The Internet protocol suite, commonly known as TCP/IP, is a framework for organizing the set of communication protocols used in the Internet and similar computer networks according to functional criteria.
The foundational protocols in the suite are the Transmission Control Protocol (TCP), the User Datagram Protocol (UDP), and the Internet Protocol (IP)
Port:
Unique on a computer
From 0 to 65535
From 0 to 1023 are well-known ports
1024-49151 are companies ports
49152-65535 are client-side port that is dynamic
end user computer assign to itself to establish connection