A port is a logical communication endpoint that allows various applications on a computer to send and receive data. In networking technology, a port refers to a number that is assigned to a specific application or service on a computer, used to control traffic to that application or service.
Ports are typically represented by a 16-bit number and can range in value from 0 to 65535. The first 1024 ports are known as well-known ports and are reserved for specific services. For example, port 80 is commonly reserved for HTTP (Hypertext Transfer Protocol) used for web traffic, while port 443 is typically reserved for HTTPS (HTTP Secure) used for encrypted web traffic.
Ports are often used in conjunction with the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP), both of which are protocols in the Internet Protocol suite (TCP/IP). TCP is a connection-oriented protocol suite, while UDP is a connectionless protocol suite. Both protocols use ports to facilitate data communication between different applications.
