nanog mailing list archives
Re: Dear RIPE: Please don't encourage phishing
From: Eric Brunner-Williams <brunner () nic-naa net>
Date: Wed, 15 Feb 2012 12:00:25 -0500
On 2/15/12 8:32 AM, Mark Andrews wrote:
... Before deciding to go the IDNA route, treating DNS labels as UTF-8 was discussed, evaluated and rejected.
well, sort of. we started with "idn" as a wg label. the smtp weenies opined that they'd never have a flag day and anything other than a boot encoding in LDH would harm LDH limited mailers, so ... the code point problem (or problems) was moved out of "infrastructure" and into "applications", so the work product was labeled "idna", which the successor wg had no alternative except to follow the "in a" set of dependencies and assumptions. as you observed, labels are length tagged binary blobs, and where the blobs consist of 7 bit ascii values in the 'a'-'z' range, case folding is performed in lookup. what happens outside of that range is a path not taken, though i tried in 2929 to leave that open for future work, the sentence which read "text labels can, in fact, include any octet value including zero octets but most current uses involve only [US-ASCII]." was, if memory serves, proposed by a co-author to have been more restrictive. i agree with the "rejected" statement, the "evaluated" and even the "discussed" overstate the room available after the smtp weenies weighed in on what was permissible in headers. -e
Current thread:
- Re: Dear RIPE: Please don't encourage phishing, (continued)
- Re: Dear RIPE: Please don't encourage phishing Jimmy Hess (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Randy Bush (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Jimmy Hess (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Randy Bush (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Mark Andrews (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Randy Bush (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Stephane Bortzmeyer (Feb 15)
- Re: Dear RIPE: Please don't encourage phishing Valdis . Kletnieks (Feb 15)
- Re: Dear RIPE: Please don't encourage phishing Robert E. Seastrom (Feb 15)
- Re: Dear RIPE: Please don't encourage phishing Mark Andrews (Feb 15)
- Re: Dear RIPE: Please don't encourage phishing Eric Brunner-Williams (Feb 15)
- Re: Dear RIPE: Please don't encourage phishing bmanning (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Masataka Ohta (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Steven Bellovin (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing John Levine (Feb 11)
- Re: Dear RIPE: Please don't encourage phishing Christian de Larrinaga (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing John R. Levine (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Jeff Kell (Feb 12)
- Re: Dear RIPE: Please don't encourage phishing Masataka Ohta (Feb 11)
- Re: Dear RIPE: Please don't encourage phishing Neil Harris (Feb 11)
- Re: Dear RIPE: Please don't encourage phishing Sven Olaf Kamphuis (Feb 11)