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How to use ipgrab

Posted on 1998-07-14
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Last Modified: 2012-06-27
I am trying to use ipgrab to determine what a machine does to identify itself on a network and also to find out what happens at the frame/packet level when you try to access a site on the local network or an outside host.  My question is if anyone knows the commands that will enable me to do this.  For example, I only want to get packet  information when I try to access a site.  Right now I get packet info about not only myself trying to access sites but also other people trying to access my site.  I have tried the various command line options and can't seem to get what I want.  I would appreciate any help.  Thank you...
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Question by:amj120397
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by:mikegrb
ID: 1019835
What OS do you have?
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by:amj120397
ID: 1019836
I am runnning it in the linux OS.
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mikegrb earned 600 total points
ID: 1019837
My suggestion is to use TCPDUMP (most likley similiar to ipgrap) in conjunction with a perl script or grep parsing output.  It would seem that the perl script would be a better way to go.  You might try asking in the perl area by posting example output and saying what you are trying to do.

For TCPDUMP look at:
ftp://ftp.ee.lbl.gov/tcpdump.tar.Z

Additionaly there is a tool that may do what you want that analyses the output from TCPDUMP and it is availible at:
http://www.ipsilon.com/~minshall/sw/tracelook/tracelook.html
Also check:
http://www.ipsilon.com/~minshall/
The parent page as it has some additional programs for analysing TCPDUMP output

Lastley:
If you want to run TCPDUMP at command line use:
# tcpdump -D -s 99999
to dump the Data of the packets to 99999 bytes (default is between 60 and 80)
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