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<h1 align="center"><font color="#ffffff">Shorewall News Archive</font></h1>
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<p><b>3/24/2003 - Shorewall 1.4.1</b><b></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 3/21/2003 - <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>
<br>
<br>
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