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Not able to block Ultrasurf , flash vpn , cyber ghost

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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  • Hi,
    what firewall rules do you have in place? What are your exceptions in the webproxy? Check you logs to find out how they are bypassing the webproxy?

    Suggest you put drop firewall rules at the top of the list for ports 80, 81, 8080 and 443.

    ian M

    XG115W - v20.0.2 MR-2 - Home

    XG on VM 8 - v21 GA

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