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teastep 16de6e1b86 Shorewall 1.4.3a Changes 
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@561 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
2003-05-20 23:21:38 +00:00

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<h1 align="center"><font color="#ffffff">Shorewall News Archive</font></h1>
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<p><b>5/20/2003 - Shorewall-1.4.3a</b><b> </b><b> </b><br>
</p>
This version primarily corrects the documentation included in the .tgz and
in the .rpm. In addition: <br>
<ol>
<li>(This change is in 1.4.3 but is not documented) If you are running iptables
1.2.7a and kernel 2.4.20, then Shorewall will return reject replies as follows:<br>
<20><> a) tcp - RST<br>
<20><> b) udp - ICMP port unreachable<br>
<20><> c) icmp - ICMP host unreachable<br>
<20><> d) Otherwise - ICMP host prohibited<br>
If you are running earlier software, Shorewall will follow it's traditional
convention:<br>
<20><> a) tcp - RST<br>
<20><> b) Otherwise - ICMP port unreachable</li>
<li>UDP port 135 is now silently dropped in the common.def chain. Remember
that this chain is traversed just before a DROP or REJECT policy is enforced.<br>
</li>
</ol>
<p><b>5/18/2003 - Shorewall 1.4.3</b><b> </b><br>
</p>
<20><><EFBFBD> <b>Problems Corrected:<br>
</b>
<ol>
<li>There were several cases where Shorewall would fail to remove a temporary
directory from /tmp. These cases have been corrected.</li>
<li>The rules for allowing all traffic via the loopback interface have
been moved to before the rule that drops status=INVALID packets. This insures
that all loopback traffic is allowed even if Netfilter connection tracking
is confused.</li>
</ol>
<20><><EFBFBD> <b>New Features:<br>
</b>
<ol>
<li><EFBFBD>IPV6-IPV4 (6to4) tunnels are now supported in the /etc/shorewall/tunnels
file.</li>
<li>Shorewall can now be easily integrated with fireparse (http://www.fireparse.com)
by setting LOGMARKER="fp=" in /etc/shorewall/shorewall.conf. Note: You may
not use ULOG with fireparse unless you modify fireparse. </li>
</ol>
<p><b>5/10/2003 - Shorewall Mirror in Asia<br>
</b></p>
<p>Ed Greshko has established a mirror in Taiwan -- Thanks Ed!<br>
</p>
<p><b>5/8/2003 - Shorewall Mirror in Chile</b></p>
Thanks to Darcy Ganga, there is now an HTTP mirror in Santiago
Chile.
<p><b>4/21/2003 - Samples updated for Shorewall version 1.4.2</b></p>
<p>Thanks to Francesca Smith, the sample configurations are now upgraded
to Shorewall version 1.4.2.</p>
<p><b>4/9/2003 - Shorewall 1.4.2</b><br>
</p>
<p><b><EFBFBD><EFBFBD><EFBFBD> Problems Corrected:</b></p>
<blockquote>
<ol>
<li>TCP connection requests rejected out of the <b>common</b> chain
are now properly rejected with TCP RST; previously, some of these requests
were rejected with an ICMP port-unreachable response.</li>
<li>'traceroute -I' from behind the firewall previously timed out
on the first hop (e.g., to the firewall). This has been worked around.</li>
</ol>
</blockquote>
<p><b><EFBFBD><EFBFBD><EFBFBD> New Features:</b></p>
<ol>
<li>Where an entry in the/etc/shorewall/hosts file specifies a particular
host or network, Shorewall now creates an intermediate chain for handling
input from the related zone. This can substantially reduce the number
of rules traversed by connections requests from such zones.<br>
<br>
</li>
<li>Any file may include an INCLUDE directive. An INCLUDE directive
consists of the word INCLUDE followed by a file name and causes the contents
of the named file to be logically included into the file containing the
INCLUDE. File names given in an INCLUDE directive are assumed to reside
in /etc/shorewall or in an alternate configuration directory if one has
been specified for the command. <br>
<20><br>
<20><> Examples:<br>
<20><> shorewall/params.mgmt:<br>
<20><> MGMT_SERVERS=1.1.1.1,2.2.2.2,3.3.3.3<br>
<20><> TIME_SERVERS=4.4.4.4<br>
<20><> BACKUP_SERVERS=5.5.5.5<br>
<20><> ----- end params.mgmt -----<br>
<20><br>
<20><br>
<20><> shorewall/params:<br>
<20><> # Shorewall 1.3 /etc/shorewall/params<br>
<20><> [..]<br>
<20><> #######################################<br>
<20> <br>
<20> <20>INCLUDE params.mgmt<6D><74><EFBFBD> <br>
<20> <br>
<20><> # params unique to this host here<br>
<20><> #LAST LINE - ADD YOUR ENTRIES ABOVE THIS ONE - DO NOT REMOVE<br>
<20><> ----- end params -----<br>
<20><br>
<20><br>
<20><> shorewall/rules.mgmt:<br>
<20><> ACCEPT net:$MGMT_SERVERS<52><53><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> $FW<46><57><EFBFBD> tcp<63><70><EFBFBD> 22<br>
<20><> ACCEPT $FW<46><57><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> net:$TIME_SERVERS<52><53><EFBFBD> udp<64><70><EFBFBD> 123<br>
<20><> ACCEPT $FW<46><57><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> net:$BACKUP_SERVERS<52> tcp<63><70><EFBFBD> 22<br>
<20><> ----- end rules.mgmt -----<br>
<20><br>
<20><> shorewall/rules:<br>
<20><> # Shorewall version 1.3 - Rules File<br>
<20><> [..]<br>
<20><> #######################################<br>
<20><br>
<20><> INCLUDE rules.mgmt<6D><74><EFBFBD><EFBFBD> <br>
<20> <br>
<20><> # rules unique to this host here<br>
<20><> #LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE<br>
<20><> ----- end rules -----<br>
<20><br>
INCLUDE's may be nested to a level of 3 -- further nested INCLUDE
directives are ignored with a warning message.<br>
<br>
</li>
<li>Routing traffic from an interface back out that interface continues
to be a problem. While I firmly believe that this should never happen,
people continue to want to do it. To limit the damage that such nonsense
produces, I have added a new 'routeback' option in /etc/shorewall/interfaces
and /etc/shorewall/hosts. When used in /etc/shorewall/interfaces, the
'ZONE' column may not contain '-'; in other words, 'routeback' can't
be used as an option for a multi-zone interface. The 'routeback' option
CAN be specified however on individual group entries in /etc/shorewall/hosts.<br>
<20><br>
The 'routeback' option is similar to the old 'multi' option with
two exceptions:<br>
<20><br>
<20><> a) The option pertains to a particular zone,interface,address
tuple.<br>
<20><br>
<20><> b) The option only created infrastructure to pass traffic from
(zone,interface,address) tuples back to themselves (the 'multi' option
affected all (zone,interface,address) tuples associated with the given
'interface').<br>
<20><br>
See the '<a href="upgrade_issues.htm">Upgrade Issues</a>' for information
about how this new option may affect your configuration.<br>
</li>
</ol>
<p><b>3/24/2003 - Shorewall 1.4.1</b><b> </b></p>
<b> </b>
<p>This release follows up on 1.4.0. It corrects a problem introduced in 1.4.0
and removes additional warts.<br>
<br>
<b>Problems Corrected:</b><br>
</p>
<ol>
<li>When Shorewall 1.4.0 is run under the ash shell (such as on
Bering/LEAF), it can attempt to add ECN disabling rules even if the /etc/shorewall/ecn
file is empty. That problem has been corrected so that ECN disabling rules
are only added if there are entries in /etc/shorewall/ecn.</li>
</ol>
<b>New Features:</b><br>
<blockquote>Note: In the list that follows, the term <i>group </i>refers
to a particular network or subnetwork (which may be 0.0.0.0/0 or it may be
a host address) accessed through a particular interface. Examples:<br>
<blockquote>eth0:0.0.0.0/0<br>
eth2:192.168.1.0/24<br>
eth3:192.0.2.123<br>
</blockquote>
You can use the "shorewall check" command to see the groups associated
with each of your zones.<br>
</blockquote>
<ol>
<li>Beginning with Shorewall 1.4.1, if a zone Z comprises more than
one group<i> </i>then if there is no explicit Z to Z policy and there
are no rules governing traffic from Z to Z then Shorewall will permit all
traffic between the groups in the zone.</li>
<li>Beginning with Shorewall 1.4.1, Shorewall will never create
rules to handle traffic from a group to itself.</li>
<li>A NONE policy is introduced in 1.4.1. When a policy of NONE
is specified from Z1 to Z2:</li>
</ol>
<ul>
<li>There may be no rules created that govern connections from Z1
to Z2.</li>
<li>Shorewall will not create any infrastructure to handle traffic
from Z1 to Z2.</li>
</ul>
See the <a href="upgrade_issues.htm">upgrade issues</a> for a discussion
of how these changes may affect your configuration.
<p><b>3/17/2003 - Shorewall 1.4.0</b><b> </b></p>
Shorewall 1.4 represents
the next step in the evolution of Shorewall. The main thrust of the
initial release is simply to remove the cruft that has accumulated in
Shorewall over time. <br>
<br>
<b>IMPORTANT: Shorewall 1.4.0 requires</b> <b>the iproute package
('ip' utility).</b><br>
<br>
Function from 1.3 that has been omitted from this version
include:<br>
<ol>
<li>The MERGE_HOSTS variable in shorewall.conf is no
longer supported. Shorewall 1.4 behavior is the same as 1.3 with MERGE_HOSTS=Yes.<br>
<br>
</li>
<li>Interface names of the form &lt;device&gt;:&lt;integer&gt;
in /etc/shorewall/interfaces now generate an error.<br>
<br>
</li>
<li>Shorewall 1.4 implements behavior consistent with OLD_PING_HANDLING=No.
OLD_PING_HANDLING=Yes will generate an error at startup as will specification
of the 'noping' or 'filterping' interface options.<br>
<br>
</li>
<li>The 'routestopped' option in the /etc/shorewall/interfaces
and /etc/shorewall/hosts files is no longer supported and will generate
an error at startup if specified.<br>
<br>
</li>
<li>The Shorewall 1.2 syntax for DNAT and REDIRECT rules
is no longer accepted.<br>
<br>
</li>
<li>The ALLOWRELATED variable in shorewall.conf is no longer
supported. Shorewall 1.4 behavior is the same as 1.3 with ALLOWRELATED=Yes.<br>
<br>
</li>
<li>The icmp.def file has been removed.<br>
</li>
</ol>
Changes for 1.4 include:<br>
<ol>
<li>The /etc/shorewall/shorewall.conf file has been completely
reorganized into logical sections.<br>
<br>
</li>
<li>LOG is now a valid action for a rule (/etc/shorewall/rules).<br>
<br>
</li>
<li>The firewall script and version file are now installed
in /usr/share/shorewall.<br>
<br>
</li>
<li>Late arriving DNS replies are now silently dropped
in the common chain by default.<br>
<br>
</li>
<li>In addition to behaving like OLD_PING_HANDLING=No,
Shorewall 1.4 no longer unconditionally accepts outbound ICMP packets.
So if you want to 'ping' from the firewall, you will need the appropriate
rule or policy.<br>
<br>
</li>
<li>CONTINUE is now a valid action for a rule (/etc/shorewall/rules).<br>
<br>
</li>
<li>802.11b devices with names of the form wlan&lt;n&gt; now
support the 'maclist' option.<br>
<br>
</li>
<li>Explicit Congestion Notification (ECN - RFC 3168) may now
be turned off on a host or network basis using the new /etc/shorewall/ecn
file. To use this facility:<br>
<br>
<20><> a) You must be running kernel 2.4.20<br>
<20><> b) You must have applied the patch in<br>
<20><> http://www.shorewall/net/pub/shorewall/ecn/patch.<br>
<20><> c) You must have iptables 1.2.7a installed.<br>
<br>
</li>
<li>The /etc/shorewall/params file is now processed first so
that variables may be used in the /etc/shorewall/shorewall.conf file.<br>
<br>
</li>
<li value="10">Shorewall now gives a more helpful diagnostic when
the 'ipchains' compatibility kernel module is loaded and a 'shorewall
start' command is issued.<br>
<br>
</li>
<li>The SHARED_DIR variable has been removed from shorewall.conf.
This variable was for use by package maintainers and was not documented
for general use.<br>
<br>
</li>
<li>Shorewall now ignores 'default' routes when detecting masq'd
networks.</li>
</ol>
<p><b>3/10/2003 - Shoreall 1.3.14a</b></p>
<p>A roleup of the following bug fixes and other updates:</p>
<ul>
<li>There is an updated rfc1918 file that reflects the resent allocation
of 222.0.0.0/8 and 223.0.0.0/8.</li>
</ul>
<ul>
<li>The documentation for the routestopped file claimed that a
comma-separated list could appear in the second column while the
code only supported a single host or network address.</li>
<li>Log messages produced by 'logunclean' and 'dropunclean' were
not rate-limited.</li>
<li>802.11b devices with names of the form <i>wlan</i>&lt;n&gt;
don't support the 'maclist' interface option.</li>
<li>Log messages generated by RFC 1918 filtering are not rate limited.</li>
<li>The firewall fails to start in the case where you have "eth0
eth1" in /etc/shorewall/masq and the default route is through eth1</li>
</ul>
<p><b>2/8/2003 - Shoreawall 1.3.14</b></p>
<p>New features include</p>
<ol>
<li>An OLD_PING_HANDLING option has been added to shorewall.conf.
When set to Yes, Shorewall ping handling is as it has always been
(see http://www.shorewall.net/ping.html).<br>
<br>
When OLD_PING_HANDLING=No, icmp echo (ping) is handled
via rules and policies just like any other connection request.
The FORWARDPING=Yes option in shorewall.conf and the 'noping' and
'filterping' options in /etc/shorewall/interfaces will all generate
an error.<br>
<br>
</li>
<li>It is now possible to direct Shorewall to create
a "label" such as<61> "eth0:0" for IP addresses that it creates under
ADD_IP_ALIASES=Yes and ADD_SNAT_ALIASES=Yes. This is done by specifying
the label instead of just the interface name:<br>
<20><br>
<20><> a) In the INTERFACE column of /etc/shorewall/masq<br>
<20><> b) In the INTERFACE column of /etc/shorewall/nat<br>
<20></li>
<li>Support for OpenVPN Tunnels.<br>
<br>
</li>
<li>Support for VLAN devices with names of the form
$DEV.$VID (e.g., eth0.0)<br>
<br>
</li>
<li>In /etc/shorewall/tcrules, the MARK value may be
optionally followed by ":" and either 'F' or 'P' to designate that
the marking will occur in the FORWARD or PREROUTING chains respectively.
If this additional specification is omitted, the chain used to mark
packets will be determined by the setting of the MARK_IN_FORWARD_CHAIN
option in <a href="Documentation.htm#Conf">shorewall.conf</a>.<br>
<br>
</li>
<li>When an interface name is entered in the SUBNET
column of the /etc/shorewall/masq file, Shorewall previously masqueraded
traffic from only the first subnet defined on that interface.
It did not masquerade traffic from:<br>
<20><br>
<20><> a) The subnets associated with other addresses
on the interface.<br>
<20><> b) Subnets accessed through local routers.<br>
<20><br>
Beginning with Shorewall 1.3.14, if you enter an
interface name in the SUBNET column, shorewall will use the firewall's
routing table to construct the masquerading/SNAT rules.<br>
<20><br>
Example 1 -- This is how it works in 1.3.14.<br>
<20><> <br>
<pre><EFBFBD><EFBFBD> [root@gateway test]# cat /etc/shorewall/masq<br> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> eth2<68><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<pre><EFBFBD> [root@gateway test]# ip route show dev eth2<br> 192.168.1.0/24<32> scope link<br> 192.168.10.0/24<32> proto kernel<65> scope link<6E> src 192.168.10.254<br></pre>
<pre><EFBFBD> [root@gateway test]# shorewall start<br> ...<br> Masqueraded Subnets and Hosts:<br> To 0.0.0.0/0 from 192.168.1.0/24 through eth0 using 206.124.146.176<br> To 0.0.0.0/0 from 192.168.10.0/24 through eth0 using 206.124.146.176<br> Processing /etc/shorewall/tos...</pre>
<20><br>
When upgrading to Shorewall 1.3.14, if you have
multiple local subnets connected to an interface that is specified
in the SUBNET column of an /etc/shorewall/masq entry, your /etc/shorewall/masq
file will need changing. In most cases, you will simply be able to
remove redundant entries. In some cases though, you might want to change
from using the interface name to listing specific subnetworks if the change
described above will cause masquerading to occur on subnetworks that you
don't wish to masquerade.<br>
<20><br>
Example 2 -- Suppose that your current config is
as follows:<br>
<20><> <br>
<pre><EFBFBD><EFBFBD> [root@gateway test]# cat /etc/shorewall/masq<br> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> eth2<68><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 192.168.10.0/24<32><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<pre><EFBFBD><EFBFBD> [root@gateway test]# ip route show dev eth2<br> 192.168.1.0/24<32> scope link<br> 192.168.10.0/24<32> proto kernel<65> scope link<6E> src 192.168.10.254<br> [root@gateway test]#</pre>
<20><br>
<20><> In this case, the second entry in /etc/shorewall/masq
is no longer required.<br>
<20><br>
Example 3 -- What if your current configuration
is like this?<br>
<20><br>
<pre><EFBFBD><EFBFBD> [root@gateway test]# cat /etc/shorewall/masq<br> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> eth2<68><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<pre><EFBFBD><EFBFBD> [root@gateway test]# ip route show dev eth2<br> 192.168.1.0/24<32> scope link<br> 192.168.10.0/24<32> proto kernel<65> scope link<6E> src 192.168.10.254<br> [root@gateway test]#</pre>
<20><br>
<20><> In this case, you would want to change the entry
in<69> /etc/shorewall/masq to:<br>
<pre><EFBFBD><EFBFBD> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 192.168.1.0/24<32><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
</li>
</ol>
<p><br>
<b>2/5/2003 - Shorewall Support included in Webmin 1.060</b></p>
<p>Webmin version 1.060 now has Shorewall support included as standard. See
<a href="http://www.webmin.com">http://www.webmin.com</a>.<br>
<b><br>
2/4/2003 - Shorewall 1.3.14-RC1</b></p>
<p>Includes the Beta 2 content plus support for OpenVPN tunnels.</p>
<p><b>1/28/2003 - Shorewall 1.3.14-Beta2</b></p>
<p>Includes the Beta 1 content plus restores VLAN device names of the form
$dev.$vid (e.g., eth0.1)</p>
<p><b>1/25/2003 - Shorewall 1.3.14-Beta1</b><br>
</p>
<p>The Beta includes the following changes:<br>
</p>
<ol>
<li>An OLD_PING_HANDLING option has been added
to shorewall.conf. When set to Yes, Shorewall ping handling is
as it has always been (see http://www.shorewall.net/ping.html).<br>
<br>
When OLD_PING_HANDLING=No, icmp echo (ping) is handled
via rules and policies just like any other connection request.
The FORWARDPING=Yes option in shorewall.conf and the 'noping' and
'filterping' options in /etc/shorewall/interfaces will all generate
an error.<br>
<br>
</li>
<li>It is now possible to direct Shorewall to
create a "label" such as<61> "eth0:0" for IP addresses that it creates
under ADD_IP_ALIASES=Yes and ADD_SNAT_ALIASES=Yes. This is done
by specifying the label instead of just the interface name:<br>
<20><br>
<20><> a) In the INTERFACE column of /etc/shorewall/masq<br>
<20><> b) In the INTERFACE column of /etc/shorewall/nat<br>
<20></li>
<li>When an interface name is entered in the SUBNET
column of the /etc/shorewall/masq file, Shorewall previously masqueraded
traffic from only the first subnet defined on that interface. It
did not masquerade traffic from:<br>
<20><br>
<20><> a) The subnets associated with other addresses
on the interface.<br>
<20><> b) Subnets accessed through local routers.<br>
<20><br>
Beginning with Shorewall 1.3.14, if you enter an
interface name in the SUBNET column, shorewall will use the firewall's
routing table to construct the masquerading/SNAT rules.<br>
<20><br>
Example 1 -- This is how it works in 1.3.14.<br>
<20><> <br>
<pre><EFBFBD><EFBFBD> [root@gateway test]# cat /etc/shorewall/masq<br> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> eth2<68><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<pre><EFBFBD> [root@gateway test]# ip route show dev eth2<br> 192.168.1.0/24<32> scope link<br> 192.168.10.0/24<32> proto kernel<65> scope link<6E> src 192.168.10.254<br></pre>
<pre><EFBFBD> [root@gateway test]# shorewall start<br> ...<br> Masqueraded Subnets and Hosts:<br> To 0.0.0.0/0 from 192.168.1.0/24 through eth0 using 206.124.146.176<br> To 0.0.0.0/0 from 192.168.10.0/24 through eth0 using 206.124.146.176<br> Processing /etc/shorewall/tos...</pre>
<20><br>
When upgrading to Shorewall 1.3.14, if you have
multiple local subnets connected to an interface that is specified
in the SUBNET column of an /etc/shorewall/masq entry, your /etc/shorewall/masq
file will need changing. In most cases, you will simply be able to
remove redundant entries. In some cases though, you might want to change
from using the interface name to listing specific subnetworks if the change
described above will cause masquerading to occur on subnetworks that you
don't wish to masquerade.<br>
<20><br>
Example 2 -- Suppose that your current config is
as follows:<br>
<20><> <br>
<pre><EFBFBD><EFBFBD> [root@gateway test]# cat /etc/shorewall/masq<br> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> eth2<68><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 192.168.10.0/24<32><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<pre><EFBFBD><EFBFBD> [root@gateway test]# ip route show dev eth2<br> 192.168.1.0/24<32> scope link<br> 192.168.10.0/24<32> proto kernel<65> scope link<6E> src 192.168.10.254<br> [root@gateway test]#</pre>
<20><br>
<20><> In this case, the second entry in /etc/shorewall/masq
is no longer required.<br>
<20><br>
Example 3 -- What if your current configuration
is like this?<br>
<20><br>
<pre><EFBFBD><EFBFBD> [root@gateway test]# cat /etc/shorewall/masq<br> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> eth2<68><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<pre><EFBFBD><EFBFBD> [root@gateway test]# ip route show dev eth2<br> 192.168.1.0/24<32> scope link<br> 192.168.10.0/24<32> proto kernel<65> scope link<6E> src 192.168.10.254<br> [root@gateway test]#</pre>
<20><br>
<20><> In this case, you would want to change the entry
in<69> /etc/shorewall/masq to:<br>
<pre><EFBFBD><EFBFBD> #INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> SUBNET<45><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ADDRESS<br> eth0<68><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 192.168.1.0/24<32><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 206.124.146.176<br> #LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
<b> </b></li>
</ol>
<p><b>1/18/2003 - Shorewall 1.3.13 Documentation in PDF Format</b></p>
<p>Juraj Ontkanin has produced a PDF containing the Shorewall 1.3.13 documenation.
the PDF may be downloaded from</p>
<20><><EFBFBD> <a
href="ftp://slovakia.shorewall.net/mirror/shorewall/pdf/"
target="_self">ftp://slovakia.shorewall.net/mirror/shorewall/pdf/</a><br>
<20><><EFBFBD> <a
href="http://slovakia.shorewall.net/pub/shorewall/pdf/">http://slovakia.shorewall.net/pub/shorewall/pdf/</a>
<p><b>1/17/2003 - shorewall.net has MOVED</b><b><EFBFBD></b></p>
<p>Thanks to the generosity of Alex Martin and <a
href="http://www.rettc.com">Rett Consulting</a>, www.shorewall.net and
ftp.shorewall.net are now hosted on a system in Bellevue, Washington. A
big thanks to Alex for making this happen.<br>
</p>
<p><b>1/13/2003 - Shorewall 1.3.13<br>
</b></p>
<p>Just includes a few things that I had on the burner:<br>
</p>
<ol>
<li>A new 'DNAT-' action has been added for
entries in the /etc/shorewall/rules file. DNAT- is intended
for advanced users who wish to minimize the number of rules that
connection requests must traverse.<br>
<br>
A Shorewall DNAT rule actually generates two
iptables rules: a header rewriting rule in the 'nat' table and
an ACCEPT rule in the 'filter' table. A DNAT- rule only generates
the first of these rules. This is handy when you have several DNAT
rules that would generate the same ACCEPT rule.<br>
<br>
<20><> Here are three rules from my previous rules
file:<br>
<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DNAT<41><54> net<65> dmz:206.124.146.177 tcp
smtp - 206.124.146.178<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DNAT<41><54> net<65> dmz:206.124.146.177 tcp
smtp - 206.124.146.179<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ACCEPT net<65> dmz:206.124.146.177 tcp
www,smtp,ftp,...<br>
<br>
<20><> These three rules ended up generating _three_
copies of<br>
<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ACCEPT net<65> dmz:206.124.146.177 tcp
smtp<br>
<br>
<20><> By writing the rules this way, I end up with
only one copy of the ACCEPT rule.<br>
<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DNAT-<2D> net<65> dmz:206.124.146.177 tcp
smtp -<2D> 206.124.146.178<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> DNAT-<2D> net<65> dmz:206.124.146.177 tcp
smtp -<2D> 206.124.146.179<br>
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ACCEPT net<65> dmz:206.124.146.177 tcp
www,smtp,ftp,....<br>
<br>
</li>
<li>The 'shorewall check' command now prints
out the applicable policy between each pair of zones.<br>
<br>
</li>
<li>A new CLEAR_TC option has been added to
shorewall.conf. If this option is set to 'No' then Shorewall
won't clear the current traffic control rules during [re]start.
This setting is intended for use by people that prefer to configure
traffic shaping when the network interfaces come up rather than when
the firewall is started. If that is what you want to do, set TC_ENABLED=Yes
and CLEAR_TC=No and do not supply an /etc/shorewall/tcstart file.
That way, your traffic shaping rules can still use the 'fwmark' classifier
based on packet marking defined in /etc/shorewall/tcrules.<br>
<br>
</li>
<li>A new SHARED_DIR variable has been added
that allows distribution packagers to easily move the shared directory
(default /usr/lib/shorewall). Users should never have a need
to change the value of this shorewall.conf setting.<br>
</li>
</ol>
<p><b>1/6/2003 - <big><big><big>BURNOUT</big></big></big></b><b>
</b></p>
<p><b>Until further notice, I will not be involved in either Shorewall Development
or Shorewall Support</b></p>
<p><b>-Tom Eastep</b><br>
</p>
<p><b>12/30/2002 - Shorewall Documentation in PDF Format</b></p>
<p>Juraj Ontkanin has produced a PDF containing the Shorewall 1.3.12 documenation.
the PDF may be downloaded from</p>
<p><EFBFBD><EFBFBD><EFBFBD> <a href="ftp://slovakia.shorewall.net/mirror/shorewall/pdf/"
target="_self">ftp://slovakia.shorewall.net/mirror/shorewall/pdf/</a><br>
<20><><EFBFBD> <a
href="http://slovakia.shorewall.net/pub/shorewall/pdf/">http://slovakia.shorewall.net/pub/shorewall/pdf/</a><br>
</p>
<p><b>12/27/2002 - Shorewall 1.3.12 Released</b></p>
<p> Features include:<br>
</p>
<ol>
<li>"shorewall refresh" now reloads the
traffic shaping rules (tcrules and tcstart).</li>
<li>"shorewall debug [re]start" now turns
off debugging after an error occurs. This places the point
of the failure near the end of the trace rather than up in the
middle of it.</li>
<li>"shorewall [re]start" has been speeded
up by more than 40% with my configuration. Your milage may
vary.</li>
<li>A "shorewall show classifiers" command
has been added which shows the current packet classification
filters. The output from this command is also added as a
separate page in "shorewall monitor"</li>
<li>ULOG (must be all caps) is now accepted
as a valid syslog level and causes the subject packets to
be logged using the ULOG target rather than the LOG target. This
allows you to run ulogd (available from <a
href="http://www.gnumonks.org/projects/ulogd">http://www.gnumonks.org/projects/ulogd</a>)
and log all Shorewall messages <a
href="shorewall_logging.html">to a separate log file</a>.</li>
<li>If you are running a kernel that has
a FORWARD chain in the mangle table ("shorewall show mangle"
will show you the chains in the mangle table), you can set
MARK_IN_FORWARD_CHAIN=Yes in <a href="Documentation.htm#Conf">shorewall.conf</a>.
This allows for marking input packets based on their destination
even when you are using Masquerading or SNAT.</li>
<li>I have cluttered up the /etc/shorewall
directory with empty 'init', 'start', 'stop' and 'stopped'
files. If you already have a file with one of these names, don't
worry -- the upgrade process won't overwrite your file.</li>
<li>I have added a new RFC1918_LOG_LEVEL
variable to <a href="Documentation.htm#Conf">shorewall.conf</a>.
This variable specifies the syslog level at which packets
are logged as a result of entries in the /etc/shorewall/rfc1918
file. Previously, these packets were always logged at the 'info'
level.<br>
</li>
</ol>
<p><b>12/20/2002 - Shorewall 1.3.12 Beta 3<br>
</b></p>
This version corrects a problem with Blacklist
logging. In Beta 2, if BLACKLIST_LOG_LEVEL was set to anything
but ULOG, the firewall would fail to start and "shorewall refresh"
would also fail.<br>
<p><b>12/20/2002 - Shorewall 1.3.12 Beta 2</b></p>
<p>The first public Beta version of Shorewall 1.3.12 is now available (Beta
1 was made available only to a limited audience).<br>
</p>
Features include:<br>
<ol>
<li>"shorewall refresh" now reloads
the traffic shaping rules (tcrules and tcstart).</li>
<li>"shorewall debug [re]start" now
turns off debugging after an error occurs. This places
the point of the failure near the end of the trace rather than
up in the middle of it.</li>
<li>"shorewall [re]start" has been
speeded up by more than 40% with my configuration. Your milage
may vary.</li>
<li>A "shorewall show classifiers"
command has been added which shows the current packet classification
filters. The output from this command is also added as a separate
page in "shorewall monitor"</li>
<li>ULOG (must be all caps) is now
accepted as a valid syslog level and causes the subject packets
to be logged using the ULOG target rather than the LOG target.
This allows you to run ulogd (available from <a
href="http://www.gnumonks.org/projects/ulogd">http://www.gnumonks.org/projects/ulogd</a>)
and log all Shorewall messages <a
href="shorewall_logging.html">to a separate log file</a>.</li>
<li>If you are running a kernel that
has a FORWARD chain in the mangle table ("shorewall show
mangle" will show you the chains in the mangle table), you can
set MARK_IN_FORWARD_CHAIN=Yes in shorewall.conf. This allows for
marking input packets based on their destination even when you
are using Masquerading or SNAT.</li>
<li>I have cluttered up the /etc/shorewall
directory with empty 'init', 'start', 'stop' and 'stopped'
files. If you already have a file with one of these names, don't
worry -- the upgrade process won't overwrite your file.</li>
</ol>
You may download the Beta from:<br>
<blockquote><a href="http://www.shorewall.net/pub/shorewall/Beta">http://www.shorewall.net/pub/shorewall/Beta</a><br>
<a
href="ftp://ftp.shorewall.net/pub/shorewall/Beta" target="_top">ftp://ftp.shorewall.net/pub/shorewall/Beta</a><br>
</blockquote>
<p><b>12/12/2002 - Mandrake Multi Network Firewall <a
href="http://www.mandrakesoft.com"><img src="images/logo2.png"
alt="Powered by Mandrake Linux" width="140" height="21" border="0">
</a></b></p>
Shorewall is at the center of MandrakeSoft's
recently-announced <a
href="http://www.mandrakestore.com/mdkinc/index.php?PAGE=tab_0/menu_0.php&amp;id_art=250&amp;LANG_=en#GOTO_250">Multi
Network Firewall (MNF)</a> product. Here is the <a
href="http://www.mandrakesoft.com/company/press/pr?n=/pr/products/2403">press
release</a>.<br>
<p><b>12/7/2002 - Shorewall Support for Mandrake 9.0</b></p>
<p>Two months and 3 days after I ordered Mandrake 9.0, it was finally delivered.
I have installed 9.0 on one of my systems and I am now
in a position to support Shorewall users who run Mandrake 9.0.</p>
<p><b>12/6/2002 - Debian 1.3.11a Packages Available<br>
</b></p>
<p>Apt-get sources listed at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html.</a></p>
<p><b>12/3/2002 - Shorewall 1.3.11a</b></p>
<p>This is a bug-fix roll up which includes Roger Aich's fix for DNAT with
excluded subnets (e.g., "DNAT foo!bar ..."). Current
1.3.11 users who don't need rules of this type need not upgrade
to 1.3.11.</p>
<p><b>11/24/2002 - Shorewall 1.3.11</b></p>
<p>In this version:</p>
<ul>
<li>A 'tcpflags' option has
been added to entries in <a
href="Documentation.htm#Interfaces">/etc/shorewall/interfaces</a>.
This option causes Shorewall to make a set of sanity check on TCP
packet header flags.</li>
<li>It is now allowed to use
'all' in the SOURCE or DEST column in a <a
href="Documentation.htm#Rules">rule</a>. When used, 'all' must appear
by itself (in may not be qualified) and it does not enable intra-zone
traffic. For example, the rule <br>
<br>
<20> <20> ACCEPT loc all tcp 80<br>
<br>
does not enable http traffic
from 'loc' to 'loc'.</li>
<li>Shorewall's use of the
'echo' command is now compatible with bash clones such
as ash and dash.</li>
<li>fw-&gt;fw policies now
generate a startup error. fw-&gt;fw rules generate a
warning and are ignored</li>
</ul>
<p><b>11/14/2002 - Shorewall Documentation in PDF Format</b></p>
<p>Juraj Ontkanin has produced a PDF containing the Shorewall 1.3.10 documenation.
the PDF may be downloaded from</p>
<p><EFBFBD><EFBFBD><EFBFBD> <a href="ftp://slovakia.shorewall.net/mirror/shorewall/pdf/"
target="_self">ftp://slovakia.shorewall.net/mirror/shorewall/pdf/</a><br>
<20><><EFBFBD> <a
href="http://slovakia.shorewall.net/pub/shorewall/pdf/">http://slovakia.shorewall.net/pub/shorewall/pdf/</a><br>
</p>
<p><b>11/09/2002 - Shorewall is Back at SourceForge</b><b>
</b></p>
<p>The main Shorewall 1.3 web site is now back at SourceForge at <a
href="http://shorewall.sf.net" target="_top">http://shorewall.sf.net</a>.<br>
</p>
<p><b>11/09/2002 - Shorewall 1.3.10</b></p>
<p>In this version:</p>
<ul>
<li>You may now <a
href="IPSEC.htm#Dynamic">define the contents of a zone dynamically</a>
with the <a href="starting_and_stopping_shorewall.htm">"shorewall
add" and "shorewall delete" commands</a>. These commands
are expected to be used primarily within <a
href="http://www.xs4all.nl/%7Efreeswan/">FreeS/Wan</a> updown
scripts.</li>
<li>Shorewall can now do<a
href="MAC_Validation.html"> MAC verification</a> on ethernet segments.
You can specify the set of allowed MAC addresses on the segment
and you can optionally tie each MAC address to one or more IP addresses.</li>
<li>PPTP Servers and Clients
running on the firewall system may now be defined in
the<a href="PPTP.htm"> /etc/shorewall/tunnels</a> file.</li>
<li>A new 'ipsecnat' tunnel
type is supported for use when the <a
href="IPSEC.htm">remote IPSEC endpoint is behind a NAT gateway</a>.</li>
<li>The PATH used by Shorewall
may now be specified in <a
href="Documentation.htm#Conf">/etc/shorewall/shorewall.conf.</a></li>
<li>The main firewall script
is now /usr/lib/shorewall/firewall. The script in /etc/init.d/shorewall
is very small and uses /sbin/shorewall to do the real
work. This change makes custom distributions such as for Debian
and for Gentoo easier to manage since it is /etc/init.d/shorewall
that tends to have distribution-dependent code</li>
</ul>
<p><b>10/24/2002 - Shorewall is now in Gentoo Linux</b><b> </b><a
href="http://www.gentoo.org"><br>
</a></p>
Alexandru Hartmann reports
that his Shorewall package is now a part of <a
href="http://www.gentoo.org">the Gentoo Linux distribution</a>.
Thanks Alex!<br>
<p><b>10/23/2002 - Shorewall 1.3.10 Beta 1</b><b> </b></p>
In this version:<br>
<ul>
<li>You may now <a
href="IPSEC.htm#Dynamic">define the contents of a zone dynamically</a>
with the <a href="starting_and_stopping_shorewall.htm">"shorewall
add" and "shorewall delete" commands</a>. These commands
are expected to be used primarily within <a
href="http://www.xs4all.nl/%7Efreeswan/">FreeS/Wan</a> updown
scripts.</li>
<li>Shorewall can now do<a
href="MAC_Validation.html"> MAC verification</a> on ethernet segments.
You can specify the set of allowed MAC addresses on
the segment and you can optionally tie each MAC address to
one or more IP addresses.</li>
<li>PPTP Servers and Clients
running on the firewall system may now be defined
in the<a href="PPTP.htm"> /etc/shorewall/tunnels</a> file.</li>
<li>A new 'ipsecnat' tunnel
type is supported for use when the <a
href="IPSEC.htm">remote IPSEC endpoint is behind a NAT gateway</a>.</li>
<li>The PATH used by Shorewall
may now be specified in <a
href="Documentation.htm#Conf">/etc/shorewall/shorewall.conf.</a></li>
<li>The main firewall script
is now /usr/lib/shorewall/firewall. The script in
/etc/init.d/shorewall is very small and uses /sbin/shorewall
to do the real work. This change makes custom distributions
such as for Debian and for Gentoo easier to manage since
it is /etc/init.d/shorewall that tends to have distribution-dependent
code.</li>
</ul>
You may download the Beta
from:<br>
<ul>
<li><a
href="http://www.shorewall.net/pub/shorewall/Beta">http://www.shorewall.net/pub/shorewall/Beta</a></li>
<li><a
href="ftp://ftp.shorewall.net/pub/shorewall/Beta" target="_top">ftp://ftp.shorewall.net/pub/shorewall/Beta</a></li>
</ul>
<p><b>10/10/2002 - <20>Debian 1.3.9b Packages Available<br>
</b></p>
<p>Apt-get sources listed at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html.</a></p>
<p><b>10/9/2002 - Shorewall 1.3.9b</b></p>
This release rolls up fixes
to the installer and to the firewall script.<br>
<p><b>10/6/2002 - Shorewall.net now running on RH8.0<br>
</b><br>
The firewall and server
here at shorewall.net are now running RedHat release
8.0.<br>
<b><br>
9/30/2002 - Shorewall
1.3.9a</b></p>
Roles up the fix for
broken tunnels.<br>
<p><b>9/30/2002 - TUNNELS Broken in 1.3.9!!!</b></p>
There is an updated firewall
script at <a
href="ftp://www.shorewall.net/pub/shorewall/errata/1.3.9/firewall"
target="_top">ftp://www.shorewall.net/pub/shorewall/errata/1.3.9/firewall</a>
-- copy that file to /usr/lib/shorewall/firewall.<br>
<p><b>9/28/2002 - Shorewall 1.3.9</b></p>
<p>In this version:<br>
</p>
<ul>
<li><a
href="configuration_file_basics.htm#dnsnames">DNS Names</a> are
now allowed in Shorewall config files (although I recommend against
using them).</li>
<li>The connection
SOURCE may now be qualified by both interface and
IP address in a <a href="Documentation.htm#Rules">Shorewall rule</a>.</li>
<li>Shorewall
startup is now disabled after initial installation
until the file /etc/shorewall/startup_disabled is removed.
This avoids nasty surprises during reboot for users who
install Shorewall but don't configure it.</li>
<li>The 'functions'
and 'version' files and the 'firewall' symbolic link
have been moved from /var/lib/shorewall to /usr/lib/shorewall
to appease the LFS police at Debian.<br>
</li>
</ul>
<p><b>9/23/2002 - Full Shorewall Site/Mailing List Archive Search Capability
Restored</b><br>
</p>
<img
src="images/j0233056.gif" alt="Brown Paper Bag" width="50" height="86"
align="left">
A couple of recent
configuration changes at www.shorewall.net broke
the Search facility:<br>
<blockquote>
<ol>
<li>Mailing
List Archive Search was not available.</li>
<li>The Site
Search index was incomplete</li>
<li>Only one
page of matches was presented.</li>
</ol>
</blockquote>
Hopefully these
problems are now corrected.
<p><b>9/23/2002 - Full Shorewall Site/Mailing List Archive Search Capability
Restored<br>
</b></p>
A couple of recent
configuration changes at www.shorewall.net had the
negative effect of breaking the Search facility:<br>
<ol>
<li>Mailing List
Archive Search was not available.</li>
<li>The Site
Search index was incomplete</li>
<li>Only one
page of matches was presented.</li>
</ol>
Hopefully these
problems are now corrected.<br>
<p><b>9/18/2002 - <20>Debian 1.3.8 Packages Available<br>
</b></p>
<p>Apt-get sources listed at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html.</a></p>
<p><b>9/16/2002 - Shorewall 1.3.8</b></p>
<p>In this version:<br>
</p>
<ul>
<li>A <a
href="Documentation.htm#Conf">NEWNOTSYN</a> option has been
added to shorewall.conf. This option determines whether Shorewall
accepts TCP packets which are not part of an established
connection and that are not 'SYN' packets (SYN flag
on and ACK flag off).</li>
<li>The need
for the 'multi' option to communicate between zones
za and zb on the same interface is removed in the case
where the chain 'za2zb' and/or 'zb2za' exists. 'za2zb' will
exist if:</li>
<ul>
<li>
There is a policy for za to zb; or </li>
<li>There
is at least one rule for za to zb.</li>
</ul>
</ul>
<ul>
<li>The /etc/shorewall/blacklist
file now contains three columns. In addition to
the SUBNET/ADDRESS column, there are optional PROTOCOL
and PORT columns to block only certain applications from
the blacklisted addresses.<br>
</li>
</ul>
<p><b>9/11/2002 - Debian 1.3.7c Packages Available</b></p>
<p>Apt-get sources listed at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</p>
<p><b>9/2/2002 - Shorewall 1.3.7c</b></p>
<p>This is a role up of a fix for "DNAT" rules where the source zone is $FW
(fw).</p>
<p><b>8/31/2002 - I'm not available</b></p>
<p>I'm currently on vacation<6F> -- please respect my need for a couple of
weeks free of Shorewall problem reports.</p>
<p>-Tom</p>
<p><b>8/26/2002 - Shorewall 1.3.7b</b></p>
<p>This is a role up of the "shorewall refresh" bug fix and the change which
reverses the order of "dhcp" and "norfc1918"
checking.</p>
<p><b>8/26/2002 - French FTP Mirror is Operational</b></p>
<p><a target="_blank"
href="ftp://france.shorewall.net/pub/mirrors/shorewall">ftp://france.shorewall.net/pub/mirrors/shorewall</a>
is now available.</p>
<p><b>8/25/2002 - Shorewall Mirror in France</b></p>
<p>Thanks to a Shorewall user in Paris, the Shorewall web site is now mirrored
at <a target="_top"
href="http://france.shorewall.net">http://france.shorewall.net</a>.</p>
<p><b>8/25/2002 - Shorewall 1.3.7a Debian Packages Available</b></p>
<p>Lorenzo Martignoni reports that the packages for version 1.3.7a are available
at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</p>
<p><b>8/22/2002 - Shorewall 1.3.7 Wins a Brown Paper Bag Award for its Author
-- Shorewall 1.3.7a released<img
border="0" src="images/j0233056.gif" width="50" height="80"
align="middle">
</b></p>
<p>1.3.7a corrects problems occurring in rules file processing when starting
Shorewall 1.3.7.</p>
<p><b>8/22/2002 - Shorewall 1.3.7 Released 8/13/2002</b></p>
<p>Features in this release include:</p>
<ul>
<li>The
'icmp.def' file is now empty! The rules in that file
were required in ipchains firewalls but are not required
in Shorewall. Users who have ALLOWRELATED=No in
<a href="Documentation.htm#Conf">shorewall.conf</a> should see
the <a href="errata.htm#Upgrade">Upgrade Issues</a>.</li>
<li>A 'FORWARDPING'
option has been added to <a
href="Documentation.htm#Conf"> shorewall.conf</a>. The effect
of setting this variable to Yes is the same as
the effect of adding an ACCEPT rule for ICMP echo-request
in <a href="shorewall_extension_scripts.htm">/etc/shorewall/icmpdef</a>.
Users who have such a rule in icmpdef are
encouraged to switch to FORWARDPING=Yes.</li>
<li>The
loopback CLASS A Network (127.0.0.0/8) has been added
to the rfc1918 file.</li>
<li>Shorewall
now works with iptables 1.2.7</li>
<li>The
documentation and web site no longer uses FrontPage
themes.</li>
</ul>
<p>I would like to thank John Distler for his valuable input regarding TCP
SYN and ICMP treatment in Shorewall. That
input has led to marked improvement in Shorewall
in the last two releases.</p>
<p><b>8/13/2002 - Documentation in the <a target="_top"
href="http://www.shorewall.net/cgi-bin/cvs/cvsweb.cgi">CVS Repository</a></b></p>
<p>The Shorewall-docs project now contains just the HTML and image files -
the Frontpage files have been removed.</p>
<p><b>8/7/2002 - <i>STABLE</i></b> <b>branch added to <a target="_top"
href="http://www.shorewall.net/cgi-bin/cvs/cvsweb.cgi">CVS Repository</a></b></p>
<p>This branch will only be updated after I release a new version of Shorewall
so you can always update from this branch
to get the latest stable tree.</p>
<p><b>8/7/2002 - <a href="errata.htm#Upgrade">Upgrade Issues</a> section added
to the <a href="errata.htm">Errata Page</a></b></p>
<p>Now there is one place to go to look for issues involved with upgrading
to recent versions of Shorewall.</p>
<p><b>8/7/2002 - Shorewall 1.3.6</b></p>
<p>This is primarily a bug-fix rollup with a couple of new features:</p>
<ul>
<li>The
latest <a href="shorewall_quickstart_guide.htm">QuickStart Guides
</a> including the <a href="shorewall_setup_guide.htm">Shorewall
Setup Guide.</a></li>
<li>Shorewall
will now DROP TCP packets that are not part of or
related to an existing connection and that are not SYN
packets. These "New not SYN" packets may be optionally
logged by setting the LOGNEWNOTSYN option in <a
href="Documentation.htm#Conf">/etc/shorewall/shorewall.conf</a>.</li>
<li>The
processing of "New not SYN" packets may be extended
by commands in the new <a
href="shorewall_extension_scripts.htm">newnotsyn extension script</a>.</li>
</ul>
<p><b>7/30/2002 - Shorewall 1.3.5b Released</b></p>
<p>This interim release:</p>
<ul>
<li>Causes
the firewall script to remove the lock file if it is
killed.</li>
<li>Once
again allows lists in the second column of the
<a href="Documentation.htm#Hosts">/etc/shorewall/hosts</a> file.</li>
<li>Includes
the latest <a href="shorewall_quickstart_guide.htm">QuickStart
Guides</a>.</li>
</ul>
<p><b>7/29/2002 - New Shorewall Setup Guide Available</b></p>
<p>The first draft of this guide is available at <a
href="http://www.shorewall.net/shorewall_setup_guide.htm"> http://www.shorewall.net/shorewall_setup_guide.htm</a>.
The guide is intended for use by people who
are setting up Shorewall to manage multiple public
IP addresses and by people who want to learn more about
Shorewall than is described in the single-address guides.
Feedback on the new guide is welcome.</p>
<p><b>7/28/2002 - Shorewall 1.3.5 Debian Package Available</b></p>
<p>Lorenzo Martignoni reports that the packages are version 1.3.5a and are
available at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</p>
<p><b>7/27/2002 - Shorewall 1.3.5a Released</b></p>
<p>This interim release restores correct handling of REDIRECT rules. </p>
<p><b>7/26/2002 - Shorewall 1.3.5 Released</b></p>
<p>This will be the last Shorewall release for a while. I'm going to be
focusing on rewriting a lot of the documentation.</p>
<p><b><EFBFBD></b>In this version:</p>
<ul>
<li>Empty
and invalid source and destination qualifiers are
now detected in the rules file. It is a good idea to
use the 'shorewall check' command before you issue
a 'shorewall restart' command be be sure that you don't have
any configuration problems that will prevent a successful
restart.</li>
<li>Added
<b>MERGE_HOSTS</b> variable in <a
href="Documentation.htm#Conf"> shorewall.conf</a> to provide
saner behavior of the /etc/shorewall/hosts
file.</li>
<li>The
time that the counters were last reset is now displayed
in the heading of the 'status' and 'show' commands.</li>
<li>A <b>proxyarp
</b>option has been added for entries in
<a href="Documentation.htm#Interfaces">/etc/shorewall/interfaces</a>.
This option facilitates Proxy ARP sub-netting as described
in the Proxy ARP subnetting mini-HOWTO (<a
href="http://www.tldp.org/HOWTO/mini/Proxy-ARP-Subnet/">http://www.tldp.org/HOWTO/mini/Proxy-ARP-Subnet/</a>).
Specifying the proxyarp option for an interface
causes Shorewall to set /proc/sys/net/ipv4/conf/&lt;interface&gt;/proxy_arp.</li>
<li>The
Samples have been updated to reflect the new capabilities
in this release. </li>
</ul>
<p><b>7/16/2002 - New Mirror in Argentina</b></p>
<p>Thanks to Arturo "Buanzo" Busleiman, there is now a Shorewall mirror in
Argentina. Thanks Buanzo!!!</p>
<p><b>7/16/2002 - Shorewall 1.3.4 Released</b></p>
<p>In this version:</p>
<ul>
<li>A new
<a href="Documentation.htm#Routestopped"> /etc/shorewall/routestopped</a>
file has been added. This file is intended to
eventually replace the <b>routestopped</b> option
in the /etc/shorewall/interface and /etc/shorewall/hosts
files. This new file makes remote firewall administration
easier by allowing any IP or subnet to be enabled while
Shorewall is stopped.</li>
<li>An /etc/shorewall/stopped
<a href="Documentation.htm#Scripts">extension script</a>
has been added. This script is invoked after Shorewall
has stopped.</li>
<li>A <b>DETECT_DNAT_ADDRS
</b>option has been added to <a
href="Documentation.htm#Conf">/etc/shoreall/shorewall.conf</a>.
When this option is selected, DNAT rules only apply when
the destination address is the external interface's
primary IP address.</li>
<li>The
<a href="shorewall_quickstart_guide.htm">QuickStart Guide</a>
has been broken into three guides and has been
almost entirely rewritten.</li>
<li>The
Samples have been updated to reflect the new capabilities
in this release. </li>
</ul>
<p><b>7/8/2002 - Shorewall 1.3.3 Debian Package Available</b></p>
<p>Lorenzo Marignoni reports that the packages are available at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</p>
<p><b>7/6/2002 - Shorewall 1.3.3 Released</b></p>
<p>In this version:</p>
<ul>
<li>Entries
in /etc/shorewall/interface that use the wildcard
character ("+") now have the "multi" option assumed.</li>
<li>The
'rfc1918' chain in the mangle table has been renamed
'man1918' to make log messages generated from that
chain distinguishable from those generated by the
'rfc1918' chain in the filter table.</li>
<li>Interface
names appearing in the hosts file are now validated
against the interfaces file.</li>
<li>The
TARGET column in the rfc1918 file is now checked for
correctness.</li>
<li>The
chain structure in the nat table has been changed
to reduce the number of rules that a packet must traverse
and to correct problems with NAT_BEFORE_RULES=No</li>
<li>The
"hits" command has been enhanced.</li>
</ul>
<p><b>6/25/2002 - Samples Updated for 1.3.2</b></p>
<p>The comments in the sample configuration files have been updated to reflect
new features introduced in Shorewall 1.3.2.</p>
<p><b>6/25/2002 - Shorewall 1.3.1 Debian Package Available</b></p>
<p>Lorenzo Marignoni reports that the package is available at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</p>
<p><b>6/19/2002 - Documentation Available in PDF Format</b></p>
<p>Thanks to Mike Martinez, the Shorewall Documentation is now available for
<a href="download.htm">download</a> in <a href="http://www.adobe.com">Adobe</a>
PDF format.</p>
<p><b>6/16/2002 - Shorewall 1.3.2 Released</b></p>
<p>In this version:</p>
<ul>
<li>A <a
href="Documentation.htm#Starting">logwatch command</a> has
been added to /sbin/shorewall.</li>
<li>A <a
href="blacklisting_support.htm">dynamic blacklist facility</a>
has been added.</li>
<li>Support
for the <a href="Documentation.htm#Conf">Netfilter multiport
match function</a> has been added.</li>
<li>The
files <b>firewall, functions </b>and <b>version</b>
have been moved from /etc/shorewall to /var/lib/shorewall.</li>
</ul>
<p><b>6/6/2002 - Why CVS Web access is Password Protected</b></p>
<p>Last weekend, I installed the CVS Web package to provide brower-based access
to the Shorewall CVS repository. Since then, I have had several instances
where my server was almost unusable due to the high load generated by website
copying tools like HTTrack and WebStripper. These mindless tools:</p>
<ul>
<li>Ignore
robot.txt files.</li>
<li>Recursively
copy everything that they find.</li>
<li>Should
be classified as weapons rather than tools.</li>
</ul>
<p>These tools/weapons are particularly damaging when combined with CVS Web
because they doggedly follow every link in
the cgi-generated HTML resulting in 1000s of executions
of the cvsweb.cgi script. Yesterday, I spend several
hours implementing measures to block these tools but unfortunately,
these measures resulted in my server OOM-ing under
even moderate load.</p>
<p>Until I have the time to understand the cause of the OOM (or until I buy
more RAM if that is what is required), CVS
Web access will remain Password Protected. </p>
<p><b>6/5/2002 - Shorewall 1.3.1 Debian Package Available</b></p>
<p>Lorenzo Marignoni reports that the package is available at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</p>
<p><b>6/2/2002 - Samples Corrected</b></p>
<p>The 1.3.0 samples configurations had several serious problems that prevented
DNS and SSH from working properly. These problems
have been corrected in the <a
href="/pub/shorewall/samples-1.3.1">1.3.1 samples.</a></p>
<p><b>6/1/2002 - Shorewall 1.3.1 Released</b></p>
<p>Hot on the heels of 1.3.0, this release:</p>
<ul>
<li>Corrects
a serious problem with "all <i>&lt;zone&gt;</i>
CONTINUE" policies. This problem is present in all versions
of Shorewall that support the CONTINUE policy. These
previous versions optimized away the "all2<i>&lt;zone&gt;</i>"
chain and replaced it with the "all2all" chain with the usual
result that a policy of REJECT was enforced rather than the intended
CONTINUE policy.</li>
<li>Adds
an <a href="Documentation.htm#rfc1918">/etc/shorewall/rfc1918</a>
file for defining the exact behavior of the<a
href="Documentation.htm#Interfaces"> 'norfc1918' interface option</a>.</li>
</ul>
<p><b>5/29/2002 - Shorewall 1.3.0 Released</b></p>
<p>In addition to the changes in Beta 1, Beta 2 and RC1, Shorewall 1.3.0
includes:</p>
<ul>
<li>A 'filterping'
interface option that allows ICMP echo-request (ping)
requests addressed to the firewall to be handled by
entries in /etc/shorewall/rules and /etc/shorewall/policy.</li>
</ul>
<p><b>5/23/2002 - Shorewall 1.3 RC1 Available</b></p>
<p>In addition to the changes in Beta 1 and Beta 2, RC1 (Version 1.2.92)
incorporates the following:</p>
<ul>
<li>Support
for the /etc/shorewall/whitelist file has been withdrawn.
If you need whitelisting, see <a
href="/1.3/whitelisting_under_shorewall.htm">these instructions</a>.</li>
</ul>
<p><b>5/19/2002 - Shorewall 1.3 Beta 2 Available</b></p>
<p>In addition to the changes in Beta 1, this release which carries the
designation 1.2.91 adds:</p>
<ul>
<li>The
structure of the firewall is changed markedly. There
is now an INPUT and a FORWARD chain for each interface;
this reduces the number of rules that a packet must
traverse, especially in complicated setups.</li>
<li><a
href="Documentation.htm#Exclude">Sub-zones may now be excluded
from DNAT and REDIRECT rules.</a></li>
<li>The
names of the columns in a number of the configuration
files have been changed to be more consistent
and self-explanatory and the documentation has been
updated accordingly.</li>
<li>The
sample configurations have been updated for 1.3.</li>
</ul>
<p><b>5/17/2002 - Shorewall 1.3 Beta 1 Available</b></p>
<p>Beta 1 carries the version designation 1.2.90 and implements the following
features:</p>
<ul>
<li>Simplified
rule syntax which makes the intent of each rule clearer
and hopefully makes Shorewall easier to learn.</li>
<li>Upward
compatibility with 1.2 configuration files has been
maintained so that current users can migrate to the
new syntax at their convenience.</li>
<li><b><font
color="#cc6666">WARNING:<3A> Compatibility with the old
parameterized sample configurations has NOT been maintained.
Users still running those configurations should migrate
to the new sample configurations before upgrading
to 1.3 Beta 1.</font></b></li>
</ul>
<p><b>5/4/2002 - Shorewall 1.2.13 is Available</b></p>
<p>In this version:</p>
<ul>
<li><a
href="Documentation.htm#Whitelist">White-listing</a> is supported.</li>
<li><a
href="Documentation.htm#Policy">SYN-flood protection </a>is
added.</li>
<li>IP addresses
added under <a href="Documentation.htm#Conf">ADD_IP_ALIASES
and ADD_SNAT_ALIASES</a> now inherit the VLSM
and Broadcast Address of the interface's primary
IP address.</li>
<li>The
order in which port forwarding DNAT and Static DNAT
<a href="Documentation.htm#Conf">can now be reversed</a>
so that port forwarding rules can override the contents
of <a href="Documentation.htm#NAT"> /etc/shorewall/nat</a>. </li>
</ul>
<p><b>4/30/2002 - Shorewall Debian News</b></p>
<p>Lorenzo Marignoni reports that Shorewall 1.2.12 is now in both the <a
href="http://packages.debian.org/testing/net/shorewall.html">Debian
Testing Branch</a> and the <a
href="http://packages.debian.org/unstable/net/shorewall.html">Debian
Unstable Branch</a>.</p>
<p><b>4/20/2002 - Shorewall 1.2.12 is Available</b></p>
<ul>
<li>The
'try' command works again</li>
<li>There
is now a single RPM that also works with SuSE.</li>
</ul>
<p><b>4/17/2002 - Shorewall Debian News</b></p>
<p>Lorenzo Marignoni reports that:</p>
<ul>
<li>Shorewall
1.2.10 is in the <a
href="http://packages.debian.org/testing/net/shorewall.html">Debian
Testing Branch</a></li>
<li>Shorewall
1.2.11 is in the <a
href="http://packages.debian.org/unstable/net/shorewall.html">Debian
Unstable Branch</a></li>
</ul>
<p>Thanks, Lorenzo!</p>
<p><b>4/16/2002 - Shorewall 1.2.11 RPM Available for SuSE</b></p>
<p>Thanks to <a href="mailto:s.mohr@familie-mohr.com">Stefan Mohr</a>, there
is now a Shorewall 1.2.11 <a
href="http://www.shorewall.net/pub/shorewall/shorewall-1.2-11.i686.suse73.rpm">
SuSE RPM</a> available. </p>
<p><b>4/13/2002 - Shorewall 1.2.11 Available </b></p>
<p>In this version:</p>
<ul>
<li>The
'try' command now accepts an optional timeout. If
the timeout is given in the command, the standard
configuration will automatically be restarted after
the new configuration has been running for that length of
time. This prevents a remote admin from being locked out
of the firewall in the case where the new configuration
starts but prevents access.</li>
<li>Kernel
route filtering may now be enabled globally using
the new ROUTE_FILTER parameter in <a
href="Documentation.htm#Conf"> /etc/shorewall/shorewall.conf</a>.</li>
<li>Individual
IP source addresses and/or subnets may now be excluded
from masquerading/SNAT.</li>
<li>Simple
"Yes/No" and "On/Off" values are now case-insensitive
in /etc/shorewall/shorewall.conf.</li>
</ul>
<p><b>4/13/2002 - Hamburg Mirror now has FTP </b></p>
<p>Stefan now has an FTP mirror at <a target="_blank"
href="ftp://germany.shorewall.net/pub/shorewall"> ftp://germany.shorewall.net/pub/shorewall</a>.<2E>
Thanks Stefan!</p>
<p><b>4/12/2002 - New Mirror in Hamburg</b></p>
<p>Thanks to <a href="mailto:s.mohr@familie-mohr.com">Stefan Mohr</a>, there
is now a mirror of the Shorewall website at
<a target="_top" href="http://germany.shorewall.net"> http://germany.shorewall.net</a>.
</p>
<p><b>4/10/2002 - Shorewall QuickStart Guide Version 1.1 Available</b></p>
<p><a href="shorewall_quickstart_guide.htm">Version 1.1 of the QuickStart
Guide</a> is now available. Thanks to those
who have read version 1.0 and offered their suggestions.
Corrections have also been made to the sample scripts.</p>
<p><b>4/9/2002 - Shorewall QuickStart Guide Version 1.0 Available</b></p>
<p><a href="shorewall_quickstart_guide.htm">Version 1.0 of the QuickStart
Guide</a> is now available. This Guide and
its accompanying sample configurations are expected
to provide a replacement for the recently withdrawn parameterized
samples. </p>
<p><b>4/8/2002 - Parameterized Samples Withdrawn </b></p>
<p>Although the <a
href="http://www.shorewall.net/pub/shorewall/samples-1.2.1/">parameterized
samples</a> have allowed people to get a firewall
up and running quickly, they have unfortunately
set the wrong level of expectation among those who
have used them. I am therefore withdrawing support for the
samples and I am recommending that they not be used in new
Shorewall installations.</p>
<p><b>4/2/2002 - Updated Log Parser</b></p>
<p><a href="mailto:JML@redwoodtech.com">John Lodge</a> has provided an updated
version of his <a
href="pub/shorewall/parsefw/">CGI-based log parser</a>
with corrected date handling. </p>
<p><b>3/30/2002 - Shorewall Website Search Improvements</b></p>
<p>The quick search on the home page now excludes the mailing list archives.
The <a href="htdig/search.html">Extended Search</a>
allows excluding the archives or restricting
the search to just the archives. An archive search
form is also available on the <a
href="http://lists.shorewall.net/mailing_list.htm">mailing list information
page</a>.</p>
<p><b>3/28/2002 - Debian Shorewall News (From Lorenzo Martignoni)</b></p>
<ul>
<li>The
1.2.10 Debian Package is available at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</li>
<li>Shorewall
1.2.9 is now in the <a
href="http://packages.debian.org/unstable/net/shorewall.html">Debian
Unstable Distribution</a>.</li>
</ul>
<p><b>3/25/2002 - Log Parser Available</b></p>
<p><a href="mailto:JML@redwoodtech.com">John Lodge</a> has provided a <a
href="pub/shorewall/parsefw/">CGI-based log parser</a> for Shorewall. Thanks
John.</p>
<p><b>3/20/2002 - Shorewall 1.2.10 Released</b></p>
<p>In this version:</p>
<ul>
<li>A "shorewall
try" command has been added (syntax: shorewall try
<i> &lt;configuration directory&gt;</i>). This
command attempts "shorewall -c <i> &lt;configuration
directory&gt;</i> start" and if that results in the firewall
being stopped due to an error, a "shorewall start" command
is executed. The 'try' command allows you to create a new
<a href="Documentation.htm#Configs"> configuration</a> and attempt
to start it; if there is an error that leaves your firewall
in the stopped state, it will automatically be restarted using
the default configuration (in /etc/shorewall).</li>
<li>A new
variable ADD_SNAT_ALIASES has been added to <a
href="Documentation.htm#Conf">/etc/shorewall/shorewall.conf</a>.
If this variable is set to "Yes", Shorewall will
automatically add IP addresses listed in the third
column of the <a href="Documentation.htm#Masq"> /etc/shorewall/masq</a>
file.</li>
<li>Copyright
notices have been added to the documenation.</li>
</ul>
<p><b>3/11/2002 - Shorewall 1.2.9 Released</b></p>
<p>In this version:</p>
<ul>
<li>Filtering
by <a href="Documentation.htm#MAC">MAC address</a> has
been added. MAC addresses may be used as the source address in:
<ul>
<li>Filtering
rules (<a href="Documentation.htm#Rules">/etc/shorewall/rules</a>)</li>
<li>Traffic
Control Classification Rules (<a
href="traffic_shaping.htm#tcrules">/etc/shorewall/tcrules</a>)</li>
<li>TOS
Rules (<a href="Documentation.htm#TOS">/etc/shorewall/tos</a>)</li>
<li>Blacklist
(<a href="Documentation.htm#Blacklist">/etc/shorewall/blacklist</a>)</li>
</ul>
</li>
<li>Several
bugs have been fixed</li>
<li>The
1.2.9 Debian Package is also available at <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a>.</li>
</ul>
<p><b>3/1/2002 - 1.2.8 Debian Package is Available</b></p>
<p>See <a href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a></p>
<p><b>2/25/2002 - New Two-interface Sample</b></p>
<p>I've enhanced the two interface sample to allow access from the firewall
to servers in the local zone - <a
href="http://www.shorewall.net/pub/shorewall/LATEST.samples/two-interfaces.tgz">
http://www.shorewall.net/pub/shorewall/LATEST.samples/two-interfaces.tgz</a></p>
<p><b>2/23/2002 - Shorewall 1.2.8 Released</b></p>
<p>Do to a serious problem with 1.2.7, I am releasing 1.2.8. It corrects
problems associated with the lock file used to prevent multiple state-changing
operations from occuring simultaneously. My
apologies for any inconvenience my carelessness
may have caused.</p>
<p><b>2/22/2002 - Shorewall 1.2.7 Released</b></p>
<p>In this version:</p>
<ul>
<li>UPnP
probes (UDP destination port 1900) are now silently
dropped in the <i>common</i> chain</li>
<li>RFC
1918 checking in the mangle table has been streamlined
to no longer require packet marking. RFC 1918 checking
in the filter table has been changed to require half as
many rules as previously.</li>
<li>A 'shorewall
check' command has been added that does a cursory
validation of the zones, interfaces, hosts, rules and
policy files.</li>
</ul>
<p><b>2/18/2002 - 1.2.6 Debian Package is Available</b></p>
<p>See <a href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a></p>
<p><b>2/8/2002 - Shorewall 1.2.6 Released</b></p>
<p>In this version:</p>
<ul>
<li>$-variables
may now be used anywhere in the configuration files
except /etc/shorewall/zones.</li>
<li>The
interfaces and hosts files now have their contents
validated before any changes are made to the existing
Netfilter configuration. The appearance of a zone
name that isn't defined in /etc/shorewall/zones causes "shorewall
start" and "shorewall restart" to abort without changing
the Shorewall state. Unknown options in either file cause
a warning to be issued.</li>
<li>A problem
occurring when BLACKLIST_LOGLEVEL was not set has
been corrected.</li>
</ul>
<p><b>2/4/2002 - Shorewall 1.2.5 Debian Package Available</b></p>
<p>see <a href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a></p>
<p><b>2/1/2002 - Shorewall 1.2.5 Released</b></p>
<p>Due to installation problems with Shorewall 1.2.4, I have released Shorewall
1.2.5. Sorry for the rapid-fire development.</p>
<p>In version 1.2.5:</p>
<ul>
<li>The installation
problems have been corrected.</li>
<li><a
href="Documentation.htm#Masq">SNAT</a> is now supported.</li>
<li>A "shorewall
version" command has been added</li>
<li>The default
value of the STATEDIR variable in /etc/shorewall/shorewall.conf
has been changed to /var/lib/shorewall in order
to conform to the GNU/Linux File Hierarchy Standard,
Version 2.2.</li>
</ul>
<p><b>1/28/2002 - Shorewall 1.2.4 Released</b></p>
<ul>
<li>The "fw"
zone <a href="Documentation.htm#FW">may now be given a
different name</a>.</li>
<li>You may
now place end-of-line comments (preceded by '#') in
any of the configuration files</li>
<li>There
is now protection against against two state changing
operations occuring concurrently. This is implemented
using the 'lockfile' utility if it is available
(lockfile is part of procmail); otherwise, a less robust
technique is used. The lockfile is created in the STATEDIR
defined in /etc/shorewall/shorewall.conf and has the
name "lock".</li>
<li>"shorewall
start" no longer fails if "detect" is specified
in <a href="Documentation.htm#Interfaces">/etc/shorewall/interfaces</a>
for an interface with subnet mask 255.255.255.255.</li>
</ul>
<p><b>1/27/2002 - Shorewall 1.2.3 Debian Package Available </b>-- see <a
href="http://security.dsi.unimi.it/%7Elorenzo/debian.html">http://security.dsi.unimi.it/~lorenzo/debian.html</a></p>
<p><b>1/20/2002 - Corrected firewall script available<6C></b></p>
<p>Corrects a problem with BLACKLIST_LOGLEVEL. See <a href="errata.htm">the
errata</a> for details.</p>
<p><b>1/19/2002 - Shorewall 1.2.3 Released</b></p>
<p>This is a minor feature and bugfix release. The single new feature is:</p>
<ul>
<li>Support
for TCP MSS Clamp to PMTU -- This support is usually
required when the internet connection is via PPPoE
or PPTP and may be enabled using the <a
href="Documentation.htm#ClampMSS">CLAMPMSS</a> option in /etc/shorewall/shorewall.conf.</li>
</ul>
<p>The following problems were corrected:</p>
<ul>
<li>The "shorewall
status" command no longer hangs.</li>
<li>The "shorewall
monitor" command now displays the icmpdef chain</li>
<li>The CLIENT
PORT(S) column in tcrules is no longer ignored</li>
</ul>
<p><b>1/18/2002 - Shorewall 1.2.2 packaged with new </b><a
href="http://leaf.sourceforge.net">LEAF</a><b> release</b></p>
<p>Jacques Nilo and Eric Wolzak have released a kernel 2.4.16 LEAF distribution
that includes Shorewall 1.2.2. See <a
href="http://leaf.sourceforge.net/devel/jnilo">http://leaf.sourceforge.net/devel/jnilo</a>
for details.</p>
<p><b>1/11/2002 - Debian Package (.deb) Now Available - </b>Thanks to <a
href="mailto:lorenzo.martignoni@milug.org">Lorenzo Martignoni</a>, a 1.2.2
Shorewall Debian package is now available. There
is a link to Lorenzo's site from the <a
href="download.htm">Shorewall download page</a>.</p>
<p><b>1/9/2002 - Updated 1.2.2 /sbin/shorewall available - </b><a
href="/pub/shorewall/errata/1.2.2/shorewall">This corrected version </a>restores
the "shorewall status" command to health.</p>
<p><b>1/8/2002 - Shorewall 1.2.2 Released</b></p>
<p>In version 1.2.2</p>
<ul>
<li>Support
for IP blacklisting has been added
<ul>
<li>You
specify whether you want packets from blacklisted
hosts dropped or rejected using the <a
href="Documentation.htm#BLDisposition">BLACKLIST_DISPOSITION
</a>setting in /etc/shorewall/shorewall.conf</li>
<li>You
specify whether you want packets from blacklisted
hosts logged and at what syslog level using the
<a href="Documentation.htm#BLLoglevel">BLACKLIST_LOGLEVEL</a>
setting in /etc/shorewall/shorewall.conf</li>
<li>You
list the IP addresses/subnets that you wish to blacklist
in <a href="Documentation.htm#Blacklist">/etc/shorewall/blacklist</a></li>
<li>You
specify the interfaces you want checked against the
blacklist using the new "<a
href="Documentation.htm#BLInterface">blacklist</a>" option
in /etc/shorewall/interfaces.</li>
<li>The
black list is refreshed from /etc/shorewall/blacklist
by the "shorewall refresh" command.</li>
</ul>
</li>
<li>Use of
TCP RST replies has been expanded<65>
<ul>
<li>TCP
connection requests rejected because of a REJECT policy
are now replied with a TCP RST packet.</li>
<li>TCP
connection requests rejected because of a protocol=all
rule in /etc/shorewall/rules are now replied
with a TCP RST packet.</li>
</ul>
</li>
<li>A <a
href="Documentation.htm#Logfile">LOGFILE</a> specification
has been added to /etc/shorewall/shorewall.conf. LOGFILE is
used to tell the /sbin/shorewall program where to look for
Shorewall messages.</li>
</ul>
<p><b>1/5/2002 - New Parameterized Samples (<a
href="ftp://ftp.shorewall.net/pub/shorewall/samples-1.2.0/"
target="_blank">version 1.2.0</a>) released. </b>These are minor updates
to the previously-released samples. There are
two new rules added:</p>
<ul>
<li>Unless
you have explicitly enabled Auth connections (tcp
port 113) to your firewall, these connections will be
REJECTED rather than DROPPED. This speeds up connection
establishment to some servers.</li>
<li>Orphan
DNS replies are now silently dropped.</li>
</ul>
<p>See the README file for upgrade instructions.</p>
<p><b>1/1/2002 - <u><font color="#ff6633">Shorewall Mailing List Moving</font></u></b></p>
<p>The Shorewall mailing list hosted at <a href="http://sourceforge.net">
Sourceforge</a> is moving to Shorewall.net.
If you are a current subscriber to the list at Sourceforge,
please <a href="shorewall_mailing_list_migration.htm">see these instructions</a>.
If you would like to subscribe to the new list,
visit <a
href="http://www.shorewall.net/mailman/listinfo/shorewall-users">http://www.shorewall.net/mailman/listinfo/shorewall-users</a>.</p>
<p><b>12/31/2001 - Shorewall 1.2.1 Released</b></p>
<p>In version 1.2.1:</p>
<ul>
<li><a
href="Documentation.htm#LogUncleanOption">Logging of Mangled/Invalid
Packets</a> is added.<2E></li>
<li>The <a
href="IPIP.htm">tunnel script</a> has been corrected.</li>
<li>'shorewall
show tc' now correctly handles tunnels.</li>
</ul>
<p><b>12/21/2001 - Shorewall 1.2.0 Released!</b> - <b>I couldn't resist releasing
1.2 on 12/21/2001</b></p>
<p>Version 1.2 contains the following new features:</p>
<ul>
<li>Support
for <a href="traffic_shaping.htm">Traffic Control/Shaping</a></li>
<li>Support
for <a href="Documentation.htm#Unclean">Filtering of Mangled/Invalid
Packets</a></li>
<li>Support
for <a href="IPIP.htm">GRE Tunnels</a></li>
</ul>
<p>For the next month or so, I will continue to provide corrections to version
1.1.18 as necessary so that current version
1.1.x users will not be forced into a quick upgrade
to 1.2.0 just to have access to bug fixes.</p>
<p>For those of you who have installed one of the Beta RPMS, you will need
to use the "--oldpackage" option when upgrading
to 1.2.0:</p>
<blockquote>
<p>rpm -Uvh --oldpackage shorewall-1.2-0.noarch.rpm</p>
</blockquote>
<p><b>12/19/2001 - Thanks to <a href="mailto:scowles@infohiiway.com">Steve
Cowles</a>, there is now a Shorewall mirror
in Texas. </b>This web site is mirrored at <a
href="http://www.infohiiway.com/shorewall" target="_top">http://www.infohiiway.com/shorewall</a>
and the ftp site is at <a
href="ftp://ftp.infohiiway.com/pub/mirrors/shorewall">ftp://ftp.infohiiway.com/pub/mirrors/shorewall</a>.<b><EFBFBD></b></p>
<p><b>11/30/2001 - A new set of the parameterized <a
href="ftp://ftp.shorewall.net/pub/shorewall/samples-1.1.18">Sample
Configurations</a> has been released</b>. In this version:</p>
<ul>
<li>Ping
is now allowed between the zones.</li>
<li>In the
three-interface configuration, it is now possible
to configure the internet services that are to be available
to servers in the DMZ.<2E></li>
</ul>
<p><b>11/20/2001 - The current version of Shorewall is 1.1.18.<2E></b></p>
<p>In this version:</p>
<ul>
<li>The spelling
of ADD_IP_ALIASES has been corrected in the shorewall.conf
file</li>
<li>The logic
for deleting user-defined chains has been simplified
so that it avoids a bug in the LRP version of the 'cut'
utility.</li>
<li>The /var/lib/lrpkg/shorwall.conf
file has been corrected to properly display
the NAT entry in that file.</li>
</ul>
<p><b>11/19/2001 - Thanks to <a href="mailto:shorewall@timelord.sk">Juraj
Ontkanin</a>, there is now a Shorewall
mirror in the Slovak Republic</b>. The website is
now mirrored at <a href="http://www.nrg.sk/mirror/shorewall"
target="_top">http://www.nrg.sk/mirror/shorewall</a>
and the FTP site is mirrored at <a
href="ftp://ftp.nrg.sk/mirror/shorewall">ftp://ftp.nrg.sk/mirror/shorewall</a>.</p>
<p><b>11/2/2001 - Announcing Shorewall Parameter-driven Sample Configurations.</b>
There are three sample configurations:</p>
<ul>
<li>One Interface
-- for a standalone system.</li>
<li>Two Interfaces
-- A masquerading firewall.</li>
<li>Three
Interfaces -- A masquerading firewall with DMZ.</li>
</ul>
<p>Samples may be downloaded from <a
href="ftp://ftp.shorewall.net/pub/shorewall/samples-1.1.17"> ftp://ftp.shorewall.net/pub/shorewall/samples-1.1.17</a>
. See the README file for instructions.</p>
<p><b>11/1/2001 - The current version of Shorewall is 1.1.17</b>.<2E> I intend
this to be the last of the 1.1 Shorewall
releases.</p>
<p> In this version:</p>
<ul>
<li>The handling
of <a href="Documentation.htm#Aliases">ADD_IP_ALIASES</a>
has been corrected.<2E></li>
</ul>
<p><b>10/22/2001 - The current version of Shorewall is 1.1.16</b>. In this
version:</p>
<ul>
<li>A new
"shorewall show connections" command has been added.</li>
<li>In the
"shorewall monitor" output, the currently tracked
connections are now shown on a separate page.</li>
<li>Prior
to this release, Shorewall unconditionally added the
external IP adddress(es) specified in /etc/shorewall/nat.
Beginning with version 1.1.16, a new parameter
(<a href="Documentation.htm#Aliases">ADD_IP_ALIASES</a>) may
be set to "no" (or "No") to inhibit this behavior.
This allows IP aliases created using your distribution's
network configuration tools to be used in static
NAT.<2E></li>
</ul>
<p><b>10/15/2001 - The current version of Shorewall is 1.1.15.</b> In this
version:</p>
<ul>
<li>Support
for nested zones has been improved. See <a
href="Documentation.htm#Nested"> the documentation</a> for
details</li>
<li>Shorewall
now correctly checks the alternate configuration
directory for the 'zones' file.</li>
</ul>
<p><b>10/4/2001 - The current version of Shorewall is 1.1.14.</b> In this
version</p>
<ul>
<li>Shorewall
now supports alternate configuration directories.
When an alternate directory is specified when starting
or restarting Shorewall (e.g., "shorewall -c /etc/testconf
restart"), Shorewall will first look for configuration files
in the alternate directory then in /etc/shorewall. To
create an alternate configuration simply:<br>
1. Create
a New Directory<br>
2. Copy
to that directory any of your configuration files that
you want to change.<br>
3. Modify
the copied files as needed.<br>
4. Restart
Shorewall specifying the new directory.</li>
<li>The rules
for allowing/disallowing icmp echo-requests (pings)
are now moved after rules created when processing the
rules file. This allows you to add rules that selectively
allow/deny ping based on source or destination address.</li>
<li>Rules
that specify multiple client ip addresses or subnets
no longer cause startup failures.</li>
<li>Zone
names in the policy file are now validated against
the zones file.</li>
<li>If you
have <a href="Documentation.htm#MangleEnabled">packet mangling</a>
support enabled, the "<a
href="Documentation.htm#Interfaces">norfc1918</a>" interface
option now logs and drops any incoming packets on the interface
that have an RFC 1918 destination address.</li>
</ul>
<p><b>9/12/2001 - The current version of Shorewall is 1.1.13</b>. In this
version</p>
<ul>
<li>Shell
variables can now be used to parameterize Shorewall
rules.</li>
<li>The second
column in the hosts file may now contain a comma-separated
list.<br>
<br>
Example:<br>
<20><><EFBFBD> sea<65><61><EFBFBD>
eth0:130.252.100.0/24,206.191.149.0/24</li>
<li>Handling
of multi-zone interfaces has been improved. See the
<a href="Documentation.htm#Interfaces">documentation for the
/etc/shorewall/interfaces file</a>.</li>
</ul>
<p><b>8/28/2001 - The current version of Shorewall is 1.1.12</b>. In this
version</p>
<ul>
<li>Several
columns in the rules file may now contain comma-separated
lists.</li>
<li>Shorewall
is now more rigorous in parsing the options in
/etc/shorewall/interfaces.</li>
<li>Complementation
using "!" is now supported in rules.</li>
</ul>
<p><b>7/28/2001 - The current version of Shorewall is 1.1.11</b>. In this
version</p>
<ul>
<li>A "shorewall
refresh" command has been added to allow for
refreshing the rules associated with the broadcast address
on a dynamic interface. This command should be used
in place of "shorewall restart" when the internet interface's
IP address changes.</li>
<li>The /etc/shorewall/start
file (if any) is now processed after all
temporary rules have been deleted. This change prevents
the accidental removal of rules added during
the processing of that file.</li>
<li>The "dhcp"
interface option is now applicable to firewall
interfaces used by a DHCP server running on the firewall.</li>
<li>The RPM
can now be built from the .tgz file using "rpm -tb"<22></li>
</ul>
<p><b>7/6/2001 - The current version of Shorewall is 1.1.10.</b> In this version</p>
<ul>
<li>Shorewall
now enables Ipv4 Packet Forwarding by default. Packet
forwarding may be disabled by specifying IP_FORWARD=Off
in /etc/shorewall/shorewall.conf. If you don't
want Shorewall to enable or disable packet forwarding,
add IP_FORWARDING=Keep to your /etc/shorewall/shorewall.conf
file.</li>
<li>The "shorewall
hits" command no longer lists extraneous service
names in its last report.</li>
<li>Erroneous
instructions in the comments at the head of the firewall
script have been corrected.</li>
</ul>
<p><b>6/23/2001 - The current version of Shorewall is 1.1.9.</b> In this version</p>
<ul>
<li>The "tunnels"
file <u>really</u> is in the RPM now.</li>
<li>SNAT
can now be applied to port-forwarded connections.</li>
<li>A bug
which would cause firewall start failures in some dhcp
configurations has been fixed.</li>
<li>The firewall
script now issues a message if you have the name
of an interface in the second column in an entry in
/etc/shorewall/masq and that interface is not up.</li>
<li>You can
now configure Shorewall so that it<a
href="Documentation.htm#NatEnabled"> doesn't require the NAT and/or
mangle netfilter modules</a>.</li>
<li>Thanks
to Alex<65> Polishchuk, the "hits" command from seawall
is now in shorewall.</li>
<li>Support
for <a href="IPIP.htm">IPIP tunnels</a> has been added.</li>
</ul>
<p><b>6/18/2001 - The current version of Shorewall is 1.1.8</b>. In this version</p>
<ul>
<li>A typo
in the sample rules file has been corrected.</li>
<li>It is
now possible to restrict masquerading by<a
href="Documentation.htm#Masq"> destination host or subnet.</a></li>
<li>It is
now possible to have static <a
href="NAT.htm#LocalPackets">NAT rules applied to packets originating
on the firewall itself</a>.</li>
</ul>
<p><b>6/2/2001 - The current version of Shorewall is 1.1.7.</b> In this version</p>
<ul>
<li>The TOS
rules are now deleted when the firewall is stopped.</li>
<li>The .rpm
will now install regardless of which version of iptables
is installed.</li>
<li>The .rpm
will now install without iproute2 being installed.</li>
<li>The documentation
has been cleaned up.</li>
<li>The sample
configuration files included in Shorewall have been
formatted to 80 columns for ease of editing on a VGA
console.</li>
</ul>
<p><b>5/25/2001 - The current version of Shorewall is 1.1.6</b>. In this version</p>
<ul>
<li><a
href="Documentation.htm#lograte">You may now rate-limit the
packet log.</a></li>
<li> Previous
versions of Shorewall have an implementation of Static
NAT which violates the principle of least surprise.<2E>
NAT only occurs for packets arriving at (DNAT) or send
from (SNAT) the interface named in the INTERFACE column of
/etc/shorewall/nat. Beginning with version 1.1.6, NAT effective
regardless of which interface packets come from or are destined
to. To get compatibility with prior versions, I have added
a new "ALL <a href="NAT.htm#AllInterFaces">"ALL INTERFACES"<22>
column to /etc/shorewall/nat</a>. By placing "no" or "No"
in the new column, the NAT behavior of prior versions may
be retained.<2E></li>
<li>The treatment
of <a href="IPSEC.htm#RoadWarrior">IPSEC Tunnels where the
remote gateway is a standalone system has been improved</a>.
Previously, it was necessary to include an additional rule allowing
UDP port 500 traffic to pass through the tunnel. Shorewall
will now create this rule automatically when you place the name
of the remote peer's zone in a new GATEWAY ZONE column in /etc/shorewall/tunnels.<2E></li>
</ul>
<p><b>5/20/2001 - The current version of Shorewall is 1.1.5.</b> In this version</p>
<ul>
<li><a
href="Documentation.htm#modules">You may now pass parameters
when loading netfilter modules and you can specify the modules
to load.</a></li>
<li>Compressed
modules are now loaded. This requires that you modutils
support loading compressed modules.</li>
<li><a
href="Documentation.htm#TOS">You may now set the Type of Service
(TOS) field in packets.</a></li>
<li>Corrected
rules generated for port redirection (again).</li>
</ul>
<p><b>5/10/2001 - The current version of Shorewall is 1.1.4.</b> In this version</p>
<ul>
<li> <a
href="Documentation.htm#Conf">Accepting RELATED connections
is now optional.</a></li>
<li>Corrected
problem where if "shorewall start" aborted early
(due to kernel configuration errors for example), superfluous
'sed' error messages were reported.</li>
<li>Corrected
rules generated for port redirection.</li>
<li>The order
in which iptables kernel modules are loaded has been
corrected (Thanks to Mark Pavlidis).<2E></li>
</ul>
<p><b>4/28/2001 - The current version of Shorewall is 1.1.3.</b> In this version</p>
<ul>
<li>Correct
message issued when Proxy ARP address added (Thanks
to Jason Kirtland).</li>
<li>/tmp/shorewallpolicy-$$
is now removed if there is an error while starting
the firewall.</li>
<li>/etc/shorewall/icmp.def
and /etc/shorewall/common.def are now used
to define the icmpdef and common chains unless overridden
by the presence of /etc/shorewall/icmpdef or /etc/shorewall/common.</li>
<li>In the
.lrp, the file /var/lib/lrpkg/shorwall.conf has been
corrected. An extra space after "/etc/shorwall/policy"
has been removed and "/etc/shorwall/rules" has been added.</li>
<li>When
a sub-shell encounters a fatal error and has stopped
the firewall, it now kills the main shell so that
the main shell will not continue.</li>
<li>A problem
has been corrected where a sub-shell stopped the
firewall and main shell continued resulting in a perplexing
error message referring to "common.so" resulted.</li>
<li>Previously,
placing "-" in the PORT(S) column in /etc/shorewall/rules
resulted in an error message during start. This has
been corrected.</li>
<li>The first
line of "install.sh" has been corrected -- I had
inadvertently deleted the initial "#".</li>
</ul>
<p><b>4/12/2001 - The current version of Shorewall is 1.1.2.</b> In this version</p>
<ul>
<li>Port
redirection now works again.</li>
<li>The icmpdef
and common chains <a href="Documentation.htm#Icmpdef">may
now be user-defined</a>.</li>
<li>The firewall
no longer fails to start if "routefilter" is
specified for an interface that isn't started. A warning
message is now issued in this case.</li>
<li>The LRP
Version is renamed "shorwall" for 8,3 MSDOS file
system compatibility.</li>
<li>A couple
of LRP-specific problems were corrected.</li>
</ul>
<p><b>4/8/2001 - Shorewall is now affiliated with the <a
href="http://leaf.sourceforge.net">Leaf Project</a> </b> <a
href="http://leaf.sourceforge.net"> <img border="0"
src="images/leaflogo.gif" width="49" height="36">
</a></p>
<p><b>4/5/2001 - The current version of Shorewall is 1.1.1. In this version:</b></p>
<ul>
<li>The common
chain is traversed from INPUT, OUTPUT and FORWARD
before logging occurs</li>
<li>The source
has been cleaned up dramatically</li>
<li>DHCP
DISCOVER packets with RFC1918 source addresses no
longer generate log messages. Linux DHCP clients generate
such packets and it's annoying to see them logged.<2E></li>
</ul>
<p><b>3/25/2001 - The current version of Shorewall is 1.1.0. In this version:</b></p>
<ul>
<li>Log messages
now indicate the packet disposition.</li>
<li>Error
messages have been improved.</li>
<li>The ability
to define zones consisting of an enumerated set of
hosts and/or subnetworks has been added.</li>
<li>The zone-to-zone
chain matrix is now sparse so that only those chains
that contain meaningful rules are defined.</li>
<li>240.0.0.0/4
and 169.254.0.0/16 have been added to the source
subnetworks whose packets are dropped under the <i>norfc1918</i>
interface option.</li>
<li>Exits
are now provided for executing an user-defined script
when a chain is defined, when the firewall is initialized,
when the firewall is started, when the firewall
is stopped and when the firewall is cleared.</li>
<li>The Linux
kernel's route filtering facility can now be specified
selectively on network interfaces.</li>
</ul>
<p><b>3/19/2001 - The current version of Shorewall is 1.0.4. This version:</b></p>
<ul>
<li>Allows
user-defined zones. Shorewall now has only one pre-defined
zone (fw) with the remaining zones being defined
in the new configuration file /etc/shorewall/zones.
The /etc/shorewall/zones file released in this version
provides behavior that is compatible with Shorewall 1.0.3.<2E></li>
<li>Adds
the ability to specify logging in entries in the
/etc/shorewall/rules file.</li>
<li>Correct
handling of the icmp-def chain so that only ICMP packets
are sent through the chain.</li>
<li>Compresses
the output of "shorewall monitor" if awk is installed.
Allows the command to work if awk isn't installed (although
it's not pretty).</li>
</ul>
<p><b>3/13/2001 - The current version of Shorewall is 1.0.3. This is a bug-fix
release with no new features.</b></p>
<ul>
<li>The PATH
variable in the firewall script now includes /usr/local/bin
and /usr/local/sbin.</li>
<li>DMZ-related
chains are now correctly deleted if the DMZ is deleted.</li>
<li>The interface
OPTIONS for "gw" interfaces are no longer ignored.</li>
</ul>
<p><b>3/8/2001 - The current version of Shorewall is 1.0.2. It supports an
additional "gw" (gateway) zone for tunnels
and it supports IPSEC tunnels with end-points on
the firewall. There is also a .lrp available now.</b></p>
<p><font size="2">Updated 5/19/2003 - <a href="support.htm">Tom Eastep</a>
</font></p>
<p><a href="copyright.htm"><font size="2"> Copyright</font> <20> <font
size="2">2001, 2002 Thomas M. Eastep.</font></a><br>
</p>
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