shorewall_code/manpages/shorewall-exclusion.xml
2010-07-19 14:45:05 -07:00

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<refentry>
<refmeta>
<refentrytitle>shorewall-exclusion</refentrytitle>
<manvolnum>5</manvolnum>
</refmeta>
<refnamediv>
<refname>exclusion</refname>
<refpurpose>Exclude a set of hosts from a definition in a shorewall
configuration file.</refpurpose>
</refnamediv>
<refsynopsisdiv>
<cmdsynopsis>
<arg choice="plain"
rep="repeat"><option>!</option><replaceable>address-or-range</replaceable>[,<replaceable>address-or-range</replaceable>]</arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>Exclusion is used when you wish to exclude one or more addresses
from a definition. An exclaimation point is followed by a comma-separated
list of addresses. The addresses may be single host addresses (e.g.,
192.168.1.4) or they may be network addresses in CIDR format (e.g.,
192.168.1.0/24). If your kernel and iptables include iprange support, you
may also specify ranges of ip addresses of the form
<emphasis>lowaddress</emphasis>-<emphasis>highaddress</emphasis></para>
<para>No embedded whitespace is allowed.</para>
<para>Exclusion can appear after a list of addresses and/or address
ranges. In that case, the final list of address is formed by taking the
first list and then removing the addresses defined in the
exclusion.</para>
</refsect1>
<refsect1>
<title>Examples</title>
<variablelist>
<varlistentry>
<term>Example 1 - All IPv4 addresses except 192.168.3.4</term>
<listitem>
<para>!192.168.3.4</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Example 2 - All IPv4 addresses except the network 192.168.1.0/24
and the host 10.2.3.4</term>
<listitem>
<para>!192.168.1.0/24,10.1.3.4</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Example 3 - All IPv4 addresses except the range
192.168.1.3-192.168.1.12 and the network 10.0.0.0/8</term>
<listitem>
<para>!192.168.1.3-192.168.1.12,10.0.0.0/8</para>
</listitem>
</varlistentry>
<varlistentry>
<term>Example 4 - The network 192.168.1.0/24 except hosts 192.168.1.3
and 192.168.1.9</term>
<listitem>
<para>192.168.1.0/24!192.168.1.3,192.168.1.9</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>FILES</title>
<para>/etc/shorewall/hosts</para>
<para>/etc/shorewall/masq</para>
<para>/etc/shorewall/rules</para>
<para>/etc/shorewall/tcrules</para>
</refsect1>
<refsect1>
<title>See ALSO</title>
<para>shorewall(8), shorewall-accounting(5), shorewall-actions(5),
shorewall-blacklist(5), shorewall-hosts(5), shorewall-interfaces(5),
shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5),
shorewall-netmap(5), shorewall-params(5), shorewall-policy(5),
shorewall-providers(5), shorewall-proxyarp(5), shorewall-route_rules(5),
shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5),
shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5),
shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5)</para>
</refsect1>
</refentry>