In this guide, you’ll learn more about ports. Since it’s the default, your browser will automatically add the port for you. For example, when you go to, you’re connecting to the server on port 443, which is the standard port for secure web traffic. In certain instances, the program you’re using will automatically choose a port for you. When you connect to a computer, you do so via an IP address and a port. Each of these services must listen to and interact on a particular port to communicate. Many services, such as a web server, an application server, and a file server, will operate on a single IP address. Ports are logical communication endpoints in TCP/IP and UDP networking. To grasp them, there are many layers, protocols, and interfaces to learn and numerous resources and utilities. For many aspiring system administrators, networking is a vast and intimidating topic.
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