Followed by the host IP address, file access path (that is, directory) and file name.

In network technology, ports have two meanings: one is physical ports, such as interfaces used by ADSL modems, hubs, switches and routers to connect other network devices, such as RJ-45 ports and SC ports.

The second is logical port, which generally refers to the ports in TCP and IP protocols. Port numbers range from 0 to 65535, such as port 80 for browsing web services, port 2 1 for FTP services and so on.

The meaning of software and hardware port, computer "port" is the literal translation of English port.

The exit of computer communication with the outside world. Among them, the ports in the hardware field are also called interfaces, such as USB ports and serial ports. Ports in the software field generally refer to communication protocol ports in the network for connected services and connectionless services. They are abstract software structures, including some data structures, basic input and output and buffers.

These ports are often used by hackers and some Trojan viruses to attack computer systems. The following is the introduction of computer ports and the brief methods to prevent being attacked by hackers.