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Re: Tcpdump data collection


From: Harry Hoffman <hhoffman () ip-solutions net>
Date: Tue, 02 Dec 2008 21:32:04 -0500

Check out argus http://www.qosient.com/argus/

It can do exactly what you what.

Cheers,
Harry


On Tue, 2008-12-02 at 17:19 -0800, Subba Rao wrote:
Hello,

I want to collect data on a network and map the data flow and system/port traffic. There are 2 scenarios of data 
collection here.  The first is to collect IP traffic only.  In this method I do not want the data portion of the IP 
packet (need IP address, source/destination ports etc).

The second is to collect traffic that will show all the routing protocols (non-IP) used on this network.  Today while 
collecting the data, I saw several HSRP packets.  I don't know what portion of the packet is sufficient to capture 
for this purpose.

I used the "-s 0" option on tcpdump which captures the whole packet.  That is making the dump file large.  Any help 
with the filters is appreciated to capture the non-data portion of the packets.

Thank you in advance.

Subba Rao



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