Note: You are currently viewing documentation for Moodle 3.3. Up-to-date documentation for the latest stable version of Moodle is probably available here: NNTP authentication.
Location: Settings link in Administration > Site administration > Plugins > Authentication > Manage authentication
NNTP authentication uses the Usenet NNTP protocol to check for users accounts. This allows direct integration with technologies such as Microsoft Exchange, INN, DNews, Diablo, etc.