Before the ubiquity of the Internet, before WiFi, even before Ethernet was affordable, there was the LocalTalk physical layer and cabling system and its companion suite of protocols called AppleTalk. A network ahead of its time in terms of plug-and-play, but not quite as fast as 10mbit/s Ethernet at 230.4 kbit/s.
This article goes into great detail about setting up an AppleTalk network today.
