Network News Transport Protocol (NNTP)
The Network News Transfer Protocol (NNTP) is a protocol associated with posting and retrieving messages from newsgroups. A newsgroup is the name given to a discussion forum that is hosted on a remote system. By using NNTP client software, similar to that included with many common email clients, users can post, reply, and retrieve messages.
NNTP is an application layer protocol that uses TCP as its transport mechanism.