A Port is a communication endpoint in networking through which information flows from a program on the computer to another computer on the network. Think of a port as a docking point where all private boats are docked.
Ports are numbered, and each port is associated with a distinct service. They allow computers to differentiate between different kinds of incoming and outgoing traffic over the same network connection. Some ports are reserved for specific protocols, such as HTTP (HyperText Transfer Protocol) uses port 80, FTP (File Transport Protocol) uses port 21, emails received on a local computer use TCP port 25. Each host can have 65535 ports per IP address, and the use of these ports is managed by IANA (Internet Assigned Numbers Authority).
