Internet Related:

Finding an Internet Service Provider
Future Publishing Company:
Internet Society:
InterNIC Registratrion Services:
Internet World Magazine:
NETcraft WWW Server Survey:
RIPE: Réseaux IP Européens

Operating Systems:

linux.org:
Linux Documentation Project:
FreeBSD:
BSDI:
Microsoft:
Novell:
SunSoft/Java:

Communications Equipment Vendors:

Ascend Communications:
Bay Networks:
Cisco Systems:
Nortel:

Computing/Networking Security Technologies:

CERT Website @ Carnegie Mellon University:
Coast Archive at Purdue University:
Linux Security Site at Temple University
PGP Encryption Software:
My PGP Public Key:
Yahoo Security & Encryption Archive