Trying to set up Site to Site VPN between LITE AX60 and USG FLEX 200

Hi @RDWild,

Kindly ask you to review the steps in this FAQ and confirm if your setup matches the instructions? (Although the FAQ uses the SCR model as an example, the configuration steps in NCC are essentially the same for the LITE AX60.)

Also, may I ask how you performed the ping test? For example, from which source did you initiate the ping, and what was the destination? (src. and dst.)

In addition, please confirm whether the “Use VPN” option is enabled on your LITE AX60 in NCC.

Finally, we would appreciate it if you could send us the configuration file of your USG FLEX 200 via private message so we can review the details.

[ATP/FLEX] How to download configuration file on Firewall Local WEB GUI? — Zyxel Community

Thank you for your cooperation!