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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: community real-time BGP hijack notification service
On 12/09/2008, at 10:42 PM, Gadi Evron wrote: Hi, WatchMy.Net is a new community service to alert you when your prefix Hi Gadi, I just had a quick play with this, as I've been considering hacking together something similar. It is trivially easy for an attacker to falsify the origin AS. If 'they' are not doing it already, then I'm quite surprised. This isn't really a good thing to alarm on, in my opinion. Or, maybe it is, but there should be big bold text explaining that it's not reliable as it's trivially easy to falsify. To be honest, I can't think of anything better, all the attributes you can monitor can easily be falsified. My best idea is looking at the AS_PATH for changes, and alerting whenever that happens. You'd obviously get a different path whenever there is churn in the network though. I'm sure there's a way to do this, and I suspect having BGP feeds from many many places is the most reliable way for it to happen, I just haven't figured out why yet. This seems like a service that Renesys etc. could/should (or maybe do?) offer, they seem well placed with all their BGP feeds.. -- Nathan Ward
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