Firewalled/NATted with BitTorrent GUI 4.2.0

[D. D. Brierton]

On FC4 I have, installed from Extras,

bittorrent-4.2.0-1.fc4
bittorrent-gui-4.2.0-1.fc4

The new GUI has a small icon in the top-right below the menu which gives
the visual impression of no-access (something like a road-block sign),
and its tooltip says "Firewalled/NATted". Now I think I understand what
this means, but don't understand how it can be true in my case. My
firewall has ports 6881-6889 open, and those ports are forwarded from my
NAT router to the IP address of my machine. However, torrent downloads
are *very* slow (5 or 6KB/s on a 2Gb/s DSL line).

Port 6881-6889 are set to be open in system-config-securitylevel, as
this indicates:

$ cat /etc/sysconfig/system-config-securitylevel
# Configuration file for system-config-securitylevel

--enabled
--port=6881:tcp
--port=6882:tcp
--port=6883:tcp
--port=6884:tcp
--port=6885:tcp
--port=6886:tcp
--port=6887:tcp
--port=6888:tcp
--port=6889:tcp

My broadband router is set to forward ports 6881-6889 to 192.168.0.2,
which is my IP address:

# ifconfig eth1
eth1      Link encap:Ethernet  HWaddr 00:02:2D:50:FC:59
          inet addr:192.168.0.2  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:302422 errors:0 dropped:0 overruns:0 frame:0
          TX packets:350456 errors:19 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:197007656 (187.8 MiB)  TX bytes:230387996 (219.7 MiB)
          Interrupt:3 Base address:0xe000

Does anyone know how I go about confirming whether ports 6881-6889
really are open, and whether the router really is forwarding those
ports?

TIA.

Best, Darren

-- 
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D. D. Brierton            darren at dzr-web.com          www.dzr-web.com
       Trying is the first step towards failure (Homer Simpson)
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