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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Revealed: The Internet's well known BGP behavior
On Thu, 28 Aug 2008 10:16:16 -0500 "Anton Kapela" <[email protected]> wrote: > I thought I'd toss in a few comments, considering it's my fault that > few people are understanding this thing yet. > > >> On Thu, Aug 28, 2008 at 2:28 PM, Gadi Evron <[email protected]> > >> wrote: > >>> > >>> People (especially spammers) have been hijacking networks for a > >>> while > > I'd like to 'clear the air' here. Clearly, I failed at Defcon, WIRED, > AFP, and Forbes. > > We all know sub-prefix hijacking is not news. What is news? Using > as-path loop detection to selectively blackhole the hijacked route - > which creates a transport path _back to_ the target. > > That's all it is, nothing more. All but the WIRED follow-up article > missed this point *completely.* They over-represented the 'hijacking' > aspects, while only making mention of the 'interception' potential. > > Lets end this thread with the point I had intended two weeks ago: > we've presented a method by which all the theory spewed by academics > can be actualized in a real network (the big-I internet) to effect > interception of data between (nearly) arbitrary endpoints from > (nearly) any edge or stub AS. That, I think, is interesting. > Indeed, and I thank you for it. As noted, I and others have been warning about the problem for a long time. You've shown that it isn't just an ivory tower exercise; maybe people will now get serious about deploying a solution. To quote Bruce Schneier quoting an NSA maxim, attacks only get better; they never get worse. We now have running code of one way to do this. I think most NANOG readers can see many more ways to do it. A real solution will take years to deploy, but it will never happen if we don't start. And we want to have the solution out there *before* we see serious attacks on BGP. Again, thank you -- it was really nice work. --Steve Bellovin, http://www.cs.columbia.edu/~smb
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