Powerful, flexible, free port scanner for analyzing network security or Internet exploration. Stealth SYN scan, Ping sweep, FTP bounce, UDP scan, TCP/IP fingerprinting remote OS identification
What is Nmap?
Nmap ("Network Mapper") is a free open source utility for network exploration or security auditing. It was designed torapidly scan large networks, although it works fine against single hosts. Nmap uses raw IP packets in novel ways to determine what hosts are available on the network, what services (application name and version) they are offering, what operating system (and OS version) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. Nmap runs on most types of computers and both console and graphical versions are available. Nmap is free software, available with full source code under the terms of the GNU GPL. For more information visit the official Nmap website at http://www.insecure.org.
Freeware front-end for Nmap
A freeware front-end for Nmap