shorewall_code/manpages/shorewall-secmarks.xml

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<refentry>
  <refmeta>
    <refentrytitle>shorewall-secmarks</refentrytitle>

    <manvolnum>5</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>secmarks</refname>

    <refpurpose>Shorewall file</refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>/etc/shorewall/secmarks</command>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para>The secmarks file is used to associate an SELinux context with
    packets.</para>

    <para>The columns in the file are as follows.</para>

    <variablelist>
      <varlistentry>
        <term><emphasis role="bold">SECMARK -
        {SAVE|RESTORE|<replaceable>context</replaceable>}</emphasis></term>

        <listitem>
          <variablelist>
            <varlistentry>
              <term><emphasis role="bold">SAVE</emphasis></term>

              <listitem>
                <para>If an SELinux context is associated with the packet, the
                context is saved in the connection.</para>
              </listitem>
            </varlistentry>

            <varlistentry>
              <term><emphasis role="bold">RESTORE</emphasis></term>

              <listitem>
                <para>If an SELinux context is not currently associated with
                the packet, then the saved context (if any) is associated with
                the packet.</para>
              </listitem>
            </varlistentry>

            <varlistentry>
              <term><replaceable role="bold">context</replaceable></term>

              <listitem>
                <para>An SELinux context.</para>
              </listitem>
            </varlistentry>
          </variablelist>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">CHAIN - {P|I|F|O|T}</emphasis></term>

        <listitem>
          <simplelist>
            <member>P - PREROUTING</member>

            <member>I - INPUT</member>

            <member>F - FORWARD</member>

            <member>O - OUTPUT</member>

            <member>T - POSTROUTING</member>
          </simplelist>
        </listitem>
      </varlistentry>
    </variablelist>

    <variablelist>
      <varlistentry>
        <term><emphasis role="bold">SOURCE</emphasis> - {<emphasis
        role="bold">-</emphasis><emphasis>interface</emphasis>|[<emphasis>interface</emphasis>:]<emphasis>address-or-range</emphasis>[<emphasis
        role="bold">,</emphasis><emphasis>address-or-range</emphasis>]...}[<emphasis>exclusion</emphasis>]</term>

        <listitem>
          <para>May be:</para>

          <orderedlist>
            <listitem>
              <para>An interface name - matches traffic entering the firewall
              on the specified interface. May not be used in classify rules or
              in rules using the T in the CHAIN column.</para>
            </listitem>

            <listitem>
              <para>A comma-separated list of host or network IP addresses or
              MAC addresses. </para>
            </listitem>

            <listitem>
              <para>An interface name followed by a colon (":") followed by a
              comma-separated list of host or network IP addresses or MAC
              addresses.</para>
            </listitem>
          </orderedlist>

          <para>MAC addresses must be prefixed with "~" and use "-" as a
          separator.</para>

          <para>Example: ~00-A0-C9-15-39-78</para>

          <para>You may exclude certain hosts from the set already defined
          through use of an <emphasis>exclusion</emphasis> (see <ulink
          url="shorewall-exclusion.html">shorewall-exclusion</ulink>(5)).</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">DEST</emphasis> - {<emphasis
        role="bold">-</emphasis>|{<emphasis>interface</emphasis>|[<emphasis>interface</emphasis>:]<emphasis>address-or-range</emphasis>[<emphasis
        role="bold">,</emphasis><emphasis>address-or-range</emphasis>]...}[<emphasis>exclusion</emphasis>]</term>

        <listitem>
          <para>May be:</para>

          <orderedlist>
            <listitem>
              <para>An interface name. May not be used in the PREROUTING or
              INPUT chains. The interface name may be optionally followed by a
              colon (":") and an IP address list.</para>
            </listitem>

            <listitem>
              <para>A comma-separated list of host or network IP addresses.
              The list may include ip address ranges if your kernel and
              iptables include iprange support.</para>
            </listitem>
          </orderedlist>

          <para>You may exclude certain hosts from the set already defined
          through use of an <emphasis>exclusion</emphasis> (see <ulink
          url="shorewall-exclusion.html">shorewall-exclusion</ulink>(5)).</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">PROTO</emphasis> - {<emphasis
        role="bold">-</emphasis>|<emphasis
        role="bold">tcp:syn</emphasis>|<emphasis
        role="bold">ipp2p</emphasis>|<emphasis
        role="bold">ipp2p:udp</emphasis>|<emphasis
        role="bold">ipp2p:all</emphasis>|<emphasis>protocol-number</emphasis>|<emphasis>protocol-name</emphasis>|<emphasis
        role="bold">all}</emphasis></term>

        <listitem>
          <para>Protocol - <emphasis role="bold">ipp2p</emphasis> requires
          ipp2p match support in your kernel and iptables.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">PORT(S)</emphasis> (Optional) - [<emphasis
        role="bold">-</emphasis>|<emphasis>port-name-number-or-range</emphasis>[<emphasis
        role="bold">,</emphasis><emphasis>port-name-number-or-range</emphasis>]...]</term>

        <listitem>
          <para>Destination Ports. A comma-separated list of Port names (from
          services(5)), <emphasis>port number</emphasis>s or <emphasis>port
          range</emphasis>s; if the protocol is <emphasis
          role="bold">icmp</emphasis>, this column is interpreted as the
          destination icmp-type(s). ICMP types may be specified as a numeric
          type, a numberic type and code separated by a slash (e.g., 3/4), or
          a typename. See <ulink
          url="http://www.shorewall.net/configuration_file_basics.htm#ICMP">http://www.shorewall.net/configuration_file_basics.htm#ICMP</ulink>.</para>

          <para>If the protocol is <emphasis role="bold">ipp2p</emphasis>,
          this column is interpreted as an ipp2p option without the leading
          "--" (example <emphasis role="bold">bit</emphasis> for bit-torrent).
          If no PORT is given, <emphasis role="bold">ipp2p</emphasis> is
          assumed.</para>

          <para>This column is ignored if PROTOCOL = all but must be entered
          if any of the following field is supplied. In that case, it is
          suggested that this field contain "-"</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">SOURCE PORT(S)</emphasis> (Optional) -
        [<emphasis
        role="bold">-</emphasis>|<emphasis>port-name-number-or-range</emphasis>[<emphasis
        role="bold">,</emphasis><emphasis>port-name-number-or-range</emphasis>]...]</term>

        <listitem>
          <para>Source port(s). If omitted, any source port is acceptable.
          Specified as a comma-separated list of port names, port numbers or
          port ranges.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">MARK</emphasis> - [<emphasis
        role="bold">!</emphasis>]<emphasis>value</emphasis>[/<emphasis>mask</emphasis>][<emphasis
        role="bold">:C</emphasis>]</term>

        <listitem>
          <para>Defines a test on the existing packet or connection mark. The
          rule will match only if the test returns true.</para>

          <para>If you don't want to define a test but need to specify
          anything in the following columns, place a "-" in this field.</para>

          <variablelist>
            <varlistentry>
              <term>!</term>

              <listitem>
                <para>Inverts the test (not equal)</para>
              </listitem>
            </varlistentry>

            <varlistentry>
              <term><emphasis>value</emphasis></term>

              <listitem>
                <para>Value of the packet or connection mark.</para>
              </listitem>
            </varlistentry>

            <varlistentry>
              <term><emphasis>mask</emphasis></term>

              <listitem>
                <para>A mask to be applied to the mark before testing.</para>
              </listitem>
            </varlistentry>

            <varlistentry>
              <term><emphasis role="bold">:C</emphasis></term>

              <listitem>
                <para>Designates a connection mark. If omitted, the packet
                mark's value is tested.</para>
              </listitem>
            </varlistentry>
          </variablelist>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>FILES</title>

    <para>/etc/shorewall/secmarks</para>
  </refsect1>

  <refsect1>
    <title>See ALSO</title>

    <para>shorewall(8), shorewall-accounting(5), shorewall-actions(5),
    shorewall-blacklist(5), shorewall-hosts(5), shorewall-interfaces(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>