Hey Frank, you responded to my question along these lines a couple of
weeks ago, small world :-)

We're actually both right, because my original answer was incomplete:

You _can_ have a rule per /15, and connection limit each rule.
Currently you only have 1000 queues however :-(

You're right because his real requirement (and mine!) would be solved
much better if resource allocation (connection & bandwidth) could be
defined with DDoS in mind. e.g.:
"If the state table has >100 connections from anyhost/24:any to
mysrv/32:80 do not allow any more that match this criteria."

I guess this could be done by having a (smarter) userland configurable
state management engine - performance impact of such resource protection
I'd guess would be harsh, compared to normal lightning packet throughput,
but I for one am convinced such protection is worth the higher memory/CPU
drain.  I think I'll start some kernel hacking when I'm done re-engineering
devitto.com mail.

PS. I don't believe that anything else can do this kind of thing
either (maybe packeteer?) - in particular being able to cut the whole
internet into class-Cs and fairly share the connections/bandwidth available.

Dom
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Dom De Vitto                                       Tel. 07855 805 271
http://www.devitto.com                         mailto:[EMAIL PROTECTED]
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