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Should we use the "Compress SSL VPN traffic" setting or not?

Josh Rogalski

We have a Sophos XG 550 rev. 2 unit.  We have 60 or 70users utilizing Sophos XG SSL VPN at different times to remote into our network. Almost all of them utilize Remote Desktop for the purpose after connecting.  We have some users complaining of lag or outright freezes in the remote desktop session. There is little information as to why this is happening as the XG isn't over worked at the times they have reported the problem and sometimes it will work for that user for days before acting up again. We have gotten conflicting information on whether to check the "Compress SSL VPN traffic" setting or not. 

Is anyone using this setting and if so did it actually help with remote desktop performance if your users are utilizing that program?  We already use UDP for SSL VPN and I want to know for sure if I should use this before I jump into checking it.  Any insight is appreciated.



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    Hi,

    There are known vulnerabilities on compression with OpenVPN since 2018, if you want to check more information about this, then look here:

    https://openvpn.net/security-advisory/the-voracle-attack-vulnerability/

    Josh Rogalski said:
    Is anyone using this setting and if so did it actually help with remote desktop performance if your users are utilizing that program?

    In reality it doesn't help a lot on performance, but be sure to talk with the support about this, they will have more information than me.

    Also, what version are you running on the XG 550? There are lots of known issue with performance that should be (hopefully) fixed by v18 MR3.

    Thanks!

    If a post solves your question use the 'Verify Answer' button.

    Ryzen 5600U + I226-V (KVM) v20 GA @ Home

    XG 115w Rev.3 8GB RAM v19.5 MR3 @ Travel Firewall

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  • 0

    Hi,

    There are known vulnerabilities on compression with OpenVPN since 2018, if you want to check more information about this, then look here:

    https://openvpn.net/security-advisory/the-voracle-attack-vulnerability/

    Josh Rogalski said:
    Is anyone using this setting and if so did it actually help with remote desktop performance if your users are utilizing that program?

    In reality it doesn't help a lot on performance, but be sure to talk with the support about this, they will have more information than me.

    Also, what version are you running on the XG 550? There are lots of known issue with performance that should be (hopefully) fixed by v18 MR3.

    Thanks!

    If a post solves your question use the 'Verify Answer' button.

    Ryzen 5600U + I226-V (KVM) v20 GA @ Home

    XG 115w Rev.3 8GB RAM v19.5 MR3 @ Travel Firewall

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