<?xml version="1.0" encoding="UTF-8"?> <refentry> <refmeta> <refentrytitle>shorewall-blacklist</refentrytitle> <manvolnum>5</manvolnum> </refmeta> <refnamediv> <refname>blacklist</refname> <refpurpose>Shorewall Blacklist file</refpurpose> </refnamediv> <refsynopsisdiv> <cmdsynopsis> <command>/etc/shorewall/blacklist</command> </cmdsynopsis> </refsynopsisdiv> <refsect1> <title>Description</title> <para>The blacklist file is used to perform static blacklisting. You can blacklist by source address (IP or MAC), or by application.</para> <para>The columns in the file are as follows.</para> <variablelist> <varlistentry> <term><emphasis role="bold">ADDRESS/SUBNET</emphasis> - {<emphasis role="bold">-</emphasis>|<emphasis role="bold">~</emphasis><emphasis>mac-address</emphasis>|<emphasis>ip-address</emphasis>|<emphasis>address-range</emphasis>|<emphasis role="bold">+</emphasis><emphasis>ipset</emphasis>}</term> <listitem> <para>Host address, network address, MAC address, IP address range (if your kernel and iptables contain iprange match support) or ipset name prefaced by "+" (if your kernel supports ipset match).</para> <para>MAC addresses must be prefixed with "~" and use "-" as a separator.</para> <para>Example: ~00-A0-C9-15-39-78</para> <para>A dash ("-") in this column means that any source address will match. This is useful if you want to blacklist a particular application using entries in the PROTOCOL and PORTS columns.</para> </listitem> </varlistentry> <varlistentry> <term><emphasis role="bold">PROTOCOL</emphasis> (Optional) - {<emphasis role="bold">-</emphasis>|<emphasis>protocol-number</emphasis>|<emphasis>protocol-name</emphasis>}</term> <listitem> <para>If specified, must be a protocol number or a protocol name from protocols(5).</para> </listitem> </varlistentry> <varlistentry> <term><emphasis role="bold">PORTS</emphasis> (Optional) - {<emphasis role="bold">-</emphasis>|<emphasis>port-name-or-number</emphasis>[,<emphasis>port-name-or-number</emphasis>]...}</term> <listitem> <para>May only be specified if the protocol is TCP (6) or UDP (17). A comma-separated list of destination port numbers or service names from services(5).</para> </listitem> </varlistentry> </variablelist> <para>When a packet arrives on an interface that has the <emphasis role="bold">blacklist</emphasis> option specified in <ulink url="shorewall-interfaces.html">shorewall-interfaces</ulink>(5), its source IP address and MAC address is checked against this file and disposed of according to the <emphasis role="bold">BLACKLIST_DISPOSITION</emphasis> and <emphasis role="bold">BLACKLIST_LOGLEVEL</emphasis> variables in <ulink url="shorewall.conf.html">shorewall.conf</ulink>(5). If <emphasis role="bold">PROTOCOL</emphasis> or <emphasis role="bold">PROTOCOL</emphasis> and <emphasis role="bold">PORTS</emphasis> are supplied, only packets matching the protocol (and one of the ports if <emphasis role="bold">PORTS</emphasis> supplied) are blocked.</para> </refsect1> <refsect1> <title>Example</title> <variablelist> <varlistentry> <term>Example 1:</term> <listitem> <para>To block DNS queries from address 192.0.2.126:</para> <programlisting> #ADDRESS/SUBNET PROTOCOL PORT 192.0.2.126 udp 53</programlisting> </listitem> </varlistentry> <varlistentry> <term>Example 2:</term> <listitem> <para>To block some of the nuisance applications:</para> <programlisting> #ADDRESS/SUBNET PROTOCOL PORT - udp 1024:1033,1434 - tcp 57,1433,1434,2401,2745,3127,3306,3410,4899,5554,6101,8081,9898</programlisting> </listitem> </varlistentry> </variablelist> </refsect1> <refsect1> <title>FILES</title> <para>/etc/shorewall/blacklist</para> </refsect1> <refsect1> <title>See ALSO</title> <para><ulink url="http://shorewall.net/blacklisting_support.htm">http://shorewall.net/blacklisting_support.htm</ulink></para> <para>shorewall(8), shorewall-accounting(5), shorewall-actions(5), shorewall-hosts(5), shorewall-interfaces(5), shorewall-ipsec(5), shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5), shorewall-netmap(5), shorewall-params(5), shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5), shorewall-route_rules(5), shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5), shorewall-tcclasses(5), shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5), shorewall-zones(5)</para> </refsect1> </refentry>