Is it time to abandon bogon prefix filters?
justin at justinshore.com
Wed Aug 6 10:52:36 CDT 2008
Randy Bush wrote:
> serious curiosity:
> what is the proportion of bad stuff coming from unallocated space vs
> allocated space? real measurements, please. and are there longitudinal
> data on this?
> are the uw folk, gatech, vern, ... measuring?
I still have 2 of my borders using an inbound ACL to filter BOGONs vs
null routes. For the ACLs I've broken down the BOGONs to nothing larger
than a /8. I see a number of hits on those entries, especially on 94/8.
and 0/8. While some of the other hits are accidental I'm sure, I
would seriously doubt if those 2 /8s are.
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