@Dany_1968 You can try L2TP VPN

@JonathanVieira From my experience, the answer is No. Tplink router will not save existing settings. Once you Forget the router from the controller, the router will reset itself.

@Ctims There is IP-Port option available on Controller, but it only apply to Switch ACL, means you will need an Omada Switch to make it work.

@debruina Is there any Access Control settings on your router?

@good2see Yes it can work. However it means the CPEs will be on WAN side of your router. And if there is some issue happen on the CPE, it will be hard to do troubleshooting since you cannot login the...

@loopin3 Your ER605 WAN IP is private IP? If so, then port forwarding will not work. You will also need to open port 1194 on the front router, for the ER605 WAN IP 192.168.2.2 .