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From: Marcos Bedinelli <bedinelli@madhaus.cns.utoronto.ca>
Date: Fri, 10 Feb 2006 15:22:41 -0500
To: Julian Elischer <julian@elischer.org>
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Cc: freebsd-net@freebsd.org
Subject: Re: Network performance in a dual CPU system
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Hi Julian,


On 10-Feb-06, at 14:54, Julian Elischer wrote:

> I have found that most people can optimise there ipfw rulests 
> considerably.
>
> for example: a first rule of:
> 1 allow ip from any to any in recv {inside interfacfe}
> 2 allow ip from any to any out xmit {inside interface}
> will cut your ipfw load by 50% immediatly.
> (you should only be filterring on one interface usually)
>
> use 'skipto' rules to immediatly send incoming and outgoing data to 
> different rules sets.
>
> etc.
> (I you want to privatly send me your ruleset I can probably help you 
> do this)
>
> julian


Thank you very much for your input and kind offer.

Not long ago I removed the entire ruleset on that machine and the 
impact was minimal (i.e., CPU utilization was still above 98%).

Nevertheless, I am sure my ruleset can benefit from some polishing. I 
would like to take the liberty of writing to you in the future to 
exchange some ideas, provided you have no objections.

Thanks!

--
Marcos