Re: [dnsext] does making names the same NEED protocol changes at all?
Phillip Hallam-Baker <hallam@gmail.com> Thu, 24 February 2011 17:16 UTC
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References: <20110216165921.GW96213@shinkuro.com> <3B90ED2E-980D-4B01-889F-447D66D0B58D@insensate.co.uk> <20110216174011.GZ96213@shinkuro.com> <20110218143653.GC84482@bikeshed.isc.org> <20110218151209.GF66684@shinkuro.com> <4D5EEE09.4080405@dougbarton.us> <20110218222950.GL74065@shinkuro.com> <4D5F270F.20401@abenaki.wabanaki.net> <199C7B2B4228461FB024E59A990DB46D@ics.forth.gr> <4D641DB6.4090705@necom830.hpcl.titech.ac.jp> <20110222205617.GS53815@shinkuro.com> <4D64489B.7020901@necom830.hpcl.titech.ac.jp> <713D992A-1DB9-4F72-9D18-8E923AD51D8D@icsi.berkeley.edu> <AANLkTikf2ixw7JkxQiRBobv-seYnaYS0E3G8TboosnA=@mail.gmail.com> <alpine.LSU.2.00.1102231029260.27602@hermes-1.csi.cam.ac.uk> <AANLkTin6-mXBeKC_TzgvWUaCyxKfeZxTK1BQvXtpwuCN@mail.gmail.com> <4CC95816-8225-4CAE-897F-3F13F965BCEE@ICSI.Berkeley.EDU> <alpine.LSU.2.00.1102240953550.5244@hermes-1.csi.cam.ac.uk> <AANLkTiniVDDZXFOV4WryNN=+hK29rBO8_HTAqw7bK=Nf@mail.gmail.com> <8657EF4A-A08D-46E5-8917-553AE377CAD8@ICSI.Berkeley.EDU> <AANLkTikHm62x=+xWpSRyERw2cB31yZZhVkTT-90dgFjk@mail.gmail.com> <39EBBA76-22F1-4935-9300-B0078B229793@ICSI.Berkeley.EDU> <5A100E65-FB09-4556-AA5A-BF9FE0468DDA@ICSI.Berkeley.EDU>
Date: Thu, 24 Feb 2011 12:17:10 -0500
Message-ID: <AANLkTikECGtJm5WyDnX=s8zTERu89qLbFDebf8R1y4Pa@mail.gmail.com>
From: Phillip Hallam-Baker <hallam@gmail.com>
To: Nicholas Weaver <nweaver@icsi.berkeley.edu>
Cc: dnsext@ietf.org
Subject: Re: [dnsext] does making names the same NEED protocol changes at all?
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The problem here comes in that the downstream server needs to be prepared to support the scheme. And there can be multiple levels of ambiguity so the cache requirement grows exponentially with each level. I am starting to get a really bad feeling about the resolve the same requirement. Is the objective here really to make things work better or did the authorities that raised this in ICANN have a rather different agenda? On Thu, Feb 24, 2011 at 12:00 PM, Nicholas Weaver <nweaver@icsi.berkeley.edu > wrote: > > On Feb 24, 2011, at 5:52 AM, Nicholas Weaver wrote: > > > > > On Feb 24, 2011, at 5:44 AM, Phillip Hallam-Baker wrote: > > > >> So you are saying that it is TOO LATE to make a change that would have > major impact on the practice of domain management? > > > > I'm stating that your "nobody validates DNSSEC" claim is demonstrably > false. > > More precisely, there is a large ISP, Comcast, where ALL users who've opted > out of NXDOMAIN wildcarding are behind DNSSEC validating resolvers. I would > call this a significant operational deployment of DNSSEC validation. > > > > However, back to the original topic: why does case insensitivity for > non-ASCII NEED protocol changes? Can't it be done with just authority > changes for only those authorities needing case insensitive non-ASCII names > (rather than a protocol change which needs universal changes to the > resolvers) > > > The authority has a standard mapping for case insensitivity in the language > in question. > > a: If its the terminal authority for a name, it just runs the mapping and > returns the value (if necessary, generating a DNSSEC signature on the fly if > its an uncached mapping). > > b: If the authority is not a terminal, and it knows that the authority > directly beneath it for a name support case insensitivity, it just runs the > mapping and returns the appropriate value (if necessary, generating a DNSSEC > signature on the fly if its an uncached mapping). > > c: If the authority is not a terminal, and it does NOT know that the > authority directly beneath it supports case insensitivity, it runs the > mapping to generate a canonicalized DNAME or CNAME (as appropriate) with > TTL=0 and, if necessary, generates the appropriate signature. > > > Cases A and B Just Work (tm). > > Case C will work as well because you don't have the CNAME + DNAME problem > because the TTL is 0. Case C may reduce caching and also increase latency, > but that is ONLY network load on the authority not computation load (because > the DNSSEC signature is cached), and creates an incentive for the authority > directly beneath to support case-insensitive names. > > > NO DNS protocol changes are required, everything is provisioning and > authority side changes. > > > By maintaining a cache of signed data, the reality is although it supports > effectively exponential case-recasing, the ones which are actually used get > in the cache. If the cache is well structured and sticky, a computational > DOS won't be able to evict valid entries (limiting its effect to only new > BizArrE caSeS of TyPogRaphy) > > -- Website: http://hallambaker.com/
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- Re: [dnsext] DNSEXT progress and possible meeting… Vaggelis Segredakis
- Re: [dnsext] DNSEXT progress and possible meeting… Suzanne Woolf
- [dnsext] DNSEXT progress and possible meeting at … Olafur Gudmundsson
- [dnsext] draft-yao-dnsext-identical-resolution-02… Vaggelis Segredakis
- Re: [dnsext] draft-yao-dnsext-identical-resolutio… Suzanne Woolf
- Re: [dnsext] draft-yao-dnsext-identical-resolutio… Vaggelis Segredakis
- Re: [dnsext] draft-yao-dnsext-identical-resolutio… Andrew Sullivan
- Re: [dnsext] draft-yao-dnsext-identical-resolutio… Suzanne Woolf
- Re: [dnsext] draft-yao-dnsext-identical-resolutio… Andrew Sullivan
- Re: [dnsext] draft-yao-dnsext-identical-resolutio… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… John Levine
- Re: [dnsext] we need help to make names the same,… Jay Ashworth
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… John Levine
- Re: [dnsext] we need help to make names the same,… Alex Bligh
- Re: [dnsext] we need help to make names the same,… John R. Levine
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Alex Bligh
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Lawrence Conroy
- Re: [dnsext] we need help to make names the same,… Alex Bligh
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… John R. Levine
- Re: [dnsext] we need help to make names the same,… John R. Levine
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Doug Barton
- Re: [dnsext] we need help to make names the same,… John Levine
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Niall O'Reilly
- Re: [dnsext] we need help to make names the same,… Danny Mayer
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Jay Ashworth
- Re: [dnsext] we need help to make names the same,… Jay Ashworth
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Danny Mayer
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Danny Mayer
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Brian Dickson
- [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Patrik Fältström
- Re: [dnsext] we need help to make names the same,… John R. Levine
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Patrik Fältström
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Danny Mayer
- Re: [dnsext] we need help to make names the same,… Suzanne Woolf
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Paul Vixie
- Re: [dnsext] we need help to make names the same,… Doug Barton
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Doug Barton
- Re: [dnsext] we need help to make names the same,… Mark Andrews
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Doug Barton
- Re: [dnsext] we need help to make names the same,… Eric Brunner-Williams
- Re: [dnsext] SRV and wildcard CNAME Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Jay Ashworth
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] SRV and wildcard CNAME Mark Andrews
- Re: [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] SRV and wildcard CNAME Mark Andrews
- Re: [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] SRV and wildcard CNAME Larry Brower
- Re: [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] SRV and wildcard CNAME Phillip Hallam-Baker
- Re: [dnsext] SRV and wildcard CNAME Mark Andrews
- Re: [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] SRV and wildcard CNAME Masataka Ohta
- Re: [dnsext] SRV and wildcard CNAME Phillip Hallam-Baker
- Re: [dnsext] slave signing, was does making names… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Vaggelis Segredakis
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Eric Brunner-Williams
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Andrew Sullivan
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- [dnsext] bi-directionality Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Eric Brunner-Williams
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Donald Eastlake
- Re: [dnsext] we need help to make names the same,… Masataka Ohta
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Tony Finch
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Phillip Hallam-Baker
- Re: [dnsext] we need help to make names the same,… Nicholas Weaver
- Re: [dnsext] we need help to make names the same,… Eric Brunner-Williams
- Re: [dnsext] we need help to make names the same,… Alex Nicoll
- Re: [dnsext] we need help to make names the same,… Tony Finch
- [dnsext] does making names the same NEED protocol… Nicholas Weaver
- Re: [dnsext] does making names the same NEED prot… Phillip Hallam-Baker
- Re: [dnsext] does making names the same NEED prot… Nicholas Weaver
- Re: [dnsext] does making names the same NEED prot… Alex Bligh
- Re: [dnsext] does making names the same NEED prot… Suzanne Woolf
- Re: [dnsext] does making names the same NEED prot… Andrew Sullivan
- Re: [dnsext] does making names the same NEED prot… Phillip Hallam-Baker
- Re: [dnsext] does making names the same NEED prot… Tony Finch
- Re: [dnsext] does making names the same NEED prot… Alex Bligh
- Re: [dnsext] slave signing, was does making names… John Levine
- Re: [dnsext] does making names the same NEED prot… Phillip Hallam-Baker
- Re: [dnsext] does making names the same NEED prot… Andrew Sullivan
- Re: [dnsext] does making names the same NEED prot… Phillip Hallam-Baker
- Re: [dnsext] does making names the same NEED prot… Tony Finch
- Re: [dnsext] does making names the same NEED prot… Michael Graff
- Re: [dnsext] does making names the same NEED prot… Nicholas Weaver
- Re: [dnsext] does making names the same NEED prot… Andrew Sullivan
- Re: [dnsext] does making names the same NEED prot… Nicholas Weaver
- Re: [dnsext] does making names the same NEED prot… Brian Dickson
- Re: [dnsext] does making names the same NEED prot… Andrew Sullivan
- Re: [dnsext] does making names the same NEED prot… Ted Hardie
- Re: [dnsext] slave signing, was does making names… John Levine
- Re: [dnsext] slave signing, was does making names… Phillip Hallam-Baker
- Re: [dnsext] the same in old days, was making nam… John Levine
- Re: [dnsext] slave signing, was does making names… John Levine
- Re: [dnsext] the same in old days, was making nam… Alex Bligh
- Re: [dnsext] the same in old days, was making nam… John R. Levine
- Re: [dnsext] the same in old days, was making nam… Alex Bligh
- Re: [dnsext] the same in old days, was making nam… John R. Levine
- Re: [dnsext] the same in old days, was making nam… Phillip Hallam-Baker
- Re: [dnsext] the same in old days, was making nam… Ted Hardie
- Re: [dnsext] the same in old days, was making nam… Eric Brunner-Williams
- Re: [dnsext] the same in old days, was making nam… Ted Hardie
- Re: [dnsext] the same in old days, was making nam… Eric Brunner-Williams
- [dnsext] Terminological precision (was: the same … Andrew Sullivan
- Re: [dnsext] the same in old days, was making nam… Ted Hardie
- Re: [dnsext] does making names the same NEED prot… Olafur Gudmundsson
- Re: [dnsext] the same in old days, was making nam… Doug Barton