If you want Internet access in your MOO, it has to be enabled twice: first, whoever compiles the MOO code on your machine has to enable it, and second, you need to set $network.enabled to 1.
Internet: Mail
not written
Internet: Gopher
The current standard for gopher access in MOOs is the Generic Gopher Slate. The MOO code for it is available at the LambdaMOO ftp site, in /pub/MOO/contrib. Gopher is, of course, pretty much dead. Support for this may be disappearing from Valhalla.
World-Wide Web
not written
Usenet News
not written