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Message from discussion PF inadequacy: queue download
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Steven Schneider  
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 More options Apr 30 2006, 10:54 am
Newsgroups: comp.unix.bsd.openbsd.misc
From: Steven Schneider <steven_schnei...@telus.net>
Date: Sun, 30 Apr 2006 00:54:48 GMT
Local: Sun, Apr 30 2006 10:54 am
Subject: Re: PF inadequacy: queue download
* kestas....@gmail.com <kestas....@gmail.com> [2006-04-29]:
>> I haven't heard of any firewall that successfully could.  If you're
>> being DDOSd, you're being DDOSd.  No firewall with any special set
>> of rules can improve your bandwidth in that case.  If the pipe is
>> filled, it's filled.
> Yes, if you're being DDoSed then incoming traffic shaping won't do
> anything, but if you're using TCP streams from cooperative hosts you
> can shape incoming traffic very effectively; you drop packets, sender
> realises packets are getting lost, sender slows down sending packets.
> It works when you use the hack of queueing on the internal interface
> when you're using NAT, it clearly works, so why can't you do it on a
> single interface?

Obviously, I misunderstood.  It's still true that the queuing
actually occurs on your side of the firewall, and that it has to be
on the outbound traffic.

Now I might still be wrong, but I think that you want to control
your machine's ack rate.  Have you looked at
http://www.benzedrine.cx/ackpri.html?  This guy has some ideas that
might be applicable to your situation.

You may also want to look at
http://www.bgnett.no/~peter/pf/en/long-firewall.html.

I've found both of these sites to be sources of useful PF info.  :-)

--
W. Steven Schneider  <steven_schnei...@telus.net>


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