[j-nsp] Block Skype and Ultrasurf using ScreenOS

[Giuliano Cardozo Medalha]

People,

Does anyone knows how to block ultrasurf and skype applications using 
only a SSG140 Box with DI license ?

Or it is only possible to block it using SRX650 with IDP license ?

Is it possible to configure ?

Where can I find the detailed signatures of this both applications ?

Thanks a lot,

Giuliano