USG 100 Flex - How to change VPN Port?



On my USG, I have 3 VPN in service. Is it possible to change port for one VPN? (500,4500 → 54500,54600 for example).


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  • PeterUK
    PeterUK Posts: 2,749  Guru Member
    First Anniversary 10 Comments Friend Collector First Answer
    edited October 2023

    No its not possible to change IKE ports Unless you add more hardware at both ends not 100% sure Zyxel can do it but it be like this.

    Zyxel USG > port 500 > another NAT router change port 500 to 54500 > internet > another NAT router change 54500 to 500 > Zyxel USG sees 500

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