Comment by onionisafruit

I don’t remember the details, but based on my skill level I know it wasn’t anything novel. At the time I was learning my first programming language, Perl. IIRC I had a Perl daemon running on my computer that accepted an http request, did a reverse dns on the origin and sent the hostname in a net send message. Some of my coworkers used Sun workstations. I could get notifications from them but obviously couldn’t send them a net send message in response.