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Re: switched n/w
From: "Ivan Coric" <ivan.coric () workcoverqld com au>
Date: Wed, 08 Dec 2004 16:28:10 +1000

kaushal,

Yes you can sniff on a switched network.
you have a lot of reading to do!

http://www.sans.org/resources/idfaq/switched_network.php 

http://fux0r.phathookups.com/incoming/layer2sniffing.pdf 

http://www.google.com.au/search?hl=en&q=sniff+switched+network&btnG=Search&meta=

tools for sniffing, by no means an exhaustive list
http://ettercap.sourceforge.net/
http://www.monkey.org/~dugsong/dsniff/

Cheers
Ivan


Ivan Coric, CISSP, RHCE
IT Technical Security Officer
Information Technology
WorkCover Queensland
Ph: (07) 30066414 Fax: (07) 30066424
Email: ivan.coric () workcoverqld com au

kaushal <kaushal () rocsys com> 8/12/2004 4:30:24 am >>>
Hi,
   Iam a bit new to network securities.We have a switched network and
to
my knowledge a hosts' data cannot be sniffed by other host by runnning
tcpdump.But Iam receiving complaints from few users that their data is
being changed/manipulated.Is this possible?
How can I avoid this at the host level?Does this mean the server has
been compromised?Any help or pointer in this aspect would be highly
appreciated.

thanks in advance.

kaushal.






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