I purchased the AR750S and have attached the LAN port to my existing ASUS router as a Secondary WAN. From the default configuration on the AR750S, I have set language, Admin password, and disabled Wi-Fi. Using my iPhone, enabled with Personal Hotspot, I have been successful in having this work as intended in the following two configurations:
- Connecting the iPhone via USB to the AR750S, configured as Internet Tethering, and trusting the connection on the iPhone.
- Connecting the iPhone via Wi-Fi to the AR750S, configured as Repeater.
The second configuration is my preferred solution, but I believe I am double NATing (once on the AR750S and again on the ASUS), which could cause problems. I believe putting the AR750S into bridged mode by setting Network Mode to Extender is the solution. Once doing this, I can no longer access the Admin Panel on the AR750S.
After searching this forum, I have tried 2 different LAN IPs on the AR750S. The default 192.168.8.1 and the iPhone 172.20.10.X, without success. This is with ethernet cable plugged into the LAN port on the AR750S and manual network configuration on the laptop. I have also tried opening port 80 on the AR750S.
When in Tethering or Repeater, I can scan the default IP range and see the AR750S LAN IP with ports 80, 443 open. When in Extender, I can scan the default or iPhone range and see no IP with port 80 open.