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Issue 115: WGLC




Dave pointed out many days ago a number of editorial comments...
 

> Issue 115: WG Last Call Comments
> Submitter name: David Nelson
> Submitter email address: dnelson@enterasys.com Date first 
> (1) 
> 
> Within the confines of RADIUS authentication, authorization, 
> and accounting (AAA) environments, there is a general dearth 
> of standardized RADIUS attributes to limit user access using 
> dynamic VLANs, filters or redirection.
> 
> Could we change "a general dearth of" to "a requirement for"? 
> It sounds more positive.

[ms] Accepted. 

> 
> (2)
> 
> IEEE 802.1X-2004 [IEEE8021X] provides "network port 
> authentication" for IEEE 802 [IEEE802] media, including 
> Ethernet [IEEE8023], Token Ring and 802.11 wireless LANs [IEEE80211i].
> 
> Remove this sentence as it appears in the second paragraph as well.

[ms] Accepted. 

> 
> Section 1.1: The following definitions are not used in the draft:
> 
> Access Point
> Association
> Station
>  
> Requested change:
>  
> Please delete them.

[ms] Accepted.

> 
> Section 2: Better phrasing.
> 
> Requested changes:
> 
> (1) The first paragraph is awkwardly worded. Perhaps the 
> following would be an improvement. 
> 
> In this section we provide an elaboration of the requirements 
> briefly described in the Introduction.
> 
> (2)
> For example, the user maybe on
> a prepaid plan and all the resources have been used up.
> 
> Change "maybe" to "may be" and "resources have" to "credit 
> balance has".
> 
> (3)
> For example, the ability to block and
> redirect traffic is required for TCP users, cell phone users, 
> WiFi users.
> 
> Change "TCP users" to "IP users".
> 
> (4) Change:
> 
> As pointed out by [NASREQ] the use Filter-Id is not roaming 
> friendly and it is recommended that instead one should use NAS-
> Filter-Rule(TBD) AVP. For this reason, this document introduces
> NAS-Filter-Rule(TBD) to RADIUS.
> 
> To:
> 
> As pointed out by [NASREQ] the use Filter-Id is not roaming 
> friendly and it is recommended that instead one should adapt 
> the Diameter NAS-Filter-Rule AVP as a RADIUS 
> NAS-Filter-Rule(TBD) attribute.

[ms] Given the result of I114, section 2 may be eliminated entirely. 

 
> Section 2.1: This section seems out of place.
> 
> 2.1 Capability Advertisement
> 
> RADIUS does not currently define a method by which a NAS can 
> advertise its capabilities and in many instances, it would be 
> desirable for the home network to know what capabilities are 
> supported by the NAS to ensure proper operational behavior. 
> The attributes defined in this document are intended to be 
> used to enforce policy by the NAS. If a NAS does not 
> recognize these attributes it will most likely ignore them 
> and the desired policy will not be enforced. A method for the 
> NAS advertising the capability to support these attributes 
> would help the RADIUS server understand if the intended 
> policies can be enforced. As a result, the attributes in this 
> document, in particular NAS-Filter- Rule(TBD), can benefit 
> from capability advertisement, if available. 
> 
> Requested changes: 
> 
> Should this entire section perhaps be part of the Security 
> Considerations?

[ms]What is your rationale?

> 
> Section 3.5: Clarification of the text.
> 
> Requested changes:
> 
> Furthermore, the concatenated filter list must abide to the 
> following rules of precedence and ordering: 
> 
> 1) A flush rule MUST appear before all other rule types. 
> 
> Change "A flush rule" to "A flush rule, when present,".
> 
> 2) Base encapsulation filter rules MUST appear after a flush 
> rule and before IP tunnel, HTTP redirect, IP filter, and/or 
> HTTP filter rules.
> 
> Change "a flush rule" to "any flush rule".

[ms]This text changed due to actions decided upon for I102.  Take a look
at resolution for this issue. 

> 
> dir "in" is from the terminal, "out" is to the terminal, 
> "inout" is from and to the terminal.
> 
> The term "terminal" is not defined in the draft. I suspect it 
> identifies the network entity which contains the IEEE 802.1X 
> Supplicant function, but this should perhaps be clarified.

[ms] This sentence comes by way of the IPFilterRule description found in
Diameter [RFC3588].  What would you suggest we do for RADIUS. Is
terminal not a globally known term in RADIUS, if not, is there any?
Perhaps can you suggest a definition to add to the terminology section. 

> 
> General comment: I'd much rather that we use ABNF to define 
> the NAS-Filter-Rule formal syntax, however I'm not prepared 
> to submit that text just now. :-)

[ms] Agree. It has been done (or at least started) due to resolution of
I102. :)

> 
> Section 4.1
> 
> 4.1. Acct-NAS-Filter-Rule
> 
> The first eight octets of this string are used for a 64-bit 
> value of the rule counter. The remaining octets are used to 
> specify which filter rule the counter value is for. The rule 
> specification MUST conform to the syntax rules specified for 
> NAS-Filter-Rule[TODO].
> 
> [TODO] indicates an open action item.
> 
> Requested changes:
> 
> Provide the [TODO].

[ms] TODO should actually be TBD.  We don't have a IANA value associated
with this attribute, yet.  All TBD's will change to the IANA assigned
values as the right juncture. 


Cheers,
MS

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