shorewall_code/manpages/shorewall-tcpri.xml

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

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

  <refnamediv>
    <refname>tcpri</refname>

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

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

  <refsect1>
    <title>Description</title>

    <para>This file is used to specify the priority of traffic for simple
    traffic shaping (TC_ENABLED=Simple in <ulink
    url="shorewall.conf.html">shorewall.conf</ulink>(5)). The priority band of
    each packet is determined by the <emphasis role="bold">last</emphasis>
    entry that the packet matches. If a packet doesn't match any entry in this
    file, then its priority will be determined by its TOS field. The default
    mapping is as follows but can be changed by setting the TC_PRIOMAP option
    in <ulink url="shorewall.conf.html">shorewall.conf</ulink>(5).</para>

    <programlisting>TOS     Bits  Means                    Linux Priority    BAND
------------------------------------------------------------
0x0     0     Normal Service           0 Best Effort     2
0x2     1     Minimize Monetary Cost   1 Filler          3
0x4     2     Maximize Reliability     0 Best Effort     2
0x6     3     mmc+mr                   0 Best Effort     2
0x8     4     Maximize Throughput      2 Bulk            3
0xa     5     mmc+mt                   2 Bulk            3
0xc     6     mr+mt                    2 Bulk            3
0xe     7     mmc+mr+mt                2 Bulk            3
0x10    8     Minimize Delay           6 Interactive     1
0x12    9     mmc+md                   6 Interactive     1
0x14    10    mr+md                    6 Interactive     1
0x16    11    mmc+mr+md                6 Interactive     1
0x18    12    mt+md                    4 Int. Bulk       2
0x1a    13    mmc+mt+md                4 Int. Bulk       2
0x1c    14    mr+mt+md                 4 Int. Bulk       2
0x1e    15    mmc+mr+mt+md             4 Int. Bulk       2</programlisting>

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

    <variablelist>
      <varlistentry>
        <term><emphasis role="bold">BAND</emphasis> - {<emphasis
        role="bold">1</emphasis>|<emphasis role="bold">2</emphasis>|<emphasis
        role="bold">3</emphasis>}</term>

        <listitem>
          <para>Classifies matching traffic as High Priority (1), Medium
          Priority (2) or Low Priority (3). For those interfaces listed in
          <ulink
          url="shorewall-tcinterfaces.html">shorewall-tcinterfaces</ulink>(5),
          Priority 2 traffic will be deferred so long and there is Priority 1
          traffic queued and Priority 3 traffic will be deferred so long as
          there is Priority 1 or Priority 2 traffic to send.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">PROTO</emphasis> -
        <replaceable>protocol</replaceable></term>

        <listitem>
          <para>Optional. The name or number of an IPv4
          <replaceable>protocol</replaceable>.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>PORT(S) - <replaceable>port</replaceable> [,...]</term>

        <listitem>
          <para>Optional. May only be given if the the PROTO is TCP (6), UDP
          (17), DCCP (33), SCTP (132) or UDPLITE (136). A list of one or more
          port numbers or service names from /etc/services. Port ranges of the
          form
          <replaceable>lowport</replaceable>:<replaceable>highport</replaceable>
          may also be included.</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>ADDRESS - [<replaceable>address</replaceable>]</term>

        <listitem>
          <para>Optional. The IP or MAC address that the traffic originated
          from. MAC addresses must be given in Shorewall format. If this
          column contains an address, then the PROTO, PORT(S) and INTERFACE
          column must be empty ("-").</para>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term>INTERFACE - [<replaceable>interface</replaceable>]</term>

        <listitem>
          <para>Optional. The logical name of an
          <replaceable>interface</replaceable> that traffic arrives from. If
          given, the PROTO, PORT(S) and ADDRESS columns must be empty
          ("-").</para>

          <note>
            <para>INTERFACE classification of packets occurs before
            classification by PROTO/PORT(S)/ADDRESS. So it is highly
            recommended to place entries that specify INTERFACE at the top of
            the file so that the rule about <emphasis>last entry
            matches</emphasis> is preserved.</para>
          </note>
        </listitem>
      </varlistentry>

      <varlistentry>
        <term><emphasis role="bold">HELPER</emphasis> -
        [<replaceable>helper</replaceable>]</term>

        <listitem>
          <para>Optional. Names a Netfiler protocol helper module such as ftp,
          sip, amanda, etc. A packet will match if it was accepted by the
          named helper module. You can also append "-" and a port number to
          the helper module name (e.g., ftp-21) to specify the port number
          that the original connection was made on.</para>
        </listitem>
      </varlistentry>
    </variablelist>
  </refsect1>

  <refsect1>
    <title>FILES</title>

    <para>/etc/shorewall/tcpri</para>
  </refsect1>

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

    <para>PRIO(8), 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>