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New Member

Blocking Ultrasurf

Hi guys,

Is it possible to block ultrasurf with ISR routers or ASA firewall?

help me please

Thanks

Fabio

2 REPLIES
Cisco Employee

Re: Blocking Ultrasurf

Ultrasurf is all https so you won't be able to use acls on the ASA to block it while permitting legitimate traffic.  Cisco Ironport Web Security Appliances can do HTTPS proxy and it may be able to block these HTTPS connections.

New Member

Re: Blocking Ultrasurf

In ASA this is such feature as Regular Expressions with MPF (regexp)

may be it help you.

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