Base Machine – Kali Linux
Target Computers - Linux or Windows Any
1. Start Kali Linux
2. Open Terminal
#sudo su -
Password: kali
#unicornscan [target_ip] -Iv
TCP open [ip] ttl 128
ttl 128 – Running Windows OS
Now for another machine = Linux
#unicornscan [target_ip] -Iv
ttl 64 ----- means that computer is running Linux OS
Note: If unicornscan command is not available, install unicornscan
First confirm by running
#apt list unicornscan
If not found then run
#apt install unicornscan