I agree - I used to run a grey market Cisco 515 on a DS3, and it was tough filtering out good from bad manually. I ended up blocking whole blocks of IP's and ports to get rid of IM. Packet sniffing tools help out a lot, similar methods to sw firewalls - they determine what kind of app is running
Is it not curious that at the same time that AOL-Time Warner announces their own Skype-like program that a device specifically designed block out Skype appears? Just coincidence I'm sure.
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