DDOS, IDS, RTBH, and Rate limiting
Roland Dobbins
rdobbins at arbor.net
Sun Nov 9 03:27:27 UTC 2014
On 9 Nov 2014, at 10:12, Jon Lewis wrote:
> The tricky part is when to remove the route...since you can't tell if
> the attack has ended while the target is black holed by your
> upstreams.
You can with NetFlow, if you've D/RTBHed the IP in question on your own
infrastructure. NetFlow reports statistics on dropped traffic (except
on a few platforms with implementation deficiencies).
But this kind of thing punishes the victim. It's far better to do
everything possible to *protect* the target(s) of an attack, and only
use D/RTBH as a last resort.
-----------------------------------
Roland Dobbins <rdobbins at arbor.net>
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