How Can I block Ultrasurf?

[JIMT84]

Hi Actually I have a FW 3com X506 and IPS (600E) somebody knows how I can block the UltraSurf traffic?

[santocuba]

what port is used?, can you edit a rule that denied this trafic

[cenk sasmaztin]

ultrasurf use port 80 or any other open port

therefore difficult to prevent 

don't have any filter tipping point device and you can't prevent any firewall.

There are a lot of blocking method on the forum web site

but it does not work 

[cenk sasmaztin]

plese test this filter
4837: HTTP: GhostSurf Proxy HTTP Access

[gafrol]

You might have a chance with the AppDV Subscription to block this kind of traffic.