Re: [RPSEC] Re: draft-convery-bgpattack-00
Iljitsch van Beijnum <iljitsch@muada.com> Thu, 07 November 2002 14:04 UTC
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Date: Thu, 07 Nov 2002 15:03:16 +0100
From: Iljitsch van Beijnum <iljitsch@muada.com>
To: sandy@tislabs.com
cc: kent@bbn.com, rpsec@ietf.org
Subject: Re: [RPSEC] Re: draft-convery-bgpattack-00
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On Wed, 6 Nov 2002 sandy@tislabs.com wrote: > >I don't see what this has to do with having a neighbor identifier in the > >update message. Since the AS path is different here, this situation > >should be caught in the AS path validation phase. > It would not be caught in the AS path validation phase. N has a valid > signed path that ends in AS X, signed by AS X. (We're presuming the > don't-include-neighbor-id-in-signature approach.) AS N adds itself > to the path and signs that. All signatures check. Ah, I see now. I was under the impression including the destination AS was only relevant to the update message and not to the signing of the path. I see a few ways around this: - include all neighbors in one signature: more costly in terms of memory, less in processing - don't include the AS for peering neighbors but only transit neighbors in the signature. Then peers don't get to announce the route any further, which is good, mostly. Customers of the peer would have to accept the route without a signature, though. - make some kind of virtual AS group > >Also note that protecting against abuse by AS N (for instance, AS N > >claims to have the bast path to a destination that AS X really has the > >best path to) on the basis that AS N isn't a neighbor of AS X is too > >weak as it is not extremely unlikely ASes X and N peer. > "not extremely unlikely" == "likely"? Why? Because there is simply a lot of peering. The peering relationship is one where both parties benefit from not having to send traffic over more expensive link. It doesn't mean they trust each other. (If you _don't_ trust someone it may even be better to peer because then you know which stuff is theirs.) Iljitsch _______________________________________________ RPSEC mailing list RPSEC@ietf.org https://www1.ietf.org/mailman/listinfo/rpsec
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Joachim Jensen
- RE: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- [RPSEC] draft-convery-bgpattack-00 Sean Convery
- Re: [RPSEC] draft-convery-bgpattack-00 Damir Rajnovic
- [RPSEC] Re: draft-convery-bgpattack-00 David G. Boney
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] draft-convery-bgpattack-00 Christopher Lonvick
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Birger Toedtmann
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Randy Bush
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Michael Richardson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Birger Toedtmann
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- [RPSEC] prefix origin authentication (was Re: dra… Michael Richardson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Michael Richardson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Tony Tauber
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Danny McPherson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Michael Richardson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Sean Convery
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Sean Convery
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Larry J. Blunk
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Barry Raveendran Greene
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Michael Richardson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Michael Richardson
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Barry Raveendran Greene
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- RE: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Randy Bush
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Jeffrey Haas
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Charles Lynn
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Susan Hares
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- Re: [RPSEC] Re: draft-convery-bgpattack-00 sandy
- Aggregation in S-BGP was RE: [RPSEC] Re: draft-co… Charles Lynn
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Joel M. Halpern
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Randy Bush
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Iljitsch van Beijnum
- [RPSEC] Potential requirements Charles Lynn
- Re: [RPSEC] Potential requirements Iljitsch van Beijnum
- RE: [RPSEC] Re: draft-convery-bgpattack-00 Stephen Kent
- Re: [RPSEC] Potential requirements Tony Tauber
- Re: [RPSEC] Potential requirements Steve Suehring
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Sean Convery
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Sean Convery
- Re: [RPSEC] Re: draft-convery-bgpattack-00 Michael Richardson