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Find which devices are connected to our network

Sometimes, we want to know how many devices are connected to our network. With any Unix OS you get easily know this. For this small tutorial we´re going to use Lubuntu 16.04.

We will use nmap. Nmap (Network Mapper) is a security scanner. It is used to discover hosts and services on a computer network.

For installing it, we first do

sudo apt-get install nmap
If we just need to identify the host names

 sudo nmap -sL 192.168.0.1/24  The result of this command will be

Starting Nmap 7.01 ( https://nmap.org ) at 2016-10-02 12:39 CST
Nmap scan report for 192.168.0.0
Nmap scan report for 192.168.0.1
Nmap scan report for 192.168.0.2
Nmap scan report for 192.168.0.3
Nmap scan report for 192.168.0.4
Nmap scan report for 192.168.0.5


If we need to know the OS of the devices we have connected we do a:

sudo nmap -O 192.168.0.1/24
The address 192.188.0.1 depends of your network, you should do a ifconfig for knowing yours.
The result of this command will be something like this:

Nmap scan report for 192.168…