Every day when I am online my McAfee firewall will warn me that there is a Port Scan Attack. The first few times this happened, my McAfee Visual Trace will crash when I clicked trace hacker.

Later, I managed to use the Visual Trace to trace the hacker. And my McAfee Visual Trace gives me the same results. That means I have been targeted by a hacker because the IP address is the same.

Registrant:
Name: Unknown
IP Address: 209.133.105.22
Location: Oakland (37.889N, 122.294W)
Network: Unknown

Registrant contact information is not available.

Network:

Abovenet Communications, Inc NETBLK-ABOVENET-3 (NET-209-133-0-0-1)
209.133.0.0 - 209.133.127.255
BAYCIS MFN-B698-209-133-105-0-24 (NET-209-133-105-0-1)
209.133.105.0 - 209.133.105.255

ARIN WHOIS database, last updated 2003-10-25 19:15
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Here is my questions:

1) What should I do with the information given above?
2) Every time I received this warning, I disconnect my internet connection. Is this the right thing to do?
3) What shall I do to stop this hacker?
4) Is there a program used by hacker out there that caused my McAfee Visual Trace to crash when I try to trace him/her/it?
5) How to know that I have not been hacked?
6) A scan test done at Sygate shows that some of my ports which were previously hidden are open.




Thanks for your help.