Being on NTL with a 512k connection 24 hour and going like the clappers most times, I really needed this info..
http://homepage.ntlworld.com/j.buch...mx/blocked.html
I tired out the suggested port changes and the test system seems to work Ok into my server, up & downloads Ok, also searches Ok with the rest of the network, so could be a winner in the "awkward" situations, but as was said, only if the primary nodes talk on those ports too...
Nice post Db ... Took me a long time to read it, which means it was usefull, and not skipped like so many other long posts..
(Snark's short span of attention!)
Snark..