There was a time when nobody was "NAT"ed and basically every workstation had an Internet Address. I would sit at my office at Olivetti Advanced Technlogy and be able to "finger" people's workstations at Sun, HP, and Adobe and see what they were up to.
In my undergrad years, if the campus police got a panicky parent call, they'd send an officer to the computer club to ask us to finger every host on the campus.
