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    [IPSEC] NAT/NAT-T

    Scheduled Pinned Locked Moved IPsec
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    • O
      Onirika
      last edited by

      Hello, im setting up an IPSEC VPN between a pfSense and a Cisco 1841, the thing is between this two there is a Router that is NATing the pfSense trafic. What i did is redirecting port 500 to the pfSnese but im still having some problems. Do i need to set NAT-T ??

      My Set UP is:
      Phase 1 3DES,SHA1, pre-shared-key
      Phase 2 ESP-3DES, SHA1

      Well thats all, thx

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      • jimpJ
        jimp Rebel Alliance Developer Netgate
        last edited by

        NAT-T would be the way to go there, if you can. Otherwise you're almost guaranteed some kind of breakage.

        Note you also need to forward back the entire ESP protocol, not just udp/500 (and udp/4500 for NAT-T)

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