This is a list of TCP and UDP port numbers used by protocols for operation of network applications. The Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) only need one port for bidirectional traffic.

Apr 15, 2024 · Ports are assigned sequential numbers from 0 to 65535. Some of these codes are standardized, meaning they are assigned to certain uses. Since code numbers are universally recognized and permanently assigned, these standard ports are also known as well-known ports.

May 10, 2024 · Use this comprehensive common ports cheat sheet to learn about any port and several common protocols. It also includes a special search and copy function.

Sep 10, 2023 · Well-known port numbers are port numbers for Transmission Control Protocol (TCP) or User Datagram Protocol (UDP) that have been assigned to specific TCP/IP applications or services by the Internet Assigned Numbers Authority (IANA).

May 31, 2024 · Common Well-known/System Ports in Computer Networking. Well-known network ports range from 0 to 1023. These ports are assigned by IANA and listed in RFC 1700. On most systems they can only be used by system (or root) processes or by programs executed by privileged users.

Jul 2, 2020 · These ports speak to official ports for most notable system administrations and many common network services. HTTP usually communicates at port 80, while FTP at port 21. In most working frameworks/OS, administrative-level access is expected to begin a program that tunes in on a system port.

Oct 20, 2023 · What Are Well-Known/Systems Ports? Port numbers that fall into the category of well-known/system ports include numbers between 0 and 1023. IP protocols use them for TCP, UDP, Telnet, and FTP.

Ports 0 to 1023 are Well-Known Ports. Ports 49152 to 65535 are Public Ports. A comprehensive list of commonly used network port numbers and a description of service provided by each.

May 1, 2020 · The Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) each use port numbers for their communication channels. The ports numbered 0 through 1023 are the well-known system ports, reserved for special uses. Port 0 is not used for TCP/UDP communication although it used as a network programming construct.

Sep 26, 2024 · There are 65,536 possible TCP ports, ranging from 0 to 65,535. Ports 0 to 1023 are considered well-known or system ports, while ports 1024 to 49151 are registered ports. Ports 49152 to 65535 are known as dynamic or private ports.