The goal of this document is help new XP users survive long enough to do
their updates.
Many of them cant/wont put up acls/nat/firewalls ... but if they follow
the steps listed they have a better chance of
successfully downloading and updating their new machine then they will
have with OUT these steps.
It is not meant as a complete XP hardening document. There are lots of
documents that discuss in detail how to harden
windows (xp,nt,2k...).
If the person doesn't continue to do acls/nat/firewalls, they'll just get
infected after the next hole is discovered. And yes, there are plenty of
holes that a firewall/nat box won't fix. Still, better than the user only
doing Windows Update on the day of install and never having a firewall...