I'm stuck on this too. But in my case, my old palm TX
does a network hotsync to my computer without any
problem so there cannot be a firewall problem.

pilot-xfer -p net:any -l

works perfectly.

But the nokia network hotsync times out and fails

Edit: there is ZERO output from the tcpdump command when I
try to use the nokia; all sorts of good output with the TX.