Proxy ip can be divided into http proxy, https proxy, SOCKS proxy and so on. For example, the ipidea proxy provides three protocols: http, https and SOCKS5. Each host has a unique ip address, but the same host may provide multiple services at the same time, and each service will occupy a port of the host. Agents of different protocols use different ports.

1, Http proxy: the most commonly used proxy, and its ports are generally 80,8080,3128, etc.

2.ssl proxy is also called HTTPS proxy, and the standard port of SSL is 443.

3.FTP proxy, its ports are generally 2 1, 2 12 1.

4.SOCKS agents are different from other types of agents. It only transmits packets, regardless of the application protocol. Its port is 1080.