[anti-abuse-wg] anti-abuse-wg Digest, Vol 89, Issue 15 -- was about 2019-03
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Carlos Friaças
cfriacas at fccn.pt
Fri Apr 5 09:17:43 CEST 2019
Hi, On Thu, 4 Apr 2019, Nick Hilliard wrote: > People generally hijack prefixes in order to make money. If hijacked > prefixes are not generally visible in the internet, then the value of the > hijacking is a good deal lower because the reach is smaller. It depends on the purpose, and if visibility is a key issue or not. :-) > In order to stop something like hijacking from being a problem, you don't > need to make it impossible to perpetrate - you just need to reduce the value > to the point that it's not worth doing it. The problem of that approach is the diversity of goals... > What makes hijacking attractive is when transit service providers don't > filter ingress prefixes from their customers. The value of hijacking at an > IXP will be proportional to the size of the IXP and whether the IXP has > implemented filtering policies at their route servers. Direct peering > sessions are troublesome, as they generally don't implement prefix filtering. Yes. Trust is generally higher between peers/BGP speakers in a small environment, which might become a vulnerability... But the value depends on the purpose. If the value for the hijacker is in announcing a bogus route just to _one_ network, it's irrelevant if the IXP has 20 members or 200 members. > But transit providers are where the bulk of the problem lies, and where > efforts need to be concentrated in order to handle the issue. I'm not completely sure about that. > MANRS is one part of this effort. Let's hope MANRS can seriously take off in terms of adoption! Cheers, Carlos > Nick >
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