Zyxel USG FLEX 100 Loopback Interface For IPsec remote access VPN

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younes
younes Posts: 3
First Comment
image  Freshman Member
in Security

Hello everyone ,

I have a Zyxel USG FLEX 100 pinging 2 ISP routers using a BGP session with a private interco. The Internet is already working with a NAT object.

I already have an IPsec remote access configuration, but it's not working because I don't have a public IP directly on the interface.

I'm not able to create a loopback interface on the router .

How can I solve this issue?

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All Replies

  • Zyxel_Melen
    Zyxel_Melen Posts: 5,169
    Zyxel Certified Network Engineer Level 1 - Switch Zyxel Certified Network Administrator - Switch Zyxel Certified Network Administrator - Nebula Zyxel Certified Sales Associate
    image  Zyxel Employee
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    Hi @younes

    In this scenario, you should set NAT rule on the ISP router since the USG FLEX 100 is behind your ISP router's NAT from the Internet.

    Zyxel Melen


  • younes
    younes Posts: 3
    First Comment
    image  Freshman Member
    edited March 4
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    Thank you, Melen, for your reply. I will check with the ISP if it's possible to do NAT on their side.

    Otherwise, is it possible to create a loopback interface on USG FLEX 100?

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