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    OpenVPN not working properly after switching to 2.0

    Scheduled Pinned Locked Moved OpenVPN
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    • A
      alexandru.ast
      last edited by

      Hello,

      I had installed two new virtual machines with pfsense 2.0, with the same settings as my older ones.
      Between them, there is a TCP OpenVPN tunnel through a proxy, and all traffic from that site is routed through the tunnel.
      On my old config based on 1.2.3, I had no problems, it did not require any special tweaks on the MTU.
      When using 2.0, the tunnel gets up just fine, samba traffic works ok at 1MB/s between sites but when trying to browse the web the tunnel breaks.
      I also tried pinging, ping -l 1376 crashes the tunnel, -l 1375 is ok.
      Now, I have tried different settings for the tun-mtu: tun-mtu 1300 is ok for ping -l 1376, but web traffic crashes the tunnel. Also, ping -l 5000 crashes the tunnel too.
      Trying to set MTU 1400 on the network interfaces, web browsing is ok for 90% of the sites - gmail, yahoo, msn.com are not working, ping -l 5000 also crashes the tunnel.

      Any clues?

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      • A
        alexandru.ast
        last edited by

        It works after changing the MTU only for the wan interface facing the proxy to 1200, 1300 won't work. Weird thing…

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