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TICKET ARCHIVE -> Azureus, Port Mapping and NAT Problem

Andrew D - Mar 21, 2006 - 12:26 am

I am having a problem using Azureus with OS X 10.4.5 and an AirMac Extreme base station with latest firmware. The base station is connected to my cable modem.

The health in Azureus is an orange smiley and the status lights at the base of the main window tell me (orange light) that there appears to be a problem with the Distributed Database's UDP port mapping (NAT/firewall) and (red light) that there is a Firewall/NAT (TCP) reachability problem.

My OS X software firewall is turned off so I assume that the problem is with the built-in firewall in the AirPort Extreme base station or a NAT problem.

I have tried using port mapping in the Airport Admin Utility to map port 49152 (the port I have assigned to bittorrent rather than 6881) but this has not solved the problem. In the Port Mapping screen I am asked to enter the public port, private address 10.0.1.xxx and private port. I set both the public port and private port to 49152 and the private address to 10.0.1.2 (the IP address of my main computer). This seems to have increased the download speed but has not solved the other problems.

Does anyone know what else I can do to solve this issue?

Regards,
Andrew

macrjoh - Mar 21, 2006 - 7:26 pm

By following the instructions found here:

http://www.blueskyis.com/bittorrent/...forwarding.php

You should be good to go.

Also please note, I manually set my computer IP address to 10.0.1.201 in the Network System Preference - so that the port forwarding through the airport extreme works consistently.

Cheers,
Rob

Andrew D - Mar 22, 2006 - 10:27 am

Rob,

Thanks for your response. I followed the instructions at the blueskyis.com address you gave to set port mapping on the airport base station but this has not changed anything, unfortunately. Azureus still states that there is a firewall and/or a NAT problem.

After setting up the port mapping I checked port 49152 (as set in Azureus) using the test here: https://www.grc.com/x/portprobe=49152 but it returns a "stealth" result meaning that the port is still firewalled somehow. I have the software firewall turned off in System Preferences -> Sharing, and I have done the port mapping in the base station, so I don't know why there is still a firewall problem. Could there be a firewall also built into the cable modem provided by my ISP? This seems unlikely to me.

Regards,
Andrew

macrjoh - Mar 22, 2006 - 10:41 am

I am not an expert on this but I can tell you that using the range of ports 6881 through 6889 as per the instructions Azureus works perfectly with my airport extreme which then connect through a motorola surfboard cable modem.

Have you tried opening these specific ports, as per the webpage instruction.

If so, I will reopen the ticket and hopefully someone more technically proficient can help -

Cheers,
Rob

Andrew D - Mar 22, 2006 - 11:10 am

Rob,

Yes I just tried opening the specific ports mentioned (6881-9) but the result is exactly the same: a yellow smiley meaning that "the tracker is ok, you're connected to peers but you don't have any remote connection. You may have a NAT problem".

If you could reopen this ticket that would be appreciated.

Thanks,
Andrew

TechSupport - Mar 25, 2006 - 11:30 am

This ticket has been moved to the open forums for more exposure.

Please follow this link:

http://www.macosx.com/forums/showthread.php?t=270037