Nmap scan is not showing all devices in my network

Question

I have an Android device that runs Android9 and also another Android device that runs Android6 on it. I shared Android9's internet to Android6 through a wifi connection. Then I shared the Android6's internet to my computer (runs linux) through USB Tethering option. Then on my computer, I run the command sudo nmap -sn <my_network_address>

It only showed my Android6's ip address and my computer's ip address. It does not show my Android9 on that list.

I want to know why do this happen.

Thanks in advance.

Solution

The connection sharing is likely made on android with NAT.

So the devices are on different networks, and are not seen by the nmap scan.

For example:

• the computer is using 192.168.43.0/24
• android6 is using 192.168.1.0/24
• android9 isusing 10.1.2.0/32

Comments

[Marcus Müller]

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