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How to block VPN software from clients

CoDeR
Hi,
I have an Astaro ASG 420 at work, I have setup the rules to disallow certain applications (IM,Chat) and some non-work related websites (facebook, twitter, forums) but I discovered that some users are using VPN software (hotspotshield) to bypass the rules. 

How can I detect and/or block such traffic and applications ? 

regards,


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Parents
  • 0
    What mode is Web Filtering in - Transparent?

    What Firewall rules do you have allowing traffic from "Internal (Network)" out?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
Reply
  • 0
    What mode is Web Filtering in - Transparent?

    What Firewall rules do you have allowing traffic from "Internal (Network)" out?

    Cheers - Bob
     
    Sophos UTM Community Moderator
    Sophos Certified Architect - UTM
    Sophos Certified Engineer - XG
    Gold Solution Partner since 2005
    MediaSoft, Inc. USA
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