I'm new here and I'm trying to complete the steps as in the starting point tutorial. Unfortunately, even if connected to the VPN, I'm not able to reach that machine (10.10.10.27) also I'm getting the followinig error when I try to run the suggested nmap command as in the tutorial:
Error #487: Your port specifications are illegal. Example of proper form: "-100,200-1024,T:3000-4000,U:60000-"
Please, can someone help me?