NAME¶
tcpdump2xplot
—
converts tcpdump output to xplot input for analysis
SYNOPSIS¶
tcpdump2xplot |
[-?] [-c]
[-help] [-list[filename]]
[-plot[filename]] [-q]
[-r] [-s]
[-t] [-w] |
DESCRIPTION¶
tcpdump2xplot
takes the output of
tcpdump -tt -S ...
and plots it in terms of sequence-number versus time, with other info displayed
(e.g., the TCP window, acks, etc.).
OPTIONS¶
-?, -help prints a help message.
-c, ``cumulative'', adds all the data coming from a
server. -list[filename] prints the list of generated
plot files to filename. -plot[filename] plots the
packets from filename. The filename may be built out of
a hostname and port number, e.g.: abc.def.com:1234.
The default is
fromhost:fromport-tohost:toport.xplot
where fromhost, fromport,
thost, toport are extracted as
conversations from the tcpdump
data.
-q means "quiet" --- no visible output.
-r means use relative sequence numbers.
-s means break up conversations on TCP syns.
-t convert time to decimal number of seconds.
-w plots the TCP window.
BUGS¶
tcpdump2xplot
may not deal properly with output from
tcpdump that is not TCP. Either filter to only tcp or be careful.
HISTORY¶
The tcpdump2xplot
has been contributed by
xplot.org
users. Thanks to Garret Wollman for
contributing the original tcpdump2xplot.pl script and thanks to Eric
Prud'hommeaux (@ w3.org) for making
<http://www.w3.org/pub/WWW/config/tcpdump2xplot.pl> available, a much
improved version. The one included here is a slightly improved version of
Eric's.