Note that the IP protocol number is not the same as the port number (see TCP/IP port), which refers to a higher level, such as the application layer. Following are some of the common IP protocol ...

A number from 0 through 1023 used to identify a network service on a private IP network or the public Internet. Residing in a field in the TCP or UDP header, the port number directs packets to the ...

The US can stop internet service providers from telling users that the government asked them for “registration and session IP addresses with associated port numbers” via a grand jury subpoena, a ...