Re: Questions about draft-lear-iana-no-more-well-known-ports-00.txt
Joe Touch <touch@ISI.EDU> Tue, 06 June 2006 14:40 UTC
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Date: Tue, 06 Jun 2006 07:39:08 -0700
From: Joe Touch <touch@ISI.EDU>
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To: Eliot Lear <lear@cisco.com>
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Cc: John C Klensin <john-ietf@jck.com>, ietf@ietf.org
Subject: Re: Questions about draft-lear-iana-no-more-well-known-ports-00.txt
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Eliot Lear wrote: > Joe, >> SRV records are not equivalent to either assigned or mutually-negotiated >> ports; they would require extra messages, extra round-trip times, and/or >> extra services (DNS) beyond what is currently required. >> > Just to be clear, I am not suggesting that no assignments be done, but > that SRV records be used where appropriate. If setup time or circular > dependencies are a concern, SRV records may not be appropriate. Right - I agree that assignments should not differentiate between privilege. SRV records serve two purposes: to unload the fixed list from IANA (like moving hosts.txt to the DNS did) and to allow local control over the map between service name and port (which can allow more than 65,000 services total). The first use is fine, but overkill IMO for a list with 65,000 entries at most. The second is a problem, for reasons explained in my I-D, because it puts control over host service offerings in the hands of whomever controls its DNS (e.g., another thing for ISPs to claim makes you a commercial customer at commercial prices) and because it's inefficient. Joe
_______________________________________________ Ietf mailing list Ietf@ietf.org https://www1.ietf.org/mailman/listinfo/ietf
- Questions about draft-lear-iana-no-more-well-know… John C Klensin
- Re: Questions about draft-lear-iana-no-more-well-… Eliot Lear
- Re: Questions about draft-lear-iana-no-more-well-… Jeffrey Hutzelman
- Re: Questions about draft-lear-iana-no-more-well-… John C Klensin
- Re: Questions about draft-lear-iana-no-more-well-… David Conrad
- Re: Questions about draft-lear-iana-no-more-well-… David Conrad
- Re: Questions about draft-lear-iana-no-more-well-… Eliot Lear
- Re: Questions about draft-lear-iana-no-more-well-… Joe Touch
- Re: Questions about draft-lear-iana-no-more-well-… Eliot Lear
- RE: Questions about draft-lear-iana-no-more-well-… Hallam-Baker, Phillip
- Re: Questions about draft-lear-iana-no-more-well-… Joe Touch
- RE: Questions about draft-lear-iana-no-more-well-… Hallam-Baker, Phillip
- Re: Questions about draft-lear-iana-no-more-well-… Joe Touch
- RE: Questions about draft-lear-iana-no-more-well-… Hallam-Baker, Phillip
- Re: Questions about draft-lear-iana-no-more-well-… Joe Touch
- Re: Questions about draft-lear-iana-no-more-well-… Mark Andrews