i was not able to telnet to my isp shell account so i decided to shutdown my ZA firewall; once onto the shell account i monitored my listening ports and my netstat -an showed foreign IP port 80 was 'ESTABLISHED'; do i need to be concerned about this port vulnerability???

(ps: when i went back into windows IE i re-opened the firewall ; after half an hour i was surprised to see another established IP connection port 80; so i am wondering why the firewall would not have caught this)