Perspective: Infoblox is a vendor of Network Identity Infrastructure (NII) equipment. NII encompasses the systems (databases, protocols and tools) used to store, deliver and manage the information about users, devices, and policies that makes it possible for people to have access to the right networks at the right time. NII systems interface with and/or support other complementary systems such as identity management (e.g. certificate authorities, tokens, etc.), single sign-on (SSO), network security management, or Web services systems that are used to provision users and devices and to assign their roles in some application specific context. We view open and standard policy interoperability of critical importance to the collaborative nature of emerging user aware network applications. Position: We have both a "use case" to contribute to the discussions as well as an agenda for driving openness and interoperability among policy enforcement, policy decision making, and policy management solutions. We have a data centric policy abstraction geared toward the network security market consisting of simple ordered five tuples of predicates. For example a single firewall rule might be defined: Agents = [IP Address = 10.0.0.0/8] Data = [tuple = f1:f2:f3:f4] [f2 = udp] Operations = [move from out to in] [move from in to out] Order = [Lowest] Decsion Class = [Deny] We are interested standards based notation and/or transforms for interoperating our policy abstraction with others in the community. We would be happy to present our position in greater depth if requested. Please contact: Stuart Bailey and Ivan Pulleyn Infoblox sbailey@infoblox.com, ivan@infoblox.com http://www.infoblox.com/