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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@5001 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
218 lines
8.1 KiB
XML
218 lines
8.1 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
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<refentry>
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<refmeta>
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<refentrytitle>shorewall-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>Shorewall file</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<cmdsynopsis>
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<command>/etc/shorewall/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 defined in
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shorewall-zones(5) determines the order in which the records in this file
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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
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shorewall-interfaces(5) then do not include any entries in this file for
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that same (zone, interface) pair.</para>
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</warning>
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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">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 defined in shorewall-zones(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> —
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<emphasis>interface</emphasis>:{[<emphasis>bridge-port</emphasis>:]{<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>]</term>
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<listitem>
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<para>The name of an interface defined in the
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shorewall-interfaces(5) file followed by a colon (":") and a
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comma-separated list whose elements are either:</para>
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<orderedlist numeration="loweralpha">
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<listitem>
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<para>The IP address of a 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 iptables must have iprange match support.</para>
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</listitem>
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<listitem>
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<para>A physical <emphasis>bridge-port</emphasis> name; only
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allowed when the interface names a bridge created by the
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<command>brctl(8) addbr</command> command. This port must not be
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defined in shorewall-interfaces(5) and may be optionally
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followed by a colon (":") and a host or network IP or a range.
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See <ulink
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url="http://www.shorewall.net/bridge.html">http://www.shorewall.net/bridge.html</ulink>
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for details. Specifying a physical port name requires that you
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have BRIDGING=Yes in shorewall.conf(5).</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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</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 shorewall-exclusion(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 (Optional) — [<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>A comma-separated list of options from the following list. The
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order in which you list the options is not significant but the list
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should have no embedded white space.</para>
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<variablelist>
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<varlistentry>
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<term><emphasis role="bold">maclist</emphasis></term>
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<listitem>
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<para>Connection requests from these hosts are compared
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against the contents of shorewall-maclist(5). If this option
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is specified, the interface must be an ethernet NIC or
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equivalent and must be up before Shorewall is started.</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>Shorewall 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">blacklist</emphasis></term>
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<listitem>
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<para>This option only makes sense for ports on a
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bridge.</para>
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<para>Check packets arriving on this port against the
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shorewall-blacklist(5) 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">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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<varlistentry>
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<term><emphasis role="bold">nosmurfs</emphasis></term>
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<listitem>
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<para>This option only makes sense for ports on a
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bridge.</para>
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<para>Filter packets for smurfs (packets with a broadcast
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address as the source).</para>
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<para>Smurfs will be optionally logged based on the setting of
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SMURF_LOG_LEVEL in shorewall.conf(5). After logging, the
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packets are dropped.</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 shorewall-zones(5) file then you do NOT need
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to specify the 'ipsec' option here.</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/shorewall/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://www.shorewall.net/Documentation.htm#Hosts">http://www.shorewall.net/Documentation.htm#Hosts</ulink></para>
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<para>shorewall(8), shorewall-accounting(5), shorewall-actions(5),
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shorewall-blacklist(5), shorewall-interfaces(5), shorewall-ipsec(5),
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shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5),
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shorewall-netmap(5), shorewall-params(5), shorewall-policy(5),
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shorewall-providers(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> |