@Clive_A Hello, from the external network 10.17.21.1/24 everithing is OK, but from internal network I can't connect. In ER605 v1 and v2, I can connect to the openvpn server from both internal and...

@Clive_A Yes, that's right, there is a replacement device in place of the Er707-M2 router in question. In the original setup, the router has a real IP, but I can't stop the service to test everything...

As I mentioned in ER605 therad: https://community.tp-link.com/en/business/forum/topic/640894 An OpenVPN log will be very helpfull ...

[May 25, 2024, 17:11:19] OpenVPN core 3.8.2connect3 win x86_64 64-bit OVPN-DCO built on Dec 1 2023 16:39:43 ⏎[May 25, 2024, 17:11:19] Frame=512/2112/512 mssfix-ctrl=1250 ⏎[May 25, 2024, 17:11:19]...