In trying to lock down ZoneAlarm Pro, I selected Internet Explorer 6 and only allowed the regular http ports. When I started IE it tried to connect with UDP port 1728, 1730 and 1735. I can't imagine why, they're not normally assigned, my McAfee AV is right up to date and Moosoft Trojan scanner didn't find anything. I recently innocently clicked on a link which took me to what turned out to be a hacker site, I immediately got a bunch of windows opening, which is normally done to hide an attack. I didn't get any alarms from AV or ZA. Any ideas?