I've been asked if I can use our Palo's to allow skype messaging only and block users to make calls and send/receive files using Skype. I already seen some discussion saying that this is not possible but i'm wondering if paloalto comes with something new in the new PAN OS 5 and 6 releases since those discussion are from 2012 and 2013.
As per my understanding Skype encrypts all its outbound traffic, so once you allow outbound skype, you can no longer control file-sharing, voip inside the tunnel.
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