Skype is crap, but really good in going trough firewalls so if you want to block this and you're company then prepare rules about using of ICT for users and they must sign it. If they break those rules then use sanctions against them. Of course that this will not stop experts. Or if you want to be friendly you can give them option that they can use Ekiga or similar app, but not Skype because of security implications.
But in fact if they are capable of using searching they may find this page https://imo.im where is Skype available trough Flash. On Wed, Nov 4, 2009 at 8:48 PM, David Taveras <d3taveras3...@gmail.com> wrote: > Greetings, > > Can PF be programmed to block skype ? Provided we have port 80 and 443 > Opened to the world, and perhaps DNS port too... skype finds any open > port to connect to. > > Regards, > David Taveras