Sophie: ksnuffle-2.2-6mdk i586

ksnuffle-2.2-6mdk.i586.rpm

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    <TITLE>KSnuffle: Triggers</TITLE>
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    <H3>
      <A NAME="ss4.4"></A>4.4 Triggers
    </H3>
    <P>
      KSnuffle provides triggers which can control when packets are
      displayed. Associated with each <I>sniffer</I> or <I>replayer</I>
      are two triggers, the <I>start</I> and <I>stop</I> triggers.
      These are displayed on the <I>Filters/triggers</I> page.
    </P>
    <P>
      Each trigger is a packet filter, and is constructed in the same
      way as the <A HREF="index-4.3.html">main packet filter</A>. Note,
      however, the the triggers are applied to packets independantly of
      the main filter (ie., a packet can be passed by a trigger even
      though it is not passed by the main filter).
    </P>
    <P>
      There are five trigger settings:
      <UL>
	<LI><B>All packets</B><BR>
	  All packets which are accepted by the main packet filter are
	  displayed. In this case both of the the triggers are ignored.
	</LI>
	<LI><B>Until stop</B><BR>
	  Packets are displayed until a packet is received which matches
	  the <I>stop</I> trigger. After this, no further packets are
	  displayed. The <I>start</I> trigger is ignored.
	</LI>
	<LI><B>From start</B><BR>
	  No packets are displayed until a packet is received which
	  matches the <I>start</I> trigger. After this, all packets are
	  displayed. The <I>stop</I> trigger is ignored.
	</LI>
	<LI><B>One shot</B><BR>
	  No packets are displayed until a packet is received which
	  matches the <I>start</I> trigger. After this, all packets are
	  displayed until one is received which matches the <I>stop</I>
	  trigger. From this point, no further packets are displayed.
	</LI>
	<LI><B>Repeat</B><BR>
	  This is the same as <B>One Shot</B>, except that after the
	  <I>stop</I> trigger is matched, the <I>sniffer</I> or
	  <I>replayer</I> returns to waiting for the <I>start</I> trigger
	  to be matched.
        </LI>
      </UL>
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