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 From:  Mine GO BOOM <mgb at minegoboom dot com>
 To:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] bandwidth limiting
 Date:  Tue, 11 May 2004 14:38:22 -0400
If you set the TCP/IP's ACK packets into a high query (like 100), you 
won't notice the upstream effecting the downstream. Create a new rule, 
and set it so all outgoing TCP packets that have the ACK flag are in the 
highest query you have.

If your queries are set to the numbers 1 and 2 right now, setting the 
ACKs into a query of number 100 level is fine. ACKs are very small 
packets, and all they do is acknowledge whenever you receive a packet 
over a TCP/IP connection.

This method requires that you are tunneling this through a pipe that is 
smaller than your max upstream bandwidth. This is so your cable/DSL 
modem/etc doesn't query your packets.

-Murphy

Mitch (WebCob) wrote:
> Anyone ever seen a good example of asymetric shaping?
> 
> For example, using an ADSL line, Max upstream is only 640kb but download can
> be 2.5Mb or 4.0Mb...
> 
> A simple limiter based on download bandwidth can still allow saturation of
> upload bandwidth causing lost packets and other problems - right? It would
> seem that you'd want to limit both ways - wonder how to best limit them
> differently...