Re: Review of draft-ietf-nextext-radius-pmip6

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On Jan 11, 2012, at 9:04 AM, Bernard Aboba wrote:

> Message-Authenticator should be mandatory (1 1 1 1).

Ack. Thanks Bernard.

- Jouni




> 
> 
> On Jan 10, 2012, at 22:30, "jouni korhonen" <jouni.nospam@xxxxxxxxx> wrote:
> 
>> Bernard,
>> 
>> Thank you for your review. See my comments inline.
>> 
>> 
>> On Jan 10, 2012, at 8:37 PM, Bernard Aboba wrote:
>> 
>>> The document appears to contain typos in sections 4.16 and 4.17.   
>>> 
>>> In section 4.16, it appears that "Home LMA IPv6 address" should be replaced by "Home DHCPv6 server address":
>> 
>> Blimey.. we'll fix this.
>> 
>>> 4.16.  PMIP6-Home-DHCP6-Server-Address
>>> 
>>> 
>>> 
>>>   0                   1                   2                   3
>>>   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>  |      Type     |   Length      |  Home DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>                    Home DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>                    Home DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>                    Home DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>       Home LMA IPv6 address      |
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>> 
>>> In Section 4.17, it appears that "Visited LMA IPv6 address" should be replaced by "Visited DHCPv6 server address":
>> 
>> And the same here..
>> 
>> 
>>> 
>>> 4.17.  PMIP6-Visited-DHCP6-Server-Address
>>> 
>>> 
>>>   0                   1                   2                   3
>>>   0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>  |      Type     |   Length      | Visited DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>                   Visited DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>                   Visited DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>                   Visited DHCPv6 server address
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>>     Visited LMA IPv6 address     |
>>>  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>>> 
>>> 
>>> 5.2.  Table of Attributes
>>> 
>>> 
>>>  The following table provides a guide to attributes that may be found
>>>  in authentication and authorization RADIUS messages between MAG and
>>>  the AAA Server.
>>> 
>>> 
>>> Request Accept Reject Challenge #  Attribute
>>> 
>>>  0-1     0-1    0-1    0-1      80  Message-Authenticator
>>> 
>>> 
>>> 
>>> [BA] The Message-Authenticator attribute is mandatory-to-implement in a number of 
>>> RADIUS usages, including EAP (RFC 3579).  Leaving out Message-Authenticator could 
>>> result in Access-Requests lacking authentication and
>>> integrity protection.  RFC 6158 Section 3.1 states:
>> 
>> Good point. So, you are saying that we should have:
>> 
>>  1       0-1    0-1    0-1      80  Message-Authenticator
>> 
>> or would 
>> 
>>  1       1      1      1        80  Message-Authenticator
>> 
>> be even better as RFC3759 & 5090 do?
>> 
>> 
>> - Jouni
>> 
>> 
>> 
>>> 
>>>  While [RFC2865] did not require authentication and integrity
>>>  protection of RADIUS Access-Request packets, subsequent
>>>  authentication mechanism specifications, such as RADIUS/EAP [RFC3579]
>>>  and Digest Authentication [RFC5090], have mandated authentication and
>>>  integrity protection for certain RADIUS packets.  [RFC5080], Section
>>>  2.1.1 makes this behavior RECOMMENDED for all Access-Request packets,
>>>  including Access-Request packets performing authorization checks.  It
>>>  is expected that specifications for new RADIUS authentication
>>>  mechanisms will continue this practice.
>>> 
>>> 
>>> 
>>> 
>>> 
>>> _______________________________________________
>>> Ietf mailing list
>>> Ietf@xxxxxxxx
>>> https://www.ietf.org/mailman/listinfo/ietf
>> 

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