Slow OpenVPN speeds

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  • sxerik
    Junior Member
    • Jan 2025
    • 1

    Slow OpenVPN speeds

    Hello.

    During last few days we have implemented OpenVPN through pfsense Community Edition (version 2.7.2) on Proxmox 8.2. Our authentication is making request on our local LDAP and it is working perfect. Also VPN connection is making requests and cllients are able to connect.

    Problem which we are seeing now is very low speeds when VPN is connected, example:

    Our user having at home connection 1GB/100Mb. He run speedtest before VPN and gets next results:

    64f812d1-2fed-4bcb-bade-3c3de9528916-image.png

    After, when he connect to VPN (OpenVPN) he gets 5% of initial speed - network mode is UDP, on TCP is even slower:

    5a6e18f8-d6bd-45d0-9506-1feb7d4827c3-image.png

    During the installation we have go through documents with settings and we made next settings on Proxmox:

    a583c6a6-645c-4924-88c6-3a3ce6d1b8f7-image.png

    Also on pfsense we have disable next things:

    fd89551b-10da-474e-a566-59389b2bb93a-image.png

    If we run speedtest directly on pfsense server we are getting next results:

    2bdc1422-93d9-4d10-8382-5979a16118cd-image.png

    Please help us to make this works as it should!

    Thank you very much!!
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