-- the starting point tutorial --
if you are receiving error messages such as
(nmap scan) host seems down try -Pn scan
or (nmap -Pn scan )all ports filtered. you are probably using the wrong vpn package!
download and run the starting-point-ovpn from starting-point tutorials page
then go to downloaded file dir and start vpn with
now run nmap scan as sudo
you should see open ports after a few seconds or so..
hope this helps.. it drove me crazy for a few days.