Interesting issue I've encountered. I usually use a VPN for my pc. This particular instance turned it off and booted up FFXI at work on their public wifi. I get an error message when trying to log into POL (saying network connection issue, please try again). When I turn on my VPN, it boots right up.
Is there a port or something that my workplace has turned off that FFXI accesses? I just thought it was weird. Any ideas?