You should really try nmap.
But check if you are behind a firewall.
For example, here are two different results for the same machine. The first test, I use my local IP adress while on the other one I use the IP provided by the ISP.
Hope this help,
Vincent
Starting nmap 3.30 (
http://www.insecure.org/nmap/ ) at 2004-02-12 12:59 UTC
Interesting ports on sun.xxx.be (192.168.1.100):
(The 1627 ports scanned but not shown below are in state: closed)
Port State Service
22/tcp open ssh
23/tcp open telnet
53/tcp open domain
80/tcp open http
111/tcp open sunrpc
139/tcp open netbios-ssn
443/tcp open https
631/tcp open ipp
665/tcp open unknown
668/tcp open unknown
683/tcp open unknown
694/tcp open unknown
787/tcp open unknown
2049/tcp open nfs
3306/tcp open mysql
6000/tcp open X11
10000/tcp open snet-sensor-mgmt
Nmap run completed -- 1 IP address (1 host up) scanned in 0.436 seconds
[vincent@sun vincent]$ nmap 80.201.XX.221
Starting nmap 3.30 (
http://www.insecure.org/nmap/ ) at 2004-02-12 13:01 UTC
Interesting ports on 221.XX-201-80.adsl.skynet.be (80.201.XX.221):
(The 1643 ports scanned but not shown below are in state: filtered)
Port State Service
80/tcp open http
Nmap run completed -- 1 IP address (1 host up) scanned in 71.450 seconds
[vincent@sun vincent]$
thanks for your question, btw: I did not know that port 80 was open on my computer.
Regards,
Vincent