Discovering live servers over the network
In this recipe, we learn how to perform the of live network devices/machines over the network, using two methods: Passive information gathering and active information gathering.
We will examine the network traffic of our as a part of our passive information gathering, followed by information gathering, in which we will send packets over the network to detect active machines and services running on them.
Getting ready
In order to begin with this recipe, will be using a simple ARP sniffing/scanning tool called netdiscover. It is a net-discovery tool which can be used for active/passive ARP reconnaissance.
How to do it...
Let's start with passive reconnaissance:
- To start netdiscover, ensure that you are connected via Wi-Fi with a valid IP address. Open the terminal and enter the following command for passive reconnaissance:
netdiscover - p
The output will be as shown in the following screenshot:
- To perform an active scan over the network to discover...