@damianstelmach 

it's not open if you haven't opened these ports, my best guess is that you're testing against the wan ip from the lan on the same router.

  @MR.S 

I've tested from several independent networks. From each one you can get to the configuration panel despite remote access being disabled.

  @damianstelmach 

Try a scan from here

https://www.grc.com/x/ne.dll?bh0bkyd2

  @damianstelmach 

I do a scan from a ER706W with this result and no open port

  @MR.S Thanks, ports 22,23 closed, but 80 and 443 open despite remote access being OFF :(

  @damianstelmach 

Ok, do you use controller or stand alone?

why 80 and 443 is open is a mystery.

to get it stalth disable Block TCP Scan with RST, in controller you do that in network security and Attack Defense.

  @MR.S 

I've disabled but result is the same.