RT-AC66U Merlin 376.44 DDNS No-IP Issue

[GregW]

Greetings,

I ran into an interesting issue with DDNS last night. I created a new account on NO-IP last night and pointed it to my routers external IP address. When I entered my network alias into the browser the network redirect pointed back to my RT-AC66U router and prompted me to login to the router.

That all seems correct, except that I have Enable Web Access from WAN turned off.

Am I misinterpreting what the Enable Web Access from WAN feature does?
I had thought that the router would not respond with a login prompt when this feature was turned off.

If anyone can help me understand how this works I would appreciate the help.

Thank You.

Greg Williams

 

[sinshiva]

nothing to worry about, normal behavior with the help of nat loopback. you can verify you aren't exposed with any external firewall test like ShieldsUp

 

[GregW]

Thank you for your help, I'm not sure that I understand everything.

Are you saying that if I hit the redirect from an external network the router would not respond with a login prompt?

It definitely concerned me when it responded with a login last night. I eventually deleted the redirect from No-IP and turned off the DDNS service in the router to make sure I was secure.

Thanks

 

[sinshiva]

Are you saying that if I hit the redirect from an external network the router would not respond with a login prompt?

correct.

..

 

[GregW]

Thank you, I set the redirect back up and tested it from within my network and from and external connection.

It is indeed not accessible from outside my network.

Thank you for helping me understand how this works.

Greg