forked from extern/shorewall_code
9ff5fc30c1
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@980 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
426 lines
17 KiB
XML
426 lines
17 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
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"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<article>
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<!---->
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<articleinfo>
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<title>Shorewall Errata</title>
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<authorgroup>
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<author>
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<firstname>Tom</firstname>
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<surname>Eastep</surname>
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</author>
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</authorgroup>
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<pubdate>2003-12-17</pubdate>
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<copyright>
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<year>2001-2003</year>
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<holder>Thomas M. Eastep</holder>
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</copyright>
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<legalnotice>
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<para>Permission is granted to copy, distribute and/or modify this
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document under the terms of the GNU Free Documentation License, Version
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1.2 or any later version published by the Free Software Foundation; with
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no Invariant Sections, with no Front-Cover, and with no Back-Cover
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Texts. A copy of the license is included in the section entitled
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<quote><ulink url="GnuCopyright.htm">GNU Free Documentation License</ulink></quote>.</para>
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</legalnotice>
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</articleinfo>
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<caution>
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<itemizedlist>
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<listitem>
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<para>If you use a Windows system to download a corrected script, be
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sure to run the script through <ulink
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url="http://www.megaloman.com/~hany/software/hd2u/">dos2unix</ulink>
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after you have moved it to your Linux system.</para>
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</listitem>
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<listitem>
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<para>If you are installing Shorewall for the first time and plan to
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use the .tgz and install.sh script, you can untar the archive, replace
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the 'firewall' script in the untarred directory with the one
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you downloaded below, and then run install.sh.</para>
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</listitem>
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<listitem>
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<para>When the instructions say to install a corrected firewall script
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in /usr/share/shorewall/firewall, you may rename the existing file
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before copying in the new file.</para>
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</listitem>
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<listitem>
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<para><emphasis role="bold">DO NOT INSTALL CORRECTED COMPONENTS ON A
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RELEASE EARLIER THAN THE ONE THAT THEY ARE LISTED UNDER BELOW.</emphasis>
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For example, do NOT install the 1.3.9a firewall script if you are
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running 1.3.7c.</para>
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</listitem>
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</itemizedlist>
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</caution>
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<section>
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<title>Problems in Version 1.4</title>
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<section>
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<title>Shorewall 1.4.8</title>
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<itemizedlist>
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<listitem>
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<para>When a DNAT rules specifies SNAT (e.g., when <original
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dest addr>:<SNAT addr> is given in the ORIGINAL DEST
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column), the SNAT specification is effectively ignored in some
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cases.</para>
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</listitem>
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</itemizedlist>
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<para>This problem has been corrected in <ulink
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url="http://shorewall.net/pub/shorewall/errata/1.4.8/firewall">this
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firewall script</ulink> which may be installed in
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/usr/share/shorewall/firewall as described above.</para>
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</section>
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<section>
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<title>Shorewall 1.4.7</title>
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<itemizedlist>
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<listitem>
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<para>Using some versions of 'ash' (such as from RH8) as the
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SHOREWALL_SHELL causes "shorewall [re]start" to fail with:<programlisting>    local: --limit: bad variable name
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   iptables v1.2.8: Couldn't load match `-j':/lib/iptables/libipt_-j.so:
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   cannot open shared object file: No such file or directory
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   Try `iptables -h' or 'iptables --help' for more information.</programlisting></para>
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</listitem>
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<listitem>
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<para>When more than one ICMP type is listed in a rule and your
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kernel includes multiport match support,  the firewall fails
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to start.</para>
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</listitem>
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<listitem>
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<para>Regardless of the setting of LOGUNCLEAN, the value
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LOGUNCLEAN=info was used.</para>
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</listitem>
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<listitem>
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<para>After the following error message, Shorewall was left in an
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inconsistent state:<programlisting> Error: Unable to determine the routes through interface xxx</programlisting></para>
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</listitem>
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<listitem>
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<para>When a DNAT rules specifies SNAT (e.g., when <original
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dest addr>:<SNAT addr> is given in the ORIGINAL DEST
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column), the SNAT specification is effectively ignored in some
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cases.</para>
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</listitem>
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</itemizedlist>
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<para>These problems have been corrected in <ulink
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url="http://shorewall.net/pub/shorewall/errata/1.4.7/firewall">this
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firewall script</ulink> which may be installed in
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/usr/share/shorewall/firewall as described above.</para>
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</section>
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<section>
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<title>Shorewall 1.4.6</title>
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<itemizedlist>
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<listitem>
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<para>If TC_ENABLED is set to yes in shorewall.conf then Shorewall
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would fail to start with the error "ERROR:  Traffic
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Control requires Mangle"; that problem has been corrected in
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<ulink
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url="http://shorewall.net/pub/shorewall/errata/1.4.6/firewall">this
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firewall script</ulink> which may be installed in
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/use/share/shorewall/firewall as described above. This problem is
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also corrected in bugfix release 1.4.6a.</para>
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</listitem>
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<listitem>
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<para>This problem occurs in all versions supporting traffic
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control. If a MAC address is used in the SOURCE column, an error
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occurs as follows:</para>
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<para><programlisting> iptables v1.2.8: Bad mac adress `00:08:B5:35:52:E7-d`</programlisting>For
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Shorewall 1.4.6 and 1.4.6a users, this problem has been corrected in
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<ulink
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url="http://shorewall.net/pub/shorewall/errata/1.4.6/firewall">this
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firewall script</ulink> which may be installed in
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/usr/share/shorewall/firewall as described above. For all other
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versions, you will have to edit your 'firewall' script (in
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versions 1.4.*, it is located in /usr/share/shorewall/firewall).
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Locate the function add_tcrule_() and in that function, replace this
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line:<programlisting>   r=`mac_match $source` </programlisting>with<programlisting>      r="`mac_match $source` "</programlisting>Note
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that there must be a space before the ending quote!</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.4b</title>
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<itemizedlist>
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<listitem>
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<para>Shorewall is ignoring records in /etc/shorewall/routestopped
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that have an empty second column (HOSTS). This problem may be
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corrected by installing <ulink
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url="ftp://ftp1.shorewall.net/pub/shorewall/errata/1.4.4b/firewall">this
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firewall script</ulink> in /usr/share/shorewall/firewall as
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described above.</para>
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</listitem>
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<listitem>
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<para>The INCLUDE directive doesn't work when placed in the
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/etc/shorewall/zones file. This problem may be corrected by
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installing <ulink
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url="ftp://ftp1.shorewall.net/pub/shorewall/errata/1.4.4b/functions">this
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functions script</ulink> in /usr/share/shorewall/functions.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.4-1.4.4a</title>
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<itemizedlist>
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<listitem>
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<para>Log messages are being displayed on the system console even
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though the log level for the console is set properly according to
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FAQ 16. This problem may be corrected by installing <ulink url="???">this
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firewall script</ulink> in /usr/share/shorewall/firewall as
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described above.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.4</title>
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<itemizedlist>
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<listitem>
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<para>If you have zone names that are 5 characters long, you may
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experience problems starting Shorewall because the --log-prefix in a
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logging rule is too long. Upgrade to Version 1.4.4a to fix this
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problem..</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.3</title>
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<itemizedlist>
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<listitem>
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<para>The LOGMARKER variable introduced in version 1.4.3 was
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intended to allow integration of Shorewall with Fireparse
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(http://www.firewparse.com). Unfortunately, LOGMARKER only solved
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part of the integration problem. I have implimented a new LOGFORMAT
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variable which will replace LOGMARKER which has completely solved
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this problem and is currently in production with fireparse here at
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shorewall.net. The updated files may be found at <ulink
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url="ftp://ftp1.shorewall.net/pub/shorewall/errata/1.4.3/fireparse/">ftp://ftp1.shorewall.net/pub/shorewall/errata/1.4.3/fireparse/</ulink>.
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See the 0README.txt file for details.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.2</title>
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<itemizedlist>
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<listitem>
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<para>When an 'add' or 'delete' command is executed,
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a temporary directory created in /tmp is not being removed. This
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problem may be corrected by installing <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/errata/1.4.2/firewall">this
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firewall script</ulink> in /usr/share/shorewall/firewall as
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described above.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.1a, 1.4.1 and 1.4.0</title>
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<itemizedlist>
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<listitem>
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<para>Some TCP requests are rejected in the 'common' chain
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with an ICMP port-unreachable response rather than the more
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appropriate TCP RST response. This problem is corrected in <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/errata/1.4.1a/common.def">this
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updated common.def file</ulink> which may be installed in
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/etc/shorewall/common.def.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.1</title>
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<itemizedlist>
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<listitem>
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<para>When a "shorewall check" command is executed, each
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"rule" produces the harmless additional message:<programlisting>     /usr/share/shorewall/firewall: line 2174: [: =: unary operator expected</programlisting>You
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may correct the problem by installing <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/errata/1.4.1/firewall">this
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corrected script</ulink> in /usr/share/shorewall/firewall as
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described above.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Shorewall 1.4.0</title>
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<itemizedlist>
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<listitem>
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<para>When running under certain shells Shorewall will attempt to
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create ECN rules even when /etc/shorewall/ecn is empty. You may
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either just remove /etc/shorewall/ecn or you can install <ulink
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url="http://www.shorewall.net/pub/shorewall/errata/1.4.0/firewall">this
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correct script</ulink> in /usr/share/shorewall/firewall as described
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above.</para>
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</listitem>
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</itemizedlist>
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</section>
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</section>
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<section>
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<title>Upgrade Issues</title>
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<para>The upgrade issues have moved to <ulink url="upgrade_issues.htm">a
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separate page</ulink>.</para>
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</section>
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<section>
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<title>Problem with iptables version 1.2.3</title>
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<para>There are a couple of serious bugs in iptables 1.2.3 that prevent it
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from working with Shorewall. Regrettably, RedHat released this buggy
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iptables in RedHat 7.2. </para>
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<para>I have built a <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3-3.i386.rpm">corrected
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1.2.3 rpm which you can download here</ulink>  and I have also
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built an <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/iptables-1.2.4-1.i386.rpm">iptables-1.2.4
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rpm which you can download here</ulink>. If you are currently running
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RedHat 7.1, you can install either of these RPMs before you upgrade to
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RedHat 7.2.</para>
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<para><emphasis role="bold">Update 11/9/2001:</emphasis> RedHat has
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released an iptables-1.2.4 RPM of their own which you can download from
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<ulink url="http://www.redhat.com/support/errata/RHSA-2001-144.html.">http://www.redhat.com/support/errata/RHSA-2001-144.html</ulink>.I
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have installed this RPM on my firewall and it works fine.</para>
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<para>If you would like to patch iptables 1.2.3 yourself, the patches are
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available for download. This <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3/loglevel.patch">patch</ulink>
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which corrects a problem with parsing of the --log-level specification
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while this <ulink
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url="ftp://ftp.shorewall.net/pub/shorewall/errata/iptables-1.2.3/tos.patch">patch</ulink>
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corrects a problem in handling the  TOS target.</para>
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<para>To install one of the above patches:<programlisting> cd iptables-1.2.3/extensions
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patch -p0 < the-patch-file</programlisting></para>
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</section>
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<section>
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<title>Problems with kernels >= 2.4.18 and RedHat iptables</title>
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<para>Users who use RedHat iptables RPMs and who upgrade to kernel
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2.4.18/19 may experience the following:</para>
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<blockquote>
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<programlisting># shorewall start
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Processing /etc/shorewall/shorewall.conf ...
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Processing /etc/shorewall/params ...
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Starting Shorewall...
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Loading Modules...
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Initializing...
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Determining Zones...
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Zones: net
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Validating interfaces file...
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Validating hosts file...
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Determining Hosts in Zones...
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Net Zone: eth0:0.0.0.0/0
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iptables: libiptc/libip4tc.c:380: do_check: Assertion
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`h->info.valid_hooks == (1 << 0 | 1 << 3)' failed.
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Aborted (core dumped)
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iptables: libiptc/libip4tc.c:380: do_check: Assertion
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`h->info.valid_hooks == (1 << 0 | 1 << 3)' failed.
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Aborted (core dumped)</programlisting>
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</blockquote>
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<para>The RedHat iptables RPM is compiled with debugging enabled but the
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user-space debugging code was not updated to reflect recent changes in the
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Netfilter 'mangle' table. You can correct the problem by
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installing <ulink
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url="http://www.shorewall.net/pub/shorewall/iptables-1.2.5-1.i386.rpm">this
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iptables RPM</ulink>. If you are already running a 1.2.5 version of
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iptables, you will need to specify the --oldpackage option to rpm (e.g.,
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"iptables -Uvh --oldpackage iptables-1.2.5-1.i386.rpm").</para>
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</section>
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<section>
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<title>Problems with iptables version 1.2.7 and MULTIPORT=Yes</title>
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<para>The iptables 1.2.7 release of iptables has made an incompatible
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change to the syntax used to specify multiport match rules; as a
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consequence, if you install iptables 1.2.7 you must be running Shorewall
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1.3.7a or later or:</para>
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<itemizedlist>
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<listitem>
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<para>set MULTIPORT=No in /etc/shorewall/shorewall.conf; or</para>
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</listitem>
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<listitem>
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<para>If you are running Shorewall 1.3.6 you may install <ulink
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url="http://www.shorewall.net/pub/shorewall/errata/1.3.6/firewall">this
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firewall script</ulink> in /usr/lib/shorewall/firewall as described
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above.</para>
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</listitem>
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</itemizedlist>
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</section>
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<section>
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<title>Problems with RH Kernel 2.4.18-10 and NAT</title>
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<para>/etc/shorewall/nat entries of the following form will result in
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Shorewall being unable to start:</para>
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<programlisting> #EXTERNAL       INTERFACE       INTERNAL        ALL INTERFACES          LOCAL
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192.0.2.22    eth0    192.168.9.22   yes     yes
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#LAST LINE -- ADD YOUR ENTRIES ABOVE THIS LINE -- DO NOT REMOVE</programlisting>
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<para> Error message is:</para>
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<programlisting> Setting up NAT...
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iptables: Invalid argument
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Terminated</programlisting>
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<para>The solution is to put "no" in the LOCAL column. Kernel
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support for LOCAL=yes has never worked properly and 2.4.18-10 has disabled
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it. The 2.4.19 kernel contains corrected support under a new kernel
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configuraiton option; see <ulink
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url="http://www.shorewall.net/Documentation.htm#NAT">http://www.shorewall.net/Documentation.htm#NAT</ulink>.</para>
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</section>
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<section>
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<title>Problems with RH Kernels after 2.4.20-9 and REJECT (also applies to
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2.4.21-RC1)</title>
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<para> Beginning with errata kernel 2.4.20-13.9, "REJECT --reject-with
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tcp-reset" is broken. The symptom most commonly seen is that REJECT
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rules act just like DROP rules when dealing with TCP. A kernel patch and
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precompiled modules to fix this problem are available at <ulink
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url="ftp://ftp1.shorewall.net/pub/shorewall/errata/kernel">ftp://ftp1.shorewall.net/pub/shorewall/errata/kernel</ulink>.</para>
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</section>
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</article> |