After some further testing I believe the issue being observed is primarily that devices connected to the wifi network are unable to connect to internal resources direct via IP. For example when...

@Hank21 hi Hank, thanks for your response. ER605W has my ISP connection plugged into the WAN port, and a Windows PC and a Linux PC plugged into the LAN ports. Hardware version is ER605W v2.0 and...

Hi all, Recently got an ER605W and am having some unusual connection issues. It has been set it up with a fairly basic out of the box configuration, identical 2.4G and 5G wireless networks, one LAN...