Awalnya tool ini hanya terdapat pada sistem operasi Linux, seiring berjalannya waktu kini tool ini juga tersedia untuk sistem operasi Windows.
Dengan nmap kita dapat mengetahui :
- host yang aktif pada suatu jaringan
- port yang terbuka
- sistem operasi yang digunakan
- dan banyak lagi
Penjelasan dari http://nmap.org/book/man.html#man-description
Nmap (“Network Mapper”) is an open source tool for network exploration and security auditing. It was designed to rapidly 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) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics.Install nmap di Ubuntu dapat dilakukan dengan 2 cara :
- Via terminal
Versi CLI : sudo apt-get install nmap
Versi GUI : sudo apt-get install zenmap
- Download nmap tar di http://nmap.org/download.html. Cara install :
bzip2 -cd nmap-6.25.tar.bz2 | tar xvf - cd nmap-6.25 ./configure make su root make install
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