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SubjectRe: Stopping SYN floods.
Date
> solution to this (in theory).  Forgive my lack of proper terminology
> here, but couldn't the tcp/ip stack be written so that if its connection
> table for a particular port fills, the next incoming SYN packet immediatly
> causes the oldest connection that is waiting for an ACK from it's SYNACK
> to time out?

Thats basically what the filters do, only you don't time out the oldest
you pick one at random above a certain data rate. There are some subtleties
and nasty related attacks to deal with too, which at the moment most vendor
patches don't cover.

Alan


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