shaman@shaman007:~$ nmap localhost Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2006-02-13 23:41 MSK Interesting ports on localhost.localdomain (127.0.0.1): (The 1657 ports scanned but not shown below are in state: closed) PORT STATE SERVICE 25/tcp open smtp 110/tcp open pop3 631/tcp open ipp 3128/tcp open squid-http 32770/tcp open sometimes-rpc3 32771/tcp open sometimes-rpc5 Nmap finished: 1 IP address (1 host up) scanned in 0.138 seconds shaman@shaman007:~$ sudo nmap localhost Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2006-02-13 23:41 MSK Failed to determine the netmask of ! : No such device shaman@shaman007:~$