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shorewall_code/Shorewall-docs/seattlefirewall_index.htm
teastep b35d93acac Documentation changes for OLD_PING_HANDLING 
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Shoreline Firewall (Shorewall) 1.3</title>
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<h1 align="center"> <font size="4"><i> <a
href="http://www.cityofshoreline.com"> <img vspace="4" hspace="4"
alt="Shorwall Logo" height="70" width="85" align="left"
src="images/washington.jpg" border="0">
</a></i></font><font color="#ffffff">Shorewall 1.3
- <font size="4">"<i>iptables made easy"</i></font></font></h1>
<div align="center"><a
href="http://shorewall.sf.net/1.2/index.html" target="_top"><font
color="#ffffff">Shorewall 1.2 Site here</font></a><br>
</div>
<br>
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<h2 align="left">What is it?</h2>
<p>The Shoreline Firewall, more commonly known as "Shorewall", is a
<a href="http://www.netfilter.org">Netfilter</a> (iptables) based firewall
that can be used on a dedicated firewall system, a multi-function
gateway/router/server or on a standalone GNU/Linux system.</p>
<p>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 2 of the GNU General
Public License</a> as published by the Free Software Foundation.<br>
<br>
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 General Public License for more details.<br>
<br>
You should have received a copy of the
GNU General Public License along with this
program; if not, write to the Free Software Foundation,
Inc., 675 Mass Ave, Cambridge, MA 02139, USA</p>
<p><a href="copyright.htm">Copyright 2001, 2002, 2003 Thomas M. Eastep</a></p>
<p> <a href="http://leaf.sourceforge.net" target="_top"><img
border="0" src="images/leaflogo.gif" width="49" height="36">
</a>Jacques Nilo and Eric Wolzak
have a LEAF (router/firewall/gateway on a floppy, CD or
compact flash) distribution called <i>Bering</i>
that features Shorewall-1.3.10 and Kernel-2.4.18.
You can find their work at: <a
href="http://leaf.sourceforge.net/devel/jnilo"> http://leaf.sourceforge.net/devel/jnilo<br>
</a></p>
<p><b>Congratulations to Jacques and Eric on the recent release of Bering
1.0 Final!!! </b><br>
</p>
<h2>This is a mirror of the main Shorewall web site at SourceForge (<a
href="http://shorewall.sf.net" target="_top">http://shorewall.sf.net</a>)</h2>
<h2>News</h2>
<h2></h2>
<p><b>1/18/2002 - Shorewall 1.3.13 Documentation in PDF Format</b><b><EFBFBD></b><b><img
border="0" src="images/new10.gif" width="28" height="12" alt="(New)">
</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><b><img
border="0" src="images/new10.gif" width="28" height="12" alt="(New)">
<20></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</b><br>
</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 -</b><b><big><big><big><big><big><big><big><big> B</big></big></big></big></big><small>U<small>R<small>N<small>O<small>U<small>T</small></small></small></small></small></small></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><b>
</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><b>
</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</b><br>
</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> You may download the Beta from:<br>
</p>
<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>12/20/2002 - Shorewall 1.3.12 Beta 2</b><b>
</b></p>
The first public Beta version of Shorewall 1.3.12 is now
available (Beta 1 was made available to a limited audience). <br>
<br>
Features include:<br>
<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="150" 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><b>
</b></p>
<p>Two months and 3 days after I pre-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 - <20>Debian 1.3.11a Packages Available</b><br>
</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><b>
</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>11/25/2002 - Shorewall 1.3.11 Documentation in PDF Format</b><b>
</b></p>
<p>Juraj Ontkanin has produced a PDF containing the Shorewall 1.3.11
documenation. the PDF may be downloaded from</p>
<p><EFBFBD><EFBFBD><EFBFBD> <a
href="ftp://slovakia.shorewall.net/mirror/shorewall/pdf/" target="_top">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>11/24/2002 - Shorewall 1.3.11</b><b><EFBFBD></b><b>
</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></b><a href="News.htm">More News</a></p>
<h2><a name="Donations"></a>Donations</h2>
</td>
<td width="88" bgcolor="#4b017c" valign="top"
align="center"> <a href="http://sourceforge.net">M</a></td>
</tr>
</tbody>
</table>
</center>
</div>
<table border="0" cellpadding="5" cellspacing="0"
style="border-collapse: collapse;" width="100%" id="AutoNumber2"
bgcolor="#4b017c">
<tbody>
<tr>
<td width="100%" style="margin-top: 1px;">
<p align="center"><a href="http://www.starlight.org"> <img
border="4" src="images/newlog.gif" width="57" height="100" align="left"
hspace="10">
<20>
</a></p>
<p align="center"><font size="4" color="#ffffff">Shorewall is free but
if you try it and find it useful, please consider making a donation
to <a
href="http://www.starlight.org"><font color="#ffffff">Starlight Children's
Foundation.</font></a> Thanks!</font></p>
</td>
</tr>
</tbody>
</table>
<p><font size="2">Updated 1/18/2003 - <a href="support.htm">Tom Eastep</a></font>
<br>
</p>
<br>
</body>
</html>
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