Server port: With the development of computer network technology, the original physical interfaces (such as keyboard, mouse, network card, graphics card and other input/output interfaces) can no longer meet the requirements of network communication. As the standard protocol of network communication, TCP/IP protocol solves this communication problem.

Integrating TCP/IP protocol into the kernel of the operating system is equivalent to introducing a new input/output interface technology into the operating system, because an application program interface called "Socket" is introduced into the TCP/IP protocol. With such interface technology, computers can communicate with any computer with Socket interface through software. Port is also called "socket interface" in computer programming.

Extended data:

The server can be one of the most important reasons for Web server, FTP server, mail server, etc. Various services provide different services through different ports. For example, TCP/IP protocol stipulates that Web uses port 80, FTP uses port 2 1, and mail server uses port 25. In this way, the computer can communicate with the outside world without interference through different ports.

Baidu Encyclopedia-Server Port

Baidu encyclopedia-port