RT-AX55: No Access to Some URLs

[dennyg73]

The router is installed behind a Verizon 5G Home Internet WAN box in "passthrough" mode. I cannot get to certain URLs, including Verizon and ASUS Support unless, I connect via my cellphone hotspot. Is there a setting in the router, either enable or disabled, that may be the possible cause? Is anyone seeing this problem?

[jzchen]

BIOS version?  Is it updated to the latest, or did updating to the latest seem to cause this?

[dennyg73]

BIOS was an older version, but updating it did not change anything.

[Aureliannn_ASUS]

Hi @dennyg73 ,

based on your issue, may I ask have you make sure the router firmware is at the latest version?

You can refer to the following link:
RT-AX55｜WiFi Routers｜ASUS Global

Have you try to reset the router?

Please follow the steps in the following link:
[Wireless Router] ASUS router Hard Factory Reset - Method 1 | Official Support | ASUS Global

Could you please provide a diagram of your current network environment for our reference? 

Have you enabled any parental control features? 

Please reset all settings to default. Thank you.

[dennyg73 · Accepted solution]

First, I'm a tech and you can bet ALL the "easy solutions" have been tried, including starting with the router in default settings. Thanks for the suggestions ... Once I removed the router from the chain, now using just the Verizon 5G Home Internet box as a router, etc., the problem is gone. So, that would indicate it is a problem on the LAN side, with the router not passing outbound packets, or the Verizon box, not allowing them for some URLs. Verizon Engineering cannot figure it out, either. I have to assume most users of Verizon 5G Home Internet do not have a router behind the Verizon box, otherwise, there would be more requests for support?

Previous Network diagram: WAN > Verizon 5G box > ASUS RT-AX55 > LAN > networked devices

I'm now using a Netgear "switch" in place of the AX55 to connect LAN devices