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Subject: Re: [xacml] WS-Policy and XACML comparison






Anne,
As you know there is already a specification called WS-Policy out in public
domain, so when you reference WS-Policy, I assume its the WS-Policy
specification, if not you need to clarify and select a different name (such
as Web services policy) so as not to confuse people reading these posts.

So with that said your note still confuses things as you say  "The more I
have studied WS-Policy requirements, the more I think XACML is the best
candidate for meeting them". Please tell us what you studied, and it seems
that this is based upon 1 presentation ? You then state that "I know, there
is no published Requirements Specification for WS-Policy, and that agreeing
on the requirements is one of the first tasks ahead of the group working on
WS-Policy", so which is it ?

Also the authors of WS-Policy (and family specifications) did present the
requirements during the policy requirements meeting in Redmond, but I did
not see that referenced in you write-up.



Anthony Nadalin | work 512.436.9568 | cell 512.289.4122


|---------+---------------------------->
|         |           Anne Anderson -  |
|         |           Sun Microsystems |
|         |           <Anne.Anderson@Su|
|         |           n.COM>           |
|         |                            |
|         |           02/26/2003 05:46 |
|         |           AM               |
|         |           Please respond to|
|         |           Anne.Anderson    |
|---------+---------------------------->
  >--------------------------------------------------------------------------------------------------------------------------------------------------|
  |                                                                                                                                                  |
  |       To:       Anthony Nadalin/Austin/IBM@IBMUS                                                                                                 |
  |       cc:       "'XACML'" <xacml@lists.oasis-open.org>                                                                                           |
  |       Subject:  Re: [xacml] WS-Policy and XACML comparison                                                                                       |
  >--------------------------------------------------------------------------------------------------------------------------------------------------|





"Anthony Nadalin" <drsecure@us.ibm.com> wrote:
>Somehow you have mistaken item [6] as WS--Policy requirements, whereas
>these are Tim's views and NOT requirements that drove WS-Policy, so I can
>see how you came to your conclusion !

Tony, I merely referenced Tim's document as one statement of requirements.
As far as I know, there is no published Requirements Specification for
WS-Policy, and that agreeing on the requirements is one of the first tasks
ahead of the group working on WS-Policy.

By the way, two of IBM's contributions to XACML may be very valuable in
addressing WS-Policy requirements:
a) Obligations: there may be an obligation on the service requester
   associated with application of a particular policy, although this
   obligation is transparent to the service provider.
b) Hierarchical resources

Anne
------
Anne Anderson          Anne.Anderson@Sun.COM
Sun Microsystems Laboratories
Burlington, MA         781-442-0928


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