I need to do some testing with our VPN, and so to do it I need to be
outside the firewall. Obviously doing that has quite a few risks. If I
take an XP SP3 machine that is fully patched (all Windows updates
installed) and also running Symantec Endpoint Protection with all default
settings enabled, is this machine quasi ok to stick out on the Internet?

"Those of you who think you know everything are annoying to those of us who do."