forked from extern/shorewall_code
07f66da156
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@483 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
312 lines
15 KiB
HTML
Executable File
312 lines
15 KiB
HTML
Executable File
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
||
<html>
|
||
<head>
|
||
|
||
<meta http-equiv="Content-Type"
|
||
content="text/html; charset=windows-1252">
|
||
<title>Upgrade Issues</title>
|
||
|
||
|
||
<meta name="GENERATOR" content="Microsoft FrontPage 5.0">
|
||
|
||
<meta name="ProgId" content="FrontPage.Editor.Document">
|
||
|
||
<meta name="Microsoft Theme" content="none">
|
||
</head>
|
||
<body>
|
||
|
||
<table border="0" cellpadding="0" cellspacing="0"
|
||
style="border-collapse: collapse;" width="100%" id="AutoNumber1"
|
||
bgcolor="#400169" height="90">
|
||
<tbody>
|
||
<tr>
|
||
<td width="100%">
|
||
|
||
<h1 align="center"><font color="#ffffff">Upgrade Issues</font></h1>
|
||
</td>
|
||
</tr>
|
||
|
||
</tbody>
|
||
</table>
|
||
|
||
<p>For upgrade instructions see the <a
|
||
href="Install.htm">Install/Upgrade page</a>.</p>
|
||
|
||
<h3> </h3>
|
||
|
||
<h3>Version >= 1.4.0</h3>
|
||
<b>IMPORTANT: Shorewall >=1.4.0 <u>REQUIRES</u></b> <b>the iproute package
|
||
('ip' utility).</b><br>
|
||
<br>
|
||
If you are upgrading from a version < 1.4.0, then:<br>
|
||
|
||
<ul>
|
||
<li>The <b>noping </b>and <b>forwardping</b> interface options are
|
||
no longer supported nor is the <b>FORWARDPING </b>option in shorewall.conf.
|
||
ICMP echo-request (ping) packets are treated just like any other connection
|
||
request and are subject to rules and policies.</li>
|
||
<li>Interface names of the form <device>:<integer> in
|
||
/etc/shorewall/interfaces now generate a Shorewall error at startup (they
|
||
always have produced warnings in iptables).</li>
|
||
<li>The MERGE_HOSTS variable has been removed from shorewall.conf.
|
||
Shorewall 1.4 behaves like 1.3 did when MERGE_HOSTS=Yes; that is zone contents
|
||
are determined by BOTH the interfaces and hosts files when there are entries
|
||
for the zone in both files.</li>
|
||
<li>The <b>routestopped</b> option in the interfaces and hosts file
|
||
has been eliminated; use entries in the routestopped file instead.</li>
|
||
<li>The Shorewall 1.2 syntax for DNAT and REDIRECT rules is no longer
|
||
accepted; you must convert to using the new syntax.</li>
|
||
<li value="6">The ALLOWRELATED variable in shorewall.conf is no longer
|
||
supported. Shorewall 1.4 behavior is the same as 1.3 with ALLOWRELATED=Yes.</li>
|
||
<li value="6">Late-arriving DNS replies are not dropped by default;
|
||
there is no need for your own /etc/shorewall/common file simply to avoid
|
||
logging these packets.</li>
|
||
<li value="6">The 'firewall', 'functions' and 'version' file have been
|
||
moved to /usr/share/shorewall.</li>
|
||
<li value="6">The icmp.def file has been removed. If you include it
|
||
from /etc/shorewall/icmpdef, you will need to modify that file.</li>
|
||
<li value="8">The 'multi' interface option is no longer supported. <20>Shorewall
|
||
will generate rules for sending packets back out the same interface that
|
||
they arrived on in two cases:</li>
|
||
|
||
</ul>
|
||
|
||
<ul>
|
||
|
||
<ul>
|
||
<li>There is an <u>explicit</u> policy for the source zone to or from
|
||
the destination zone. An explicit policy names both zones and does not use
|
||
the 'all' reserved word.</li>
|
||
|
||
</ul>
|
||
|
||
<ul>
|
||
<li>There are one or more rules for traffic for the source zone to
|
||
or from the destination zone including rules that use the 'all' reserved
|
||
word. Exception: if the source zone and destination zone are the same then
|
||
the rule must be explicit - it must name the zone in both the SOURCE and
|
||
DESTINATION columns.</li>
|
||
|
||
</ul>
|
||
<li>If you followed the advice in FAQ #2 and call find_interface_address
|
||
in /etc/shorewall/params, that code should be moved to /etc/shorewall/init.<br>
|
||
</li>
|
||
|
||
</ul>
|
||
|
||
<ul>
|
||
|
||
</ul>
|
||
|
||
<h3>Version >= 1.3.14</h3>
|
||
<img src="images/BD21298_3.gif" alt="" width="13" height="13">
|
||
<20><> <20> Beginning in version 1.3.14, Shorewall treats entries in <a
|
||
href="Documentation.htm#Masq">/etc/shorewall/masq </a>differently. The change
|
||
involves entries with an <b>interface name</b> in the <b>SUBNET</b> (second)
|
||
<b>column</b>:<br>
|
||
|
||
<ul>
|
||
<li>Prior to 1.3.14, Shorewall would detect the FIRST subnet on the
|
||
interface (as shown by "ip addr show <i>interface</i>") and would masquerade
|
||
traffic from that subnet. Any other subnets that routed through eth1 needed
|
||
their own entry in /etc/shorewall/masq to be masqueraded or to have SNAT
|
||
applied.</li>
|
||
<li>Beginning with Shorewall 1.3.14, Shorewall uses the firewall's
|
||
routing table to determine ALL subnets routed through the named interface.
|
||
Traffic originating in ANY of those subnets is masqueraded or has SNAT
|
||
applied.</li>
|
||
|
||
</ul>
|
||
You will need to make a change to your configuration if:<br>
|
||
|
||
<ol>
|
||
<li>You have one or more entries in /etc/shorewall/masq with an interface
|
||
name in the SUBNET (second) column; and</li>
|
||
<li>That interface connects to more than one subnetwork.</li>
|
||
|
||
</ol>
|
||
Two examples:<br>
|
||
<br>
|
||
<20><b>Example 1</b> -- Suppose that your current config is as follows:<br>
|
||
<20><> <br>
|
||
|
||
<pre> [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<br> [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>
|
||
|
||
<blockquote>In this case, the second entry in /etc/shorewall/masq is no longer
|
||
required.<br>
|
||
</blockquote>
|
||
<b>Example 2</b>-- What if your current configuration is like this?<br>
|
||
|
||
<pre> [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 <br> [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>
|
||
|
||
<blockquote>In this case, you would want to change the entry in /etc/shorewall/masq
|
||
to:<br>
|
||
</blockquote>
|
||
|
||
<pre> #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>
|
||
<img src="images/BD21298_3.gif" alt="" width="13" height="13">
|
||
<20><><EFBFBD> Version 1.3.14 also introduced simplified ICMP echo-request (ping)
|
||
handling. The option OLD_PING_HANDLING=Yes in /etc/shorewall/shorewall.conf
|
||
is used to specify that the old (pre-1.3.14) ping handling is to be used
|
||
(If the option is not set in your /etc/shorewall/shorewall.conf then OLD_PING_HANDLING=Yes
|
||
is assumed). I don't plan on supporting the old handling indefinitely so
|
||
I urge current users to migrate to using the new handling as soon as possible.
|
||
See the <a href="ping.html">'Ping' handling documentation</a> for details.<br>
|
||
|
||
<h3>Version 1.3.10</h3>
|
||
If you have installed the 1.3.10 Beta 1 RPM and are now upgrading
|
||
to version 1.3.10, you will need to use the '--force' option:<br>
|
||
<br>
|
||
|
||
<blockquote>
|
||
<pre>rpm -Uvh --force shorewall-1.3.10-1.noarch.rpm<70></pre>
|
||
</blockquote>
|
||
|
||
<h3>Version >= 1.3.9</h3>
|
||
The 'functions' file has moved to /usr/lib/shorewall/functions.
|
||
If you have an application that uses functions from that file, your application
|
||
will need to be changed to reflect this change of location.<br>
|
||
|
||
<h3>Version >= 1.3.8</h3>
|
||
|
||
<p>If you have a pair of firewall systems configured for failover
|
||
or if you have asymmetric routing, you will need to modify
|
||
your firewall setup slightly under Shorewall
|
||
versions >= 1.3.8. Beginning with version 1.3.8,
|
||
you must set NEWNOTSYN=Yes in your
|
||
/etc/shorewall/shorewall.conf file.</p>
|
||
|
||
<h3>Version >= 1.3.7</h3>
|
||
|
||
<p>Users specifying ALLOWRELATED=No in /etc/shorewall.conf
|
||
will need to include the following rules
|
||
in their /etc/shorewall/icmpdef file (creating
|
||
this file if necessary):</p>
|
||
|
||
<pre> run_iptables -A icmpdef -p ICMP --icmp-type echo-reply -j ACCEPT<br> run_iptables -A icmpdef -p ICMP --icmp-type source-quench -j ACCEPT<br> run_iptables -A icmpdef -p ICMP --icmp-type destination-unreachable -j ACCEPT<br> run_iptables -A icmpdef -p ICMP --icmp-type time-exceeded -j ACCEPT<br> run_iptables -A icmpdef -p ICMP --icmp-type parameter-problem -j ACCEPT</pre>
|
||
|
||
<p>Users having an /etc/shorewall/icmpdef file may remove the ". /etc/shorewall/icmp.def"
|
||
command from that file since the icmp.def file is now empty.</p>
|
||
|
||
<h3><b><a name="Bering">Upgrading </a>Bering to
|
||
Shorewall >= 1.3.3</b></h3>
|
||
|
||
<p>To properly upgrade with Shorewall version
|
||
1.3.3 and later:</p>
|
||
|
||
<ol>
|
||
<li>Be sure you have a backup
|
||
-- you will need to transcribe any Shorewall
|
||
configuration changes that you have
|
||
made to the new configuration.</li>
|
||
<li>Replace the shorwall.lrp
|
||
package provided on the Bering floppy
|
||
with the later one. If you did not obtain
|
||
the later version from Jacques's site,
|
||
see additional instructions below.</li>
|
||
<li>Edit the /var/lib/lrpkg/root.exclude.list
|
||
file and remove the /var/lib/shorewall
|
||
entry if present. Then do not forget
|
||
to backup root.lrp !</li>
|
||
|
||
</ol>
|
||
|
||
<p>The .lrp that I release isn't set up for a two-interface firewall like
|
||
Jacques's. You need to follow the <a href="two-interface.htm">instructions
|
||
for setting up a two-interface firewall</a> plus you also need to add
|
||
the following two Bering-specific rules to /etc/shorewall/rules:</p>
|
||
|
||
<blockquote>
|
||
<pre># Bering specific rules:<br># allow loc to fw udp/53 for dnscache to work<br># allow loc to fw tcp/80 for weblet to work<br>#<br>ACCEPT loc fw udp 53<br>ACCEPT loc fw tcp 80</pre>
|
||
</blockquote>
|
||
|
||
<h3 align="left">Version 1.3.6 and 1.3.7</h3>
|
||
|
||
<p align="left">If you have a pair of firewall systems configured for
|
||
failover or if you have asymmetric routing, you will need to modify
|
||
your firewall setup slightly under Shorewall versions 1.3.6
|
||
and 1.3.7</p>
|
||
|
||
<ol>
|
||
<li>
|
||
|
||
<p align="left">Create the file /etc/shorewall/newnotsyn and in it add
|
||
the following rule<br>
|
||
<br>
|
||
<font face="Courier">run_iptables -A newnotsyn -j RETURN
|
||
# So that the connection tracking table can be rebuilt<br>
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> # from non-SYN
|
||
packets after takeover.<br>
|
||
<20></font> </p>
|
||
</li>
|
||
<li>
|
||
|
||
<p align="left">Create /etc/shorewall/common (if you don't already
|
||
have that file) and include the following:<br>
|
||
<br>
|
||
<font face="Courier">run_iptables -A common -p tcp
|
||
--tcp-flags ACK,FIN,RST ACK -j ACCEPT #Accept Acks to rebuild
|
||
connection<br>
|
||
<20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
|
||
#tracking table. <br>
|
||
. /etc/shorewall/common.def</font> </p>
|
||
</li>
|
||
|
||
</ol>
|
||
|
||
<h3 align="left">Versions >= 1.3.5</h3>
|
||
|
||
<p align="left">Some forms of pre-1.3.0 rules file syntax are no
|
||
longer supported. </p>
|
||
|
||
<p align="left">Example 1:</p>
|
||
|
||
<div align="left">
|
||
<pre> ACCEPT net loc:192.168.1.12:22 tcp 11111 - all</pre>
|
||
</div>
|
||
|
||
<p align="left">Must be replaced with:</p>
|
||
|
||
<div align="left">
|
||
<pre> DNAT net loc:192.168.1.12:22 tcp 11111</pre>
|
||
</div>
|
||
|
||
<div align="left">
|
||
<p align="left">Example 2:</p>
|
||
</div>
|
||
|
||
<div align="left">
|
||
<pre> ACCEPT loc fw::3128 tcp 80 - all</pre>
|
||
</div>
|
||
|
||
<div align="left">
|
||
<p align="left">Must be replaced with:</p>
|
||
</div>
|
||
|
||
<div align="left">
|
||
<pre> REDIRECT loc 3128 tcp 80</pre>
|
||
</div>
|
||
|
||
<h3 align="left">Version >= 1.3.2</h3>
|
||
|
||
<p align="left">The functions and versions files together with the
|
||
'firewall' symbolic link have moved from /etc/shorewall to /var/lib/shorewall.
|
||
If you have applications that access these files, those applications
|
||
should be modified accordingly.</p>
|
||
|
||
<p><font size="2"> Last updated 3/6/2003 -
|
||
<a href="support.htm">Tom Eastep</a></font> </p>
|
||
|
||
<p><font face="Trebuchet MS"><a href="copyright.htm"><font size="2">Copyright</font>
|
||
<20> <font size="2">2001, 2002, 2003 Thomas M. Eastep.</font></a></font><br>
|
||
</p>
|
||
<br>
|
||
<br>
|
||
<br>
|
||
<br>
|
||
<br>
|
||
<br>
|
||
<br>
|
||
</body>
|
||
</html>
|