How to set up and use a proxy on Firefox?

Before configuring, please obtain the IP.

Refer to the tutorial: [Two IP Extraction Methods]

1.Open Firefox, click on the three horizontal bars in the upper right corner, open "Settings."

2.Type "proxy" directly into the search box or find Network Settings at the bottom of the "General" tab on the left.

3.Select the manual proxy configuration box, fill in the endpoint and port information in either the HTTP or SOCKS5 proxy field, click OK.

4.To verify if the proxy is working correctly, open a new window and check the IP to see if it matches.