OpenVPN and uPNP issues on firmware 2.6.3
I have 2 QNAP NAS servers use wire to connect to Amplifi HD, the uPNP feature does not work at all even I use the build-in feature to force NAS server try to apply uPNP setting to Amplifi HD. The Amplifi HD is connected to Verizon FIOS ONT and that's the way I was used to do when I was still using my Verizon router. Since nPNP is not working, I manually set the port forwarding rules. Proxy service, no problem. PPTP connection, no problem. OpenVPN, working and not working.
It's working if the device is under same network, even I use dynamic DNS service to connect to it, there's no problem. But if I use my phone or try to connect from my office, OpenVPN is not working at all. This is a firmware issue, not Internet nor NAS problem.
got hardware nat enabled ?
Hardware NAT was disabled.
Also, if I change back to use my old router to connect Verizon ONT, no problem.
ONT - Amplifi HD - NAS, OpenVPN is not working
ONT - Verizon router - NAS, OpenVPN is working
Solution is change UDP 1194 to TCP 1194.
Even hardware NAT is on the connection can still be established.