Nmap, short for Network Mapper, is a free and open source tool used forvulnerability checking, port scanning and, of course, network mapping. Despite being created back in 1997, Nmap remains the ...

The Nmap Project just released the Holiday Edition of its open source cross-platform security scanner and network mapper, with several important improvements and bug fixes. New features in Nmap 7. ...

Many tools can accomplish this, but any network admin with an interest in security should get to know Nmap intimately. Nmap first appeared on the scene 14 years ago as a simple network scanner.