Who does source address validation? (was Re: what's that smell?)
Florian Weimer
Weimer at CERT.Uni-Stuttgart.DE
Wed Oct 9 12:18:34 UTC 2002
Sean Donelan <sean at donelan.com> writes:
> Whether this is still true, the legend lives on. A 20% throughput hit
> won't be offset by a 12 to 18 percent bandwidth savings. Especially on
> heavily loaded circuits. Some network engineers are reluctant to do any
> type of packet filtering (uRPF or ACL based) because of the belief it will
> hurt performance (latency, throughput, etc).
Some network operators got burned by broken ACL implementations, too.
--
Florian Weimer Weimer at CERT.Uni-Stuttgart.DE
University of Stuttgart http://CERT.Uni-Stuttgart.DE/people/fw/
RUS-CERT fax +49-711-685-5898
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