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<title>Shoreline Firewall (Shorewall) 1.4</title> <title>Shoreline Firewall (Shorewall) 1.4</title>
<base target="_self"> <base target="_self">
</head> </head>
<body> <body>
<div align="center"> <div align="center">
<div align="center"> </div>
<center> <center>
<div align="center"> </div> <table border="0" cellpadding="0" cellspacing="0" style=
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id="AutoNumber4">
<tbody> <tbody>
<tr> <tr>
<td width="90%"> <td width="90%">
<h2>Site Problem</h2> <h2>Site Problem</h2>
The server that normally hosts www.shorewall.net and ftp.shorewall.net
is currently down. Until it is back up, a small server with very The server that normally hosts www.shorewall.net and
limited bandwidth is being used temporarly. You will likely experience ftp.shorewall.net is currently down. Until it is back up, a small
better response time from the <a server with very limited bandwidth is being used temporarly. You
href="http://shorewall.sourceforge.net" target="_top">Sourceforge site</a> will likely experience better response time from the <a href=
or from one of the other <a href="shorewall_mirrors.htm">mirrors</a>. "http://shorewall.sourceforge.net" target="_top">Sourceforge
Sorry for the inconvenience.<br> site</a> or from one of the other <a href=
"shorewall_mirrors.htm">mirrors</a>. Sorry for the
inconvenience.<br>
<br> <br>
<h2>Introduction to Shorewall<br> <h2>Introduction to Shorewall<br>
</h2> </h2>
<h3>This is the Shorewall 1.4 Web Site</h3> <h3>This is the Shorewall 1.4 Web Site</h3>
The information on this site applies only to 1.4.x releases of The information on this site applies only to 1.4.x releases of
Shorewall. For older versions:<br> Shorewall. For older versions:<br>
<ul> <ul>
<li>The 1.3 site is <a href="http://www.shorewall.net/1.3" <li>The 1.3 site is <a href="http://www.shorewall.net/1.3" target=
target="_top">here.</a></li> "_top">here.</a></li>
<li>The 1.2 site is <a href="http://shorewall.net/1.2/"
target="_top">here</a>.</li> <li>The 1.2 site is <a href="http://shorewall.net/1.2/" target=
"_top">here</a>.</li>
</ul> </ul>
<h3>Glossary<br> <h3>Glossary<br>
</h3> </h3>
<ul> <ul>
<li><a href="http://www.netfilter.org">Netfilter</a> - the <li><a href="http://www.netfilter.org">Netfilter</a> - the packet
packet filter facility built into the 2.4 and later Linux kernels.</li> filter facility built into the 2.4 and later Linux kernels.</li>
<li>ipchains - the packet filter facility built into the 2.2
Linux kernels. Also the name of the utility program used to configure <li>ipchains - the packet filter facility built into the 2.2 Linux
and control that facility. Netfilter can be used in ipchains kernels. Also the name of the utility program used to configure and
control that facility. Netfilter can be used in ipchains
compatibility mode.<br> compatibility mode.<br>
</li> </li>
<li>iptables - the utility program used to configure and
control Netfilter. The term 'iptables' is often used to refer to the <li>iptables - the utility program used to configure and control
Netfilter. The term 'iptables' is often used to refer to the
combination of iptables+Netfilter (with Netfilter not in ipchains combination of iptables+Netfilter (with Netfilter not in ipchains
compatibility mode).</li> compatibility mode).</li>
</ul> </ul>
<h3>What is Shorewall?<br> <h3>What is Shorewall?<br>
</h3> </h3>
The Shoreline Firewall, more commonly known as "Shorewall", is The Shoreline Firewall, more commonly known as "Shorewall", is
high-level tool for configuring Netfilter. You describe your high-level tool for configuring Netfilter. You describe your
firewall/gateway requirements using entries in a set of configuration firewall/gateway requirements using entries in a set of
files. Shorewall reads those configuration files and with the help of configuration files. Shorewall reads those configuration files and
the iptables utility, Shorewall configures Netfilter to match your with the help of the iptables utility, Shorewall configures
requirements. Shorewall can be used on a dedicated firewall system, a Netfilter to match your requirements. Shorewall can be used on a
multi-function gateway/router/server or on a standalone GNU/Linux dedicated firewall system, a multi-function gateway/router/server
system. Shorewall does not use Netfilter's ipchains compatibility mode or on a standalone GNU/Linux system. Shorewall does not use
and can thus take advantage of Netfilter's connection state tracking Netfilter's ipchains compatibility mode and can thus take advantage
capabilities.<br> of Netfilter's connection state tracking capabilities.<br>
<br> <br>
Shorewall is <span style="text-decoration: underline;">not</span> a Shorewall is <span style="text-decoration: underline;">not</span> a
daemon. Once Shorewall has configured Netfilter, it's job is complete daemon. Once Shorewall has configured Netfilter, it's job is
although the <a href="starting_and_stopping_shorewall.htm">/sbin/shorewall complete although the <a href=
program can be used at any time to monitor the Netfilter firewall</a>.<br> "starting_and_stopping_shorewall.htm">/sbin/shorewall program can
be used at any time to monitor the Netfilter firewall</a>.<br>
<h3>Getting Started with Shorewall</h3> <h3>Getting Started with Shorewall</h3>
New to Shorewall? Start by selecting the <a
href="shorewall_quickstart_guide.htm">QuickStart Guide</a> that most New to Shorewall? Start by selecting the <a href=
closely match your environment and follow the step by step instructions.<br> "shorewall_quickstart_guide.htm">QuickStart Guide</a> that most
closely match your environment and follow the step by step
instructions.<br>
<h3>Looking for Information?</h3> <h3>Looking for Information?</h3>
The <a href="shorewall_quickstart_guide.htm#Documentation">Documentation
Index</a> is a good place to start as is the Quick Search in the frame The <a href=
above. "shorewall_quickstart_guide.htm#Documentation">Documentation
Index</a> is a good place to start as is the Quick Search in the
frame above.
<h3>License<br> <h3>License<br>
</h3> </h3>
This program is free software; you can redistribute it and/or modify it
under the terms of <a href="http://www.gnu.org/licenses/gpl.html">Version This program is free software; you can redistribute it and/or
2 of the GNU General Public License</a> as published by the Free modify it under the terms of <a href=
Software Foundation.<br> "http://www.gnu.org/licenses/gpl.html">Version 2 of the GNU General
<p> This program is distributed in the hope that it will be Public License</a> as published by the Free Software
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of Foundation.<br>
<p>This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General General Public License for more details.<br>
Public License for more details.<br>
<br> <br>
You should have received a copy of the GNU General Public License along You should have received a copy of the GNU General Public License
with this program; if not, write to the Free Software Foundation, Inc., along with this program; if not, write to the Free Software
675 Mass Ave, Cambridge, MA 02139, USA</p> Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA</p>
<p><a href="copyright.htm">Copyright 2001, 2002, 2003 Thomas M. <p><a href="copyright.htm">Copyright 2001, 2002, 2003 Thomas M.
Eastep</a><br> Eastep</a><br>
</p> </p>
<h3>Running Shorewall on Mandrake with a two-interface setup?</h3> <h3>Running Shorewall on Mandrake with a two-interface setup?</h3>
If so, the documentation<b> </b>on this site will not apply directly
to If so, the documentation <b></b>on this site will not apply
your setup. If you want to use the documentation that you find here, directly to your setup. If you want to use the documentation that
you will want to consider uninstalling what you have and installing a you find here, you will want to consider uninstalling what you have
setup that matches the documentation on this site. See the <a and installing a setup that matches the documentation on this site.
href="two-interface.htm">Two-interface QuickStart Guide</a> for See the <a href="two-interface.htm">Two-interface QuickStart
details.<br> Guide</a> for details.<br>
<h2>News</h2> <h2>News</h2>
<p><b>12/07/2003 - Shorewall 1.4.9 Beta 1 </b><b> <img
style="border: 0px solid ; width: 28px; height: 12px;" <p><b>12/07/2003 - Shorewall 1.4.9 Beta 1</b> <b><img style=
src="images/new10.gif" alt="(New)" title=""><br> "border: 0px solid ; width: 28px; height: 12px;" src=
"images/new10.gif" alt="(New)" title=""><br>
</b></p> </b></p>
<div style="margin-left: 40px;"><a
href="http://shorewall.net/pub/shorewall/Beta">http://shorewall.net/pub/shorewall/Beta</a><br> <div style="margin-left: 40px;"><a href=
<a href="ftp://shorewall.net/pub/shorewall/Beta" target="_top">ftp://shorewall.net/pub/shorewall/Beta</a><br> "http://shorewall.net/pub/shorewall/Beta">http://shorewall.net/pub/shorewall/Beta</a><br>
<a href="ftp://shorewall.net/pub/shorewall/Beta" target=
"_top">ftp://shorewall.net/pub/shorewall/Beta</a><br>
</div> </div>
<p>Problems Corrected since version 1.4.8:<br> <p>Problems Corrected since version 1.4.8:<br>
</p> </p>
<ol> <ol>
<li>There has been a low continuing level of confusion over the <li>There has been a low continuing level of confusion over the
terms "Source NAT" (SNAT) and "Static NAT". To avoid future confusion, terms "Source NAT" (SNAT) and "Static NAT". To avoid future
all instances of "Static NAT" have been replaced with "One-to-one NAT" confusion, all instances of "Static NAT" have been replaced with
in the documentation and configuration files.</li> "One-to-one NAT" in the documentation and configuration files.</li>
<li>The description of NEWNOTSYN in shorewall.conf has been <li>The description of NEWNOTSYN in shorewall.conf has been
reworded for clarity.</li> reworded for clarity.</li>
<li>Wild-card rules (those involving "all" as SOURCE or DEST)
will no longer produce an error if they attempt to add a rule that would <li>Wild-card rules (those involving "all" as SOURCE or DEST) will
override a NONE policy. The logic for expanding these wild-card rules no longer produce an error if they attempt to add a rule that would
now simply skips those (SOURCE,DEST) pairs that have a NONE policy.<br> override a NONE policy. The logic for expanding these wild-card
rules now simply skips those (SOURCE,DEST) pairs that have a NONE
policy.<br>
</li> </li>
</ol> </ol>
<p>Migration Issues:<br> <p>Migration Issues:<br>
<br> <br>
&nbsp;&nbsp;&nbsp; None.<br> &nbsp;&nbsp;&nbsp; None.<br>
<br> <br>
New Features:<br> New Features:<br>
</p> </p>
<ol> <ol>
<li>To cut down on the number of "Why are these ports closed <li>To cut down on the number of "Why are these ports closed rather
rather than stealthed?" questions, the SMB-related rules in than stealthed?" questions, the SMB-related rules in
/etc/shorewall/common.def have been changed from 'reject' to 'DROP'.</li> /etc/shorewall/common.def have been changed from 'reject' to
<li>For easier identification, packets logged under the 'DROP'.</li>
'norfc1918' interface option are now logged out of chains named
'rfc1918'. Previously, such packets were logged under chains named <li>For easier identification, packets logged under the 'norfc1918'
interface option are now logged out of chains named 'rfc1918'.
Previously, such packets were logged under chains named
'logdrop'.</li> 'logdrop'.</li>
<li>Distributors and developers seem to be regularly inventing
new naming conventions for kernel modules. To avoid the need to change <li>Distributors and developers seem to be regularly inventing new
Shorewall code for each new convention, the MODULE_SUFFIX option has naming conventions for kernel modules. To avoid the need to change
been added to shorewall.conf. MODULE_SUFFIX may be set to the suffix Shorewall code for each new convention, the MODULE_SUFFIX option
for module names in your particular distribution. If MODULE_SUFFIX is has been added to shorewall.conf. MODULE_SUFFIX may be set to the
not set in shorewall.conf, Shorewall will use the list "o gz ko o.gz".<br> suffix for module names in your particular distribution. If
MODULE_SUFFIX is not set in shorewall.conf, Shorewall will use the
list "o gz ko o.gz".<br>
<br> <br>
To see what suffix is used by your distribution:<br> To see what suffix is used by your distribution:<br>
<br> <br>
ls /lib/modules/$(uname -r)/kernel/net/ipv4/netfilter<br> ls /lib/modules/$(uname -r)/kernel/net/ipv4/netfilter<br>
<br> <br>
All of the files listed should have the same suffix (extension). Set All of the files listed should have the same suffix (extension).
MODULE_SUFFIX to that suffix.<br> Set MODULE_SUFFIX to that suffix.<br>
<br> <br>
Examples:<br> Examples:<br>
<br> <br>
@ -161,18 +206,20 @@ Examples:<br>
MODULE_SUFFIX="kzo"<br> MODULE_SUFFIX="kzo"<br>
&nbsp;&nbsp;&nbsp;&nbsp; If all files end in ".kz.o" then set &nbsp;&nbsp;&nbsp;&nbsp; If all files end in ".kz.o" then set
MODULE_SUFFIX="kz.o"</li> MODULE_SUFFIX="kz.o"</li>
<li>Support for user defined rule ACTIONS has been implemented <li>Support for user defined rule ACTIONS has been implemented
through two new files:<br> through two new files:<br>
<br> <br>
/etc/shorewall/actions - used to list the user-defined ACTIONS.<br> /etc/shorewall/actions - used to list the user-defined ACTIONS.<br>
/etc/shorewall/action.template - For each user defined &lt;action&gt;, /etc/shorewall/action.template - For each user defined
copy this file to /etc/shorewall/action.&lt;action&gt; and add the &lt;action&gt;, copy this file to
appropriate rules for that &lt;action&gt;. Once an &lt;action&gt; has /etc/shorewall/action.&lt;action&gt; and add the appropriate rules
been defined, it may be used like any of the builtin ACTIONS (ACCEPT, for that &lt;action&gt;. Once an &lt;action&gt; has been defined,
DROP, etc.) in /etc/shorewall/rules.<br> it may be used like any of the builtin ACTIONS (ACCEPT, DROP, etc.)
in /etc/shorewall/rules.<br>
<br> <br>
Example: You want an action that logs a packet at the 'info' level and Example: You want an action that logs a packet at the 'info' level
accepts the connection.<br> and accepts the connection.<br>
<br> <br>
In /etc/shorewall/actions, you would add:<br> In /etc/shorewall/actions, you would add:<br>
<br> <br>
@ -186,105 +233,122 @@ rules:<br>
<br> <br>
</li> </li>
</ol> </ol>
<p><b>12/03/2003 - Support Torch Passed</b><b> <img
style="border: 0px solid ; width: 28px; height: 12px;" <p><b>12/03/2003 - Support Torch Passed</b> <b><img style=
src="images/new10.gif" alt="(New)" title=""></b></p> "border: 0px solid ; width: 28px; height: 12px;" src=
Effective today, I am reducing my participation in the "images/new10.gif" alt="(New)" title=""></b></p>
day-to-day support of Shorewall. As part of this shift to
community-based Shorewall support a new <a Effective today, I am reducing my participation in the day-to-day
href="https://lists.shorewall.net/mailman/listinfo/shorewall-newbies">Shorewall support of Shorewall. As part of this shift to community-based
Newbies mailing list</a> has been established to field questions and Shorewall support a new <a href=
problems from new users. I will not monitor that list personally. I "https://lists.shorewall.net/mailman/listinfo/shorewall-newbies">Shorewall
will continue my active development of Shorewall Newbies mailing list</a> has been established to field questions
and will be available via the development list to handle development and problems from new users. I will not monitor that list
personally. I will continue my active development of Shorewall and
will be available via the development list to handle development
issues -- Tom. issues -- Tom.
<p><b>11/07/2003 - Shorewall 1.4.8</b><b><br> <p><b>11/07/2003 - Shorewall 1.4.8</b><b><br>
<br> <br>
</b> Problems Corrected since version 1.4.7:<br> </b> Problems Corrected since version 1.4.7:<br>
</p> </p>
<ol> <ol>
<li>Tuomo Soini has supplied a correction to a problem that <li>Tuomo Soini has supplied a correction to a problem that occurs
occurs
using some versions of 'ash'. The symptom is that "shorewall start" using some versions of 'ash'. The symptom is that "shorewall start"
fails with:<br> fails with:<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp; local: --limit: bad variable name<br> &nbsp;&nbsp; local: --limit: bad variable name<br>
&nbsp;&nbsp; iptables v1.2.8: Couldn't load match &nbsp;&nbsp; iptables v1.2.8: Couldn't load match
`-j':/lib/iptables/libipt_-j.so:<br> `-j':/lib/iptables/libipt_-j.so:<br>
&nbsp;&nbsp; cannot open shared object file: No such file or directory<br> &nbsp;&nbsp; cannot open shared object file: No such file or
directory<br>
&nbsp;&nbsp; Try `iptables -h' or 'iptables --help' for more &nbsp;&nbsp; Try `iptables -h' or 'iptables --help' for more
information.</li> information.</li>
<li>Andres Zhoglo has supplied a correction that avoids trying
to use the multiport match iptables facility on ICMP rules.<br> <li>Andres Zhoglo has supplied a correction that avoids trying to
use the multiport match iptables facility on ICMP rules.<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp; Example of rule that previously caused "shorewall start" &nbsp;&nbsp; Example of rule that previously caused "shorewall
to fail:<br> start" to fail:<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ACCEPT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; loc&nbsp; $FW&nbsp; ACCEPT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; loc&nbsp; $FW&nbsp;
icmp&nbsp;&nbsp;&nbsp; 0,8,11,12<br> icmp&nbsp;&nbsp;&nbsp; 0,8,11,12<br>
<br> <br>
</li> </li>
<li>Previously, if the following error message was issued, <li>Previously, if the following error message was issued,
Shorewall was left in an inconsistent state.<br> Shorewall was left in an inconsistent state.<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp; Error: Unable to determine the routes through interface xxx<br> &nbsp;&nbsp; Error: Unable to determine the routes through
interface xxx<br>
<br> <br>
</li> </li>
<li>Handling of the LOGUNCLEAN option in shorewall.conf has
been corrected.</li> <li>Handling of the LOGUNCLEAN option in shorewall.conf has been
corrected.</li>
<li>In Shorewall 1.4.2, an optimization was added. This <li>In Shorewall 1.4.2, an optimization was added. This
optimization optimization involved creating a chain named "&lt;zone&gt;_frwd"
involved creating a chain named "&lt;zone&gt;_frwd" for most zones for most zones defined using the /etc/shorewall/hosts file. It has
defined using the /etc/shorewall/hosts file. It has since been since been discovered that in many cases these new chains contain
discovered that in many cases these new chains contain redundant rules redundant rules and that the "optimization" turns out to be less
and that the "optimization" turns out to be less than optimal. The than optimal. The implementation has now been corrected.</li>
implementation has now been corrected.</li>
<li>When the MARK value in a tcrules entry is followed by ":F" <li>When the MARK value in a tcrules entry is followed by ":F" or
or
":P", the ":F" or ":P" was previously only applied to the first ":P", the ":F" or ":P" was previously only applied to the first
Netfilter rule generated by the entry. It is now applied to all entries.</li> Netfilter rule generated by the entry. It is now applied to all
<li>An incorrect comment concerning Debian's use of the entries.</li>
SUBSYSLOCK option has been removed from shorewall.conf.</li>
<li>Previously, neither the 'routefilter' interface option nor <li>An incorrect comment concerning Debian's use of the SUBSYSLOCK
the option has been removed from shorewall.conf.</li>
ROUTE_FILTER parameter were working properly. This has been corrected
(thanks to Eric Bowles for his analysis and patch). The definition of <li>Previously, neither the 'routefilter' interface option nor the
the ROUTE_FILTER option has changed however. Previously, ROUTE_FILTER parameter were working properly. This has been
ROUTE_FILTER=Yes was documented as enabling route filtering on all corrected (thanks to Eric Bowles for his analysis and patch). The
interfaces (which didn't work). Beginning with this release, setting definition of the ROUTE_FILTER option has changed however.
ROUTE_FILTER=Yes will enable route filtering of all interfaces brought Previously, ROUTE_FILTER=Yes was documented as enabling route
up while Shorewall is started. As a consequence, ROUTE_FILTER=Yes can filtering on all interfaces (which didn't work). Beginning with
coexist with the use of the 'routefilter' option in the interfaces file.</li> this release, setting ROUTE_FILTER=Yes will enable route filtering
of all interfaces brought up while Shorewall is started. As a
consequence, ROUTE_FILTER=Yes can coexist with the use of the
'routefilter' option in the interfaces file.</li>
<li>If MAC verification was enabled on an interface with a /32 <li>If MAC verification was enabled on an interface with a /32
address and address and a broadcast address then an error would occur during
a broadcast address then an error would occur during startup.</li> startup.</li>
<li>he NONE policy's intended use is to suppress the generating
of <li>he NONE policy's intended use is to suppress the generating of
rules that can't possibly be traversed. This means that a policy of rules that can't possibly be traversed. This means that a policy of
NONE is inappropriate where the source or destination zone is $FW or NONE is inappropriate where the source or destination zone is $FW
"all". Shorewall now generates an error message if such a policy is or "all". Shorewall now generates an error message if such a policy
given in /etc/shorewall/policy. Previously such a policy caused is given in /etc/shorewall/policy. Previously such a policy caused
"shorewall start" to fail.</li> "shorewall start" to fail.</li>
<li>The 'routeback' option was broken for wildcard interfaces <li>The 'routeback' option was broken for wildcard interfaces
(e.g., (e.g., "tun+"). This has been corrected so that 'routeback' now
"tun+"). This has been corrected so that 'routeback' now works as works as expected in this case.<br>
expected in this case.<br>
</li> </li>
</ol> </ol>
Migration Issues:<br> Migration Issues:<br>
<ol> <ol>
<li>The definition of the ROUTE_FILTER option in shorewall.conf <li>The definition of the ROUTE_FILTER option in shorewall.conf has
has changed as described in item 8) above.<br> changed as described in item 8) above.<br>
</li> </li>
</ol> </ol>
New Features:<br> New Features:<br>
<ol> <ol>
<li>A new QUEUE action has been introduced for rules. QUEUE <li>A new QUEUE action has been introduced for rules. QUEUE allows
allows you to pass connection requests to a user-space filter such as
you to pass connection requests to a user-space filter such as ftwall ftwall (http://p2pwall.sourceforge.net). The ftwall program allows
(http://p2pwall.sourceforge.net). The ftwall program for effective filtering of p2p applications such as Kazaa. For
allows for effective filtering of p2p applications such as Kazaa. For
example, to use ftwall to filter P2P clients in the 'loc' zone, you example, to use ftwall to filter P2P clients in the 'loc' zone, you
would add the following rules:<br> would add the following rules:<br>
<br> <br>
@ -295,76 +359,87 @@ would add the following rules:<br>
&nbsp;&nbsp; QUEUE&nbsp;&nbsp; loc&nbsp;&nbsp;&nbsp; &nbsp;&nbsp; QUEUE&nbsp;&nbsp; loc&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp; fw&nbsp;&nbsp;&nbsp;&nbsp; udp<br> &nbsp;&nbsp;&nbsp;&nbsp; fw&nbsp;&nbsp;&nbsp;&nbsp; udp<br>
<br> <br>
You would normally want to place those three rules BEFORE any ACCEPT You would normally want to place those three rules BEFORE any
rules for loc-&gt;net udp or tcp.<br> ACCEPT rules for loc-&gt;net udp or tcp.<br>
<br> <br>
Note: When the protocol specified is TCP ("tcp", "TCP" or "6"), Note: When the protocol specified is TCP ("tcp", "TCP" or "6"),
Shorewall will only pass connection requests (SYN packets) to user Shorewall will only pass connection requests (SYN packets) to user
space. This is for compatibility with ftwall.</li> space. This is for compatibility with ftwall.</li>
<li>A BLACKLISTNEWNONLY option has been added to
shorewall.conf. When this option is set to "Yes", the blacklists <li>A BLACKLISTNEWNONLY option has been added to shorewall.conf.
(dynamic and static) are only consulted for new connection requests. When this option is set to "Yes", the blacklists (dynamic and
When set to "No" (the default if the variable is not set), the static) are only consulted for new connection requests. When set to
blacklists are consulted on every packet.<br> "No" (the default if the variable is not set), the blacklists are
consulted on every packet.<br>
<br> <br>
Setting this option to "No" allows blacklisting to stop existing Setting this option to "No" allows blacklisting to stop existing
connections from a newly blacklisted host but is more expensive in connections from a newly blacklisted host but is more expensive in
terms of packet processing time. This is especially true if the terms of packet processing time. This is especially true if the
blacklists contain a large number of entries.</li> blacklists contain a large number of entries.</li>
<li>Chain names used in the /etc/shorewall/accounting file may
now begin with a digit ([0-9]) and may contain embedded dashes ("-").</li> <li>Chain names used in the /etc/shorewall/accounting file may now
begin with a digit ([0-9]) and may contain embedded dashes
("-").</li>
</ol> </ol>
<p><b>10/26/2003 - Shorewall 1.4.7a and 1.4.7b win brown paper
bag awards </b><b><img <p><b>10/26/2003 - Shorewall 1.4.7a and 1.4.7b win brown paper bag
style="border: 0px solid ; width: 50px; height: 80px;" awards</b> <b><img style=
src="images/j0233056.gif" align="middle" title="" alt="">Shorewall "border: 0px solid ; width: 50px; height: 80px;" src=
"images/j0233056.gif" align="middle" title="" alt="">Shorewall
1.4.7c released.</b></p> 1.4.7c released.</b></p>
<ol> <ol>
<li>The saga with "&lt;zone&gt;_frwd" chains continues. The <li>The saga with "&lt;zone&gt;_frwd" chains continues. The 1.4.7c
1.4.7c script produces a ruleset that should work for everyone even if it
script produces a ruleset that should work for everyone even if it is is not quite optimal. My apologies for this ongoing mess.<br>
not
quite optimal. My apologies for this ongoing mess.<br>
</li> </li>
</ol> </ol>
<p><b>10/24/2003 - Shorewall 1.4.7b</b></p> <p><b>10/24/2003 - Shorewall 1.4.7b</b></p>
<p>This is a bugfx rollup of the 1.4.7a fixes plus:<br> <p>This is a bugfx rollup of the 1.4.7a fixes plus:<br>
</p> </p>
<ol> <ol>
<li>The fix for problem 5 in 1.4.7a was wrong with the result <li>The fix for problem 5 in 1.4.7a was wrong with the result that
that "&lt;zone&gt;_frwd" chains might contain too few rules. That wrong
"&lt;zone&gt;_frwd" chains might contain too few rules. That wrong code code is corrected in this release.<br>
is corrected in this release.<br>
</li> </li>
</ol> </ol>
<p><b>10/21/2003 - Shorewall 1.4.7a</b></p> <p><b>10/21/2003 - Shorewall 1.4.7a</b></p>
<p>This is a bugfix rollup of the following problem corrections:<br>
<p>This is a bugfix rollup of the following problem
corrections:<br>
</p> </p>
<ol> <ol>
<li>Tuomo Soini has supplied a correction to a problem that <li>Tuomo Soini has supplied a correction to a problem that occurs
occurs
using some versions of 'ash'. The symptom is that "shorewall start" using some versions of 'ash'. The symptom is that "shorewall start"
fails with:<br> fails with:<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp; local: --limit: bad variable name<br> &nbsp;&nbsp; local: --limit: bad variable name<br>
&nbsp;&nbsp; iptables v1.2.8: Couldn't load match &nbsp;&nbsp; iptables v1.2.8: Couldn't load match
`-j':/lib/iptables/libipt_-j.so:<br> `-j':/lib/iptables/libipt_-j.so:<br>
&nbsp;&nbsp; cannot open shared object file: No such file or directory<br> &nbsp;&nbsp; cannot open shared object file: No such file or
directory<br>
&nbsp;&nbsp; Try `iptables -h' or 'iptables --help' for more &nbsp;&nbsp; Try `iptables -h' or 'iptables --help' for more
information.<br> information.<br>
<br> <br>
</li> </li>
<li>Andres Zhoglo has supplied a correction that avoids trying
to use the multiport match iptables facility on ICMP rules.<br> <li>Andres Zhoglo has supplied a correction that avoids trying to
use the multiport match iptables facility on ICMP rules.<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp; Example of rule that previously caused "shorewall start" &nbsp;&nbsp; Example of rule that previously caused "shorewall
to fail:<br> start" to fail:<br>
&nbsp;<br> &nbsp;<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
ACCEPT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; loc&nbsp; $FW&nbsp; ACCEPT&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; loc&nbsp; $FW&nbsp;
icmp&nbsp;&nbsp;&nbsp; 0,8,11,12<br> icmp&nbsp;&nbsp;&nbsp; 0,8,11,12<br>
<br> <br>
</li> </li>
<li>Previously, if the following error message was issued, <li>Previously, if the following error message was issued,
Shorewall was left in an inconsistent state.<br> Shorewall was left in an inconsistent state.<br>
&nbsp;<br> &nbsp;<br>
@ -372,54 +447,59 @@ Shorewall was left in an inconsistent state.<br>
interface xxx<br> interface xxx<br>
<br> <br>
</li> </li>
<li>Handling of the LOGUNCLEAN option in shorewall.conf has
been corrected.</li> <li>Handling of the LOGUNCLEAN option in shorewall.conf has been
corrected.</li>
<li>In Shorewall 1.4.2, an optimization was added. This <li>In Shorewall 1.4.2, an optimization was added. This
optimization optimization involved creating a chain named "&lt;zone&gt;_frwd"
involved creating a chain named "&lt;zone&gt;_frwd" for most zones for most zones defined using the /etc/shorewall/hosts file. It has
defined using the /etc/shorewall/hosts file. It has since been since been discovered that in many cases these new chains contain
discovered that in many cases these new chains contain redundant rules redundant rules and that the "optimization" turns out to be less
and that the "optimization" turns out to be less than optimal. The than optimal. The implementation has now been corrected.</li>
implementation has now been corrected.</li>
<li>When the MARK value in a tcrules entry is followed by ":F" <li>When the MARK value in a tcrules entry is followed by ":F" or
or
":P", the ":F" or ":P" was previously only applied to the first ":P", the ":F" or ":P" was previously only applied to the first
Netfilter rule generated by the entry. It is now applied to all entries.<br> Netfilter rule generated by the entry. It is now applied to all
entries.<br>
</li> </li>
</ol> </ol>
<ol>
</ol>
<p><b></b></p>
<ol>
</ol>
<p><a href="News.htm">More News</a></p> <p><a href="News.htm">More News</a></p>
<p> <a href="http://leaf.sourceforge.net" target="_top"><img
border="0" src="images/leaflogo.gif" width="49" height="36" <p><a href="http://leaf.sourceforge.net" target="_top"><img border=
alt="(Leaf Logo)"> </a>Jacques Nilo and Eric Wolzak have a LEAF "0" src="images/leaflogo.gif" width="49" height="36" alt=
(router/firewall/gateway on a floppy, CD or compact flash) distribution "(Leaf Logo)"></a> Jacques Nilo and Eric Wolzak have a LEAF
called <i>Bering</i> that features Shorewall-1.4.2 and Kernel-2.4.20. (router/firewall/gateway on a floppy, CD or compact flash)
You can find their work at: <a distribution called <i>Bering</i> that features Shorewall-1.4.2 and
href="http://leaf.sourceforge.net/devel/jnilo"> Kernel-2.4.20. You can find their work at: <a href=
http://leaf.sourceforge.net/devel/jnilo<br> "http://leaf.sourceforge.net/devel/jnilo">http://leaf.sourceforge.net/devel/jnilo<br>
</a></p> </a></p>
<b>Congratulations to Jacques and Eric on the recent release of <b>Congratulations to Jacques and Eric on the recent release of
Bering 1.2!!!<br> Bering 1.2!!!<br>
<br> <br>
</b> </b>
<div style="text-align: center;"> <div style="text-align: center;">
<div style="text-align: center;"><a <div style="text-align: center;"><a href="http://www.shorewall.net"
href="http://www.shorewall.net" target="_top"><img target="_top"><img src="images/ProtectedBy.png" title="" alt=
src="images/ProtectedBy.png" title="" alt="(Protected by Shorewall)" "(Protected by Shorewall)" style=
style="border: 0px solid ; width: 216px; height: 45px;"></a></div> "border: 0px solid ; width: 216px; height: 45px;"></a></div>
</div> </div>
<h2><a name="Donations"></a>Donations</h2> <h2><a name="Donations"></a>Donations</h2>
<p style="text-align: left;"><a href="http://www.starlight.org"> <img
style="border: 4px solid ; width: 57px; height: 100px;" <p style="text-align: left;"><a href=
src="images/newlog.gif" align="left" hspace="10" alt="(Starlight Logo)" "http://www.starlight.org"><img style=
"border: 4px solid ; width: 57px; height: 100px;" src=
"images/newlog.gif" align="left" hspace="10" alt="(Starlight Logo)"
title=""></a><br> title=""></a><br>
<big>Shorewall is free but if you try it and find it useful, <big>Shorewall is free but if you try it and find it useful,
please consider making a donation to <a href="http://www.starlight.org">Starlight please consider making a donation to <a href=
Children's Foundation</a>. Thanks!</big><br> "http://www.starlight.org">Starlight Children's Foundation</a>.
Thanks!</big><br>
<a href="http://www.starlight.org"></a></p> <a href="http://www.starlight.org"></a></p>
</td> </td>
</tr> </tr>
@ -427,8 +507,10 @@ Children's Foundation</a>. Thanks!</big><br>
</table> </table>
</center> </center>
</div> </div>
<p><font size="2">Updated 12/07/2003 - <a href="support.htm">Tom Eastep</a></font>
<br> <p><font size="2">Updated 12/07/2003 - <a href="support.htm">Tom
Eastep</a></font><br>
</p> </p>
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</html> </html>