If we really try to find out what we have connected, we may believe that only the most basic devices we are most familiar with are the ones that are connected, like cell phones or laptops. But this is a mistake, because sometimes we forget to include other devices such as Smart TVs, which connect via Wirelessor all devices controlled using this technology, that is, everything included in the so-called IoT.
How to see how many devices are connected
There are several ways to do this, but to save you time we are going to show you the simplest one that you can use both on Windows and Linux devices, thanks to an application that allows us to know all the information about everything that is happening. connected to our network.
See what’s connected
For this we will use the application EtterCap, which is actually designed to carry out Man in the Middle attacks, but thanks to its simplicity and the functions it includes, it turns out to be one of the best to check out on our network. In this case we are going to show you how to do it from a Linux device since this way we can monitor our network from a very simple device, such as a Raspberry Pi.
The first thing to do is download the program, to do this simply enter the following command:
- sudo apt install ettercap-common
Once this is done, we run the program and we will no longer have to use the terminal for anything else, since it has a graphical interface that allows us to do everything we need. Just select the interface that is connected to our network. To see under Linux what interfaces we have, simply write the following:
Now we can see the interfaces we have active, just look for the main one, as this is usually the one we have connected to the network. Once this is done, just select it in the program and we will have completed the previous steps. Then we just have to start the program by clicking on the symbol seen, then select the icons that appear like a magnifying glass and a connection cable, after that it will show us all the connected devices, with their MAC
Identify what each is
If we have the problem that there is an additional device, that’s when we need to know how to identify if that device is ours or not. We can do it in a very simple way thanks to the MAC that it offers us, but don’t worry, it’s easier than you think.
- On Windows devices, just open the CMD and write ipconfig / allthis way we will see the MAC of our network card
- For mobile devices, we will need to access our device’s default settings app and then navigate to “Device Information”. Once here we can check the information about our address, both IP and MAC, in “Status”.
- On Linux, just run the command IP adder show and find the parameter link/ether.
