@atc Good morning, Exactly the same problem here. We have 5 sites, all connected over VPN to an OC200 controller. Fantastic system that really does the job. Cannot praise the TPLink people enough....

@MR.S VPN Tunnel goes straight from ER605 to OC200 controller. Endpoint is the controller itself. In picture above you can see that all ports on the controller are open. In that post the same problem...

Caption @Tedd404 no This is what a port scan says on the device side. all seems to be correct.

@MeninGate Apparently other people have the same problem: https://community.tp-link.com/en/business/forum/topic/581692

@Tedd404 Hi Tedd, Many thanks for the useless answer. I have 15 EAP660 HD(EU) v1.0 access points on 3 sites connecting via ER605 v2.0 over VPN to the OC200 controller in our office. Everthing is...

I can't upgrade my TPLink ER605 V2 to the latest firmware 2.1.2 I tried this topic: https://community.tp-link.com/en/business/forum/topic/559150 but nothing works. As advised in the article I...