I am doing some more Google-ing and found the following:
Code:
debian:~# nmap -sV localhost
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2008-08-19 09:34 EDT
Note: Host seems down. If it is really up, but blocking our ping probes, try -P0
Nmap finished: 1 IP address (0 hosts up) scanned in 2.124 seconds
debian:~# nmap -sV localhost
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2008-08-19 09:34 EDT
Stats: 0:00:00 elapsed; 0 hosts completed (0 up), 0 undergoing Host Discovery
Note: Host seems down. If it is really up, but blocking our ping probes, try -P0
Nmap finished: 1 IP address (0 hosts up) scanned in 2.053 seconds
debian:~# nmap -sV debian.responsiveweb.com
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2008-08-19 09:35 EDT
Note: Host seems down. If it is really up, but blocking our ping probes, try -P0
Nmap finished: 1 IP address (0 hosts up) scanned in 0.245 seconds
debian:~# nmap -sV 216.128.68.247
Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2008-08-19 09:35 EDT
Note: Host seems down. If it is really up, but blocking our ping probes, try -P0
Nmap finished: 1 IP address (0 hosts up) scanned in 2.070 seconds