Hello! I have just signed up and I am trying to hack into oopsie. I have openvpn set up and running. I can do ifconfig tun0 to verify that. When i type nmap -sV -A -oN oopsie.txt 10.10.10.28 it says "Note: Host seems down. If it is really up, but blocking our ping probes, try -Pn
Nmap done: 1 IP address (0 hosts up) scanned in 3.54 seconds"
I am not quite sure what this exactly means and what I am to do, to fix it.
Thanks for any help!