mirror of
https://gitlab.com/shorewall/code.git
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100 lines
3.2 KiB
XML
100 lines
3.2 KiB
XML
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<?xml version="1.0" encoding="UTF-8"?>
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<refentry>
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<refmeta>
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<refentrytitle>shorewall-rfc1918</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>rfc1918</refname>
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<refpurpose>Shorewall file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>/usr/share/shorewall/rfc1918</command>
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</cmdsynopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>The rfc1918 file determines the handling of connections under the
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norfc1918 option in <ulink
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url="shorewall-interfaces.html">shorewall-interfaces</ulink>(5). Do not
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modify <filename>/usr/share/shorewall/rfc1918</filename>; if you need to
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change norfc1918 handling, then copy
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<filename>/usr/share/shorewall/rfc1918</filename> to
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<filename>/etc/shorewall/rfc1918</filename> and modify the copy.</para>
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<para>The released version of this file logs and drops packets from the
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three address ranges reserved by RFC 1918:</para>
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<blockquote>
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<programlisting>10.0.0.0/8
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172.16.0.0/12
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192.168.0.0/16</programlisting>
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</blockquote>
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<para>The columns in the file are as follows.</para>
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<variablelist>
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<varlistentry>
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<term><emphasis role="bold">SUBNET -
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<replaceable>address</replaceable></emphasis></term>
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<listitem>
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<para>Subnet address in CIDR format.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">TARGET</emphasis> - {<emphasis
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role="bold">RETURN</emphasis>|<emphasis
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role="bold">DROP</emphasis>|<emphasis
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role="bold">logdrop</emphasis>}</term>
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<listitem>
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<para><emphasis role="bold">RETURN</emphasis> causes packets to/from
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the specified subnet to be processed normally by the applicable
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rules and policies.</para>
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<para><emphasis role="bold">DROP</emphasis> causes packets from the
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specified subnet to be silently dropped.</para>
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<para><emphasis role="bold">logdrop</emphasis> causes packets from
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the specified subnet to be logged at the level specified by the
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RFC1918_LOG_LEVEL option in <ulink
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url="shorewall.conf.html">shorewall.conf</ulink>(5).</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>Also, please see the RFC1918_STRICT option in <ulink
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url="shorewall.conf.html">shorewall.conf</ulink>(5).</para>
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</refsect1>
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<refsect1>
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<title>FILES</title>
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<para>/usr/share/shorewall/rfc1918</para>
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<para>/etc/shorewall/rfc1918</para>
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</refsect1>
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<refsect1>
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<title>See ALSO</title>
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<para>shorewall(8), shorewall-accounting(5), shorewall-actions(5),
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shorewall-blacklist(5), shorewall-hosts(5), shorewall-interfaces(5),
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shorewall-ipsec(5), shorewall-maclist(5), shorewall-masq(5),
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shorewall-nat(5), shorewall-netmap(5), shorewall-params(5),
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shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5),
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shorewall-route_rules(5), shorewall-routestopped(5), shorewall-rules(5),
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shorewall.conf(5), shorewall-tcclasses(5), shorewall-tcdevices(5),
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shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
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shorewall-zones(5)</para>
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</refsect1>
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</refentry>
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