I can Remote Desktop (RDP) to a Windows server on a custom TCP port on the local 192.168.0.X network but cannot RDP to it on the WAN port from an external PC or an iPad that worked before I started using the ER605. I have tried to access via the IP assigned to the WAN port as well as the No-IP machine.ddns.net Dynamic-DNS IP address. Doing an NSLOOKUP on the No-IP host name DOES match what the ER605 WAN port has assigned via PPoE. The Windows firewall is turned off on both the public and private settings. Again, this RDP via port forwarding was working fine with my CenturyLink router that I replaced with the ER605. I have correctly set up the Virtual Server settings on the ER605, tried rebooting the ER605. I have used various port checker tools on web sites that provide that service for free and it always says the port is closed.
I am very frustrated at this point. Thoughts on things to try?