Port

A numbered channel through which computers and servers exchange specific types of data, directing network traffic to the correct services.

A port is a numbered channel through which computers and servers exchange specific types of data. Each service uses a different port number, such as port 80 for web traffic or port 25 for email. Firewalls and routers use these numbers to direct information to the right destination and block unwanted traffic. Understanding ports helps troubleshoot connection problems and configure secure hosting environments. Even though they operate quietly in the background, ports are essential for making online communication work smoothly and safely.