Blocking Unwanted Parasites with a HOSTS File
Sure, you could use an enterprise grade application layer inspection firewall like an ISA or TMG firewall, but if you just want to protect your computer, or a couple of computers, then check out the power of the HOSTS file and how it can protect you from nasty things out there on the Internet.
Thomas W Shinder, M.D., MCSE
Sr. Consultant / Technical Writer