Ed Bott’s Microsoft Challenge–4/20/2000

Many of you suggested that the most important part of configuring a firewall or proxy server is to block undesirable incoming and outgoing ports and allow the ones I need. OK, I’ll buy that. In my continuing quest to build a truly private VPN, I need to configure TCP and UDP ports. But I’m having trouble finding an authoritative source of information on port numbers and their purposes. Can you point me (and your fellow TechRepublic members) to the best source of information?