What is a port in computer networking, what are the uses of port forwarding?

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A computer port is used to connect any device with a computer. Computer ports are used in 2 ways. First - internal port, in which the devices inside the computer are added to the inside port such as hard disk, drive, etc. The second external port, in which external devices are connected to the computer, such as a modem, printer, scanner USB, etc. The port acts as an interface between a computer and other computers or peripheral devices. Other parts of the computer such as monitor, mouse, keyboard and other devices connect to the main computer through the port and these ports are usually available on the motherboard.

The following ports are mainly available in a computer:

1. Serial port: Used for external modems and older computer icons
2. Parallel port: Used for scanners and printers
3. PS / 2 Port: Used for old computer's keyboard and mouse
4. Universal Serial Bus (USB Port): It can connect computers to all types of USB devices such as hard disk, printer, scanner, mouse, keyboard, etc.
5. VGA Port: It connects the monitor of any computer to its video card.
6. Power connector port: Used to connect a computer's power cable
7. Firewire port: Connects computers to camcorders and video devices, transfers more data at a faster speed.
8. Modem port: Connects the computer's modem to the telephone network.
9. Ethernet Port: Connects a computer to a network cable. It is used to connect computers to high-speed networks and the Internet.
10. Game port: It is used to connect a joystick to a computer.
11. DVI (Digital Video Interface) Port: Connects a computer's high-end video graphics card to a flat panel LCD monitor. It is very popular among video card manufacturers.
12. Sockets: These are used to connect the microphone, speaker and sound card to the computer.

You can take the CPU box of any computer and see all the ports behind it. To see the correct place of the port, you have to open the motherboard.