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OpenVPN Authenticate/Decrypt packet error: packet HMAC authentication

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  • N
    nijaz
    last edited by Jun 27, 2016, 2:47 PM Jun 27, 2016, 1:51 PM

    Hi all,

    First I want to apologise if this has previously been asked. I have had trouble locating the info required!

    I have one pfSense server with local IP 172.16.0.1
    1 pfSense clients with local IP-s 172.16.1.1
    They are connected together over OpenVPN site-to-site (Shared key, BF-CBC 128 encryption algorithm)
    When i setup connection Open VPN tunel works for couple minuts and then it crashes.

    Looking at server log i see this massage:
    Process: openvpn
    PID: 21576
    Message: Authenticate/Decrypt packet error: packet HMAC authentication failed

    I posted screenshot from server log and client log
    How to resolve thiss error
    Thanks

    Klijent.JPG
    Klijent.JPG_thumb
    Server.JPG
    Server.JPG_thumb

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    • N
      nijaz
      last edited by Jun 30, 2016, 6:31 AM

      Please…
      Anyone?

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      • J
        jimp Rebel Alliance Developer Netgate
        last edited by Jul 6, 2016, 5:45 PM

        Something between the two does not match. Most likely you didn't copy the shared key from one to the other so they are using different keys.

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        • W
          Wisiwyg
          last edited by Jul 25, 2016, 4:50 PM

          I'm having the same problem… "Authenticate/Decrypt packet error: packet HMAC authentication failed"

          and I've reviewed and re-input the keys a couple of times. I  believe this may be related to the recent reset of all of the PIA keys/ports/ciphers due to the Russian activity.

          Does anyone have a 'how-to' that includes the most recent changes? TIA.

          Overkill - i5 quad, 3.1ghz, 8gb, 240gb SSD, dual & single Intel NICs

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