How to interpret ipfw log?

[Clement Twine]

[...]

>>> Apr 11 04:27:05 name kernel: ipfw: 2500 Deny TCP
>>> 192.168.0.200:64970 65.87.165.45:281 out via tx0 Apr 11
>>> 04:27:05 name kernel: ipfw: 2500 Deny TCP
>>> 192.168.0.200:64115 65.87.165.45:106 out via tx0 Apr 11
>>> 04:27:05 name kernel: ipfw: 2500 Deny TCP
>>> 192.168.0.200:62007 65.87.165.45:284 out via tx0
> 
>> looks like nmap ;)
> 
> I don't remember running nmap.  What are the chances that
> machine is compromised?

zero chances - your firewall denied the intruder anyway :-)

clem.