If you want to learn about the most common ones, check out the following list: Port numberĭynamic Host Configuration Protocol – DHCP Different ports are used for different protocols. And public ports are ports from 49152-65535, they can be used by any service. Then, from 1024 to 49151 are registered ports – they are assigned by ICANN to a specific service.
They can be divided into three different categories: ports from 0 – 1023 are well-known ports, and they are assigned to common services and protocols.