How to Block Skype

Is there a way to block Skype on a Cisco 501 Firewall.

FirstairAsked:
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lrmooreCommented:
Not really.. Heres a good analysis, if rather dated, of how Skype works
http://www1.cs.columbia.edu/~library/TR-repository/reports/reports-2004/cucs-039-04.pdf

Blocking it requires more intelligence than the PIX 501 has on its own. Cisco routers can use NBAR to block it.
http://ciscotips.wordpress.com/2006/06/07/how-to-block-skype/

Are you:
A) looking for a solution to block skype users
B) wondering if your firewall can be blocking your skype use?

Is this related to your previous question about the VPN client?
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FirstairAuthor Commented:

I had a feeling the 501 was able to.......

I am looking at it to block skype users and no not related to the VPN client.

Thanks
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