Re: [Dime] Eric Rescorla's No Objection on draft-ietf-dime-rfc4006bis-08: (with COMMENT)
Eric Rescorla <ekr@rtfm.com> Thu, 24 May 2018 13:58 UTC
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From: Eric Rescorla <ekr@rtfm.com>
Date: Thu, 24 May 2018 06:58:03 -0700
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To: Yuval Lifshitz <yuvalif@yahoo.com>
Cc: The IESG <iesg@ietf.org>, dime-chairs@ietf.org, dime@ietf.org, draft-ietf-dime-rfc4006bis@ietf.org
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Subject: Re: [Dime] Eric Rescorla's No Objection on draft-ietf-dime-rfc4006bis-08: (with COMMENT)
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On Thu, May 24, 2018 at 6:53 AM, Yuval Lifshitz <yuvalif@yahoo.com> wrote: > more inline > > On Thursday, May 24, 2018, 4:18:06 p.m. GMT+3, Eric Rescorla <ekr@rtfm.com> > wrote: > > > > > On Wed, May 23, 2018 at 11:33 PM, Yuval Lifshitz <yuvalif@yahoo.com> > wrote: > > *inline* > > On Thursday, May 24, 2018, 6:41:17 a.m. GMT+3, Eric Rescorla <ekr@rtfm.com> > wrote: > > > Eric Rescorla has entered the following ballot position for > draft-ietf-dime-rfc4006bis-08: No Objection > > When responding, please keep the subject line intact and reply to all > email addresses included in the To and CC lines. (Feel free to cut this > introductory paragraph, however.) > > > Please refer to https://www.ietf.org/iesg/ statement/discuss-criteria. > html <https://www.ietf.org/iesg/statement/discuss-criteria.html> > for more information about IESG DISCUSS and COMMENT positions. > > > The document, along with other ballot positions, can be found here: > https://datatracker.ietf.org/ doc/draft-ietf-dime- rfc4006bis/ > <https://datatracker.ietf.org/doc/draft-ietf-dime-rfc4006bis/> > > > > ------------------------------ ------------------------------ ---------- > COMMENT: > ------------------------------ ------------------------------ ---------- > > Rich version of this review at: > https://mozphab-ietf. devsvcdev.mozaws.net/D3353 > <https://mozphab-ietf.devsvcdev.mozaws.net/D3353> > > > I only gave this a light read. Some minor comments below. > > COMMENTS > S 1.2. > > deduction of credit from the end user account when service is > > completed and refunding of reserved credit that is not used. > > > > Diameter Credit-control Server A Diameter credit-control server > acts > > as a prepaid server, performing real-time rating and credit- > > control. It is located in the home domain and is accessed by > > a definition of "home domain" would be useful > > *[yuval] base spec define "home realm" we should probably change to that* > > S 2. > > credit-control application. > > > > When an end user requests services such as SIP or messaging, the > > request is typically forwarded to a service element (e.g., SIP > Proxy) > > in the user's home domain. In some cases it might be possible that > > the service element in the visited domain can offer services to the > > also define visited domain, or at least point to a reference. > > *[yuval] base spec defined "local realm" for that. will fix* > > S 3.1. > > [ CC-Correlation-Id ] > > [ User-Equipment-Info ] > > [ User-Equipment-Info-Extension ] > > *[ Proxy-Info ] > > *[ Route-Record ] > > *[ AVP ] > > Please expand AVP on first use. > > *[yuval] it is in the base spec* > > > I'm sure it is, but you should still expand it. > > [yuval] sure we can (it would be a bit awkward though, in the world of > "Diameter" it will be like explaining what TCP stands for...) > https://tools.ietf.org/rfcmarkup?doc=7322#section-3.6 S 4. > > control client requests credit authorization from the credit-control > > server prior to allowing any service to be delivered to the end > user. > > > > In the first model, the credit-control server rates the request, > > reserves a suitable amount of money from the user's account, and > > returns the corresponding amount of credit resources. Note that > > Sorry, reserves the balance or the amount reserved? > > *[yuval] not sure what is not clear?* > > > As I said above, do you return the balance or do you return the amount of > credit that has been reserved. > > [yuval] return the reserved amount > OK, the text should say it. -Ekr > > > > S 14. > > > > Even without any modification to the messages, an adversary can > > eavesdrop on transactions that contain privacy-sensitive information > > about the user. Also, by monitoring the credit-control messages one > > can collect information about the credit-control server's billing > > models and business relationships. > > I'm having trouble reading these two paragraphs. Are they about what > happens if TLS isn't used? > > *[yuval] will clarify. see here: *https://github.com/ > lbertz02/rfc4006bis/issues/51 > <https://github.com/lbertz02/rfc4006bis/issues/51> > > > This doesn't seem dramatically clearer. What sort of an adversary can do > that? > > [yuval] in some cases e2e security is not possible, this is what this > section is addressing, the github issue is to clarify that > > -Ekr > > > > > > > ______________________________ _________________ > DiME mailing list > DiME@ietf.org > https://www.ietf.org/mailman/ listinfo/dime > <https://www.ietf.org/mailman/listinfo/dime> > > >
- [Dime] Eric Rescorla's No Objection on draft-ietf… Eric Rescorla
- Re: [Dime] Eric Rescorla's No Objection on draft-… Yuval Lifshitz
- Re: [Dime] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Dime] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Dime] Eric Rescorla's No Objection on draft-… Yuval Lifshitz
- Re: [Dime] Eric Rescorla's No Objection on draft-… Yuval Lifshitz
- Re: [Dime] Eric Rescorla's No Objection on draft-… Eric Rescorla
- Re: [Dime] Eric Rescorla's No Objection on draft-… Yuval Lifshitz
- Re: [Dime] Eric Rescorla's No Objection on draft-… Ben Campbell