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Not able to block Ultrasurf , flash vpn , cyber ghost

Abhishekk_01
Dear all,

I have sophos SG 135 and using the same on transparent mode.

I am also using application control to block facebook and whatsapp and application.

Somehow users are accessing it through ultrasurf or flash vpn , considering this i have blocked proxy / vpn category from application control.

Still users are able to access this VPN.

any idea to block this.


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  • 0 in reply to gc1111
    Hi Christian, 

    Your workaround still cannot block the latest ultrasurf 15.01. Instead, I isolated the issue and noticed on the logs that there were accesses to mail.google.com. So, I added the category "Web Mail" on the https scanning and suddenly, ultrasurf cannot access their webservers. 

    Thanks, 
    Gon
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