Hardware NAT breaks VPN


  • I have a VPN/proxy running on my NAS and if I enable hardware NAT I cannot reach it.

    The NAS has a remote access app, and even with hardware NAT turned on I can access the NAS remotely. But the standard port forwarding to the VPN service will not work.

    Turn off hardware NAT and I can instantly access the VPN again.

    The NAS uses port 5000 and the VPN service uses the standard L2TP ports.

    Any ideas?


  • having same issues with openvpn, thanks for posting this 😄


  • can confirm that disabling hardware nat makes the vpn service works

    ping @UBNT-Gunars


  • If I had to bet I would say that it is handling port forwarding differently between the two methods.


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