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North American Network Operators Group

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RE: sniffer/promisc detector

  • From: Wojtek Zlobicki
  • Date: Fri Jan 16 18:12:48 2004

Since all sniffers I know of are passive devices, there really shouldn't be
a way to track one down. From a Cisco standpoint, if I were mirroring a
port, and had a sniffer mirroring the sniffer port, I would see traffic of a
unicast nature with multiple unicast MAC destinations destined at a
swithport with only one MAC address cached. 

-----Original Message-----
From: owner-nanog@merit.edu [mailto:owner-nanog@merit.edu] On Behalf Of
Gerald
Sent: Friday, January 16, 2004 5:35 PM
To: nanog@merit.edu
Subject: sniffer/promisc detector


Subject says it all. Someone asked the other day here for sniffers. Any
progress or suggestions for programs that detect cards in promisc mode or
sniffing traffic?

Gerald







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