Hi,
I'm trying to open some ports on my Hamlet router/modem in order to get my P2P clients (bittorrent and DC) to work.

I'm in a small network, behind a SuSE Firewall and a Hamlet HDSL640 modem.

In my modem settings, in the NAT section I selected "dynamic NAPT" and in the Virtual Server section I opened the port 1163 (TCP and UDP) to be used with my Azureus client, and pointed it to my firewall machine's IP address.

Also I opened the same port on the SuSE Firewall. Then I connected to a website providing a port scanning service ( https://www.grc.com/x/portprobe=1163 ), but this port always looks closed.
I also have ports 20 and 21 open on my router and firewall, and they are shown as open by the same website.

If I try stopping the firewall it still reports port 1163 as closed. So it seems a router problem (??).

Is there any further configuration missing or something I'm doing wrong?

Thanks for your help,
Stefano

At the time did you have something running that accepts connections on port 1163?

nope - have also tried different ports.

A port will show as closed unless you have a daemon listening that accepts connections on that port. For instance, on this box nothing is listening on port 1163 so nmap shows the port is closed. If you want www.grc.com to see an open port, you'll need to have a daemon running on your box that accepts connections on port 1163 as well as a port forward to that box configured in your router.

# nmap localhost -p 1163

Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2005-09-27 07:10 BRT
Interesting ports on asus (127.0.0.1):
PORT STATE SERVICE
1163/tcp closed unknown

Nmap finished: 1 IP address (1 host up) scanned in 0.134 seconds

With azureus running and listening to port 1163:

And still get "closed" result from grc.com!

Does your ISP block bittorrent ports?

I think not - as I said, I tried with several ports and I didn't succeed to open ANY port except 20 and 21, which were opened by another person who first configured my firewall and FTP server.