A question about Utorrent, CFP and port forwarding (curious - not help)

Greetings,

Back when I ran ver2.4 and Utorrent I would forward a single port and use that port exclusively - Utorrent only used the 1 port for everything and didn’t even try to use any others.

Why then, is it now necessary to create all of these accompanying rules for outgoing connections?
If I create a singular port rule for Utor I get a billion blocks logged.

Can someone explain why, with my one port forwarded Utorrent still calls out on all of these other ports, when it didn’t used to?

(for the record Ut works as good now as it did then…which is really good)

Thanks,
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