forked from extern/shorewall_code
b7b4f6d2e8
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@192 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
366 lines
16 KiB
HTML
366 lines
16 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=windows-1252">
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<title>Shorewall 1.3 Errata</title>
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<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
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<meta name="ProgId" content="FrontPage.Editor.Document">
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<meta name="Microsoft Theme" content="boldstri 011, default">
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</head>
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<body>
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<h1 align="center">Shorewall Errata/Upgrade Issues</h1>
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<p align="center">
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<font face="Century Gothic, Arial, Helvetica">
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<b><u>IMPORTANT</u></b></font></p>
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<ol>
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<li>
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<p align="left">
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<b><u>I</u>f you use a Windows system to download a corrected script, be sure to
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run the script through <u>
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<a href="http://www.megaloman.com/%7Ehany/software/hd2u/" style="text-decoration: none">
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dos2unix</a></u>
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after you have moved it to your Linux system.</b></p>
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</li>
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<li>
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<p align="left">
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<b>If you are installing Shorewall for the first time and plan to use the
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.tgz and install.sh script, you can untar the archive, replace the
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'firewall' script in the untarred directory with the one you downloaded
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below, and then run install.sh.</b></p>
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</li>
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<li>
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<p align="left">
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<b>When the instructions say to install a corrected firewall script in
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/etc/shorewall/firewall or /var/lib/shorewall/firewall, use the 'cp' (or 'scp') utility to overwrite the
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existing file. DO NOT REMOVE OR RENAME THE OLD /etc/shorewall/firewall
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or /var/lib/shorewall/firewall before you do that. /etc/shorewall/firewall
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and /var/lib/shorewall/firewall are symbolic links that point
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to the 'shorewall' file used by your system initialization scripts to
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start Shorewall during boot. It is that file that must be overwritten
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with the corrected script. </b></p>
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</li>
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</ol>
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<ul>
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<li><b><a href="#Upgrade">Upgrade Issues</a></b></li>
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<li>
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<b><font color="#660066">
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<a href="errata_1.htm">Problems in Version 1.1</a></font></b></li>
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<li>
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<b><a href="errata_2.htm">Problems in Version 1.2</a></b></li>
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<li>
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<b><a href="#V1.3">Problems in Version 1.3</a></b></li>
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<li>
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<b><font color="#660066"><a href="#iptables">
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Problem with iptables version 1.2.3 on RH7.2</a></font></b></li>
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<li>
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<b><a href="#Debug">Problems with kernels >= 2.4.18 and
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RedHat iptables</a></b></li>
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<li><b><a href="#SuSE">Problems installing/upgrading RPM on SuSE</a></b></li>
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</ul>
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<hr>
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<h2 align="Left"><a name="Upgrade"></a>Upgrade Issues</h2>
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<h3 align="Left">Version >= 1.3.6</h3>
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<p align="Left">If you have a pair of firewall systems configured for
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failover, you will need to modify your firewall setup slightly under
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Shorewall versions >= 1.3.6. </p>
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<ol>
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<li>
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<p align="Left">Create the file /etc/shorewall/newnotsyn and in it add
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the following rule<br>
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<br>
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<font face="Courier">run_iptables -A newnotsyn -j RETURN # So that the
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connection tracking table can be rebuilt<br>
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# from non-SYN packets after takeover.<br>
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</font></li>
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<li>
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<p align="Left">Create /etc/shorewall/common (if you don't already
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have that file) and include the following:<br>
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<br>
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<font face="Courier">run_iptables -A common -p tcp --tcp-flags
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ACK,FIN,RST ACK -j ACCEPT #Accept Acks to rebuild connection<br>
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#tracking table. <br>
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. /etc/shorewall/common.def</font></li>
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</ol>
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<h3 align="Left">Versions >= 1.3.5</h3>
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<p align="Left">Some forms of pre-1.3.0 rules file syntax are no
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longer supported. </p>
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<p align="Left">Example 1:</p>
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<div align="left">
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<pre> ACCEPT net loc:192.168.1.12:22 tcp 11111 - all</pre>
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</div>
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<p align="Left">Must be replaced with:</p>
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<div align="left">
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<pre> DNAT net loc:192.168.1.12:22 tcp 11111</pre>
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</div>
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<div align="left">
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<p align="left">Example 2:</div>
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<div align="left">
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<pre> ACCEPT loc fw::3128 tcp 80 - all</pre>
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</div>
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<div align="left">
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<p align="left">Must be replaced with:</div>
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<div align="left">
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<pre> REDIRECT loc 3128 tcp 80</pre>
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</div>
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<h2 align="Left"><a name="V1.3"></a>Problems in Version 1.3</h2>
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<h3 align="Left">Version 1.3.5-1.3.5b</h3>
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<p align="Left">The new 'proxyarp' interface option doesn't work :-(
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This is fixed in
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.5/firewall">
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this corrected firewall script</a> which must be installed in
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/var/lib/shorewall/ as described above.</p>
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<h3 align="Left">Versions 1.3.4-1.3.5a</h3>
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<p align="Left">Prior to version 1.3.4, host file entries such as the
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following were allowed:</p>
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<div align="left">
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<pre> adm eth0:1.2.4.5,eth0:5.6.7.8</pre>
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</div>
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<div align="left">
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<p align="left">That capability was lost in version 1.3.4 so that it is only
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possible to include a single host specification on each line. This
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problem is corrected by
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.5a/firewall">this
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modified 1.3.5a firewall script</a>. Install the script in /var/lib/pub/shorewall/firewall
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as instructed above.</div>
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<div align="left">
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<p align="left">This problem is corrected in version 1.3.5b.</div>
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<h3 align="Left">Version 1.3.5</h3>
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<p align="Left">REDIRECT rules are broken in this version. Install
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.5/firewall">
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this corrected firewall script</a> in /var/lib/pub/shorewall/firewall
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as instructed above. This problem is corrected in version 1.3.5a.</p>
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<h3 align="Left">Version 1.3.n, n < 4</h3>
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<p align="Left">The "shorewall start" and "shorewall restart" commands
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to not verify that the zones named in the /etc/shorewall/policy file
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have been previously defined in the /etc/shorewall/zones file. The
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"shorewall check" command does perform this verification so it's a
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good idea to run that command after you have made configuration
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changes.</p>
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<h3 align="Left">Version 1.3.n, n < 3</h3>
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<p align="Left">If you have upgraded from Shorewall 1.2 and after
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"Activating rules..." you see the message: "iptables: No
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chains/target/match by that name" then you probably have an entry in
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/etc/shorewall/hosts that specifies an interface that you didn't
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include in /etc/shorewall/interfaces. To correct this problem, you
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must add an entry to /etc/shorewall/interfaces. Shorewall 1.3.3 and
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later versions produce a clearer error message in this case.</p>
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<h3 align="Left">Version 1.3.2</h3>
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<p align="Left">Until approximately 2130 GMT on 17 June 2002, the
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download sites contained an incorrect version of the .lrp file. That
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file can be identified by its size (56284 bytes). The correct version
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has a size of 38126 bytes.</p>
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<ul>
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<li>The code to detect a duplicate interface entry in
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/etc/shorewall/interfaces contained a typo that prevented it from
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working correctly. </li>
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<li>"NAT_BEFORE_RULES=No" was broken; it behaved just like "NAT_BEFORE_RULES=Yes".</li>
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</ul>
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<p align="Left">Both problems are corrected in
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.2/firewall">
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this script</a> which should be installed in <b><u>/var/lib/shorewall</u></b> as described above.</p>
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<ul>
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<li>
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<p align="Left">The IANA have just announced the allocation of subnet
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221.0.0.0/8. This
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.2/rfc1918">
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updated rfc1918</a> file reflects that allocation.</p>
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</li>
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</ul>
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<h3 align="Left">Version 1.3.1</h3>
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<ul>
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<li>TCP SYN packets may be double counted when
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LIMIT:BURST is included in a CONTINUE or ACCEPT policy (i.e., each
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packet is sent through the limit chain twice).</li>
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<li>An unnecessary jump to the policy chain is sometimes
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generated for a CONTINUE policy.</li>
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<li>When an option is given for more than one interface in
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/etc/shorewall/interfaces then depending on the option, Shorewall
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may ignore all but the first appearence of the option. For example:<br>
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<br>
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net eth0 dhcp<br>
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loc eth1 dhcp<br>
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<br>
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Shorewall will ignore the 'dhcp' on eth1.</li>
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<li>Update 17 June 2002 - The bug described in the prior bullet
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affects the following options: dhcp, dropunclean, logunclean,
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norfc1918, routefilter, multi, filterping and noping. An additional
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bug has been found that affects only the 'routestopped' option.<br>
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<br>
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Users who downloaded the corrected script prior to 1850 GMT today
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should download and install the corrected script again to ensure
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that this second problem is corrected.</li>
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</ul>
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<p align="Left">These problems are corrected in
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.1/firewall">
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this firewall script</a> which should be installed in
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/etc/shorewall/firewall as described above.</p>
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<h3 align="Left">Version 1.3.0</h3>
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<ul>
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<li>Folks who downloaded 1.3.0 from the links on the download page
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before 23:40 GMT, 29 May 2002 may have downloaded 1.2.13 rather than
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1.3.0. The "shorewall version" command will tell you which version
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that you have installed.</li>
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<li>The documentation NAT.htm file uses non-existent
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wallpaper and bullet graphic files. The
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<a href="http://www.shorewall.net/pub/shorewall/errata/1.3.0/NAT.htm">
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corrected version is here</a>.</li>
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</ul>
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<hr>
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<h3 align="Left"><a name="iptables"></a><font color="#660066">
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Problem with iptables version 1.2.3</font></h3>
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<blockquote>
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<p align="Left">There are a couple of serious bugs in iptables 1.2.3 that
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prevent it from working with Shorewall. Regrettably,
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RedHat released this buggy iptables in RedHat 7.2. </p>
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<p align="Left"> I have built a <a href="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3-3.i386.rpm">
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corrected 1.2.3 rpm which you can download here</a> and I have also built
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an <a href="ftp://ftp.shorewall.net/pub/shorewall/iptables-1.2.4-1.i386.rpm">
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iptables-1.2.4 rpm which you can download here</a>. If
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you are currently running RedHat 7.1, you can install either of these RPMs
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<b><u>before</u> </b>you upgrade to RedHat 7.2.</p>
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<p align="Left"><font face="Century Gothic, Arial, Helvetica" color="#FF6633"><b>Update
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11/9/2001: </b></font>RedHat has
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released an iptables-1.2.4 RPM of their own which you can download from<font face="Century Gothic, Arial, Helvetica" color="#FF6633">
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<a href="http://www.redhat.com/support/errata/RHSA-2001-144.html">http://www.redhat.com/support/errata/RHSA-2001-144.html</a>.
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</font>I have installed this RPM
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on my firewall and it works fine.</p>
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<p align="Left">If you
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would like to patch iptables 1.2.3 yourself, the patches are available
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for download. This <a href="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3/loglevel.patch">patch</a>
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which corrects a problem with parsing of the --log-level specification while
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this <a href="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3/tos.patch">patch</a>
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corrects a problem in handling the TOS target.</p>
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<p align="Left">To install one of the above patches:</p>
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<ul>
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<li>cd iptables-1.2.3/extensions</li>
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<li>patch -p0 < <i>the-patch-file</i></li>
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</ul>
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</blockquote>
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<h3><a name="Debug"></a>Problems with kernels >= 2.4.18
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and RedHat iptables</h3>
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<blockquote>
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<p>Users who use RedHat iptables RPMs and who upgrade to kernel 2.4.18/19 may
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experience the following:</p>
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<blockquote>
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<pre># shorewall start
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Processing /etc/shorewall/shorewall.conf ...
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Processing /etc/shorewall/params ...
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Starting Shorewall...
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Loading Modules...
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Initializing...
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Determining Zones...
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Zones: net
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Validating interfaces file...
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Validating hosts file...
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Determining Hosts in Zones...
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Net Zone: eth0:0.0.0.0/0
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iptables: libiptc/libip4tc.c:380: do_check: Assertion
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`h->info.valid_hooks == (1 << 0 | 1 << 3)' failed.
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Aborted (core dumped)
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iptables: libiptc/libip4tc.c:380: do_check: Assertion
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`h->info.valid_hooks == (1 << 0 | 1 << 3)' failed.
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Aborted (core dumped)
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</pre>
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</blockquote>
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<p>The RedHat iptables RPM is compiled with debugging enabled but the
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user-space debugging code was not updated to reflect recent changes in the
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Netfilter 'mangle' table. You can correct the problem by installing
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<a href="http://www.shorewall.net/pub/shorewall/iptables-1.2.5-1.i386.rpm">
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this iptables RPM</a>. If you are already running a 1.2.5 version of
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iptables, you will need to specify the --oldpackage option to rpm (e.g.,
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"iptables -Uvh --oldpackage iptables-1.2.5-1.i386.rpm").</p>
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</blockquote>
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<h3><a name="SuSE"></a>Problems
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installing/upgrading RPM on SuSE</h3>
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<p>If you find that rpm complains about a conflict
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with kernel <= 2.2 yet you have a 2.4 kernel
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installed, simply use the "--nodeps" option to
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rpm.</p>
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<p>Installing: rpm -ivh <i><shorewall rpm></i></p>
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<p>Upgrading: rpm -Uvh <i><shorewall rpm></i></p>
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<p><font face="Century Gothic, Arial, Helvetica"><font size="2">
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Last updated 8/7/2002 - </font><font size="2">
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<a href="support.htm">Tom Eastep</a></font>
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</font></p>
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<p><font face="Trebuchet MS"><a href="copyright.htm"><font size="2">Copyright</font>
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<20> <font size="2">2001, 2002 Thomas M. Eastep.</font></a></font></p>
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</body>
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</html> |