Changing admin panel port?

[Gavlan]

Hi there! Planning to setup a webserver on my Merlin firmware Asus router, and I wonder if there is way to keep the web server at port 80 whilst keeping the admin panel accessible via port 81 or another port? Thanks in advance

 

[mattiL]

Changing Authentication Method (in Administration > System) to HTTPS should work, it changes the port number used to 443.

Actually, I noticed that by selecting HTTPS you are able to choose any port you like.