mirror of
https://gitlab.com/shorewall/code.git
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244 lines
8.2 KiB
XML
244 lines
8.2 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-providers</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>providers</refname>
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<refpurpose>Shorewall Providers file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>/etc/shorewall/providers</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>This file is used to define additional routing tables. You will want
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to define an additional table if:</para>
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<itemizedlist>
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<listitem>
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<para>You have connections to more than one ISP or multiple
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connections to the same ISP</para>
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</listitem>
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<listitem>
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<para>You run Squid as a transparent proxy on a host other than the
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firewall.</para>
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</listitem>
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<listitem>
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<para>You have other requirements for policy routing.</para>
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</listitem>
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</itemizedlist>
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<para>Each entry in the file defines a single routing table.</para>
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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">NAME</emphasis></term>
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<listitem>
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<para>The provider name. Must be a valid shell variable name. The
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names 'local', 'main', 'default' and 'unspec' are reserved and may
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not be used as provider names.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">NUMBER</emphasis></term>
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<listitem>
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<para>The provider number -- a number between 1 and 15. Each
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provider must be assigned a unique value.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">MARK</emphasis></term>
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<listitem>
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<para>A FWMARK value used in your shorewall-tcrules(5) file to
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direct packets to this provider.</para>
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<para>If HIGH_ROUTE_MARKS=Yes in shorewall.conf(5), then the value
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must be a multiple of 256 between 256 and 65280 or their hexadecimal
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equivalents (0x0100 and 0xff00 with the low-order byte of the value
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being zero). Otherwise, the value must be between 1 and 255. Each
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provider must be assigned a unique mark value.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">DUPLICATE</emphasis></term>
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<listitem>
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<para>The name of an existing table to duplicate to create this
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routing. May be 'main' or the name of a previous provider. You may
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select only certain entries from the table to copy by using the COPY
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column below.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">INTERFACE</emphasis></term>
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<listitem>
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<para>The name of the network interface to the provider. Must be
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listed in shorewall-interfaces(5).</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">GATEWAY</emphasis></term>
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<listitem>
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<para>The IP address of the provider's gateway router.</para>
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<para>You can enter "detect" here and Shorewall will attempt to
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detect the gateway automatically.</para>
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<para>For PPP devices, you may omit this column.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">OPTIONS</emphasis> (Optional)</term>
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<listitem>
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<para>A comma-separated list selected from the following. The order
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of the options is not significant but the list may contain no
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embedded whitespace.</para>
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<variablelist>
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<varlistentry>
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<term><emphasis role="bold">track</emphasis></term>
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<listitem>
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<para>If specified, inbound connections on this interface are
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to be tracked so that responses may be routed back out this
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same interface.</para>
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<para>You want to specify 'track' if internet hosts will be
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connecting to local servers through this provider.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">balance</emphasis></term>
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<listitem>
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<para>The providers that have 'balance' specified will get
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outbound traffic load-balanced among them. By default, all
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interfaces with 'balance' specified will have the same weight
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(1). You can change the weight of an interface by specifiying
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balance=<weight> where <weight> is the weight of
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the route out of this interface.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">loose</emphasis></term>
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<listitem>
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<para>Shorewall normally adds a routing rule for each IP
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address on an interface which forces traffic whose source is
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that IP address to be sent using the routing table for that
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interface. Setting 'loose' prevents creation of such rules on
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this interface.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">optional</emphasis></term>
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<listitem>
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<para> If the interface named in the INTERFACE column is not
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up and configured with an IPv4 address then ignore this
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provider. </para>
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</listitem>
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</varlistentry>
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</variablelist>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">COPY</emphasis></term>
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<listitem>
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<para>A comma-separated lists of other interfaces on your firewall.
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Usually used only when DUPLICATE is 'main'. Only copy routes through
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INTERFACE and through interfaces listed here. If you only wish to
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copy routes through INTERFACE, enter 'none' here.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<variablelist>
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<varlistentry>
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<term>Example 1:</term>
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<listitem>
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<para>You run squid in your DMZ on IP address 192.168.2.99. Your DMZ
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interface is eth2</para>
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<programlisting> #NAME NUMBER MARK DUPLICATE INTERFACE GATEWAY OPTIONS
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Squid 1 1 - eth2 192.168.2.99 -</programlisting>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>Example 2:</term>
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<listitem>
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<para>eth0 connects to ISP 1. The IP address of eth0 is
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206.124.146.176 and the ISP's gateway router has IP address
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206.124.146.254.</para>
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<para>eth1 connects to ISP 2. The IP address of eth1 is
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130.252.99.27 and the ISP's gateway router has IP address
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130.252.99.254.</para>
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<para>eth2 connects to a local network.</para>
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<programlisting> #NAME NUMBER MARK DUPLICATE INTERFACE GATEWAY OPTIONS COPY
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ISP1 1 1 main eth0 206.124.146.254 track,balance eth2
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ISP2 2 2 main eth1 130.252.99.254 track,balance eth2</programlisting>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>FILES</title>
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<para>/etc/shorewall/providers</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-proxyarp(5), shorewall-route_routes(5),
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shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5),
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shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5),
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shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5)</para>
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</refsect1>
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</refentry>
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