[root@devbox ~]# nmap -P0 82.174.2.80

Starting nmap 3.70 ( http://www.insecure.org/nmap/ ) at 2008-04-07 10:37 CDT
Interesting ports on cust-80-2.dsl.versateladsl.be (82.174.2.80):
(The 1651 ports scanned but not shown below are in state: closed)
PORT     STATE    SERVICE
20/tcp   filtered ftp-data
21/tcp   filtered ftp
23/tcp   filtered telnet
80/tcp   filtered http
135/tcp  open     msrpc
139/tcp  open     netbios-ssn
443/tcp  filtered https
445/tcp  open     microsoft-ds
5900/tcp open     vnc