Lower Layer Security Model

In its first draft, this document attempted to chisel in stone specific architectural preferences. This caused substantial conflicts and for some period the document became simply a set of Guidelines. A revival has since occurred. In its present form, the model addresses the following issues:

• The concepts that are generally applicable to Lower Layer Security Standards;
• General Guidelines for the selection and placement of security services and mechanisms;
• interactions between the layers (when at least one is a lower one) relating to security; and
• general requirements for security management across the lower layers.