I thought I would see how much protection each of my firewalls has been providing, so I ran GRC.com's Shields Up! Here's a brief summary of what I did. 1) I shut down ZoneAlarm on my computer(s). Ran the test and everything reported as STELTH, except port 21 as CLOSED. I disabled my UPnP setting for port 21 (via Windows xp) and retested - port 21 reported as STEALTH. 2) I disabled my WRT54G firewall (ZA already shut down). Couldn't even get to Shields Up! page - getting time out error. Enabled the firewall - no problem whatsoever. ~~~ My questions are as follows: A. Is the behaviour with my port 21 and UPnP normal? (UPnP is enabled in the router) B. Why was I getting time out error with Shields Up! when I disabled my WRT54G firewall? (no problem going to other sites) Thanks.