1. First, register the user name and password on the website that provides free domain name registration, such as peanut shell (no fixed IP address is required).

2. With the newly registered user name and password, enter Peanut Shell official website and apply for a free dynamic domain name.

3. Enter the router settings page, select "Peanut Shell" as the DDNS free domain name provider, and fill in the registered user name, password and dynamic domain name of Peanut Shell in turn. Then wait for a small array and the route will load automatically.

4. In the port mapping item, open and select the port to be mapped, such as 80. Then save and restart the router.

5. When accessing the public network remotely, the input format in the browser is:

:80

Just access the router.