Re: [sipcore] Yet more comments on rfc4244bis-02
Shida Schubert <shida@ntt-at.com> Mon, 08 November 2010 08:32 UTC
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From: Shida Schubert <shida@ntt-at.com>
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Cc: sipcore@ietf.org, Mary.Barnes@polycom.com
Subject: Re: [sipcore] Yet more comments on rfc4244bis-02
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Hi Roland; I meant to say, mandate the use of domain name "anonymous.invalid" as it is mandated in RFC3323 and used as a means to distinguish anonymized URI in RFC5079. This would help privacy service to see if other privacy service has already obfuscated the URI in H-I. Regards Shida On Nov 8, 2010, at 4:55 PM, <R.Jesske@telekom.de> <R.Jesske@telekom.de> wrote: > Shida, > Do I understand you correct that you woulf like to mandate the uri format e.g. anonymus@anonymus,invalid? > Why you would like it to be stronger than in RFC3323 mandated? > > Best Regards > > Roland > > > > > -----Ursprüngliche Nachricht----- > Von: sipcore-bounces@ietf.org [mailto:sipcore-bounces@ietf.org] Im Auftrag von Shida Schubert > Gesendet: Montag, 8. November 2010 07:50 > An: Elwell, John > Cc: Barnes, Mary; sipcore@ietf.org > Betreff: Re: [sipcore] Yet more comments on rfc4244bis-02 > > > Hi John; > > My comments inline. > > On Nov 8, 2010, at 3:31 PM, Elwell, John wrote: > >> Replying to both Shida and Mary: >> >>> -----Original Message----- >>> From: Mary Barnes [mailto:mary.ietf.barnes@gmail.com] >>> Sent: 08 November 2010 05:19 >>> To: Shida Schubert >>> Cc: Elwell, John; Barnes, Mary; sipcore@ietf.org >>> Subject: Re: [sipcore] Yet more comments on rfc4244bis-02 >>> >>> A few additional comments inline below [MB]. >>> >>> Mary. >>> >>> On Sun, Nov 7, 2010 at 12:28 AM, Shida Schubert >>> <shida@ntt-at.com> wrote: >>>> >>>> Hi John; >>>> >>>> My responses on some of the comments, I think >>>> Mary may be responding on the same issues but here are mine. >>>> >>>> On Nov 4, 2010, at 12:29 AM, Elwell, John wrote: >>>> >>>>> 1. Section 7.3.1. >>>>> "If there is a Privacy header in the request with a priv- >>>>> value of "header" or "history", then the initial hi-entry MUST be >>>>> anonymized and the header removed when the request >>> leaves a domain >>>>> for which the SIP entity is responsible." >>>>> I think it should say "...and the Privacy header removed" >>> - there is no point in removing the H-I header field if we >>> have anonymized it. >>>> >>>> You are right. The intention was to say "remove the >>> priv-value and remove the privacy >>>> header itself if there are no other priv-value left (id may >>> exists which needs >>>> to remain in the request until it reaches the egress point)". >>>> >>>>> >>>>> 2. What is meant by anonymizing a hi-entry (in this >>> paragraph and elsewhere)? Is it only the hi-targeted-to-uri >>> that needs to be anonymized, or also its parameters? The >>> examples in annex B show just the URI anonymized and with the >>> value anonymous@anonymous.invalid. Is this how it MUST be done? >>> >>> [MB] It is only the hi-targeted-to-uri that needs to be anonymized - >>> it is a MUST. The other parameters MUST not be changed. [/MB] >> [JRE] You didn't express any opinion whether we should mandate the way in which hi-targeted-uri is to be anonymized. > > To avoid redundant anonymization in case there are numerous > proxy acting as a privacy services, it would be good to mandate > how hi-targeted-uri is anonymized, so I am happy to say MUST > here. > >> >> <snip/> >> >>>>> 8. "MUST be calculated by incrementing the last/lowest digit >>>>> at the current level" >>>>> and >>>>> "That is, the lowest/last digit of the index MUST be >>>>> incremented " >>>>> What if an index is a double-digit integer? >>>> >>>> How about we remove the "lowest/last" and simply >>>> say incrementing the digit at the current level by 1 or >>>> something like that. >> [JRE] Why can't we specify the field as an integer, and then we can say we increment the integer? > > Sounds good to me. > >> >>>>> 9. Section 8: >>>>> "an >>>>> application might need to provide special handling in some cases >>>>> where there are gaps." >>>>> Should there be a note discussing the fact that some gaps >>> are not detectable, e.g., if I receive 1, 1.1 and 1.1.1, I >>> cannot detect if 1.2 or 1.1.2, say, is missing. >>>> >>>> This would happen, say for example if request was >>>> parallel forked, each branch would have the hi-entry >>>> that only the forked request traversed but missing >>>> the information of the other forks. I don't know if I would >>>> consider what you describe as a gap. You may be >>>> missing the other branches but you should be able to >>>> identify the gap in index for the branch that request >>>> traversed. (You may be missing the actual hop in the >>>> logical tree of History-Info that does not support >>>> 4244/4244bis but as they won't add the hi-entry >>>> there won't be a gap in index itself). >> [JRE] Yes, I understand that, and that is why I just asked the question - I don't have a strong opinion as to whether this is good enough or not. > > I think we can definitely add a text saying the hi-entries > an entity receives may not represent the whole picture > of where request was sent (other branches etc.). > > Regards > Shida > >> >> <snip/> >> >> John > > _______________________________________________ > sipcore mailing list > sipcore@ietf.org > https://www.ietf.org/mailman/listinfo/sipcore
- [sipcore] Yet more comments on rfc4244bis-02 Elwell, John
- Re: [sipcore] Yet more comments on rfc4244bis-02 Shida Schubert
- Re: [sipcore] Yet more comments on rfc4244bis-02 Mary Barnes
- Re: [sipcore] Yet more comments on rfc4244bis-02 Elwell, John
- Re: [sipcore] Yet more comments on rfc4244bis-02 Shida Schubert
- Re: [sipcore] Yet more comments on rfc4244bis-02 Mary Barnes
- Re: [sipcore] Yet more comments on rfc4244bis-02 R.Jesske
- Re: [sipcore] Yet more comments on rfc4244bis-02 Shida Schubert
- Re: [sipcore] Yet more comments on rfc4244bis-02 Paul Kyzivat
- Re: [sipcore] Yet more comments on rfc4244bis-02 Shida Schubert
- Re: [sipcore] Yet more comments on rfc4244bis-02 Hadriel Kaplan
- Re: [sipcore] Yet more comments on rfc4244bis-02 R.Jesske
- Re: [sipcore] Yet more comments on rfc4244bis-02 Ian Elz
- Re: [sipcore] Yet more comments on rfc4244bis-02 Ian Elz
- Re: [sipcore] Yet more comments on rfc4244bis-02 Hadriel Kaplan
- Re: [sipcore] Yet more comments on rfc4244bis-02 Hadriel Kaplan
- Re: [sipcore] Yet more comments on rfc4244bis-02 Paul Kyzivat
- Re: [sipcore] Yet more comments on rfc4244bis-02 Paul Kyzivat
- Re: [sipcore] Yet more comments on rfc4244bis-02 R.Jesske
- Re: [sipcore] Yet more comments on rfc4244bis-02 Paul Kyzivat
- Re: [sipcore] Yet more comments on rfc4244bis-02 Hadriel Kaplan
- Re: [sipcore] Yet more comments on rfc4244bis-02 Ian Elz
- Re: [sipcore] Yet more comments on rfc4244bis-02 Ian Elz