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Cannot communicate from server to client over OpenVPN S2S connection

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  • D
    dimskraft
    last edited by dimskraft Mar 2, 2023, 9:56 PM Mar 2, 2023, 9:56 PM

    I have the following S2S configuratiion

    999ffb12-c7db-4941-86e3-dcf1c19c68d2-image.png

    Unfortunately, I can connect (ping, netcat, ssh) only from client to the server, but not back.

    If I can ssh normally, it means that firewall is not the problem, right? Since packages are travelling in both directions?

    Also I can netcat from server to client by a tunnel address of 192.168.27.2, i.e. run

    nc -l 1234
    

    on client, and

    nc 192.168.27.2 1234
    

    on server and then I see the communication.

    What does it mean? How to diagnose the problem?

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    • D
      dimskraft
      last edited by Mar 3, 2023, 7:53 AM


      I made a mistake, I can't connect backwards by any means. But I can see ping traffic with packet capture on a client when pining it from server.

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