Firefox----This address uses a port that is typically used outside of network browsing. For security reasons, Firefox canceled the request.

Firfox open a port other than 80, the following prompt will pop up:

"This address uses a port that is typically used outside of network browsing. For security reasons, Firefox canceled the request. ”。 Search by Internet, the solution is as follows:

Enter About:config in the Firefox address bar, and then right-click on a new string key network.security.ports.banned.override, add the port number you want to access the site to, and the value is that port number.
If there are multiple, separate the half-width comma, for example: 81,88,98

In the premise of ensuring safety, it also simplifies to write 0-65535. In this way, you can browse the website of any port.

Firefox----This address uses a port that is typically used outside of network browsing. For security reasons, Firefox canceled the request.