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<TITLE>1 Overview</TITLE>
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<H1><A NAME="SECTION00010000000000000000">
<SPAN CLASS="arabic">1</SPAN> <SPAN ID="hue43">Overview</SPAN></A>
</H1>

<P>
<SPAN ID="hue45">Tcpreplay</SPAN><A NAME="tex2html1"
  HREF="#foot362"><SUP><SPAN CLASS="arabic">1</SPAN></SUP></A> <SPAN ID="hue49">was designed to replay traffic previously captured
in the pcap format back onto the wire for testing NIDS and other passive
devices. Over time, it was enhanced to be able to test in-line network
devices. However, a re-occurring feature request for tcpreplay is
to connect to a server in order to test applications and host TCP/IP
stacks. It was determined early on, that adding this feature to tcpreplay
was far too complex, so I decided to create a new tool specifically
designed for this.</SPAN>
<P>
<SPAN ID="hue51">Flowreplay is designed to replay traffic at Layer
4 or 7 depending on the protocol rather then at Layer 2 like tcpreplay
does. This allows flowreplay to connect to one or more servers using
a pcap savefile as the basis of the connections. Hence, flowreplay
allows the testing of applications running on real servers rather
then passive devices. </SPAN>
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<BR><HR><H4>Footnotes</H4>
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<DT><A NAME="foot362">...Tcpreplay</A><A
 HREF="node1.html#tex2html1"><SUP><SPAN CLASS="arabic">1</SPAN></SUP></A></DT>
<DD><SPAN ID="hue47">http://tcpreplay.sourceforge.net/</SPAN>

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<ADDRESS>
Aaron Turner
2005-06-28
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