ppp device (or<br> enter "-" in the column) then Shorewall will generate routes<br> for the named INTERFACE that do not specify a gateway IP address<br> (the peer address will be assumed).<br><br>3) Normally, Shorewall tries to protect users from themselves by<br> preventing PREROUTING and OUTPUT tcrules from being applied to<br> packets that have been marked by the 'track' option in<br> /etc/shorewall/providers.<br><br> If you really know what you are doing and understand packet marking<br> thoroughly, you can set TC_EXPERT=Yes in shorewall.conf and<br> Shorewall will not include these cautionary checks.<br><br>4) Previously, CLASSIFY tcrules were always processed out of the<br> POSTROUTING chain. Beginning with this release, they are processed<br> out of the POSTROUTING chain *except* when the SOURCE is<br> $FW[:<address>] in which case the rule is processed out of the<br> OUTPUT chain.<br></pre>
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<span style="font-weight: bold;"></span>
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<span style="font-weight: bold;">2006-09-27 Shorewall 3.2.4<br>
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<pre>Shorewall Problems corrected in 3.2.4<br><br>1) Previously, the directory name in the command "shorewall start<br> <directory name>" was being dropped by "/sbin/shorewall".<br><br>2) Previous, when /usr/share/shorewall/xmodules had been copied to<br> /etc/shorewall/modules, Shorewall was not looking in the correct<br> directory for the "xt_..." modules. There are two parts to the fix:<br><br> - The /usr/share/shorewall/xmodules file has been removed. The<br> /usr/share/shorewall/modules file will now load all required<br> modules regardless of which kernel version you are running.<br> - The MODULESDIR option can now contain a colon-separated list of<br> directories to search for modules with the default being:<br><br> /lib/modules/$(uname -r)/kernel/net/ipv4/netfilter:/lib/modules/$(uname -r)/kernel/net/netfilter<br><br>3) Rules in /etc/shorewall/tos which specify zones defined<br> using entries in /etc/shorewall/hosts applied to all traffic<br> to/from the zone interfaces (the bridge port, ipset or IP<br> address(es) in the zone definition were ignored).<br><br>4) Previously, 'shorewall-lite dump' did not report traffic shaping<br> information even if TC_ENABLED was set to Yes or Internal in the<br> shorewall.conf file used to compile the exported firewall script.<br><br> To correct this problem, the firewall script must be recompiled and<br> re-exported.<br><br>5) Previously, errors during the compile phase were not reflected in<br> the exit status of /sbin/shorewall. Thanks to Tuomo Soini for<br> finding and correcting this problem.<br><br>Other Shorewall changes in 3.2.4<br><br>1) Previously, scripts compiled for export (-e option) depended on<br> /usr/share/shorewall-lite/functions in order to run correctly. This<br> made it possible for a compiled script to be incompatible with the<br> version of Shorewall Lite installed on a firewall system.<br><br> Beginning with Shorewall 3.2.4, this dependency is removed such<br> that version incompatibility between Shorewall and Shorewall Lite<br> should not be a concern going forward.<br><br>2) Two new macros have been added, courtesy of Tuomo Soini<br><br> macro.Finger<br> macro.Telnets<br><br>3) The output of "shorewall show macros" has been enhanced to show<br> macros in each directory in the CONFIG_PATH.<br><br>Shorewall Lite problems corrected in 3.2.4<br><br>1) Previous, when /usr/share/shorewall-lite/xmodules had been copied to<br> /etc/shorewall-lite/modules, Shorewall was not looking in the correct<br> directory for the "xt_..." modules. There are two parts to the fix:<br><br> - The /usr/share/shorewall-lite/xmodules file has been removed. The<br> /usr/share/shorewall-lite/modules file will now load all required<br> modules regardless of which kernel version you are running.<br> - The MODULESDIR option can now contain a colon-separated list of<br> directories to search for modules with the default being:<br><br> /lib/modules/$(uname<br> -r)/kernel/net/ipv4/netfilter:/lib/modules/$(uname<br> -r)/kernel/net/netfilter<br><br> /usr/share/shorewall-lite/modules contains a *lot* of modules. If<br> you use module autoloading (which non-embedded Linux distributions<br> do), then you can improve your "shorewall [re]start" time by<br> trimming all but the helper modules from the file. To do that,<br> create the file /etc/shorewall-lite/modules with the following<br> entries:<br><br> loadmodule ip_conntrack_amanda<br> loadmodule ip_conntrack_ftp<br> loadmodule ip_conntrack_irc<br> loadmodule ip_conntrack_netbios_ns<br> loadmodule ip_conntrack_pptp<br> loadmodule ip_conntrack_tftp<br> loadmodule ip_nat_amanda<br> loadmodule ip_nat_ftp<br> loadmodule ip_nat_irc<br> loadmodule ip_nat_pptp<br> loadmodule ip_nat_snmp_basic<br> loadmodule ip_nat_tftp<br><br>Other Shorewall Lite changes in 3.2.4<br><br>None.<br></pre>
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<span style="font-weight: bold;">2006-08-26 Shorewall 3.2.3<br>
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<pre>Shorewall Problems Corrected in 3.2.3<br><br> 1) A problem in 'install.sh' resulted in sandbox violations on<br> Gentoo and, when Shorewall is installed using an RPM, the problem<br> caused an incorrect copy of shorewall.conf to be installed in<br> /usr/share/shorewall/configfiles/.<br><br> 2) A typo in the functions file caused startup errors when the user's<br> distribution did not support a true mktemp program (such as<br> Bering Uclibc). Patch courtesy of Cédric Schieli.<br><br> 3) Several erroneous references to ip_addr_del() were made in<br> /var/lib/shorewall/compiler and in the code that it generates.<br><br> a) These should have been references to del_ip_addr()<br> b) One of the calls also had an incorrect parameter list.<br><br> 4) Previously, "shorewall check -e" would erroneously attempt to<br> detect interfaces configured for traffic shaping.<br><br> 5) SUBSYSLOCK functionality has been restored.<br><br> 6) In prior versions, setting 'mss=' in /etc/shorewall/zones did not<br> affect traffic to/from the firewall zone. That has been corrected.<br><br> 7) When /sbin/shorewall was run under BusyBox ash, shell errors would<br> occur if certain command options were given.<br><br> 8) Previously, the 'optional' provider option did not detect the case<br> where the interface was DOWN but still had a configured IP<br> address. Shorewall was detecting such interfaces as UP and later<br> 'ip replace route' commands would fail.<br><br> It should also be clarified that the 'optional' option is intended<br> to detect cases where a provider interface is in a state that would<br> cause 'shorewall [re]start' to fail; it is not intended to<br> determine whether communication is possible using the interface.<br><br> 9) Previously, the "shorewall add" command would fail with error<br> messages indicating that the commands "chain_exists" and<br> "verify_hosts_file" could not be found.<br><br> 10) Using earlier Shorewall versions, the following sequence of<br> commands produced inconsistant results:<br><br> a) shorewall [re] start<br> b) Modify /etc/shorewall/tcdevices and/or /etc/shorewall/tcclasses<br> c) shorewall refresh<br> d) shorewall save<br> e) shorewall restore (or reboot and shorewall start -f during boot<br> up)<br><br> After that series of commands, the state of traffic shaping was as<br> it was after step a) rather than as it was after step c). The fix<br> involved re-implementing 'shorewall refresh' as a compile/execute<br> procedure similar to [re]start. While the entire configuration is<br> recompiled, only ecn, blacklisting, tcrules and traffic control<br> will be updated in the running configuration.<br><br> 11) DNAT rules generated under DETECT_DNAT_IPADDRS=Yes may have been<br> incorrect with the result that the rules didn't work at all.<br><br> Other Shorewall changes in 3.2.3<br><br> 1) A 'shorewall export' command has been added.<br><br> shorewall export [ <directory1> ] [user@]<system>:[<directory2>]<br><br> If <directory1> is omitted, then the current working directory is<br> assumed.<br><br> Causes the shorewall configuration in <directory1> to be compiled<br> into a program called '<directory1>/firewall'. If compilation is<br> successful, the '<directory1>/firewall' script is copied via scp<br> to the specified <system>.<br><br> Example:<br><br> shorewall export admin@gateway:<br><br> This command would compile the configuration in the current working<br> directory then copy the 'firewall' (and 'firewall.conf') files to<br> admin's home directory on system 'gateway'.<br><br> 2) Normally, Shorewall tries to protect users from themselves by<br> preventing PREROUTING and OUTPUT tcrules from being applied to<br> packets that have been marked by the 'track' option in<br> /etc/shorewall/providers.<br><br> If you really know what you are doing and understand packet marking<br> thoroughly, you can set TC_EXPERT=Yes in shorewall.conf and<br> Shorewall will not include these cautionary checks.<br><br> 3) Previously, CLASSIFY tcrules were always processed out of the<br> POSTROUTING chain. Beginning with this release, they are processed<br> out of the POSTROUTING chain *except* when the SOURCE is<br> $FW[:<address>] in which case the rule is processed out of the<br> OUTPUT chain.<br><br> See the Migration Considerations section for further information.<br><br> 4) Previously, if you specified 'detectnets' on an interface with a<br> default route, Shorewall would ignore the default route with a<br> warning message. This could lead to systems that were inaccessible<br> from the net, even from systems listed in the 'routestopped' file.<br><br> Specifying 'detectnets' on an interface with a default route now<br> generates a fatal error.<br><br>Shorewall Lite problems corrected in 3.2.3<br><br>1) A typo in /usr/share/shorewall-lite/functions caused startup errors<br> on distributions like Bering Uclibc that don't have a true mktemp<br> utility.<br><br>Other Shorewall Lite changes in 3.2.3<br><br>None.<br></pre>
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<span style="font-weight: bold;">2006-08-10 Shorewall 3.2.2</span><br>
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<pre>Problems corrected in 3.0.8<br><br>1) If the 'upnp' interface option was specified on one or more<br> interfaces but no forwardUPnP rule was included, the following<br> diagnostic messages were issued:<br><br> WARNING:Missing forwardUPnP rule (required by 'upnp' interface option on<br> eth0)<br> ERROR: Fatal error in find_logactionchain<br><br> Given that the fatal error message is obscure if the first WARNING<br> isn't noticed, the ERROR message has been eliminated with the<br> result that Shorewall now starts but won't handle UPnP properly.<br><br>2) If BRIDGING=No in shorewall.conf, then an entry in<br> /etc/shorewall/hosts such as the following would result in an<br> obscure failure of an iptables command:<br><br> loc br0:eth0<br><br> Shorewall now detects this case and issues a more helpful error<br> message:<br><br> ERROR: BRIDGING=Yes is required for this zone definition: loc br0:eth0<br><br>3) Users of the Multi-ISP feature may experience this error during startup:<br><br> /usr/share/shorewall/firewall: line 1393: 20000 + (1 - 1) * 256 +<br> $rulenum : syntax error: operand expected (error token is<br> "$rulenum ")<br><br>4) A more useful diagnostic is now given when a command fails during<br> setup of traffic shaping.<br><br>5) Shorewall now checks to see if devices in /etc/shorewall/tcdevices<br> exist. If a device does not exist, a warning message is issued and<br> that device's entries in /etc/shorewall/tcclasses are ignored. This<br> applies to "shorewall start", "shorewall restart" and "shorewall<br> refresh".<br><br>6) It is now possible to exclude a single source MAC address using<br> !<MAC address>. Previously, a startup error occurred.<br><br>7) Shorewall would use the incorrect shell for compilation in the<br> following case:<br><br>8) Reporting of the "Mangle FORWARD Chain" capability was broken. While<br> Shorewall correctly detected and used the capability, the output of<br> "shorewall show capabilities" and "shorewall dump" showed the<br> capability as "Not Available".<br><br>9) Extension scripts for policy chains (chains with the word 'all' in<br> their name) were not being run previously.<br><br>-Tom</pre>
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<span style="font-weight: bold;">2006-07-24 End of support for Shorewall
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2.4<br>
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<pre>Support for Shorewall 2.4 has ended. As always, we will try to help you<br>with your problems but I personally will not spend any time reading old<br>code trying to solve your problem and I will not provide patches for any<br>bugs found in versions earlier than 3.0.<br></pre>
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<span style="font-weight: bold;">2006-07-21 Shorewall 3.2.1<br>
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<pre>Problems Corrected in Shorewall 3.2.1:<br><br>1) The output formatting of the 'hits' command under BusyBox 1.2.0 has<br> been corrected.<br><br>2) Shorewall no longer requires extended MARK support to use the 'track'<br> provider option when HIGH_ROUTE_MARKS=No.<br><br>3) The output of the 'hits' command was previously scrambled if<br> /etc/services contained spaces as column delimiters rather than<br> tabs.<br><br>4) The /usr/share/shorewall/xmodules file was previously just a copy<br> of /usr/share/shorewall/modules.<br><br>5) The version number in the comments at the top of shorewall.conf has<br> been corrected.<br><br>6) The script generated when the -e option is given to the 'compile'<br> command is setting CONFIG_PATH to the value given in the remote<br> firewall's shorewall.conf processed at compile time. This is<br> generally incorrect and results in the inability to load any kernel<br> modules on the firewall during 'shorewall-lite [re]start'.<br><br>Problems Corrected in Shorewall Lite 3.2.1:<br><br>1) The output formatting of the 'hits' command under BusyBox 1.2.0 has<br> been corrected.<br><br>2) The output of the 'hits' command was previously scrambled if<br> /etc/services contained spaces as column delimiters rather than<br> tabs.<br><br>3) The /usr/share/shorewall-lite/xmodules file was previously just a<br> copy of /usr/share/shorewall-lite/modules.<br><br>4) The version number in the comments at the top of shorewall.conf has<br> been corrected.<br></pre>
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<span style="font-weight: bold;">2006-07-19 Shorewall bridge/firewall support
|
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change upcoming<br>
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<pre><tt>I regret to announce that Shorewall bridge/firewall support in its</tt><br><tt>current form (BRIDGING=Yes in shorewall.conf) is going away. I will</tt><br><tt>retain the code in Shorewall for the foreseeable future but users</tt><br><tt>migrating to new kernels coming out next year will find that their</tt><br><tt>current bridge configurations no longer work. Shorewall bridge/firewall</tt><br><tt>users upgrading to more immediate new kernel releases (possibly as early</tt><br><tt>as 2.6.18) will find Netfilter warning messages appearing in their</tt><br><tt>kernel log when Shorewall [re]starts.</tt><br><br><tt>The reason that this support is going away is that the underlying</tt><br><tt>Netfilter feature that BRIDGING=Yes depends on (physdev match) is being</tt><br><tt>reduced in scope to the point that it will no longer be possible to use</tt><br><tt>that feature for Shorewall zone definition. There is a significant list</tt><br><tt>of pending Netfilter bug reports than cannot be resolved so long as</tt><br><tt>'physdev match' works the way that it does today.</tt><br><br><tt>While 'physdev match' was a great idea in terms of the function that it</tt><br><tt>provides, it appears impossible to implement that function without</tt><br><tt>breaking other parts of the greater Linux IP stack; in short, 'physdev</tt><br><tt>match' in its current form should never have been released in the first</tt><br><tt>place.</tt><br><br><tt>So -- what can current Shorewall bridge/firewall users do? </tt><br><tt>-----------------------------------------------------------------------</tt><br><tt>a) Configure Shorewall as if you have a simple bridge</tt><br><tt>(<a href="http://www.shorewall.net/SimpleBridge.html">http://www.shorewall.net/SimpleBridge.html</a>) and use ebtables to filter</tt><br><tt>traffic in and out of the individual bridge ports.</tt><br><br><tt>b) Configure Shorewall so that you specifically enumerate the IP</tt><br><tt>addresses of the hosts connected to all but one of the bridge ports.</tt><br><br><tt>Example where br0 connects to 192.168.1.0/24:</tt><br><br><tt>/etc/shorewall/shorewall.conf</tt><br><br><tt>BRIDGING=<doesn't matter></tt><br><br><tt>/etc/shorewall/zones</tt><br><br><tt>z1 ipv4</tt><br><tt>z2 ipv4</tt><br><br><tt>/etc/shorewall/interfaces</tt><br><br><tt>- br0 detect routeback</tt><br><br><tt>/etc/shorewall/hosts:</tt><br><br><tt>z1 br0:192.168.1.1-192.168.1.15,192.168.1.18,...</tt><br><tt>z2 br0:192.168.1.0/24</tt><br><br><tt>In other words, explicitly specify the hosts in the first zone listed</tt><br><tt>in /etc/shorewall/zones (z1 in the above example) then simply specify</tt><br><tt>the entire network for the second zone. If the second zone contains your</tt><br><tt>default gateway, then you would enter 0.0.0.0/0 rather than</tt><br><tt>192.168.1.0/24.</tt><br><br><tt>I will expand these instructions into an article on the web site just as</tt><br><tt>soon as I find the time.</tt><br><br><tt>c) If you have ipset support, you can take the same approach as in b)</tt><br><tt>above but define 'z1' using one or more ipsets rather than with an</tt><br><tt>explicit lists of network/host IP addresses. That will generally result</tt><br><tt>in a smaller ruleset.</tt><br><tt>-----------------------------------------------------------------------</tt><br><tt>I realize that the options available to you are more cumbersome to</tt><br><tt>configure and maintain than what you have today but at the moment, I see</tt><br><tt>no alternatives. I will however continue to ponder the problem, and if I</tt><br><tt>come up with something better I will let you know.</tt><br><br><tt>-Tom</tt></pre>
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<span style="font-weight: bold;">2006-07-11 Shorewall 3.2.0<br>
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<pre>New Features:<br><br>1) Shorewall has always been very noisy (lots of messages). No longer.<br><br> You set the default level of verbosity using the VERBOSITY option in<br> shorewall.conf. If you don't set it (as would be the case if you use your<br> old shorewall.conf file) then VERBOSITY defaults to a value of 2 which<br> results in behavior compatible with previous Shorewall versions.<br> A value of 1 suppresses some of the output (like the old -q option did)<br> while a value of 0 makes Shorewall almost silent. A value of -1<br> suppresses all output except warning and error messages.<br><br> The value specified in the 3.2 shorewall.conf is 1. So you can make<br> Shorewall as verbose as previously using a single -v and you can make it<br> almost silent by using a single -q.<br><br> If VERBOSITY is set at 2, you can still make a command nearly<br> silent by using two "q"s (e.g., shorewall -qq restart).<br><br> In summary, each "q" subtracts one from VERBOSITY while each "v" adds one<br> to VERBOSITY.<br><br> The "shorewall show log", "shorewall logwatch" and "shorewall dump"<br> commands require VERBOSITY to be greater than or equal to 3 to<br> display MAC addresses.This is consistent with the previous<br> implementation which required a single -v to enable MAC display but<br> means that if you set VERBOSITY=0 in shorewall.conf, then you will<br> need to include -vvv in commands that display log records in order<br> to have MACs displayed.<br><br> To make the display of MAC addresses less cumbersome, a '-m' option has<br> been added to the "show" and logwatch commands:<br><br> shorewall show -m log<br> shorewall logwatch -m<br><br>2) A new 'shorewall compile' command has been added.<br><br> shorewall compile [ -e ] [ <config directory> ] <script file><br><br> where:<br><br> -e Allows the generated script to run<br> on a system with Shorewall Lite installed.<br> Generates an error if the configuration uses<br> an option that would prevent the generated<br> script from running on a system other than<br> where the 'compile' command is running (see<br> additional consideration a) below).<br><br> <config directory> Is an optional directory to be searched for<br> configuration files prior to those listed<br> in CONFIG_DIR in<br> /etc/shorewall/shorewall.conf.<br><br> <script file> Is the name of the output file.<br><br> The 'compile' command processes the configuration and generates a<br> script file which may then be executed to configure the firewall.<br><br> The generated script supports the following commands:<br><br> start - starts the firewall<br> stop - stops the firewall<br> clear - clears the firewall (removes all iptables rules)<br> restart - restarts the firewall<br> status - displays the firewall status<br> version - displays the version of shorewall used to create the<br> script<br><br> The generated script contains error checking and will terminate if an<br> important command fails. Before terminating:<br><br> a) The script will check for the existence of the restore script<br> specified by the RESTOREFILE variable in shorewall.conf. If that<br> restore script exists, it is executed.<br><br> b) If the restore script doesn't exist but Shorewall appears to be<br> installed on the system, the equivalent of an<br> "/sbin/shorewall stop" command is executed.<br><br> Some additional considerations:<br><br> a) When you run 'compile' on one system and then run the generated script<br> on another system under Shorewall Lite, there are certain limitations.<br><br> 1) A compatible version of Shorewall Lite must be running on the remote<br> system. Going forward, the goal is that any minor version of<br> the current major version will be compatible. So if the<br> program is compiled using Shorewall 3.2.x, any 3.2.y version<br> or 3.p.q version (where p > 2) of Shorewall Lite will be compatible.<br> 2) The 'detectnets' interface option is not allowed.<br> 3) DYNAMIC_ZONES=Yes is not allowed.<br> 4) You must supply the file /etc/shorewall/capabilities to provide<br> the compiler with knowledge of the capabilities of the system<br> where the script is to be run. See below.<br> 5) If your /etc/shorewall/params file contains code other than simple<br> assignment statements with contant values, then you should move<br> that code to /etc/shorewall/init. That way, the code will be<br> executed on the target system when the compiled script is run and<br> not on the local system at compile time.<br><br> b) If you run the "shorewall compile" or "shorewall check" commands under<br> a user other than 'root', then you must supply<br> /etc/shorewall/capabilities.<br><br> c) To aid in building /etc/shorewall/capabilities, a 'shorecap' program<br> is provided in the Shorewall Lite package and is installed in<br> /usr/share/shorewall-lite/shorecap when you install Shorewall Lite.<br><br> For instructions about running shorecap, see the comments at the<br> top of the program file (it's a simple shell script).<br><br> The "shorewall start" and "shorewall restart" commands have been<br> rewritten to use compilation. They both compile a temporary program<br> then run it. This results in a slightly longer elapsed time than the<br> similar commands required under earlier versions of Shorewall but new<br> connections are blocked for a much smaller percentage of that time.<br><br> If an error is found during the compilation phase, /sbin/shorewall<br> terminates and the Shorewall state is unchanged.<br><br> Under Shorewall 3.1.5, "shorewall restart" takes roughly 16.5 seconds<br> on my firewall:<br><br> real 0m16.599s<br> user 0m6.292s<br> sys 0m9.885s<br><br> Of the elapsed 16.5 seconds, new connections are disabled less than<br> 3.5 seconds. Here are some numbers for comparison:<br><br> A) shorewall restart (Shorewall 3.0.4)<br><br> real 0m17.540s<br> user 0m5.956s<br> sys 0m10.737s<br><br> B) ./foo restart # foo created using "shorewall compile"<br><br> real 0m3.297s<br> user 0m1.444s<br> sys 0m1.728s<br><br> C) shorewall restore (Shorewall 3.0.4) # Restores from file generated by<br> # "shorewall save"<br><br> real 0m1.164s<br> user 0m0.556s<br> sys 0m0.608s<br><br> D) shorewall restore (shorewall 3.1.5)<br><br> real 0m1.637s<br> user 0m0.728s<br> sys 0m0.584s<br><br> The time difference between B and C reflects the difference between<br> "iptables-restore" and multiple executions of "iptables". The time<br> difference between C and D results from the fact that the "restore"<br> command in Shorewall 3.1 runs the compiled program in a way that<br> turns all iptables commands into no-ops then invokes<br> iptables-restore. The system is a 1.4Ghz Celeron with 512MB RAM.<br><br> As a final part of this change, the "check" command now compiles the<br> current configuration and writes the compiled output to /dev/null. So<br> "check" performs all of the same validation that compile does. Note that<br> there is still no guarantee that the generated script won't encounter<br> run-time errors.<br><br>2) The /etc/shorewall/maclist file has a new column layout. The first column<br> is now DISPOSITION. This column determines what to do with matching<br> packets and can have the value ACCEPT or DROP (if MACLIST_TABLE=filter, it<br> can also contain REJECT). This change is upward compatible so your existing<br> maclist file can still be used.<br><br> ACCEPT, DROP and REJECT may be optionally followed by a log level to<br> cause the packet to be logged.<br><br>4) In macro files, you can now use the reserved words SOURCE and DEST<br> in the columns of the same names. When Shorewall expands the<br> macro, it will substitute the SOURCE from the macro invocation for<br> SOURCE and the DEST from the invocation for DEST. This allows you<br> to write macros that act in both directions (from source to destination<br> and from destination to source).<br><br> Example:<br><br> macro.FOO:<br><br> PARAM SOURCE DEST udp 500<br> PARAM DEST SOURCE udp 500<br><br> /etc/shorewall/rules:<br><br> FOO/ACCEPT fw net<br><br> Resulting rules:<br><br> ACCEPT fw net udp 500<br> ACCEPT net fw udp 500<br><br> This new feature has been used to implement the SMBBI macro.<br> SMBBI is the same as the SMB macro with the exception that<br> it passes SMB traffic in both directions whereas SMB only<br> passes that traffic in one direction.<br><br>5) In the /etc/shorewall/rules file and in actions, you may now specify<br> 'tcp:syn' in the PROTO column. 'tcp:syn' is equivalent to 'tcp' but also<br> requires that the SYN flag is set and the RST, FIN and ACK flags be<br> off ("--syn" is added to the iptables rule).<br><br> As part of this change, Shorewall no longer adds the "--syn" option<br> to TCP rules that specify QUEUE as their target.<br><br>6) /sbin/shorewall now supports a "-t" option that causes all progress<br> messages to be timestamped.<br><br> Example (VERBOSITY=0 in shorewall.conf):<br><br> gateway:/etc/shorewall # shorewall -t restart<br> 07:08:51 Compiling...<br> 07:09:05 Shorewall configuration compiled to /var/lib/shorewall/.restart<br> 07:09:05 Restarting Shorewall....<br> 07:09:08 done.<br> gateway:/etc/shorewall #<br><br>7) A 'refreshed' extension script has been added -- it is executed after<br> "shorewall refresh" has finished.<br><br>8) Two new dynamic blacklisting commands have been added:<br><br> logdrop -- like 'drop' but causes the dropped packets to be logged.<br><br> logreject -- like 'reject' but causes the rejected packets to be<br> logged.<br><br> Packets are logged at the BLACKLIST_LOGLEVEL if one was specified at the<br> last "shorewall [re]start"; otherwise, they are logged at the 'info'<br> log level.<br><br>9) A new IMPLICIT_CONTINUE option has been added to shorewall.conf. When<br> this option is set to "Yes", it causes subzones to be treated differently<br> with respect to policies.<br><br> Subzones are defined by following their name with ":" and a list of parent<br> zones (in /etc/shorewall/zones). Normally, you want to have a set of<br> special rules for the subzone and if a connection doesn't match any of<br> those subzone-specific rules then you want the parent zone rules and<br> policies to be applied. With IMPLICIT_CONTINUE=Yes, that happens<br> automatically.<br><br> If IMPLICIT_CONTINUE=No or if IMPLICIT_CONTINUE is not set, then<br> subzones are not subject to this special treatment.<br><br> With IMPLICIT_CONTINUE=Yes, an implicit CONTINUE policy may be overridden<br> by including an explicit policy (one that does not specify "all" in either<br> the SOURCE or the DEST columns).<br><br> Example:<br><br> /etc/shorewall/zones:<br><br> prnt ipv4<br> chld:prnt ipv4<br><br> Traffic to/from the 'chld' zone will first pass through the applicable<br> 'chld' rules and if none of those rules match then it will be passed through<br> the appropriate 'prnt' rules. If the connection request does not match<br> any of the 'prnt' rules then the relevant 'prnt' policy is applied.<br><br> If you want the fw->chld policy to be ACCEPT, simply add this entry to<br> /etc/shorewall/policy:<br><br> $FW chld ACCEPT<br><br> Traffic from all other zones to 'chld' will be subject to the implicit<br> CONTINUE policy.<br><br>10) Shorewall now includes support for explicit routing rules when the<br> /etc/shorewall/providers file is used. A new file,<br> /etc/shorewall/route_rules can be used to add routing rules based on<br> packet source and/or destination.<br><br> The file has the following columns:<br><br> SOURCE(optonal) An ip address (network or host) that<br> matches the source IP address in a packet.<br> May also be specified as an interface<br> name optionally followed by ":" and an<br> address. If the define 'lo' is specified,<br> the packet must originate from the firewall<br> itself.<br><br> DEST(optional) An ip address (network or host) that<br> matches the destination IP address in a packet.<br><br> If you choose to omit either SOURCE or DEST,<br> place "-" in the column. Note that you<br> may not omit both SOURCE and DEST.<br><br> PROVIDER The provider to route the traffic through.<br> May be expressed either as the provider name<br> or the provider number. You may also specify<br> the 'main' routing table here, either by<br> name or by number (254).<br><br> PRIORITY<br> The rule's priority which determines the order<br> in which the rules are processed.<br><br> 1000-1999 Before Shorewall-generated<br> 'MARK' rules<br><br> 11000- 11999 After 'MARK' rules but before<br> Shorewall-generated rules for<br> provider interfaces.<br><br> 26000-26999 After provider interface rules but<br> before 'default' rule.<br><br> Rules with equal priority are applied in<br> the order in which they appear in the file.<br><br> Example 1: You want all traffic coming in on eth1 to be routed to the ISP1<br> provider:<br><br> #PROVIDER PRIORITY SOURCE DEST<br> ISP1 1000 eth1<br><br> Example 2: You use OpenVPN (routed setup /tunX) in combination with multiple<br> providers. In this case you have to set up a rule to ensure that<br> the OpenVPN traffic is routed back through the tunX interface(s)<br> rather than through any of the providers. 10.8.0.0/24 is the<br> subnet choosen in your OpenVPN configuration (server 10.8.0.0<br> 255.255.255.0)<br><br> #SOURCE DEST PROVIDER PRIORITY<br> - 10.8.0.0/24 main 1000<br><br>11) Prior to now, it has not been possible to use connection marking in<br> /etc/shorewall/tcrules if you have a multi-ISP configuration that uses the<br> 'track' option.<br><br> Beginning with this release, you may now set HIGH_ROUTE_MARKS=Yes in<br> shorewall.conf to effectively divide the packet mark and connection mark<br> into two 8-byte mark fields.<br><br> When you do this:<br><br> a) The MARK field in the providers file must have a value that is<br> less than 65536 and that is a multiple of 256 (using hex<br> representation, the values are 0x0100-0xFF00 with the low-order<br> 8 bits being zero).<br><br> b) You may only set those mark values in the PREROUTING chain.<br><br> c) Marks used for traffic shaping must still be in the range of 1-255<br> and may still not be set in the PREROUTING chain.<br><br> d) When you SAVE or RESTORE in tcrules, only the TC mark value is<br> saved or restored. Shorewall handles saving and restoring the<br> routing (provider) marks.<br><br>12) A TOS column has been added to /etc/shorewall/tcrules. This allows marking<br> based on the contents of the TOS field in the packet header.<br><br>13) Beginning with this release, the way in which packet marking in the<br> PREROUTING chain interracts with the 'track' option in /etc/shorewall/providers<br> has changed in two ways:<br><br> a) Packets *arriving* on a tracked interface are now passed to the PREROUTING<br> marking chain so that they may be marked with a mark other than the<br> 'track' mark (the connection still retains the 'track' mark).<br><br> b) When HIGH_ROUTE_MARKS=Yes, you can still clear the mark on packets<br> in the PREROUTING chain (i.e., you can specify a mark value of zero).<br><br>14) Shorewall will now attempt to detect the MTU of devices listed in<br> /etc/shorewall/tcdevices and will use the detected MTU in setting<br> up traffic shaping.<br><br>15) In /etc/shorewall/rules, the values "all-" and "all+-" may now be<br> used for zone names. "all-" means "All zones except the firewall";<br> "all+-" means "All zones except the firewall" and intra-zone<br> traffic is included.<br><br>16) Kernel version 2.6.16 introduces 'xtables', a new common packet<br> filtering and connection tracking facility that supports both IPv4<br> and IPv6. Because a different set of kernel modules must be loaded<br> for xtables, Shorewall now includes two 'modules' files:<br><br> a) /usr/share/shorewall/modules -- the former<br> /etc/shorewall/modules<br><br> b) /usr/share/shorewall/xmodules -- a new file that support<br> xtables.<br><br> If you wish to use the new file, then simply execute this command:<br><br> cp -f /usr/share/shorewall/xmodules /etc/shorewall/modules<br><br>17) Shorewall now checks to see if devices in /etc/shorewall/tcdevices<br> exist. If a device does not exist, a warning message is issued and<br> that device's entries in /etc/shorewall/tcclasses are ignored. This<br> applies to "shorewall start", "shorewall restart" and "shorewall<br> refresh".<br><br>18) "load" and "reload" commands have been added. These commands allow<br> a non-root user with ssh access to a remote system running<br> Shorewall Lite to compile a firewall script on the local system and<br> to install that script on the remote system.<br><br> Syntax is:<br><br> shorewall [re]load [ <directory> ] <system><br><br> If <directory> is omitted, the current working directory is<br> assumed.<br><br> The command is equivalent to:<br><br> /sbin/shorewall compile -e <directory> firewall &&\<br> scp firewall root@<system>:/var/lib/shorewall-lite/ &&\<br> ssh root@<system> '/sbin/shorewall-lite [re]start' # Note 1<br><br> In other words, the configuration in the specified (or defaulted)<br> directory is compiled to a file called firewall in that<br> directory. If compilation succeeds, then 'firewall' is copied to the<br> (usually remote) <system> using scp. If the copy succeeds,<br> Shorewall Lite on <system> is started or restarted via ssh (<br> load causes Shorewall Lite to be started and 'reload' causes<br> Shorewall Lite to be re-started)<br><br> Note 1: In Shorewall Lite 3.2.0 RC4, the 'firewall' script has moved<br> from /usr/share/shorewall-lite/ to /var/lib/shorewall-lite in<br> packages from shorewall.net. The package maintainers for the<br> various distributions are free to choose the directory where the<br> script will be stored under their distribution by altering the<br> value of LITEDIR in /usr/share/shorewall/configpath. You can run the<br> "shorewall show config" command to see how your distribution<br> defines LITEDIR.<br></pre>
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<span style="font-weight: bold;">2006-06-21 Shorewall 3.0.8<br>
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<pre>Problems corrected in 3.0.8<br><br>1) If the 'upnp' interface option was specified on one or more<br> interfaces but no forwardUPnP rule was included, the following<br> diagnostic messages were issued:<br><br> WARNING:Missing forwardUPnP rule (required by 'upnp' interface option on<br> eth0)<br> ERROR: Fatal error in find_logactionchain<br><br> Given that the fatal error message is obscure if the first WARNING<br> isn't noticed, the ERROR message has been eliminated with the<br> result that Shorewall now starts but won't handle UPnP properly.<br><br>2) If BRIDGING=No in shorewall.conf, then an entry in<br> /etc/shorewall/hosts such as the following would result in an<br> obscure failure of an iptables command:<br><br> loc br0:eth0<br><br> Shorewall now detects this case and issues a more helpful error<br> message:<br><br> ERROR: BRIDGING=Yes is required for this zone definition: loc br0:eth0<br><br>3) Users of the Multi-ISP feature may experience this error during startup:<br><br> /usr/share/shorewall/firewall: line 1393: 20000 + (1 - 1) * 256 +<br> $rulenum : syntax error: operand expected (error token is<br> "$rulenum ")<br><br>4) A more useful diagnostic is now given when a command fails during<br> setup of traffic shaping.<br><br>5) Shorewall now checks to see if devices in /etc/shorewall/tcdevices<br> exist. If a device does not exist, a warning message is issued and<br> that device's entries in /etc/shorewall/tcclasses are ignored. This<br> applies to "shorewall start", "shorewall restart" and "shorewall<br> refresh".<br><br>6) It is now possible to exclude a single source MAC address using<br> !<MAC address>. Previously, a startup error occurred.<br><br>7) Shorewall would use the incorrect shell for compilation in the<br> following case:<br><br>8) Reporting of the "Mangle FORWARD Chain" capability was broken. While<br> Shorewall correctly detected and used the capability, the output of<br> "shorewall show capabilities" and "shorewall dump" showed the<br> capability as "Not Available".<br><br>9) Extension scripts for policy chains (chains with the word 'all' in<br> their name) were not being run previously.<br></pre>
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<span style="font-weight: bold;">2006-05-27 Shorewall 2.4.9<br>
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<pre>Problems corrected in 2.4.9<br><br>1) Updated the bogons file to reflect recent IANA allocations.<br><br>2) If you use SAME or SAME:nodst in the ADDRESS column of /etc/shorewall/masq and<br> if you set ADD_SNAT_ALIASES=Yes in shorewall.conf, then "shorewall start" will<br> fail with the error 'Error: an inet prefix is expected rather than "SAME".'.<br><br>3) It is now possible to exclude a single source MAC address using<br> !<MAC address>. Previously, a startup error occurred.<br></pre>
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<span style="font-weight: bold;">2006-05-06 Shorewall 3.0.7<br>
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<pre>Problems corrected in 3.0.7<br><br>1) Previously, if your kernel did not supply the mangle table FORWARD chain<br> then "shorewall [re]start" would fail. Now, if your mangle table does<br> not supply this chain Shorewall will avoid using either that chain or<br> the mangle table POSTROUTING chain. This change is strictly to stop Shorewall<br> from blowing up during [re]start on very old kernels (such as 2.4.17<br> running on a PS2); if your kernel does not support these chains and you<br> try to mark packets in either of them using entries in<br> /etc/shorewall/tcrules, [re]start will fail.<br><br>2) Previously, if there were more than 10 IP addresses on a multi-ISP interface,<br> some of the routing rules generated by Shorewall were placed after the<br> default rule which resulted in them not being recognized.<br><br>3) When install.sh is used to install on a Debian or Ubuntu system, the<br> SUBSYSLOCK option in shorewall.conf was not being cleared.<br> It will now be cleared, provided that Perl is installed on the system.<br><br>4) When exclusion lists appeared in the /etc/shorewall/tcrules file, the<br> resulting 'exclusion chains' (whose names begin with 'excl_') were not<br> deleted as part of 'shorewall [re]start'. This meant that 'refresh'<br> would fail, either the first or second time that it was done since<br> the last 'shorewall [re]start'.<br><br>Other changes in 3.0.7<br><br>None.<br></pre>
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<!-- Shorewall Release 3.0.5 ENDS-->
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<!-- Shorewall moving to Subversion -->
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<span style="font-weight: bold;">2006-03-28 Shorewall moved to Subversion <br>
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<pre> Effectively today, Shorewall source code repository was migrated to Subversion SCM.<br><br>Please read <a href="https://sourceforge.net/svn/?group_id=22587">https://sourceforge.net/svn/?group_id=22587 </a>
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and <a href="http://www.shorewall.net/download.htm#SVN"> http://www.shorewall.net/download.htm#SVN </a>
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for more information.</pre>
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<!-- Moving to Subversion ENDS -->
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<!-- Shorewall Release 3.0.5 -->
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|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2006-03-28 Shorewall 3.0.6<br>
|
||
</span>
|
||
<pre>Problems corrected in 3.0.6<br><br>1) A typo in the output of "help drop" has been corrected.<br><br>2) Previously, 'shorewall start' would fail in the presence of a network<br> interface named 'inet'.<br><br>3) A shell syntax error was reported when duplicate policies appeared in<br> /etc/shorewall/policy.<br><br>4) The iptable_nat and iptable_mangle modules were previously omitted<br> from /etc/shorewall/modules.<br><br>5) If you use SAME or SAME:nodst in the ADDRESS column of /etc/shorewall/masq <br> and if you set ADD_SNAT_ALIASES=Yes in shorewall.conf, then "shorewall <br> start" will fail with the error 'Error: an inet prefix is expected rather <br> than "SAME".'.<br><br>6) Previously, the 'routeback' option was ignored in an entry in the<br> /etc/shorewall/hosts file that referred to a (set of) bridge port(s).<br><br> Example:<br><br> dmz xenbr0:vif+ routeback<br><br>Other changes in 3.0.6<br><br>1) A 'refreshed' extension script has been added -- it is executed after<br> "shorewall refresh" has finished.<br></pre>
|
||
<!-- Shorewall Release 3.0.5 ENDS-->
|
||
<!-- Shorewall Release 3.0.5 -->
|
||
<span style="font-weight: bold;"></span>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2006-02-10 Shorewall 3.0.5<br>
|
||
</span>
|
||
<pre>Problems corrected in Shorewall 3.0.5<br><br>1) Previously, if /etc/shorewall/ipsets existed, it was run when Shorewall starts<br> but not when Shorewall was restored.<br><br>2) When using the NETKEY IPSEC implementation in kernel 2.6 but without the<br> policy match patch and the Netfilter/IPSEC patches, previously an<br> entry in /etc/shorewall/tunnels was not sufficient in cases where:<br><br> a) gw<->gw traffic was encrypted<br> b) The gw<->gw policy through the tunnel was not ACCEPT<br><br> Thanks to Tuomo Soini, this has been corrected. By simply including the<br> remote VPN zone in the GATEWAY ZONE column for the tunnel's entry, no<br> additional rules are required.<br><br>3) Extra blank output lines are no longer produced by install.sh (patch<br> courtesy of Tuomo Soini).<br><br>4) TCP packets sent to QUEUE by rules in the ESTABLISHED section of the<br> rules file previously didn't work (they had the "--syn" parameter<br> added to them which resulted in a rule that no traffic would match).<br><br> WARNING: If you use the QUEUE target from an action, Shorewall will<br> still insert --syn if the protocol is tcp. So you don't want to<br> invoke such an action from the ESTABLISHED section of the rules<br> file.<br><br>5) The description of the SOURCE column in /etc/shorewall/rules has been<br> improved (patch courtesy of Ed Suominen).<br><br>6) The 'allow', 'drop' and 'reject' commands no longer produce iptables<br> errors when executed while Shorewall is not started.<br><br>7) The spelling of "maximize-throughput" has been corrected in the code<br> that implements tcclasses parsing. Patch courtesy of Paul Traina.<br><br>8) Shorewall now generates the correct match for devices in<br> /etc/shorewall/tcdevices that are actually bridge ports.<br><br>New Features in Shorewall 3.0.5<br><br>1) The facilities available for dealing with the TOS field in<br> /etc/shorewall/tcclasses has been expended. The OPTIONS field is now may<br> contain a comma-separates list of the following:<br><br> tos=0x<value>[/0x<mask>] (mask defaults to 0xff)<br> - this lets you define a classifier<br> for the given <value>/<mask> combination<br> of the IP packet's TOS/Precedence/DiffSrv<br> octet (aka the TOS byte). Please note,<br> classifiers override all mark settings,<br> so if you define a classifer for a class,<br> all traffic having that mark will go in it<br> regardless of any mark set on the packet<br> by a firewall/mangle filter.<br><br> NOTE: multiple tos= statements may be<br> applied per class and per interface, but<br> a given value/mask pair is valid for only<br> ONE class per interface.<br><br> tos-<tosname> - aliases for the following TOS octet<br> value and mask encodings. TOS encodings<br> of the "TOS byte" have been deprecated in<br> favor of diffserve classes, but programs<br> like ssh, rlogin, and ftp still use them.<br><br> tos-minimize-delay 0x10/0x10<br> tos-maximize-throughput 0x08/0x08<br> tos-maximize-reliability 0x04/0x04<br> tos-minimize-cost 0x02/0x02<br> tos-normal-service 0x00/0x1e<br><br> tcp-ack - defined causes an tc filter to<br> be created that puts all tcp ack<br> packets on that interface that have<br> an size of <=64 Bytes to go in this<br> class. This is useful for speeding up<br> downloads. Please note that the size<br> of the ack packets is limited to 64<br> bytes as some applications (p2p for<br> example) use to make every packet an<br> ack packet which would cause them<br> all into here. We want only packets<br> WITHOUT payload to match, so the size<br> limit.<br><br> NOTE: This option is only valid for<br> ONE class per interface.<br><br> Note that the semantics of 'tos-<tosname>' have changed slightly. Previously,<br> these were tested using a mask of 0xff (example: tos-minimize-delay was<br> equivalent to 0x10/0xff). Now each bit is tested individually.<br><br> This enhancement is courtesy of Paul Traina.<br></pre>
|
||
<span style="font-weight: bold;"></span>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2006-01-05 Shorewall 3.0.4<br>
|
||
</span>
|
||
<pre>Problems Corrected in 3.0.4<br><br>1) The shorewall.conf file is once again "console friendly". Patch is<br> courtesy of Tuomo Soini.<br><br>2) A potential security hole has been closed. Previously, Shorewall ACCEPTed<br> all traffic from a bridge port that was sent back out on the same port. If<br> the port was described in /etc/shorewall/hosts using the wildcard "+" (eg,<br> xenbr0:vif+), this could lead to traffic being passed in variance with the<br> supplied policies and rules.<br><br>3) Previously, an intra-zone policy of NONE would cause a startup error. That<br> problem has been corrected.<br><br>4) When RETAIN_ALIASES=Yes, the script produced by "shorewall save" did not<br> add the retained aliases. This means that the following sequence of<br> events resulted in missing aliases:<br><br> shorewall start<br> shorewall restart<br> shorewall save<br> reboot<br> shorewall -f start (which is the default during boot up)<br><br>5) When a 2.x standard action is invoked with a log level (example<br> "AllowPing:info"), logging does not occur.<br><br>New Features in 3.0.4<br><br>1) By popular demand, the 'Limit' action described at<br> http://www1.shorewall.net/PortKnocking.html#Limit has been made a standard<br> action. Limit requires 'recent match' support in your kernel and iptables.<br><br>2) DISABLE_IPV6 no longer disabled local (loopback) IPV6 traffic. This<br> change is reported to improve Java startup time on some distributions.<br><br>3) Shorewall now contains support for wildcard ports. In<br> /etc/shorewall/hosts, you may specify the port name with trailing "+" then <br> use specific port names in rules.<br><br> Example:<br><br> /etc/shorewall/hosts<br><br> vpn br0:tap+<br><br> /etc/shorewall/rules<br><br> DROP vpn:tap0 vpn:tap1 udp 9999<br><br>4) For the benefit of those who run Shorewall on distributions that don't <br> autoload kernel modules, /etc/shorewall/modules now contains load commands <br> for a wide range of Netfilter modules.<br></pre>
|
||
<span style="font-weight: bold;"></span>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2005-12-13 Shorewall 3.0.3<br>
|
||
</span>
|
||
<pre>Problems Corrected in 3.0.3<br><br>1) The comments in the /etc/shorewall/shorewall.conf and<br> /etc/shorewall/hosts files have been changed to clarify when<br> BRIDGING=Yes is required when dealing with bridges.<br><br>2) Thanks to Tuomo Soini, formatting of the comments in the tcdevices<br> and tcclasses files has been cleaned up.<br><br>3) Specifying 'trace' on the 'safe-start' and 'safe-restart' command no<br> longer fails.<br><br>4) The output of "shorewall help restore" has been corrected. It previously<br> printed incorrect syntax for that command.<br><br>5) The README.txt file in the tarball was stale and contained incorrect<br> information. It has been corrected.<br><br>6) The shorewall.conf default setting of CLEAR_TC was previously "No". Given<br> that the default setting of TC_ENABLED is "Internal", the setting of<br> CLEAR_TC has been changed to the more appropriate value of "Yes".<br><br>7) Specifying an interface name in the SOURCE column of /etc/shorewall/tcrules<br> resulted in a startup error.<br><br>8) When the 'install.sh' script is used on Debian, it now creates<br> /var/log/shorewall-init.log. And if perl is installed on the system then<br> STARTUP_ENABLED=Yes is specified in shorewall.conf (the user must still<br> set startup=1 in /etc/default/shorewall).<br><br>New Features in 3.0.3 <br>
|
||
|
||
1) A "shorewall show macros" command has been added. This command displays
|
||
a list of the standard macros along with a brief description of each.
|
||
|
||
2) The '-q' option is now supported with 'safe-start' and 'safe-restart'.
|
||
|
||
3) The value "-" is now allowed in the ADDRESS/SUBNET column of
|
||
/etc/shorewall/blacklist. That value is equivalent to specifying
|
||
0.0.0.0/0 in that column.
|
||
|
||
4) The output of "shorewall show tc" and "shorewall show classifiers" is
|
||
now included in the output from "shorewall dump". This will aid us in
|
||
analyzing traffic shaping problems.
|
||
|
||
5) You can now specify 'none' in the COPY column of /etc/shorewall/providers
|
||
to signal that you want Shorewall to only copy routes through the interface
|
||
listed in the INTERFACE column.
|
||
|
||
Note: This works on older versions of Shorewall as well. It is
|
||
now documented.
|
||
|
||
6) An 'ipdecimal' command has been added to /sbin/shorewall. This command
|
||
converts between dot-quad and decimal.
|
||
|
||
Example:
|
||
|
||
gateway:/etc/openvpn# shorewall ipdecimal 192.168.1.4
|
||
3232235780
|
||
gateway:/etc/openvpn# shorewall ipdecimal 3232235780
|
||
192.168.1.4
|
||
gateway:/etc/openvpn#
|
||
|
||
7) /etc/init.d/shorewall now supports a 'reload' command which is
|
||
synonymous with the 'restart' command.</pre>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2005-12-12 Shorewall 2.4.7</span><br>
|
||
<br>
|
||
Problems Corrected in 2.4.7<br>
|
||
<br>
|
||
1) When MACLIST_TABLE=mangle and an interface is enabled for DHCP (the<br>
|
||
'dhcp' option is specified in /etc/shorewall/interfaces) then
|
||
broadcasts<br>
|
||
on UDP port 67 to address 255.255.255.255 from address 0.0.0.0 were
|
||
being<br>
|
||
dropped and logged. While this did not prevent the client from
|
||
acquiring<br>
|
||
an IP address, it could result in lots of log messages.<br>
|
||
<br>
|
||
2) Entries for openvpn tunnels (including openvpnclient and<br>
|
||
openvpnserver) that specify a port but no protocol cause startup<br>
|
||
errors as follows:<br>
|
||
<br>
|
||
iptables v1.3.3: unknown protocol `1194' specified<br>
|
||
Try `iptables -h' or 'iptables --help' for more
|
||
information.<br>
|
||
ERROR: Command "/usr/sbin/iptables -A net2fw -p 1194 -s<br>
|
||
0.0.0.0/0 --sport 1194 -j ACCEPT" Failed<br>
|
||
<br>
|
||
The problem may be worked around by specifying the protocol as well<br>
|
||
(e.g., "openvpn:udp:3455).<br>
|
||
<br>
|
||
3) If the previous firewall configuration included a policy other than<br>
|
||
ACCEPT in the nat, mangle or raw tables then Shorewall would not set<br>
|
||
the policy to ACCEPT. This could result in a ruleset that rejected
|
||
or<br>
|
||
dropped all traffic.<br>
|
||
<br>
|
||
4) Specifying an interface name in the SOURCE column <br>
|
||
of /etc/shorewall/tcrules resulted in a startup error.<br>
|
||
<span style="font-weight: bold;"></span>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;"></span><span
|
||
style="font-weight: bold;">2005-12-01 End of Support for Shorewall versions
|
||
2.0 and 2.2<br>
|
||
<br>
|
||
</span>Effective today, versions 2.0 and 2.2 are no longer supported. This
|
||
means that if you find a bug in one of these releases, we won't fix it and if
|
||
you ask for help with one of these releases, we will not spend much time
|
||
trying to solve your issue.<br>
|
||
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2005-11-25 Shorewall 3.0.2<br>
|
||
</span>
|
||
<pre>Problems Corrected in 3.0.2<br><br>1) A couple of typos in the one-interface sample configuration have<br> been corrected.<br><br>2) The 3.0.1 version of Shorewall was incompatible with old versions of<br> the Linux kernel (2.4.7 for example). The new code ignores errors<br> produced when Shorewall 3.x is run on these ancient kernels.<br><br>3) Arch Linux installation routines has been improved.<br><br>New Features in 3.0.2<br><br>1) A new Webmin macro has been added. This macro assumes that Webmin is<br> running on its default port (10000).<br></pre>
|
||
<span style="font-weight: bold;"></span>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">2005-11-18 Shorewall 3.0.1</span><br>
|
||
|
||
<pre>Problems Corrected in 3.0.1 <br>
|
||
|
||
1) If the previous firewall configuration included a policy other than
|
||
ACCEPT in the nat, mangle or raw tables then Shorewall would not set
|
||
the policy to ACCEPT. This could result in a ruleset that rejected or
|
||
dropped all traffic.
|
||
|
||
2) The Makefile was broken such that 'make' didn't always work correctly.
|
||
|
||
3) If the SOURCE or DEST column in a macro body was non-empty and a dash
|
||
("-") appeared in the corresponding column of an invocation of that
|
||
macro, then an invalid rule was generated.
|
||
|
||
4) The comments in the /etc/shorewall/blacklist file have been updated to
|
||
clarify that the PORTS column refers to destination port number/service
|
||
names.
|
||
|
||
5) When CLAMPMSS is set to a value other than "No" and FASTACCEPT=Yes, the
|
||
order of the rules generated was incorrect causing RELATED TCP connections
|
||
to not have CLAMPMSS applied.
|
||
|
||
New Features in 3.0.1
|
||
|
||
1) To make the macro facility more flexible, Shorewall now examines the
|
||
contents of the SOURCE and DEST columns in both the macro body and in
|
||
the invocation and tries to create the intended rule. If the value in
|
||
the invocation appears to be an address (IP or MAC) or the name of an
|
||
ipset, then it is placed after the value in the macro body. Otherwise,
|
||
it is placed before the value in the macro body.
|
||
|
||
Example 1:
|
||
|
||
/etc/shorewall/macro.foo:
|
||
|
||
PARAM - 192.168.1.5 tcp http
|
||
|
||
/etc/shorewallrules:
|
||
|
||
foo/ACCEPT net loc
|
||
|
||
Effective rule:
|
||
|
||
ACCEPT net loc:192.168.1.5 tcp http
|
||
|
||
Example 2:
|
||
|
||
/etc/shorewall/macro.bar:
|
||
|
||
PARAM net loc tcp http
|
||
|
||
/etc/shorewall/rules:
|
||
|
||
bar/ACCEPT - 192.168.1.5
|
||
|
||
Effective rule:
|
||
|
||
ACCEPT net loc:192.168.1.5 tcp http</pre>
|
||
|
||
<p></p>
|
||
<hr style="width: 100%; height: 2px;">
|
||
<span style="font-weight: bold;">11/11/2005 Shorewall 3.0.0</span><br>
|
||
|
||
<pre>New Features in Shorewall 3.0.0<br><br>1) Error and warning messages are made easier to spot by using<br> capitalization (e.g., ERROR: and WARNING:).<br><br>2) A new option 'critical' has been added to<br> /etc/shorewall/routestopped. This option can be used to enable<br> communication with a host or set of hosts during the entire<br> "shorewall [re]start/stop" process. Listing a host with this option<br> differs from listing it without the option in several ways:<br><br> a) The option only affect traffic between the listed host(s) and the<br> firewall itself.<br><br> b) If there are any entries with 'critical', the firewall<br> will be completely opened briefly during start, restart and stop but<br> there will be no chance of any packets to/from the listed host(s)<br> being dropped or rejected.<br><br> Possible uses for this option are:<br><br> a) Root file system is NFS mounted. You will want to list the NFS server<br> in the 'critical' option.<br><br> b) You are running Shorewall in a Crossbeam environment<br> (www.crossbeam.com). You will want to list the Crossbeam interface<br> in this option<br><br>3) A new 'macro' feature has been added.<br><br> Macros are very similar to actions and can be used in similar<br> ways. The differences between actions and macros are as follows:<br><br> a) An action creates a separate chain with the same name as the<br> action (when logging is specified on the invocation of an action,<br> a chain beginning with "%" followed by the name of the action and<br> possibly followed by a number is created). When a macro is<br> invoked, it is expanded in-line and no new chain is created.<br><br> b) An action may be specified as the default action for a policy;<br> macros cannot be specified this way.<br><br> c) Actions must be listed in either /usr/share/shorewall/actions.std<br> or in /etc/shorewall/actions. Macros are defined simply by<br> placing their definition file in the CONFIG_PATH.<br><br> d) Actions are defined in a file with a name beginning with<br> "action." and followed by the name of the action. Macro files are<br> defined in a file with a name beginning with "macro.".<br><br> e) Actions may invoke other actions. Macros may not directly invoke<br> other macros although they may invoke other macros indirectly<br> through an action.<br><br> f) DNAT[-] and REDIRECT[-] rules may not appear in an action. They<br> are allowed in a macro with the restriction that the a macro<br> containing one of these rules may not be invoked from an action.<br><br> g) The values specified in the various columns when you invoke a<br> macro are substituted in the corresponding column in each rule in<br> the macro. The first three columns get special treatment:<br><br> ACTION If you code PARAM as the action in a macro then<br> when you invoke the macro, you can include the<br> name of the macro followed by a slash ("/") and<br> an ACTION (either built-in or user-defined. All<br> instances of PARAM in the body of the macro will be<br> replaced with the ACTION.<br><br> Any logging applied when the macro is invoked is<br> applied following the same rules as for actions.<br><br> SOURCE and<br> DEST If the rule in the macro file specifies a value and<br> the invocation of the rule also specifies a value then<br> the value in the invocation is appended to the value<br> in the rule using ":" as a separator.<br><br> Example:<br><br> /etc/shorewall/macro.SMTP<br><br> PARAM - loc tcp 25<br><br> /etc/shorewall/rules:<br><br> SMTP/DNAT:info net 192.168.1.5<br><br> Would be equivalent to the following in the rules file:<br><br> DNAT:info net loc:192.168.1.5 tcp 25<br><br> Rest Any value in the invocation replaces the value in the<br> rule in the macro.<br><br> One additional restriction applies to the mixing of macros and<br> actions. Macros that are invoked from actions cannot themselves<br> invoke other actions.<br><br>4) If you have 'make' installed on your firewall, then when you use<br> the '-f' option to 'shorewall start' (as happens when you reboot),<br> if your /etc/shorewall/ directory contains files that were modified<br> after Shorewall was last restarted then Shorewall is started using<br> the config files rather than using the saved configuration.<br><br>5) The 'arp_ignore' option has been added to /etc/shorewall/interfaces<br> entries. This option sets<br> /proc/sys/net/ipv4/conf/<interface>/arp_ignore. By default, the<br> option sets the value to 1. You can also write arp_ignore=<value><br> where value is one of the following:<br><br> 1 - reply only if the target IP address is local address<br> configured on the incoming interface<br><br> 2 - reply only if the target IP address is local address<br> configured on the incoming interface and both with the sender's<br> IP address are part from same subnet on this interface<br><br> 3 - do not reply for local addresses configured with scope<br> host, only resolutions for global and link addresses are<br> replied<br><br> 4-7 - reserved<br><br> 8 - do not reply for all local addresses<br><br> WARNING -- DO NOT SPECIFY arp_ignore FOR ANY INTERFACE INVOLVED IN<br> PROXY ARP.<br><br>6) In /etc/shorewall/rules, "all+" in the SOURCE or DEST column works<br> like "all" but also includes intrazone traffic. So the rule:<br><br> ACCEPT loc all+ tcp 22<br><br> would allow SSH traffic from loc->loc whereas<br><br> ACCEPT loc all tcp 22<br><br> does not.<br><br>7) A new FASTACCEPT option has been added to shorewall.conf.<br><br> Normally, Shorewall defers accepting ESTABLISHED/RELATED packets<br> until these packets reach the chain in which the original connection<br> was accepted. So for packets going from the 'loc' zone to the 'net'<br> zone, ESTABLISHED/RELATED packets are ACCEPTED in the 'loc2net'<br> chain.<br><br> If you set FASTACCEPT=Yes, then ESTABLISHED/RELEATED packets are<br> accepted early in the INPUT, FORWARD and OUTPUT chains. If you set<br> FASTACCEPT=Yes then you may not include rules in the ESTABLISHED or<br> RELATED sections of /etc/shorewall/rules.<br><br>8) Shorewall now generates an error if the 'norfc1918' option is<br> specified for an interface with an RFC 1918 address.<br><br>9) You may now specify "!" followed by a list of addresses in the<br> SOURCE and DEST columns of entries in /etc/shorewall/rules,<br> /etc/shorewall/tcrules and in action files and Shorewall will<br> generate the rule that you expect.<br><br> Example 1 (/etc/shorewall/rules):<br><br> #ACTION SOURCE DEST PROTO DEST PORT(S)<br> ACCEPT loc:!192.168.1.0/24,10.0.0.0/8 net tcp 80<br><br> That rule would allow loc->net HTTP access except for the local<br> networks 192.168.1.0/24 and 10.0.0.0/8.<br><br> Example 2 (/etc/shorewall/rules):<br><br> #ACTION SOURCE DEST PROTO DEST PORT(S)<br> ACCEPT loc:10.0.0.0/24!10.0.0.4,10.0.0.22 \<br> net tcp 80<br><br> That rule would allow loc->net HTTP access from the local<br> network 10.0.0.0/24 except for hosts 10.0.0.4 and 10.0.0.22.<br><br>10) Tunnel types "openvpnserver" and "openvpnclient" have been added<br> to reflect the introduction of client and server OpenVPN<br> configurations in OpenVPN 2.0.<br><br>11) The COMMAND variable is now set to 'restore' in restore<br> scripts. The value of this variable is sometimes of interest to<br> programmers providing custom /etc/shorewall/tcstart scripts.<br><br>12) Previously, if you defined any intra-zone rule(s) then any traffic<br> not matching the rule(s) was subject to normal policies (which<br> usually turned out to involve the all->all REJECT policy). Now, the<br> intra-zone ACCEPT policy will still be in effect in the presence of<br> intra-zone rules. That policy can still be overridden by an<br> explicit policy in your /etc/shorewall/policy file.<br><br> Example:<br><br> /etc/shorewall/rules:<br><br> DNAT loc:!192.168.1.4 loc:192.168.1.4:3128 tcp 80<br><br> Any other loc->loc traffic will still be accepted. If you want to<br> also log that other loc->loc traffic at the info log level then<br> insert this into /etc/shorewall/policy:<br><br> #SOURCE DEST POLICY LOG LEVEL<br> loc loc ACCEPT info<br><br>13) Prior to Shorewall 2.5.3, the rules file only controlled packets in<br> the Netfilter states NEW and INVALID. Beginning with this release,<br> the rules file can also deal with packets in the ESTABLISHED and<br> RELATED states.<br><br> The /etc/shorewall/rules file may now be divided into<br> "sections". Each section is introduced by a line that begins with<br> the keyword SECTION followed by the section name. Sections<br> are as listed below and must appear in the order shown.<br><br> ESTABLISHED<br><br> Rules in this section apply to packets in the ESTABLISHED<br> state.<br><br> RELATED<br><br> Rules in this section apply to packets in the RELATED state.<br><br> NEW<br><br> Rules in this section apply to packets in the NEW and INVALID<br> states.<br><br> Rules in the ESTABLISHED and RELATED sections are limited to the<br> following ACTIONs:<br><br> ACCEPT, DROP, REJECT, QUEUE, LOG and User-defined actions.<br><br> Macros may be used in these sections provided that they expand to<br> only these ACTIONs.<br><br> At the end of the ESTABLISHED and RELATED sections, there is an<br> implicit "ALLOW all all all" rule.<br><br> RESTRICTION: If you specify FASTACCEPT=Yes in<br> /etc/shorewall.shorewall.conf then the ESTABLISHED and RELATED<br> sections must be empty.<br><br>14) The value 'ipp2p' is once again allowed in the PROTO column of<br> the rules file. It is recommended that rules specifying 'ipp2p'<br> only be included in the ESTABLISHED section of the file.<br><br><br>15) Shorewall actions lack a generalized way to pass parameters to an<br> extension script associated with an action. To work around this<br> lack, some users have used the log tag as a parameter. This works<br> but requires that a log level other than 'none' be specified when<br> the action is invoked. Beginning with this release, you can invoke<br> an action with 'none'.<br><br> Example:<br><br> #ACTION SOURCE DEST<br> A:none:these,are,parameters $FW net<br><br> When /etc/shorewall/A is invoked, the LEVEL variable will be empty<br> but the TAG variable will contain "these,are,parameters" which<br> can be easily parsed to isolate "these", "are" and "parameters":<br><br> ifs=$IFS<br> IFS=,<br> set -- $TAG<br> IFS=$ifs<span style="font-weight: bold;">2</span><br><br> Now, $1 = these, $2 = are and $3 = parameters<br><br>16) The "shorewall check" command now checks the /etc/shorewall/masq,<br> /etc/shorewall/blacklist, /etc/shorewall/proxyarp,<br> /etc/shorewall/nat and /etc/shorewall/providers files.<br><br>17) Arne Bernin's "tc4shorewall" package has been integrated into<br> Shorewall.<br><br> See: http://www.shorewall.net/3.0/traffic_shaping.htm for details.<br><br> Thanks, Arne!<br><br>18) When /usr/share/shorewall/functions is loaded it now sets<br><span style="font-weight: bold;">2</span><br> SHOREWALL_LIBRARY=Loaded<br><br> Application code such as /etc/shorewall/tcstart may test that<br> variable to determine if the library has been loaded into the<br> current shell process.<br><br>19) The install.sh script now does a much cleaner job of backing up the<br> current installation. It copies the directories /etc/shorewall,<br> /usr/share/shorewall and /var/lib/shorewall to a directory of the<br> same name with "-$VERSION.bkout" appended. The init script and<br> /sbin/shorewall are backed up to the /usr/share/shorewall and<br> /var/lib/shorewall directories respectively. This makes it very<br> simple to remove the backups:<br><br> rm -rf /etc/shorewall-*.bkout<br> rm -rf /usr/share/shorewall-*.bkout<br> rm -rf /var/lib/shorewall-*.bkout<br><br>20) A new '-n' option has been added to the "start", "restart",<br> "restore", "stop" and "try" commands. This option instructs<br> Shorewall to not alter the routing in any way.<br><br> This option is useful when you have a multi-ISP environment because<br> it prevents the route cache from being flushed which preserves the<br> mapping of end-point address pairs to routes.<br><br>21) The output of "shorewall dump" now includes a capabilities report<br> such as the one produced by "shorewall show capabilities".<br><br>22) The "plain" zone type has been replaced by "ipv4". The types<br> "IPv4" and "IPV4" are synonyms for "ipv4". In addition, "IPSEC",<br> "ipsec4" and "IPSEC4" are recognized synonyms for "ipsec".<br><br>23) The NEWNOTSYN and LOGNEWNOTSYN options in shorewall.conf have been<br> removed as have the 'newnotsyn' options in /etc/shorewall/interfaces<br> and /etc/shorewall/hosts. See the Migration Considerations for<br> instructions if you wish to block "new-not-syn" TCP packets.<br><br>24) The "shorewall show zones" command now displays the zone type. You<br> must have restarted Shorewall using this release before this feature<br> will work correctly.<br><br>25) The multi-ISP code now requires that that you set MARK_IN_FORWARD_CHAIN=Yes<br> in shorewall.conf. This is done to ensure that "shorewall refresh" will<br> work correctly.<br><br>26) Shorewall now supports UDP IPP2P matching. In addition to the "ipp2p"<br> keyword in the PROTOCOL column of the relevant files, the following<br> values may be specified:<br><br> ipp2p:tcp Equivalent to ipp2p and matches TCP traffic<br> only.<br> ipp2p:udp Matches UDP traffic.<br> ipp2p:all Matches both UDP and TCP traffic. You may<br> not specify a SOURCE PORT with this PROTOCOL.<br><br>27) Normally MAC verification triggered by the 'maclist' interface and host<br> options is done out of the INPUT and FORWARD chains of the filter table.<br> Users have reported that under some circumstances, MAC verification is<br> failing for forwarded packets when the packets are being forwarded out<br> of a bridge.<br><br> To work around this problem, a MACLIST_TABLE option has been added to<br> shorewall.conf. The default value is MACLIST_TABLE=filter which results<br> in the current behavior. If MACLIST_TABLE=mangle then filtering will<br> take place out of the PREROUTING chain of the mangle table. Because<br> the REJECT target may not be used in the PREROUTING chain, the settings<br> MACLIST_DISPOSITION=REJECT and MACLIST_TABLE=mangle are incompatible.<br><br>28) The sample configurations are now packaged with the product. They are<br> in the Samples directory on the tarball and are in the RPM they are<br> in the Samples sub-directory of the Shorewall documentation<br> directory.<br></pre>
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<span style="font-weight: bold;"></span>
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<hr style="width: 100%; height: 2px;">
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<span style="font-weight: bold;">10/31/2005 Shorewall 2.4.6<br>
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<br>
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</span>Problems Corrected in 2.4.6<br>
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<ol>
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<li>"shorewall refresh" would fail if there were entries in
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/etc/shorewall/tcrules with non-empty USER/GROUP or TEST columns.</li>
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<li>An unprintable character in a comment caused /sbin/shorewall to fail
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when used with a light-weight shell like 'dash'.</li>
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<li>When using some flavors of 'ash', certain /sbin/shorewall commands
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||
produced 'ipset: not found' messages.</li>
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<li>Support for OpenVPN TCP tunnels was released in Shorewall 2.2.0 but the
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||
implementation was incomplete. It has now been completed and is
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||
documented in the /etc/shorewall/tunnels file.</li>
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||
<li>The test that Shorewall uses to detect the availability of the owner
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match capability has been changed to avoid the generation of ipt_owner
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||
messages under kernel 2.6.14.</li>
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||
</ol>
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New Features in 2.4.6<br>
|
||
|
||
<ol>
|
||
<li>Normally MAC verification triggered by the 'maclist' interface and host
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||
options is done out of the INPUT and FORWARD chains of the filter table.
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||
Users have reported that under some circulstances, MAC verification is
|
||
failing for forwarded packets when the packets are being forwarded out of
|
||
a bridge.<br>
|
||
<br>
|
||
To work around this problem, a MACLIST_TABLE option has been added to
|
||
shorewall.conf. The default value is MACLIST_TABLE=filter which results
|
||
in the current behavior. If MACLIST_TABLE=mangle then filtering will take
|
||
place out of the PREROUTING chain of the mangle table. Because the REJECT
|
||
target may not be used in the PREROUTING chain, the settings
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||
MACLIST_DISPOSITION=REJECT and MACLIST_TABLE=mangle are incompatible.</li>
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<li>A "dump" command has been added to /sbin/shorewall for compatibility
|
||
with Shorewall 3.0. In 2.4.6, the "dump" command provides the same output
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as the "status".<br>
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</li>
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||
</ol>
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<span style="font-weight: bold;">Old News <a href="oldnews.html">here</a><br>
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