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) …

Jun 25, 2025 · Whether you’re configuring firewalls, troubleshooting connectivity issues, or securing your network, this common ports cheat sheet will serve as your quick reference guide.

2 days ago · Browse by category below to quickly identify all ports associated with web services, email, file transfer, and more. We hope that you found this cheat sheet useful. Familiarity with …

Jun 26, 2025 · As a component of the Transport Layer (Layer 4 in the OSI model), TCP and UDP ports are the virtual places where network connections begin and end. Port numbers allow …

Aug 13, 2025 · Learn about common ports in modern networks. Understanding these ports is essential for troubleshooting, security, and network optimization.

Jul 12, 2025 · A port is a number that specifies the host and the service to specifically identify a transaction over a network. Ports are important because they help organize the different types …

What is a port? A port is a virtual point where network connections start and end. Ports are software-based and managed by a computer's operating system. Each port is associated with …

Dec 4, 2025 · This guide will help break down what exactly network ports are, what port forwarding is and explain the most common port numbers and what they are typically used for.

This comprehensive guide explains everything about network ports - what they are, how they work, and why they matter for developers. Whether you're debugging "port already in use" …

May 31, 2024 · So, we created this concise cheat sheet of common network ports and their associated protocols and service names for you to use as a quick reference. Feel free to print …