nanog mailing list archives

Re: Cheap LSN/CGN/NAT444 Solution


From: Simon Perreault <simon () per reau lt>
Date: Mon, 30 Jun 2014 08:42:15 -0400

Le 2014-06-30 06:12, Roland Dobbins a écrit :
what is needed however is session timeouts.
This can help, but it isn't a solution to the botted/abusive machine problem.  They'll just keep right on pumping out packets and 
establishing new sessions, 'crowding out' legitimate users and filling up the state-table, maxing the CPU.  Embryonic connection 
limits and all that stuff aren't enough, either.

Why? Cause that (per-subscriber limits on ports and memory) is exactly what we recommend in RFC 6888...

Simon


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