cannot access site with web browsers...

I'm getting an error that I've never encountered before... I'm trying to access the 3ware RAID controller web interface on a system that I administrate (on 192.168.203.250:1080 - a local net), but when I enter that address (click on the link), I get an error dialog which says: Access to the port number given has been disabled for security reasons. I get this dialog whether I use mozilla or galeon. I know it's not a server issue, because I jumped onto my mac and was able to hit the port just fine with both OmniWeb and I.E. Therefore, there must be a security switch somewhere that I need to flip. I turned off privoxy for galeon and /etc/sysconfig is told that I have no proxies, so I don't think that's it... Any pointers?