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210 lines
7.8 KiB
XML
210 lines
7.8 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
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"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
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<refentry>
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<refmeta>
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<refentrytitle>shorewall6-hosts</refentrytitle>
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<manvolnum>5</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>hosts</refname>
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<refpurpose>shorewall6 file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>/etc/shorewall6/hosts</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 zones in terms of subnets and/or
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individual IP addresses. Most simple setups don't need to (should not)
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place anything in this file.</para>
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<para>The order of entries in this file is not significant in determining
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zone composition. Rather, the order that the zones are declared in <ulink
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url="shorewall-zones.html">shorewall6-zones</ulink>(5) determines the
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order in which the records in this file are interpreted.</para>
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<warning>
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<para>The only time that you need this file is when you have more than
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one zone connected through a single interface.</para>
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</warning>
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<warning>
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<para>If you have an entry for a zone and interface in <ulink
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url="shorewall-interfaces.html">shorewall6-interfaces</ulink>(5) then do
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not include any entries in this file for that same (zone, interface)
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pair.</para>
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</warning>
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<para>The columns in the file are as follows (where the column name is
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followed by a different name in parentheses, the different name is used in
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the alternate specification syntax).</para>
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<variablelist>
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<varlistentry>
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<term><emphasis role="bold">ZONE</emphasis> -
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<emphasis>zone-name</emphasis></term>
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<listitem>
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<para>The name of a zone declared in <ulink
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url="shorewall-zones.html">shorewall6-zones</ulink>(5). You may not
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list the firewall zone in 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">HOST(S)</emphasis> (hosts)-
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<emphasis>interface</emphasis>:<option>[</option>{[{<emphasis>address-or-range</emphasis>[<emphasis
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role="bold">,</emphasis><emphasis>address-or-range</emphasis>]...|<emphasis
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role="bold">+</emphasis><emphasis>ipset</emphasis>}[<emphasis>exclusion</emphasis>]<option>]</option></term>
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<listitem>
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<para>The name of an interface defined in the <ulink
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url="shorewall-interfaces.html">shorewall6-interfaces</ulink>(5)
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file followed by a colon (":") and a comma-separated list whose
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elements are either:</para>
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<orderedlist numeration="loweralpha">
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<listitem>
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<para>The IPv6 <replaceable>address</replaceable> of a
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host.</para>
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</listitem>
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<listitem>
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<para>A network in CIDR format.</para>
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</listitem>
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<listitem>
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<para>An IP address range of the form
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<emphasis>low.address</emphasis>-<emphasis>high.address</emphasis>.
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Your kernel and ip6tables must have iprange match
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support.</para>
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</listitem>
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<listitem>
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<para>The name of an <emphasis>ipset</emphasis>.</para>
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</listitem>
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<listitem>
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<para>The word <option>dynamic</option> which makes the zone
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dynamic in that you can use the <command>shorewall add</command>
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and <command>shorewall delete</command> commands to change to
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composition of the zone. This capability was added in Shorewall
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4.4.21.</para>
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</listitem>
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</orderedlist>
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<blockquote>
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<para>You may also exclude certain hosts through use of an
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<emphasis>exclusion</emphasis> (see <ulink
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url="shorewall-exclusion.html">shorewall6-exclusion</ulink>(5).</para>
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</blockquote>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>OPTIONS - [<emphasis>option</emphasis>[<emphasis
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role="bold">,</emphasis><emphasis>option</emphasis>]...]</term>
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<listitem>
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<para>An optional comma-separated list of options from the following
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list. The order in which you list the options is not significant but
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the list must have no embedded white space.</para>
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<variablelist>
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<varlistentry>
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<term><emphasis role="bold">blacklist</emphasis></term>
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<listitem>
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<para>Check packets arriving on this port against the <ulink
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url="shorewall-blacklist.html">shorewall6-blacklist</ulink>(5)
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file.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">ipsec</emphasis></term>
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<listitem>
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<para>The zone is accessed via a kernel 2.6 ipsec SA. Note
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that if the zone named in the ZONE column is specified as an
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IPSEC zone in the <ulink
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url="shorewall-zones.html">shorewall6-zones</ulink>(5) file
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then you do NOT need to specify the 'ipsec' option
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here.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis
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role="bold">mss</emphasis>=<replaceable>mss</replaceable></term>
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<listitem>
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<para>Added in Shorewall 4.5.2. When present, causes the TCP
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mss for new connections to/from the hosts given in the HOST(S)
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column to be clamped at the specified
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<replaceable>mss</replaceable>.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">routeback</emphasis></term>
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<listitem>
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<para>shorewall6 should set up the infrastructure to pass
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packets from this/these address(es) back to themselves. This
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is necessary if hosts in this group use the services of a
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transparent proxy that is a member of the group or if DNAT is
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used to send requests originating from this group to a server
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in the group.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><emphasis role="bold">tcpflags</emphasis></term>
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<listitem>
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<para>Packets arriving from these hosts are checked for
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certain illegal combinations of TCP flags. Packets found to
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have such a combination of flags are handled according to the
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setting of TCP_FLAGS_DISPOSITION after having been logged
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according to the setting of TCP_FLAGS_LOG_LEVEL.</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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</variablelist>
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</refsect1>
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<refsect1>
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<title>FILES</title>
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<para>/etc/shorewall6/hosts</para>
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</refsect1>
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<refsect1>
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<title>See ALSO</title>
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<para><ulink
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url="http://shorewall.net/configuration_file_basics.htm#Pairs">http://shorewall.net/configuration_file_basics.htm#Pairs</ulink></para>
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<para>shorewall6(8), shorewall6-accounting(5), shorewall6-actions(5),
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shorewall6-blacklist(5), shorewall6-interfaces(5), shorewall6-maclist(5),
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shoewall6-netmap(5),shorewall6-params(5), shorewall6-policy(5),
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shorewall6-providers(5), shorewall6-rtrules(5),
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shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5),
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shorewall6-secmarks(5), shorewall6-tcclasses(5), shorewall6-tcdevices(5),
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shorewall6-tcrules(5), shorewall6-tos(5), shorewall6-tunnels(5),
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shorewall-zones(5)</para>
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</refsect1>
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</refentry>
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