<p>If the port mapping is unsuccessful and you have a UPnP compatible router, make sure:
<ul>
<li>UPnP is enabled. Consult your router's documentation for instructions. If your router doesn't support UPnP, you will have to forward <ahref="pfrouter.html">manually</a>.</li>
<li>DMZ mode is disabled.</li>
<li>The port has not already been forwarded manually.
<p>If you are still having problems, open the Message Log (in the Window menu) and post the debug output on the <ahref="http://transmission.m0k.org/forum/viewforum.php?f=2">support forums</a>.