Ghost Port Scan is an advanced port scanner and a firewall rule disclosure tool. Uses IP & ARP spoofing, sniffing, stealth scanning to provide pen-testers and admins with software that allows them to test the settings of a remote host, even if it is firewalled.
You can download it from the following link: https://packetstormsecurity.com/files/download/25175/gps-0.6.0.tar.gz
Source: https://packetstormsecurity.com/files/25175/gps-0.6.0.tar.gz.html