@cdnhk If you portforward you can add alowed ip in portforward roule.

@IanCC I have no access to any engineer so we have to ping @Clive_A this solution with PVID on port is not a god solution, look like this partially works, my computer worked but not routers that I...

@IanCC Yes I do some LABings on this now. there is some strange things that happened. I do testing with a Unifi UDR and a ER605v2, try connect wan on router to LAN on ER707. PVID is 50 so router...

@IanCC but there is something wrong, I tried to connect a UNIFI UDR, it got IP but no internet. I had to specify in the WAN settings on the UDR that it should use VLAN 50 even though the PVID was set...

@IanCC I made an exact similar setup. it worked from my pc right away. so there must be something that blocking the internet for you. but what it may be is a mystery. Do you have any VPN policy...

@IanCC yes this is a weird error, everything looks right. which IP does the PC get when you connect it