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This paper argues that security design for Open DistributedProcessing (ODP) would benefit from a shift of focus from the infrastructure toindividual servers as the owners and enforcers of security policy. It debates thepolicy nuances, mechanisms, and protocol design consequences, that would followfrom such a change of emphasis. In ODP, physically separate systems federateinto heterogeneous networks of unlimited scale, so there can be no centralauthority, nor ubiquitous security infrastructure. Servers that offer,trade, supply and consume services must maintain their own security policies anddefend themselves. For servers to take security policy and enforcementdecisions, design is concerned with how they might seek advice and guidance fromhigher authority. This contrasts with an administrator imposed policyon a closed homogeneous network, where an infrastructure enforcesadministrator declared access rights to potential clients, including rights to delegate rights.

Towards security in an open systems federation