@MrAlab if it doesn't work, it must be something with NAT loopback, I have an ER8411 and it works very well. I don't really have an answer to the problem you have, the only thing I have done is as...

@ticedoff8 yes, you can have server and client at the same time. Nordvpn, probably not. Omada is not very compatible with 3rd party OpenVPN providers. Omada routers are mostly built for Omada routers...

@RamyFahmy no-ip will not solve your problem, no-ip gives you a public ip on the ISP router if you do not do this. In short. you can try to remove the ISP router and connect the Omada router directly...

@JamesLu https://community.tp-link.com/en/business/forum/topic/682406

@RamyFahmy it is quite simple. I myself use no-ip on several sites. it works well. 1. make sure you have a public ip on the WAN interface 2. there must be different LAN IP networks on site-a and...

@Inforbits Ok, my NAT looks like this and the portal redirect look like that