I'm considering a file distribution between branch offices that uses Bittorrent. I understand that a Bittorrent client needs ports in the range of 6881-6999 to be forwarded to the internet to make the transfer faster.
What I don't understand is: how does this make things faster? I could understand if failing to provide proper means of communication between clients would prevent them from speaking to each other. But everywhere I look I just see the advice "Just forward the ports and the transfer will speed up".
Sorry if this seems off topic, but it strikes me as network related.