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 …

Jul 12, 2025 · Common TCP/IP ports include Port 80 for browsing websites, Port 443 for secure website connections, Port 25 for sending emails, and Port 22 for secure remote access (like connecting to …

Oct 25, 2025 · Checking open ports can be done using built-in tools like Command Prompt or PowerShell, which list active ports and the associated process names or identifiers.

Dec 2, 2025 · 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.

May 31, 2024 · It's a pain trying to memorize port numbers and their corresponding service names and protocols. So, we created this concise cheat sheet of common network

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.

Apr 18, 2025 · Below is a list of commonly used well known port numbers and their protocols. Additionally, RFC reference will help to have more detail on the enlisted transport-layer port numbers –

Mar 31, 2025 · TCP is one of the two main ways to transmit data in a TCP/IP network. UDP, which is a best-effort connectionless protocol, is the other one. Devices use TCP ports to identify specific …

Jan 5, 2025 · TCP/IP and UDP ports are widely used in modern networking, forming the backbone of data transfer and application-level communication. In this article, we’ll break down the concept of …

Apr 26, 2025 · Each protocol uses specific port numbers to ensure data reaches the correct destination. This article explains common TCP/IP ports and protocols, describing their basic functions in simple …