My firewall keeps alerting me that the same IP address is trying to connect to my computer on a variety of different port numbers. I renewed my dynamic IP address several times and the person keeps finding me. What should I do? Somebody please help.

Several times a minute I get these messages.

"ZoneAlarm blocked traffic to port 3675 on your machine from port 61873 on a remote computer whose IP address is 80.138.209.79."