Shot in the dark -- could it have been TCP/IP Illustrated? That's a pretty well-known book from that era. I actually read it in 2014 to nail down the fundamenta

Shot in the dark -- could it have been TCP/IP Illustrated? That's a pretty well-known book from that era. I actually read it in 2014 to nail down the fundamentals of networking and it paid off handsomely (despite its age).