SMURF amplifier block list
Forrest W. Christian
forrestc at iMach.com
Mon Apr 13 01:11:14 UTC 1998
I just came to realize that there is one big problem with using BGP to
blackhole these SMURF-amplifier sites.
Put really simply, if you create a BGP blackhole all you do is prevent
your packets from getting to their network - not the converse.
While being listed on a blackhole list which affects connectivity might be
enough to encourage people to set no ip directed-broadcast or equivalent
on appropriate interfaces, I'd rather see a real filter set which I can
drop the packets at my internet-facing edges. How to update the filter
set dynamically is another issue that I'd like to hear about.
Am I thinking correctly here or am I missing some convoluted BGP
configuration?
- Forrest W. Christian (forrestc at imach.com)
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