[Mldonkey-users] Blocking Ports

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Hi,

is it in mldonkey possibile to block certain ports in the client ?
Because my "university provider" blocks the ports 4661,4662. So my client 
looses very much time on trying to connect to clients and servers on these 
ports.
I think this would be a quite useful option so you even hide that you have 
edonkey running without chandging your Firewall configuration.

Thanks Choby