mirror of
https://gitlab.com/shorewall/code.git
synced 2024-11-09 01:04:06 +01:00
f57e5a6cfa
git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@6866 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
546 lines
20 KiB
XML
546 lines
20 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE article PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
|
|
<article>
|
|
<!--$Id$-->
|
|
|
|
<articleinfo>
|
|
<title>Anatomy of Shorewall 4.0</title>
|
|
|
|
<authorgroup>
|
|
<author>
|
|
<firstname>Tom</firstname>
|
|
|
|
<surname>Eastep</surname>
|
|
</author>
|
|
</authorgroup>
|
|
|
|
<pubdate><?dbtimestamp format="Y/m/d"?></pubdate>
|
|
|
|
<copyright>
|
|
<year>2007</year>
|
|
|
|
<holder>Thomas M. Eastep</holder>
|
|
</copyright>
|
|
|
|
<legalnotice>
|
|
<para>Permission is granted to copy, distribute and/or modify this
|
|
document under the terms of the GNU Free Documentation License, Version
|
|
1.2 or any later version published by the Free Software Foundation; with
|
|
no Invariant Sections, with no Front-Cover, and with no Back-Cover
|
|
Texts. A copy of the license is included in the section entitled
|
|
<quote><ulink url="GnuCopyright.htm">GNU Free Documentation
|
|
License</ulink></quote>.</para>
|
|
</legalnotice>
|
|
</articleinfo>
|
|
|
|
<section id="Products">
|
|
<title>Products</title>
|
|
|
|
<para>Shorewall 4.0 consists of four packages.</para>
|
|
|
|
<orderedlist>
|
|
<listitem>
|
|
<para><emphasis role="bold">Shorewall-common</emphasis>. This package
|
|
must be installed on at least one system in your network. That system
|
|
must also have Shorewall-shell and/or Shorewall-perl installed.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><emphasis role="bold">Shorewall-shell</emphasis>. This package
|
|
includes the legacy Shorewall configuration compiler written in Bourne
|
|
Shell. This compiler is very portable but suffers from performance
|
|
problems and has become hard to maintain.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><emphasis role="bold">Shorewall-perl</emphasis>. An alternative
|
|
to Shorewall-shell written in the Perl language. This compiler is
|
|
highly portable to those Unix-like platforms that support Perl
|
|
(including Cygwin) and is the compiler of choice for new Shorewall
|
|
installations.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><emphasis role="bold">Shorewall-lite</emphasis>. Shorewall
|
|
allows for central administration of multiple firewalls through use of
|
|
Shorewall lite. The full Shorewall product (along with Shorewall-shell
|
|
and/or Shorewall-perl) are installed on a central administrative
|
|
system where compiled Shorewall scripts are generated. These scripts
|
|
are copied to the firewall systems where they run under the control of
|
|
Shorewall-lite.</para>
|
|
</listitem>
|
|
</orderedlist>
|
|
</section>
|
|
|
|
<section id="Shorewall">
|
|
<title>Shorewall-common</title>
|
|
|
|
<para>The Shorewall-common package includes a large number of files which
|
|
are installed in /<filename class="directory">sbin</filename>, <filename
|
|
class="directory">/usr/share/shorewall</filename>, <filename
|
|
class="directory">/etc/shorewall</filename>,
|
|
<filename>/etc/init.d</filename> and <filename
|
|
class="directory">/var/lilb/shorewall/</filename>. These are described in
|
|
the sub-sections that follow.</para>
|
|
|
|
<section id="sbin">
|
|
<title>/sbin</title>
|
|
|
|
<para>The <filename>/sbin/shorewall</filename> shell program is use to
|
|
interact with Shorewall. See <ulink
|
|
url="manpages/shorewall.html">shorewall</ulink>(8).</para>
|
|
</section>
|
|
|
|
<section id="share-shorewall">
|
|
<title>/usr/share/shorewall</title>
|
|
|
|
<para>The bulk of Shorewall is installed here.</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename>action.template</filename> - template file for
|
|
creating <ulink url="Actions.html">actions</ulink>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>action.*</filename> - standard Shorewall
|
|
actions.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>actions.std</filename> - file listing the standard
|
|
actions.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename class="directory">configfiles</filename> - A
|
|
directory containing configuration files to copy to create a <ulink
|
|
url="CompiledPrograms.html#Lite">Shorewall-lite export
|
|
directory.</ulink></para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename><filename>configpath</filename></filename> - A file
|
|
containing distribution-specific path assignments.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>firewall</filename> - A shell program that handles
|
|
the <command>add</command> and <command>delete</command> commands
|
|
(see <ulink url="manpages/shorewall.html">shorewall</ulink>(8)). It
|
|
also handles the <command>stop</command> and
|
|
<command>clear</command> commands when there is no current compiled
|
|
firewall script on the system.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename class="symlink">functions</filename> - A sybolic
|
|
link to <filename>lib.base</filename> that provides for
|
|
compatibility with older versions of Shorewall.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename class="symlink">init</filename> - A symbolic link to
|
|
the init script (usually
|
|
<filename>/etc/init.d/shorewall</filename>).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>lib.*</filename> - Shell function libraries used by
|
|
the other shell programs.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>macro.*</filename> - The standard Shorewall <ulink
|
|
url="Macros.html">macros</ulink>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>modules</filename> - File that drives the loading of
|
|
Netfilter kernel modules. May be overridden by
|
|
<filename>/etc/shorewall/modules</filename>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>version</filename> - A file containing the currently
|
|
install version of Shorewall.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>wait4ifup</filename> - A shell program that <ulink
|
|
url="shorewall_extension_scripts.htm">extension scripts</ulink> can
|
|
use to delay until a network interface is available.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
|
|
<section id="shorewall">
|
|
<title>/etc/shorewall</title>
|
|
|
|
<para>This is where the modifiable configuration files are
|
|
installed.</para>
|
|
</section>
|
|
|
|
<section id="init">
|
|
<title>/etc/init.d or /etc/rc.d (depends on distribution)</title>
|
|
|
|
<para>An init script is installed here. Depending on the distribution,
|
|
it is named <filename>shorewall</filename> or
|
|
<filename>rc.firewall</filename>.</para>
|
|
</section>
|
|
|
|
<section id="var">
|
|
<title>/var/lib/shorewall</title>
|
|
|
|
<para>Shorewall doesn't install any files in this directory but rather
|
|
uses the directory for storing state information. This directory may be
|
|
relocated using <ulink
|
|
url="manpages/shorewall-vardir.html">shorewall-vardir</ulink>(5).</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename>chains</filename> - If DYNAMIC_ZONES=Yes in <ulink
|
|
url="manpages/shorewall.conf.html">shorewall.conf</ulink>(5), this
|
|
file contains information used by the <command>add</command> and
|
|
<command>delete</command> commands (see <ulink
|
|
url="manpages/shorewall.html">shorewall</ulink>(8)).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.iptables-restore-input </filename>- The file passed
|
|
as input to the iptables-restore program to initialize the firewall
|
|
during the last <command>start</command> or
|
|
<command>restart</command> command (see <ulink
|
|
url="manpages/shorewall.html">shorewall</ulink>(8)).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.modules</filename> - The contents of the modules
|
|
file used during the last <command>start</command> or
|
|
<command>restart</command> command (see <ulink
|
|
url="manpages/shorewall.html">shorewall</ulink>(8) for command
|
|
information).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.modulesdir</filename> - The MODULESDIR setting
|
|
(<ulink
|
|
url="manpages/shorewall.conf.html">shorewall.conf</ulink>(5)) at the
|
|
last <command>start</command> or <command>restart.</command></para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>nat</filename> - This unfortunately-named file
|
|
records the IP addresses added by ADD_SNAT_ALIASES=Yes and
|
|
ADD_IP_ALIASES=Yes in <ulink
|
|
url="manpages/shorewall.conf.html">shorewall.conf</ulink>(5).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>proxyarp</filename> - Records the arp entries added
|
|
by entries in <ulink
|
|
url="manpages/shorewall-proxyarp.html">shorewall-proxyarp</ulink>(5).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.refresh</filename> - The shell program that
|
|
performed the last successful <command>refresh</command>
|
|
command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.restart</filename> - The shell program that
|
|
performed the last successful <command>restart</command>
|
|
command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>restore</filename> - The default shell program used
|
|
to execute <command>restore</command> commands.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.restore</filename> - The shell program that
|
|
performed the last successful <command>refresh, restart</command> or
|
|
<command>start</command> command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>save</filename> - File created by the
|
|
<command>save</command> command and used to restore the dynamic
|
|
blacklist during <command>start/restart</command>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.start</filename> - The shell program that performed
|
|
the last successful <command>start</command> command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>state</filename> - Records the current firewall
|
|
state.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>zones</filename> - Records the current zone
|
|
contents.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
</section>
|
|
|
|
<section id="Shorewall-shell">
|
|
<title>Shorewall-shell</title>
|
|
|
|
<para>The Shorewall-shell product installs all of its files in
|
|
/usr/share/<filename class="directory">shorewall-shell</filename>.</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename>compiler</filename> - The configuration compiler shell
|
|
program.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>lib.*</filename> - Shell function libraries used by
|
|
the compiler. On embedded systems, only a sub-set of the available
|
|
libraries may be installed as a space-saving measure.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>prog.*</filename> - Shell program fragments used as
|
|
input to the compiler.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>version</filename> - A file containing the currently
|
|
install version of Shorewall-shell.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
|
|
<section id="Shorewall-perl">
|
|
<title>Shorewall-perl</title>
|
|
|
|
<para>The Shorewall-perl product installs all of its files in
|
|
/usr/share/<filename class="directory">shorewall-perl</filename>.</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename>buildports.pl</filename> - A Perl program that builds
|
|
the Shorewall/Ports.pm module during installation.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>compiler.pl</filename> - The configuration compiler
|
|
perl program.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>prog.*</filename> - Shell program fragments used as
|
|
input to the compiler.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename class="directory">Shorewall</filename> - Directory
|
|
containing the Shorewall Perl modules used by the compiler.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>version</filename> - A file containing the currently
|
|
install version of Shorewall-shell.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
|
|
<section id="Shorewall-lite">
|
|
<title>Shorewall-lite</title>
|
|
|
|
<para>The Shorewall-lite product includes files installed in /<filename
|
|
class="directory">sbin</filename>, <filename
|
|
class="directory">/usr/share/shorewall-lite</filename>, /etc/<filename
|
|
class="directory">shorewall-lite</filename>,
|
|
<filename>/etc/init.d</filename> and <filename
|
|
class="directory">/var/lilb/shorewall/</filename>. These are described in
|
|
the sub-sections that follow.</para>
|
|
|
|
<section id="sbin-lite">
|
|
<title>/sbin</title>
|
|
|
|
<para>The <filename>/sbin/shorewall-lite</filename> shell program is use
|
|
to interact with Shorewall lite. See <ulink
|
|
url="manpages/shorewall-lite.html">shorewall-lite</ulink>(8).</para>
|
|
</section>
|
|
|
|
<section id="init-lite">
|
|
<title>/etc/init.d or /etc/rc.d (depends on distribution)</title>
|
|
|
|
<para>An init script is installed here. Depending on the distribution,
|
|
it is named <filename>shorewall-lite</filename> or
|
|
<filename>rc.firewall</filename>.</para>
|
|
</section>
|
|
|
|
<section id="shorewall-lite">
|
|
<title>/etc/shorewall-lite</title>
|
|
|
|
<para>This is where the modifiable configuration files are
|
|
installed.</para>
|
|
</section>
|
|
|
|
<section id="share-lite">
|
|
<title>/usr/share/shorewall-lite</title>
|
|
|
|
<para>The bulk of Shorewall-lite is installed here.</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename><filename>configpath</filename></filename> - A file
|
|
containing distribution-specific path assignments.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename class="symlink">functions</filename> - A sybolic
|
|
link to <filename>lib.base</filename> that provides for
|
|
compatibility with older versions of Shorewall.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>lib.*</filename> - Shell function libraries used by
|
|
the other shell programs. These are copies of the corresponding
|
|
libraries in the Shorewall product.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>modules</filename> - File that drives the loading of
|
|
Netfilter kernel modules. May be overridden by
|
|
<filename>/etc/shorewall-lite/modules</filename>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>shorecap</filename> - A shell program used for
|
|
generating capabilities files. See the <ulink
|
|
url="CompiledPrograms.html#Lite">Shorewall-lite
|
|
documentation</ulink>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>version</filename> - A file containing the currently
|
|
install version of Shorewall.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>wait4ifup</filename> - A shell program that <ulink
|
|
url="shorewall_extension_scripts.htm">extension scripts</ulink> can
|
|
use to delay until a network interface is available.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
|
|
<section id="var-lite">
|
|
<title>/var/lib/shorewall-lite</title>
|
|
|
|
<para>Shorewall-lite doesn't install any files in this directory but
|
|
rather uses the directory for storing state information. This directory
|
|
may be relocated using <ulink
|
|
url="manpages/shorewall-lite-vardir.html">shorewall-lite-vardir</ulink>(5).</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename>firewall</filename> - Compiled shell script
|
|
installed by running the load or reload command on the
|
|
administrative system (see <ulink
|
|
url="manpages/shorewall.html">shorewall</ulink>(8)).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>firewall.conf</filename> - Digest of the
|
|
shorewall.conf file used to compile the firewall script on the
|
|
administrative system.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><filename>.iptables-restore-input </filename>- The file passed
|
|
as input to the iptables-restore program to initialize the firewall
|
|
during the last <command>start</command> or
|
|
<command>restart</command> command (see <ulink
|
|
url="manpages/shorewall-lite.html">shorewall-lite</ulink>(8)).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.modules</filename> - The contents of the modules
|
|
file used during the last <command>start</command> or
|
|
<command>restart</command> command (see <ulink
|
|
url="manpages/shorewall-lite.html">shorewall-lite</ulink>(8) for
|
|
command information).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.modulesdir</filename> - The MODULESDIR setting
|
|
(<ulink
|
|
url="manpages/shorewall.conf.html">shorewall.conf</ulink>(5)) at the
|
|
last <command>start</command> or <command>restart.</command></para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>nat</filename> - This unfortunately-named file
|
|
records the IP addresses added by ADD_SNAT_ALIASES=Yes and
|
|
ADD_IP_ALIASES=Yes in <ulink
|
|
url="manpages/shorewall.conf.html">shorewall.conf</ulink>(5).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>proxyarp</filename> - Records the arp entries added
|
|
by entries in <ulink
|
|
url="manpages/shorewall-proxyarp.html">shorewall-proxyarp</ulink>(5).</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.refresh</filename> - The shell program that
|
|
performed the last successful <command>refresh</command>
|
|
command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.restart</filename> - The shell program that
|
|
performed the last successful <command>restart</command>
|
|
command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>restore</filename> - The default shell program used
|
|
to execute <command>restore</command> commands.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.restore</filename> - The shell program that
|
|
performed the last successful <command>refresh, restart</command> or
|
|
<command>start</command> command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>save</filename> - File created by the
|
|
<command>save</command> command and used to restore the dynamic
|
|
blacklist during <command>start/restart</command>.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>.start</filename> - The shell program that performed
|
|
the last successful <command>start</command> command.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>state</filename> - Records the current firewall
|
|
state.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para><filename>zones</filename> - Records the current zone
|
|
contents.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
</section>
|
|
</section>
|
|
</article> |