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shorewall_code/Shorewall-docs/errata.htm
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<head>
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<title>Shorewall 1.3 Errata</title>
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<tr>
<td width="100%">
<h1 align="center"><font color="#ffffff">Shorewall Errata/Upgrade Issues</font></h1>
</td>
</tr>
</tbody>
</table>
<p align="center"> <b><u>IMPORTANT</u></b></p>
<ol>
<li>
<p align="left"> <b><u>I</u>f you use a Windows system to download
a corrected script, be sure to run the script through <u>
<a href="http://www.megaloman.com/%7Ehany/software/hd2u/"
style="text-decoration: none;"> dos2unix</a></u> after you have moved
it to your Linux system.</b></p>
</li>
<li>
<p align="left"> <b>If you are installing Shorewall for the first
time and plan to use the .tgz and install.sh script, you can untar
the archive, replace the 'firewall' script in the untarred directory
with the one you downloaded below, and then run install.sh.</b></p>
</li>
<li>
<p align="left"> <b>If you are running a Shorewall version earlier
than 1.3.11, when the instructions say to install a corrected firewall
script in /etc/shorewall/firewall, /usr/lib/shorewall/firewall
or /var/lib/shorewall/firewall, use the 'cp' (or 'scp') utility to overwrite
the existing file. DO NOT REMOVE OR RENAME THE OLD /etc/shorewall/firewall
or /var/lib/shorewall/firewall before you do that. /etc/shorewall/firewall
and /var/lib/shorewall/firewall are symbolic links that point
to the 'shorewall' file used by your system initialization scripts
to start Shorewall during boot. It is that file that must be
overwritten with the corrected script. Beginning with Shorewall
1.3.11, you may rename the existing file before copying in the new file.</b></p>
</li>
<li>
<p align="left"><b><font color="#ff0000">DO NOT INSTALL CORRECTED COMPONENTS
ON A RELEASE EARLIER THAN THE ONE THAT THEY ARE LISTED UNDER BELOW. For
example, do NOT install the 1.3.9a firewall script if you are running
1.3.7c.</font></b><br>
</p>
</li>
</ol>
<ul>
<li><b><a href="upgrade_issues.htm">Upgrade Issues</a></b></li>
<li> <b><a href="#V1.3">Problems
in Version 1.3</a></b></li>
<li> <b><a
href="errata_2.htm">Problems in Version 1.2</a></b></li>
<li> <b><font
color="#660066"> <a href="errata_1.htm">Problems in Version 1.1</a></font></b></li>
<li> <b><font
color="#660066"><a href="#iptables"> Problem with iptables version 1.2.3
on RH7.2</a></font></b></li>
<li> <b><a href="#Debug">Problems
with kernels &gt;= 2.4.18 and RedHat iptables</a></b></li>
<li><b><a href="#SuSE">Problems installing/upgrading
RPM on SuSE</a></b></li>
<li><b><a href="#Multiport">Problems with iptables version
1.2.7 and MULTIPORT=Yes</a></b></li>
<li><b><a href="#NAT">Problems with RH Kernel 2.4.18-10 and
NAT</a></b><br>
</li>
</ul>
<hr>
<h2 align="left"><a name="V1.3"></a>Problems in Version 1.3</h2>
<h3>Version 1.3.13</h3>
<ul>
<li>The 'shorewall add' command produces an error message referring to
'find_interfaces_by_maclist'.</li>
<li>The 'shorewall delete' command can leave behind undeleted rules.<br>
</li>
</ul>
Both problems are corrected by <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.13/firewall">this
firewall script</a> which may be installed in /usr/lib/shorewall as described
above.<br>
<ul>
<li>VLAN interface names of the form "eth<i>n</i>.<i>m</i>" (e.g., eth0.1)
are not supported in this version or in 1.3.12. If you need such support,
post on the users list and I can provide you with a patched version.<br>
</li>
</ul>
<h3>Version 1.3.12</h3>
<ul>
<li>If RFC_1918_LOG_LEVEL is set to anything but ULOG, the effect is
the same as if RFC_1918_LOG_LEVEL=info had been specified. The problem is
corrected by <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.12/firewall">this
firewall script</a> which may be installed in /usr/lib/shorewall as described
above.</li>
<li>VLAN interface names of the form "eth<i>n</i>.<i>m</i>" (e.g., eth0.1)
are not supported in this version or in 1.3.13. If you need such support,
post on the users list and I can provide you with a patched version.<br>
</li>
</ul>
<h3>Version 1.3.12 LRP</h3>
<ul>
<li>The .lrp was missing the /etc/shorewall/routestopped file -- a
new lrp (shorwall-1.3.12a.lrp) has been released which corrects this problem.<br>
</li>
</ul>
<h3>Version 1.3.11a</h3>
<ul>
<li><a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.11/rfc1918">This
copy of /etc/shorewall/rfc1918</a> reflects the recent allocation of 82.0.0.0/8.<br>
</li>
</ul>
<h3>Version 1.3.11</h3>
<ul>
<li>When installing/upgrading using the .rpm, you may receive the
following warnings:<br>
<br>
<20><><EFBFBD><EFBFBD> user teastep does not exist - using root<br>
<20><><EFBFBD><EFBFBD> group teastep does not exist - using root<br>
<br>
These warnings are harmless and may be ignored. Users downloading
the .rpm from shorewall.net or mirrors should no longer see these warnings
as the .rpm you will get from there has been corrected.</li>
<li>DNAT rules that exclude a source subzone (SOURCE column contains
! followed by a sub-zone list) result in an error message and Shorewall
fails to start.<br>
<br>
Install <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.11/firewall">this
corrected script</a> in /usr/lib/shorewall/firewall to correct this problem.
Thanks go to Roger Aich who analyzed this problem and provided a fix.<br>
<br>
This problem is corrected in version 1.3.11a.<br>
</li>
</ul>
<h3>Version 1.3.10</h3>
<ul>
<li>If you experience problems connecting to a PPTP server running
on your firewall and you have a 'pptpserver' entry in /etc/shorewall/tunnels,
<a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.10/firewall">this
version of the firewall script</a> may help. Please report any cases where
installing this script in /usr/lib/shorewall/firewall solved your connection
problems. Beginning with version 1.3.10, it is safe to save the old version
of /usr/lib/shorewall/firewall before copying in the new one since /usr/lib/shorewall/firewall
is the real script now and not just a symbolic link to the real script.<br>
</li>
</ul>
<h3>Version 1.3.9a</h3>
<ul>
<li> If entries are used in /etc/shorewall/hosts and MERGE_HOSTS=No
then the following message appears during "shorewall [re]start":</li>
</ul>
<pre> recalculate_interfacess: command not found<br></pre>
<blockquote> The updated firewall script at <a
href="ftp://www.shorewall.net/pub/shorewall/errata/1.3.9/firewall"
target="_top">ftp://www.shorewall.net/pub/shorewall/errata/1.3.9/firewall</a>
corrects this problem.Copy the script to /usr/lib/shorewall/firewall
as described above.<br>
</blockquote>
<blockquote> Alternatively, edit /usr/lob/shorewall/firewall and change the
single occurence (line 483 in version 1.3.9a) of 'recalculate_interefacess'
to 'recalculate_interface'. <br>
</blockquote>
<ul>
<li>The installer (install.sh) issues a misleading message "Common
functions installed in /var/lib/shorewall/functions" whereas the file
is installed in /usr/lib/shorewall/functions. The installer also performs
incorrectly when updating old configurations that had the file /etc/shorewall/functions.
<a
href="ftp://ftp.shorewall.net/pub/shorewall/errata/1.3.9/install.sh">Here
is an updated version that corrects these problems.<br>
</a></li>
</ul>
<h3>Version 1.3.9</h3>
<b>TUNNELS Broken in 1.3.9!!! </b>There is an updated firewall
script at <a
href="ftp://www.shorewall.net/pub/shorewall/errata/1.3.9/firewall"
target="_top">ftp://www.shorewall.net/pub/shorewall/errata/1.3.9/firewall</a>
-- copy that file to /usr/lib/shorewall/firewall as described above.<br>
<br>
Version 1.3.8
<ul>
<li> Use of shell variables in the LOG LEVEL or SYNPARMS
columns of the policy file doesn't work.</li>
<li>A DNAT rule with the same original and new IP addresses
but with different port numbers doesn't work (e.g., "DNAT loc dmz:10.1.1.1:24
tcp 25 - 10.1.1.1")<br>
</li>
</ul>
Installing <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.8/firewall">
this corrected firewall script</a> in /var/lib/shorewall/firewall
as described above corrects these problems.
<h3>Version 1.3.7b</h3>
<p>DNAT rules where the source zone is 'fw' ($FW)
result in an error message. Installing
<a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.7/firewall">
this corrected firewall script</a> in /var/lib/shorewall/firewall
as described above corrects this problem.</p>
<h3>Version 1.3.7a</h3>
<p>"shorewall refresh" is not creating the proper
rule for FORWARDPING=Yes. Consequently, after
"shorewall refresh", the firewall will not forward
icmp echo-request (ping) packets. Installing
<a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.7/firewall">
this corrected firewall script</a> in /var/lib/shorewall/firewall
as described above corrects this problem.</p>
<h3>Version &lt;= 1.3.7a</h3>
<p>If "norfc1918" and "dhcp" are both specified as
options on a given interface then RFC 1918
checking is occurring before DHCP checking. This
means that if a DHCP client broadcasts using an
RFC 1918 source address, then the firewall will
reject the broadcast (usually logging it). This
has two problems:</p>
<ol>
<li>If the firewall is
running a DHCP server, the client
won't be able to obtain an IP address
lease from that server.</li>
<li>With this order of
checking, the "dhcp" option cannot
be used as a noise-reduction measure
where there are both dynamic and static
clients on a LAN segment.</li>
</ol>
<p> <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.7/firewall">
This version of the 1.3.7a firewall script </a>
corrects the problem. It must be installed
in /var/lib/shorewall as described
above.</p>
<h3>Version 1.3.7</h3>
<p>Version 1.3.7 dead on arrival -- please use
version 1.3.7a and check your version against
these md5sums -- if there's a difference, please
download again.</p>
<pre> d2fffb7fb99bcc6cb047ea34db1df10 shorewall-1.3.7a.tgz<br> 6a7fd284c8685b2b471a2f47b469fb94 shorewall-1.3.7a-1.noarch.rpm<br> 3decd14296effcff16853106771f7035 shorwall-1.3.7a.lrp</pre>
<p>In other words, type "md5sum &lt;<i>whatever package you downloaded</i>&gt;
and compare the result with what you see above.</p>
<p>I'm embarrassed to report that 1.2.7 was also DOA -- maybe I'll skip the
.7 version in each sequence from now on.</p>
<h3 align="left">Version 1.3.6</h3>
<ul>
<li>
<p align="left">If ADD_SNAT_ALIASES=Yes is specified in /etc/shorewall/shorewall.conf,
an error occurs when the firewall script attempts to add
an SNAT alias. </p>
</li>
<li>
<p align="left">The <b>logunclean </b>and <b>dropunclean</b> options
cause errors during startup when Shorewall is run with iptables
1.2.7. </p>
</li>
</ul>
<p align="left">These problems are fixed in <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.6/firewall">
this correct firewall script</a> which must be installed in
/var/lib/shorewall/ as described above. These problems are also
corrected in version 1.3.7.</p>
<h3 align="left">Two-interface Samples 1.3.6 (file two-interfaces.tgz)</h3>
<p align="left">A line was inadvertently deleted from the "interfaces
file" -- this line should be added back in if the version that you
downloaded is missing it:</p>
<p align="left">net<EFBFBD><EFBFBD><EFBFBD> eth0<68><30><EFBFBD> detect<63><74><EFBFBD> routefilter,dhcp,norfc1918</p>
<p align="left">If you downloaded two-interfaces-a.tgz then the above
line should already be in the file.</p>
<h3 align="left">Version 1.3.5-1.3.5b</h3>
<p align="left">The new 'proxyarp' interface option doesn't work :-(
This is fixed in <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.5/firewall">
this corrected firewall script</a> which must be installed in
/var/lib/shorewall/ as described above.</p>
<h3 align="left">Versions 1.3.4-1.3.5a</h3>
<p align="left">Prior to version 1.3.4, host file entries such as the
following were allowed:</p>
<div align="left">
<pre> adm eth0:1.2.4.5,eth0:5.6.7.8</pre>
</div>
<div align="left">
<p align="left">That capability was lost in version 1.3.4 so that it is only
possible to<74> include a single host specification on each line.
This problem is corrected by <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.5a/firewall">this
modified 1.3.5a firewall script</a>. Install the script in /var/lib/pub/shorewall/firewall
as instructed above.</p>
</div>
<div align="left">
<p align="left">This problem is corrected in version 1.3.5b.</p>
</div>
<h3 align="left">Version 1.3.5</h3>
<p align="left">REDIRECT rules are broken in this version. Install
<a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.5/firewall">
this corrected firewall script</a> in /var/lib/pub/shorewall/firewall
as instructed above. This problem is corrected in version
1.3.5a.</p>
<h3 align="left">Version 1.3.n, n &lt; 4</h3>
<p align="left">The "shorewall start" and "shorewall restart" commands
to not verify that the zones named in the /etc/shorewall/policy file
have been previously defined in the /etc/shorewall/zones file.
The "shorewall check" command does perform this verification so
it's a good idea to run that command after you have made configuration
changes.</p>
<h3 align="left">Version 1.3.n, n &lt; 3</h3>
<p align="left">If you have upgraded from Shorewall 1.2 and after
"Activating rules..." you see the message: "iptables: No chains/target/match
by that name" then you probably have an entry in /etc/shorewall/hosts
that specifies an interface that you didn't include in
/etc/shorewall/interfaces. To correct this problem, you
must add an entry to /etc/shorewall/interfaces. Shorewall 1.3.3 and
later versions produce a clearer error message in this case.</p>
<h3 align="left">Version 1.3.2</h3>
<p align="left">Until approximately 2130 GMT on 17 June 2002, the
download sites contained an incorrect version of the .lrp file. That
file can be identified by its size (56284 bytes). The correct version
has a size of 38126 bytes.</p>
<ul>
<li>The code to detect a duplicate interface
entry in /etc/shorewall/interfaces contained a typo that
prevented it from working correctly. </li>
<li>"NAT_BEFORE_RULES=No" was broken; it behaved
just like "NAT_BEFORE_RULES=Yes".</li>
</ul>
<p align="left">Both problems are corrected in <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.2/firewall">
this script</a> which should be installed in <b><u>/var/lib/shorewall</u></b>
as described above.</p>
<ul>
<li>
<p align="left">The IANA have just announced the allocation of subnet
221.0.0.0/8. This <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.2/rfc1918">
updated rfc1918</a> file reflects that allocation.</p>
</li>
</ul>
<h3 align="left">Version 1.3.1</h3>
<ul>
<li>TCP SYN packets may be double counted when
LIMIT:BURST is included in a CONTINUE or ACCEPT policy (i.e.,
each packet is sent through the limit chain twice).</li>
<li>An unnecessary jump to the policy chain
is sometimes generated for a CONTINUE policy.</li>
<li>When an option is given for more than one
interface in /etc/shorewall/interfaces then depending
on the option, Shorewall may ignore all but the first appearence
of the option. For example:<br>
<br>
net<65><74><EFBFBD> eth0<68><30><EFBFBD> dhcp<br>
loc<6F><63><EFBFBD> eth1<68><31><EFBFBD> dhcp<br>
<br>
Shorewall will ignore the 'dhcp' on eth1.</li>
<li>Update 17 June 2002 - The bug described
in the prior bullet affects the following options: dhcp,
dropunclean, logunclean, norfc1918, routefilter, multi,
filterping and noping. An additional bug has been found
that affects only the 'routestopped' option.<br>
<br>
Users who downloaded the corrected script prior
to 1850 GMT today should download and install the corrected
script again to ensure that this second problem is corrected.</li>
</ul>
<p align="left">These problems are corrected in <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.1/firewall">
this firewall script</a> which should be installed in /etc/shorewall/firewall
as described above.</p>
<h3 align="left">Version 1.3.0</h3>
<ul>
<li>Folks who downloaded 1.3.0 from the links
on the download page before 23:40 GMT, 29 May 2002 may
have downloaded 1.2.13 rather than 1.3.0. The "shorewall
version" command will tell you which version that you
have installed.</li>
<li>The documentation NAT.htm file uses non-existent
wallpaper and bullet graphic files. The <a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.0/NAT.htm">
corrected version is here</a>.</li>
</ul>
<hr>
<h2 align="left"><a name="Upgrade"></a>Upgrade Issues</h2>
<p align="left">The upgrade issues have moved to <a
href="upgrade_issues.htm">a separate page</a>.</p>
<hr>
<h3 align="left"><a name="iptables"></a><font color="#660066"> Problem with
iptables version 1.2.3</font></h3>
<blockquote>
<p align="left">There are a couple of serious bugs in iptables 1.2.3 that
prevent it from working with Shorewall. Regrettably, RedHat
released this buggy iptables in RedHat 7.2.<2E></p>
<p align="left"> I have built a <a
href="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3-3.i386.rpm">
corrected 1.2.3 rpm which you can download here</a><EFBFBD> and I have
also built an <a
href="ftp://ftp.shorewall.net/pub/shorewall/iptables-1.2.4-1.i386.rpm">
iptables-1.2.4 rpm which you can download here</a>. If you are currently
running RedHat 7.1, you can install either of these RPMs
<b><u>before</u> </b>you upgrade to RedHat 7.2.</p>
<p align="left"><font color="#ff6633"><b>Update 11/9/2001: </b></font>RedHat
has released an iptables-1.2.4 RPM of their own which you can download
from<font color="#ff6633"> <a
href="http://www.redhat.com/support/errata/RHSA-2001-144.html">http://www.redhat.com/support/errata/RHSA-2001-144.html</a>.
</font>I have installed this RPM on my firewall and it works
fine.</p>
<p align="left">If you would like to patch iptables 1.2.3 yourself,
the patches are available for download. This <a
href="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3/loglevel.patch">patch</a>
which corrects a problem with parsing of the --log-level specification
while this <a
href="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3/tos.patch">patch</a>
corrects a problem in handling the<68> TOS target.</p>
<p align="left">To install one of the above patches:</p>
<ul>
<li>cd iptables-1.2.3/extensions</li>
<li>patch -p0 &lt; <i>the-patch-file</i></li>
</ul>
</blockquote>
<h3><a name="Debug"></a>Problems with kernels &gt;= 2.4.18
and RedHat iptables</h3>
<blockquote>
<p>Users who use RedHat iptables RPMs and who upgrade to kernel 2.4.18/19
may experience the following:</p>
<blockquote>
<pre># shorewall start<br>Processing /etc/shorewall/shorewall.conf ...<br>Processing /etc/shorewall/params ...<br>Starting Shorewall...<br>Loading Modules...<br>Initializing...<br>Determining Zones...<br>Zones: net<br>Validating interfaces file...<br>Validating hosts file...<br>Determining Hosts in Zones...<br>Net Zone: eth0:0.0.0.0/0<br>iptables: libiptc/libip4tc.c:380: do_check: Assertion<br>`h-&gt;info.valid_hooks == (1 &lt;&lt; 0 | 1 &lt;&lt; 3)' failed.<br>Aborted (core dumped)<br>iptables: libiptc/libip4tc.c:380: do_check: Assertion<br>`h-&gt;info.valid_hooks == (1 &lt;&lt; 0 | 1 &lt;&lt; 3)' failed.<br>Aborted (core dumped)<br></pre>
</blockquote>
<p>The RedHat iptables RPM is compiled with debugging enabled but the
user-space debugging code was not updated to reflect recent changes in
the Netfilter 'mangle' table. You can correct the problem by installing
<a
href="http://www.shorewall.net/pub/shorewall/iptables-1.2.5-1.i386.rpm">
this iptables RPM</a>. If you are already running a 1.2.5 version
of iptables, you will need to specify the --oldpackage option to
rpm (e.g., "iptables -Uvh --oldpackage iptables-1.2.5-1.i386.rpm").</p>
</blockquote>
<h3><a name="SuSE"></a>Problems installing/upgrading
RPM on SuSE</h3>
<p>If you find that rpm complains about a conflict
with kernel &lt;= 2.2 yet you have a 2.4 kernel
installed, simply use the "--nodeps" option to
rpm.</p>
<p>Installing: rpm -ivh --nodeps <i>&lt;shorewall rpm&gt;</i></p>
<p>Upgrading: rpm -Uvh --nodeps <i>&lt;shorewall rpm&gt;</i></p>
<h3><a name="Multiport"></a><b>Problems with
iptables version 1.2.7 and MULTIPORT=Yes</b></h3>
<p>The iptables 1.2.7 release of iptables has made
an incompatible change to the syntax used to
specify multiport match rules; as a consequence,
if you install iptables 1.2.7 you must be running
Shorewall 1.3.7a or later or:</p>
<ul>
<li>set MULTIPORT=No in
/etc/shorewall/shorewall.conf; or </li>
<li>if you are running
Shorewall 1.3.6 you may install
<a
href="http://www.shorewall.net/pub/shorewall/errata/1.3.6/firewall">
this firewall script</a> in /var/lib/shorewall/firewall
as described above.</li>
</ul>
<h3><a name="NAT"></a>Problems with RH Kernel 2.4.18-10 and NAT<br>
</h3>
/etc/shorewall/nat entries of the following form will result
in Shorewall being unable to start:<br>
<br>
<pre>#EXTERNAL<41><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD> INTERFACE<43><45><EFBFBD><EFBFBD><EFBFBD><EFBFBD> INTERNAL<41><4C><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ALL INTERFACES<45><53><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> LOCAL<br>192.0.2.22<EFBFBD><EFBFBD><EFBFBD> eth0<68><30><EFBFBD> 192.168.9.22<EFBFBD><EFBFBD> yes<65><73><EFBFBD><EFBFBD> yes<br>#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</pre>
Error message is:<br>
<pre>Setting up NAT...<br>iptables: Invalid argument<br>Terminated<br><br></pre>
The solution is to put "no" in the LOCAL column. Kernel support
for LOCAL=yes has never worked properly and 2.4.18-10 has disabled
it. The 2.4.19 kernel contains corrected support under a new kernel
configuraiton option; see <a href="Documentation.htm#NAT">http://www.shorewall.net/Documentation.htm#NAT</a><br>
<p><font size="2"> Last updated 1/25/2003 -
<a href="support.htm">Tom Eastep</a></font> </p>
<p><a href="copyright.htm"><font size="2">Copyright</font> <20> <font
size="2">2001, 2002, 2003 Thomas M. Eastep.</font></a><br>
</p>
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