My website is a reference and a tool for those who work with networks or want to understand them. Here you can find not only lists of ports and protocols, but also practical advice: how to diagnose problems, how to configure firewalls, how to avoid common mistakes.

The sections of the website are structured so that you can quickly find the information you need: by port number, by protocol, by usage scenario. There are also examples for various tasks: from a home network to server infrastructure.

https://tcp-udp-ports.com/