mirror of
https://gitlab.com/shorewall/code.git
synced 2024-11-22 15:43:30 +01:00
331 lines
12 KiB
XML
331 lines
12 KiB
XML
<?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>shorewall6-providers</refentrytitle>
|
|
|
|
<manvolnum>5</manvolnum>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>providers</refname>
|
|
|
|
<refpurpose>Shorewall6 Providers file</refpurpose>
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv>
|
|
<cmdsynopsis>
|
|
<command>/etc/shorewall6/providers</command>
|
|
</cmdsynopsis>
|
|
</refsynopsisdiv>
|
|
|
|
<refsect1>
|
|
<title>Description</title>
|
|
|
|
<para>This file is used to define additional routing tables. You will want
|
|
to define an additional table if:</para>
|
|
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para>You have connections to more than one ISP or multiple
|
|
connections to the same ISP</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>You run Squid as a transparent proxy on a host other than the
|
|
firewall.</para>
|
|
</listitem>
|
|
|
|
<listitem>
|
|
<para>You have other requirements for policy routing.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
|
|
<para>Each entry in the file defines a single routing table.</para>
|
|
|
|
<para>If you wish to omit a column entry but want to include an entry in
|
|
the next column, use "-" for the omitted entry.</para>
|
|
|
|
<para>The columns in the file are as follows.</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><emphasis role="bold">NAME</emphasis> -
|
|
<emphasis>name</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>The provider <emphasis>name</emphasis>. Must be a valid shell
|
|
variable name. The names 'local', 'main', 'default' and 'unspec' are
|
|
reserved and may not be used as provider names.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">NUMBER</emphasis> -
|
|
<emphasis>number</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>The provider number -- a number between 1 and 15. Each
|
|
provider must be assigned a unique value.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">MARK</emphasis> (Optional) -
|
|
<emphasis>value</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>A FWMARK <emphasis>value</emphasis> used in your <ulink
|
|
url="shorewall6-tcrules.html">shorewall6-tcrules(5)</ulink> file to
|
|
direct packets to this provider.</para>
|
|
|
|
<para>If HIGH_ROUTE_MARKS=Yes in <ulink
|
|
url="shorewall6.conf.html">shorewall6.conf(5)</ulink>, then the
|
|
value must be a multiple of 256 between 256 and 65280 or their
|
|
hexadecimal equivalents (0x0100 and 0xff00 with the low-order byte
|
|
of the value being zero). Otherwise, the value must be between 1 and
|
|
255. Each provider must be assigned a unique mark value. This column
|
|
may be omitted if you don't use packet marking to direct connections
|
|
to a particular provider and you don't specify
|
|
<option>track</option> in the OPTIONS column.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">DUPLICATE</emphasis> -
|
|
<emphasis>routing-table-name</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>The name of an existing table to duplicate to create this
|
|
routing table. May be <option>main</option> or the name of a
|
|
previously listed provider. You may select only certain entries from
|
|
the table to copy by using the COPY column below.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">INTERFACE</emphasis> -
|
|
<emphasis>interface</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>The name of the network interface to the provider. Must be
|
|
listed in <ulink
|
|
url="shorewall6-interfaces.html">shorewall6-interfaces(5)</ulink>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">GATEWAY</emphasis> - {<emphasis
|
|
role="bold">-</emphasis>|<emphasis>address</emphasis>|<emphasis
|
|
role="bold">detect</emphasis>}</term>
|
|
|
|
<listitem>
|
|
<para>The IP address of the provider's gateway router.</para>
|
|
|
|
<para>You can enter "detect" here and Shorewall6 will attempt to
|
|
detect the gateway automatically.</para>
|
|
|
|
<para>For PPP devices, you may omit this column.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">OPTIONS</emphasis> (Optional) - [<emphasis
|
|
role="bold">-</emphasis>|<emphasis>option</emphasis>[<emphasis
|
|
role="bold">,</emphasis><emphasis>option</emphasis>]...]</term>
|
|
|
|
<listitem>
|
|
<para>A comma-separated list selected from the following. The order
|
|
of the options is not significant but the list may contain no
|
|
embedded whitespace.</para>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><emphasis role="bold">balance</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>Added in Shorewall 4.4.25. Causes a default route to
|
|
this provider's gateway to be added to the <emphasis
|
|
role="bold">main</emphasis> routing table (USE_DEFAULT_RT=No)
|
|
or to the <emphasis role="bold">balance</emphasis> routing
|
|
table (USE_DEFAULT_RT=Yes). At most one provider can specify
|
|
this option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">fallback</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>Added in Shorewall 4.4.25. Causes a default route to
|
|
this provider's gateway to be added to the <emphasis
|
|
role="bold">default</emphasis> routing table.At most one
|
|
provider can specify this option.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">track</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>If specified, inbound connections on this interface are
|
|
to be tracked so that responses may be routed back out this
|
|
same interface.</para>
|
|
|
|
<para>You want to specify <option>track</option> if internet
|
|
hosts will be connecting to local servers through this
|
|
provider.</para>
|
|
|
|
<para>Beginning with Shorewall 4.4.3, <option>track</option>
|
|
defaults to the setting of the TRACK_PROVIDERS option in
|
|
<ulink url="shorwewall6.conf.html">shorewall6.conf</ulink>
|
|
(5). If you set TRACK_PROVIDERS=Yes and want to override that
|
|
setting for an individual provider, then specify
|
|
<option>notrack</option> (see below).</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">loose</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>Shorewall6 normally adds a routing rule for each IP
|
|
address on an interface which forces traffic whose source is
|
|
that IP address to be sent using the routing table for that
|
|
interface. Setting <option>loose</option> prevents creation of
|
|
such rules on this interface.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">notrack</emphasis></term>
|
|
|
|
<listitem>
|
|
<para>Added in Shorewall 4.4.3. When specified, turns off
|
|
<option>track</option>.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">optional</emphasis> (deprecated for
|
|
use with providers that do not share an interface)</term>
|
|
|
|
<listitem>
|
|
<para>If the interface named in the INTERFACE column is not up
|
|
and configured with an IPv4 address then ignore this provider.
|
|
If not specified, the value of the <option>optional</option>
|
|
option for the INTERFACE in <ulink
|
|
url="shorewall6-interfaces.html">shorewall6-interfaces(5)</ulink>
|
|
is assumed. Use of that option is preferred to this one,
|
|
unless an <replaceable>address</replaceable> is provider in
|
|
the INTERFACE column.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>src=<replaceable>source-address</replaceable></term>
|
|
|
|
<listitem>
|
|
<para>Specifies the source address to use when routing to this
|
|
provider and none is known (the local client has bound to the
|
|
0 address). May not be specified when an
|
|
<replaceable>address</replaceable> is given in the INTERFACE
|
|
column. If this option is not used, Shorewall6 substitutes the
|
|
primary IP address on the interface named in the INTERFACE
|
|
column.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>mtu=<replaceable>number</replaceable></term>
|
|
|
|
<listitem>
|
|
<para>Specifies the MTU when forwarding through this provider.
|
|
If not given, the MTU of the interface named in the INTERFACE
|
|
column is assumed.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term><emphasis role="bold">COPY</emphasis> -
|
|
[{<option>none</option>|<emphasis>interface</emphasis><emphasis
|
|
role="bold">[,</emphasis><emphasis>interface</emphasis>]...}]</term>
|
|
|
|
<listitem>
|
|
<para>A comma-separated list of other interfaces on your firewall.
|
|
Wildcards specified using an asterisk ("*") are permitted (e.g.,
|
|
tun* ). Usually used only when DUPLICATE is <option>main</option>.
|
|
Only copy routes through INTERFACE and through interfaces listed
|
|
here. If you only wish to copy routes through INTERFACE, enter
|
|
<option>none</option> in this column.</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>Examples</title>
|
|
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term>Example 1:</term>
|
|
|
|
<listitem>
|
|
<para>You run squid in your DMZ on IP address 2002:ce7c:92b4:1::2.
|
|
Your DMZ interface is eth2</para>
|
|
|
|
<programlisting> #NAME NUMBER MARK DUPLICATE INTERFACE GATEWAY OPTIONS
|
|
Squid 1 1 - eth2 2002:ce7c:92b4:1::2 -</programlisting>
|
|
</listitem>
|
|
</varlistentry>
|
|
|
|
<varlistentry>
|
|
<term>Example 2:</term>
|
|
|
|
<listitem>
|
|
<para>eth0 connects to ISP 1. The ISP's gateway router has IP
|
|
address 2001:ce7c:92b4:1::2.</para>
|
|
|
|
<para>eth1 connects to ISP 2. The ISP's gateway router has IP
|
|
address 2001:d64c:83c9:12::8b.</para>
|
|
|
|
<para>eth2 connects to a local network.</para>
|
|
|
|
<programlisting> #NAME NUMBER MARK DUPLICATE INTERFACE GATEWAY OPTIONS COPY
|
|
ISP1 1 1 main eth0 2001:ce7c:92b4:1::2 track eth2
|
|
ISP2 2 2 main eth1 2001:d64c:83c9:12::8b track eth2</programlisting>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>FILES</title>
|
|
|
|
<para>/etc/shorewall6/providers</para>
|
|
</refsect1>
|
|
|
|
<refsect1>
|
|
<title>See ALSO</title>
|
|
|
|
<para><ulink
|
|
url="http://shorewall.net/MultiISP.html">http://shorewall.net/MultiISP.html</ulink></para>
|
|
|
|
<para><ulink
|
|
url="http://shorewall.net/configuration_file_basics.htm#Pairs">http://shorewall.net/configuration_file_basics.htm#Pairs</ulink></para>
|
|
|
|
<para>shorewall6(8), shorewall6-accounting(5), shorewall6-actions(5),
|
|
shorewall6-blacklist(5), shorewall6-hosts(5), shorewall6-interfaces(5),
|
|
shorewall6-maclist(5), shoewall6-netmap(5),shorewall6-params(5),
|
|
shorewall6-policy(5), shorewall6-route_rules(5),
|
|
shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5),
|
|
shorewall6-secmarks(5), shorewall6-tcclasses(5), shorewall6-tcdevices(5),
|
|
shorewall6-tcrules(5), shorewall6-tos(5), shorewall6-tunnels(5),
|
|
shorewall6-zones(5)</para>
|
|
</refsect1>
|
|
</refentry>
|