How to setup a NNTP server for Usenet?

  • Install inn (apt-get install inn2)
  • Edit /etc/news/inn.conf

Since you said "internal", I assume you aren't looking for feeds or getting any feeds, so you don't need to configure incoming.conf, innfeed.conf, or newsfeeds.

  • Create any local newsgroups with ctlinnd newgroup my.groupname y ''

At that point, you should be good to go.