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Add a full example of mark testing

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git-svn-id: https://shorewall.svn.sourceforge.net/svnroot/shorewall/trunk@3827 fbd18981-670d-0410-9b5c-8dc0c1a9a2bb
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teastep 2006-05-01 20:21:20 +00:00
parent b5f0f5a50d
commit 110e46465e
1 changed files with 37 additions and 5 deletions
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42
docs/traffic_shaping.xml
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@ -167,7 +167,7 @@
<firstterm>marking</firstterm> packets. Packet marks have a numeric
value which is limited in Shorewall to the values 1-255. You assign
packet marks to different types of traffic using entries in the
<filename>/etc/shorewall/tcrules</filename> file. </para>
<filename>/etc/shorewall/tcrules</filename> file.</para>
</listitem>
</orderedlist>
@ -176,11 +176,11 @@
traffic (packets to which you have not assigned a mark value in
<filename>/etc/shorewall/tcrules</filename>) is assigned.</para>
<para>Netfilter also supports mark value on each connection. You can
<para>Netfilter also supports a mark value on each connection. You can
assign connection mark values in
<filename>/etc/shorewall/tcrules</filename> or you can copy the current
packet's mark to the connection mark (SAVE) or you can copy the connection
mark value to the current packet (RESTORE).</para>
<filename>/etc/shorewall/tcrules</filename>, you can copy the current
packet's mark to the connection mark (SAVE), or you can copy the
connection mark value to the current packet's mark (RESTORE).</para>
</section>
<section>
@ -587,6 +587,38 @@ ppp0 6000kbit 500kbit</programlisting>
1:110 0.0.0.0/0 0.0.0.0/0 tcp 22
1:110 0.0.0.0/0 0.0.0.0/0 tcp - 22</programlisting>
</example>
<example>
<title></title>
<para>Mark all ICMP echo traffic with packet mark 1. Mark all peer to
peer traffic with packet mark 4.</para>
<para>This is a little more complex than otherwise expected. Since the
ipp2p module is unable to determine all packets in a connection are
P2P packets, we mark the entire connection as P2P if any of the
packets are determined to match. We assume packet/connection mark 0 to
means unclassified.</para>
<programlisting>#MARK SOURCE DESTINATION PROTOCOL PORT(S) CLIENT USER/ TEST
# PORT(S) GROUP
1 0.0.0.0/0 0.0.0.0/0 icmp echo-request
1 0.0.0.0/0 0.0.0.0/0 icmp echo-reply
RESTORE 0.0.0.0/0 0.0.0.0/0 all - - - 0
CONTINUE 0.0.0.0/0 0.0.0.0/0 all - - - !0
4 0.0.0.0/0 0.0.0.0/0 ipp2p:all
SAVE 0.0.0.0/0 0.0.0.0/0 all - - - !0</programlisting>
<para>The last four rules can be translated as:</para>
<blockquote>
<para>"If a packet hasn't been classifed (packet mark is 0), copy
the connection mark to the packet mark. If the packet mark is set,
we're done. If the packet is P2P, set the packet mark to 4. If the
packet mark has been set, save it to the connection mark."</para>
</blockquote>
</example>
</section>
<section>