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Date: Mon, 19 Oct 2009 16:00:56 -0500
From: Matthew Walker <drinking.coffee@gmail.com>
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Subject: Re: IPFW closing range of ports
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You could starve it by using a pipe, allocate 16 kbit/sec. Then 
technically you aren't blocking it.

ipfw add 1000 pipe 10 tcp  from any to any 14500-65535 out
ipfw pipe 10 config bw 16k queue 100 mask dst-ip 0xff000000

Otherwise, you can block the ports:
ipfw add 1000 deny tcp from any to any 14500-65535 out

Depends on how much of a BOFH mood your are in that day.

-- Matthew

PeterJJ wrote:
> I'm new to this, so go easy please.
>
> I have put in place a very basic ipfw ruleset in my place of employment.
> To this i have been asked to block out all peer to peer sharing to ports in
> the range of 14500-65000.
>
>