Re: pf and bittorrent

Dave <dmehler26@xxxxxxxxxx> wrote:

Thanks for your reply. I'd prefer to use the standard ports, so as to
assure maximum compatibility.

I think it needs pointing out that BitTorrent isn't tied to any
particular port numbers. Port 6881 and subsequent ones is just the
default setting where the Mainline client listens for incoming
connections.

(Note that there are trackers that explicitly refuse clients that
use the default port numbers, because these can be a target for
filtering/traffic shaping by ISPs, so "to assure maximum compatibility"
you actually want to use a different range.)

There are three subcommunications to consider:
(1) The local client connects to the remote tracker. The port number
is specified in the tracker URL in the torrent file.
(2) The local client connects to a remote client. The connection will
be from an ephemeral port to whatever port the remote client has
specified via the tracker.
(3) A remote client connects to the local client. The connection
will be from some random port to whatever port the local client
has specified via the tracker.

--
Christian "naddy" Weisgerber naddy@xxxxxxxxxxxx
.

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