I can't configure the Zywall VPN 300 for VPN L2TP

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  • Andrei_Mazilu
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    The port forwarding config is made on ISP Router and i have made that NAT Rule also
  • Andrei_Mazilu
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    I don't think is wrong if the message is received and the only thing that stops is because of a proposal mismatch, and the key group is the same.
  • Andrei_Mazilu
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    Thank you Stanley for your help everything works fine now.
  • Zyxel_Stanley
    Zyxel_Stanley Posts: 1,367  Zyxel Employee
    First Anniversary 10 Comments Friend Collector First Answer
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    Hi @Andrei_Mazilu

    As your environment, WAN interface of VPN300 is public IP address.

    So port forwarding on ISP router is unnecessary.

    It’s good to know your issue has resolved. :+1:

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