Re: [Sidr] [OPSEC] pccw as17557 leak...

Sandra Murphy <sandy@sparta.com> Thu, 28 February 2008 18:18 UTC

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Date: Thu, 28 Feb 2008 13:13:27 -0500
From: Sandra Murphy <sandy@sparta.com>
To: Vishwas Manral <vishwas.ietf@gmail.com>
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Cc: Roland Dobbins <rdobbins@cisco.com>, opsec wg mailing list <opsec@ietf.org>, sidr@ietf.org
Subject: Re: [Sidr] [OPSEC] pccw as17557 leak...
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On Thu, 28 Feb 2008, Vishwas Manral wrote:

> Hi Sandra,
>
> After reading a bit through what Pekka/ Danny/ Joe Abely said away in
> which we could update the filters between peers automatically(only
> relating to routes originated by the peer), from the RIR, we may
> achieve the very same functionality.
>

Generating filters from IRR (not RIR, a point it took me a while to learn) 
data is indeed similar, with the following differences:

(a) Security (authenticity, integrity and authorization) of IRR data 
varies widely among IRR's.  And there are quite a few IRRs.

(b) Even those IRRs associated with RIRs can protect authn/int/authr of 
only that data that comes from their own members.

(c) RIPE uses the strongest security model among the many IRRs, but their 
system relies on protection of the communication with the user (and the 
protection varies from user to user) and the protection of communication 
to the person accessing the data.  The protection is not stored with the 
data, so the reader must rely on the IRR to get it right.  I don't think 
the reader can tell what protection was used to put the data in there, so 
there's no way for the reader to judge the assurance in the data.

(d) This is not a mechanism that could extent to protection of the other 
BGP features that you have mentioned.  So if/when we decide to work on 
those features, we'd have to start over with the system we are building 
now anyway.

--Sandy



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