mirror of
https://gitlab.com/shorewall/code.git
synced 2025-08-09 23:54:22 +02:00
Sync with CVS
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@473 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
This commit is contained in:
teastep
@ -6,7 +6,7 @@
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<meta http-equiv="Content-Type"
|
||||
content="text/html; charset=windows-1252">
|
||||
<title>Shoreline Firewall (Shorewall) 1.3</title>
|
||||
@ -15,22 +15,24 @@
|
||||
|
||||
|
||||
|
||||
<base target="_self">
|
||||
<base
|
||||
target="_self">
|
||||
</head>
|
||||
<body>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<table border="0" cellpadding="0" cellspacing="4"
|
||||
style="border-collapse: collapse;" width="100%" id="AutoNumber3"
|
||||
bgcolor="#4b017c">
|
||||
|
||||
<tbody>
|
||||
<tbody>
|
||||
|
||||
<tr>
|
||||
<tr>
|
||||
|
||||
<td width="100%" height="90">
|
||||
<td width="100%"
|
||||
height="90">
|
||||
|
||||
|
||||
|
||||
@ -40,13 +42,12 @@
|
||||
|
||||
|
||||
|
||||
|
||||
<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
|
||||
</a></i></font><font
|
||||
color="#ffffff">Shorewall 1.3 - <font
|
||||
size="4">"<i>iptables made easy"</i></font></font><a
|
||||
href="http://www.sf.net"> </a></h1>
|
||||
@ -59,35 +60,36 @@
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<div align="center"><a href="/1.2/index.html" target="_top"><font
|
||||
color="#ffffff">Shorewall 1.2 Site here</font></a></div>
|
||||
|
||||
</td>
|
||||
</tr>
|
||||
</td>
|
||||
</tr>
|
||||
|
||||
|
||||
|
||||
|
||||
</tbody>
|
||||
|
||||
|
||||
</tbody>
|
||||
|
||||
</table>
|
||||
|
||||
|
||||
|
||||
|
||||
<div align="center">
|
||||
|
||||
<center>
|
||||
|
||||
|
||||
<div align="center">
|
||||
|
||||
<center>
|
||||
|
||||
<table border="0" cellpadding="0" cellspacing="0"
|
||||
style="border-collapse: collapse;" width="100%" id="AutoNumber4">
|
||||
|
||||
<tbody>
|
||||
<tbody>
|
||||
|
||||
<tr>
|
||||
<tr>
|
||||
|
||||
<td width="90%">
|
||||
<td width="90%">
|
||||
|
||||
|
||||
|
||||
@ -97,7 +99,8 @@
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h2 align="left">What is it?</h2>
|
||||
|
||||
|
||||
@ -110,12 +113,12 @@
|
||||
|
||||
|
||||
|
||||
|
||||
<p>The Shoreline Firewall, more commonly known as<61> "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>The Shoreline Firewall, more commonly known as<61> "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>
|
||||
|
||||
|
||||
|
||||
@ -127,29 +130,29 @@ 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>
|
||||
|
||||
<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>
|
||||
<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>
|
||||
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>
|
||||
<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>
|
||||
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>
|
||||
|
||||
|
||||
|
||||
@ -161,7 +164,7 @@ for more details.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<p><a href="copyright.htm">Copyright 2001, 2002, 2003 Thomas M. Eastep</a></p>
|
||||
|
||||
|
||||
@ -174,23 +177,23 @@ for more details.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<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</a></p>
|
||||
<b>Congratulations to Jacques
|
||||
and Eric on the recent release of Bering 1.0 Final!!! <br>
|
||||
</b>
|
||||
</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-1.3.14
|
||||
and Kernel-2.4.20. You can find their work at:
|
||||
<a href="http://leaf.sourceforge.net/devel/jnilo"> http://leaf.sourceforge.net/devel/jnilo</a></p>
|
||||
<b>Congratulations to Jacques
|
||||
and Eric on the recent release of Bering 1.1!!! <br>
|
||||
</b>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h2>News</h2>
|
||||
|
||||
|
||||
@ -205,107 +208,180 @@ for more details.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
<p><b>2/8/2003 - Shorewall 1.3.14</b><b> </b><b><img
|
||||
|
||||
<p><b>2/21/2003 - Shorewall 1.4.0 Beta 1 </b><b> </b><b><img
|
||||
border="0" src="images/new10.gif" width="28" height="12" alt="(New)">
|
||||
</b></p>
|
||||
|
||||
<p>New features include</p>
|
||||
|
||||
<20></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 <u>REQUIRES</u></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>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>
|
||||
<EFBFBD><EFBFBD> b) In the INTERFACE column of /etc/shorewall/nat<br>
|
||||
<EFBFBD></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>
|
||||
<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 <device>:<integer> 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>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>
|
||||
|
||||
<li>The icmp.def file has been removed.<br>
|
||||
</li>
|
||||
|
||||
</ol>
|
||||
|
||||
<p><b>2/5/2003 - Shorewall Support included in Webmin 1.06</b><b>0
|
||||
</b><b><img border="0" src="images/new10.gif" width="28"
|
||||
height="12" alt="(New)">
|
||||
</b></p>
|
||||
Webmin version 1.060 now has Shorewall support included as standard.
|
||||
See <a href="http://www.webmin.com">http://www.webmin.com</a> <b>
|
||||
</b>
|
||||
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.
|
||||
</li>
|
||||
|
||||
</ol>
|
||||
|
||||
<p><b>2/8/2003 - Shorewall 1.3.14</b><b> </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><b>2/5/2003 - Shorewall Support included in Webmin 1.06</b><b>0</b><b>
|
||||
</b></p>
|
||||
Webmin version 1.060 now has Shorewall support included as standard.
|
||||
See <a href="http://www.webmin.com">http://www.webmin.com</a> <b>
|
||||
</b>
|
||||
<p><b></b></p>
|
||||
|
||||
|
||||
@ -315,7 +391,7 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<ul>
|
||||
|
||||
|
||||
@ -324,7 +400,7 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
</ul>
|
||||
|
||||
|
||||
@ -333,7 +409,7 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<p><a href="News.htm">More News</a></p>
|
||||
|
||||
|
||||
@ -346,31 +422,31 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h2> </h2>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h1 align="center"><a href="http://www.sf.net"><img align="left"
|
||||
alt="SourceForge Logo"
|
||||
src="http://sourceforge.net/sflogo.php?group_id=22587&type=3">
|
||||
</a></h1>
|
||||
</a></h1>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h4> </h4>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h2>This site is hosted by the generous folks at <a
|
||||
href="http://www.sf.net">SourceForge.net</a> </h2>
|
||||
|
||||
@ -378,44 +454,44 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<h2><a name="Donations"></a>Donations</h2>
|
||||
|
||||
|
||||
</td>
|
||||
</td>
|
||||
|
||||
<td width="88"
|
||||
<td width="88"
|
||||
bgcolor="#4b017c" valign="top" align="center"> <br>
|
||||
</td>
|
||||
</td>
|
||||
|
||||
</tr>
|
||||
</tr>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
</tbody>
|
||||
|
||||
|
||||
</tbody>
|
||||
|
||||
</table>
|
||||
|
||||
</center>
|
||||
</center>
|
||||
|
||||
</div>
|
||||
</div>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<table border="0" cellpadding="5" cellspacing="0"
|
||||
style="border-collapse: collapse;" width="100%" id="AutoNumber2"
|
||||
bgcolor="#4b017c">
|
||||
|
||||
<tbody>
|
||||
<tbody>
|
||||
|
||||
<tr>
|
||||
<tr>
|
||||
|
||||
<td width="100%"
|
||||
style="margin-top: 1px;">
|
||||
<td width="100%"
|
||||
style="margin-top: 1px;">
|
||||
|
||||
|
||||
|
||||
@ -424,12 +500,13 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
<p align="center"><a href="http://www.starlight.org"> <img
|
||||
border="4" src="images/newlog.gif" width="57" height="100" align="left"
|
||||
hspace="10">
|
||||
|
||||
</a></p>
|
||||
</a></p>
|
||||
|
||||
|
||||
|
||||
@ -440,32 +517,36 @@ masquerading to occur on subnetworks that you don't wish to masquerade.<br>
|
||||
|
||||
|
||||
|
||||
|
||||
<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>
|
||||
|
||||
<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>
|
||||
|
||||
</tr>
|
||||
</td>
|
||||
|
||||
</tr>
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
</tbody>
|
||||
|
||||
|
||||
</tbody>
|
||||
|
||||
</table>
|
||||
|
||||
|
||||
|
||||
|
||||
<p><font size="2">Updated 2/14/2003 - <a href="support.htm">Tom Eastep</a></font>
|
||||
|
||||
<br>
|
||||
</p>
|
||||
|
||||
<p><font size="2">Updated 2/19/2003 - <a href="support.htm">Tom Eastep</a></font>
|
||||
|
||||
<br>
|
||||
</p>
|
||||
<br>
|
||||
<br>
|
||||
<br>
|
||||
</body>
|
||||
</html>
|
||||
|
||||
Reference in New Issue
Block a user