How to use NMAP tool ?

NMAP stands for Network MAPper.
It helps us,

• to find the active IP addresses in a Network
• Ports opened in a System
• Operating System / Kernel Version of a remote System
• NIC  - Network Interface Card Hardware Name etc. and many more

Whatever I have listed above were already used by me.

* To find the active IP addresses in a Network / NIC  - Network Interface Card Hardware Name


nmap Range
nmap 192.168.61.1-255

 * Ports opened in a System

nmap IPAddress
nmap 192.168.61.1

*Operating System / Kernel Version of a remote System

nmap -O IPAddress
nmap -O 192.168.61.1

NMAP is available for Windows and Linux

How to Install nmap inWindows ?

Download the nmap package from the following link.
http://nmap.org/dist/nmap-5.21-win32.zip
After extracting the contents of the zip file,
we will be having a  list files,

We need to install the "winpcap-nmap-4.11.exe" executable file .
Once this file is installed,you can directly used the nmap tool.

How to Install nmap in Linux ?
If you are using BOSS Linux / Ubuntu
you have 2 options.
1. Install from the Source
2. Install from the Binary.

 Install from the Binary :

apt-get install nmap


More on Nmap is available here,

http://searchenterpriselinux.techtarget.com/tip/Using-nmap-for-Linux-administration-and-security