do not allow protocol analyzers

We have firewalls and Cisco switches. Is it possible to not allow the protocol analyzers to use by employees on their work stations?

Said

If an employee moves to a bad site, several bad things could happen including the installation of any software not authorized - which could include a packet sniffer. But I do not think that the routers or switches can detect the presence of software like that on the workstations.

And the duplicated TCP sequence number does not particularly indicate the presence of a packet sniffer. A packet sniffer just listens to the traffic and not mind the traffic. Duplicated TCP sequence numbers are more likely caused by something that requires that the retransmission of TCP (lost packets or incoming packets end) packets.

HTH

Rick

Tags: Cisco Security

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