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slow rdp through the XG

Luc_GLLM

Hi everyone, I have a strange behavior with a rdp connection.
The RDP server is located externally and a PPTP vpn must be established to connect.
Connecting from any computer in my office that is protected by a sophos XG v18 the RDP connection is very slow and hangs very often, with the same computers if I use the hotspot of the phone the RDP connection is very fast.
The ping to the remote server is always stable with 40 ms of latency.
Hoping it was a problem with the internet provider I tried to connect a computer directly to the router excluding the firewall but in this way it works well, so obviously the problem is the firewall.
I made an allow rule that excludes all AV/WEB/IPS/APP controls, but the situation does not improve.

I honestly don't know what to check and what this behavior may have caused.



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  • +1 suggested

    Hello @Luc_GLLM,

    Since it is not very clear, i am assuming that the PPTP is not configured on the XG, but on any other router/Firewall and the clients connect the PPTP via Sophos XG

    Have you enabled any DoS Protection on XG ? if yes, please try disabling it to see if the problem still persists or not.
    Also, are you using SSL / TLS inspection on the XG ? If yes, may want to try by disabling it / exclude the relevant traffic and see if that helps.

    Let me know the outcomes once you have tried the above steps.

    Jump to answer
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