LOL DUDE straight from the horses mouth...

KFSensor is a Windows based honeypot Intrusion Detection System (IDS).
It acts as a honeypot to attract and detect hackers and worms by simulating vulnerable system services and trojans.
By acting as a decoy server it can divert attacks from critical systems and provide a higher level of information than can be achieved by using firewalls and NIDS alone.


No firewall is going to prevent conversations YOU INITIATE. You are broadcasting to the INTERNET "HEY EVERYONE LOOK AT ME". Your firewall knows this and will let anyone look.