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Cisco Network Admission Control, Volume I: NAC Framework Architecture and Design by Paul Forbes, Jason Frazier, Lou Ronnau, Denise Helfrich

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Chapter 4Posture Validation Servers

This chapter covers the following topics:

Posture Validation Servers:

Cisco Secure Access Control Server

NAC Framework solution with external policy servers

Audit servers

Posture policy planning

Posture policy rules

NAC agentless hosts and whitelisting techniques

Authorization

Enforcement actions

A posture validation server acts as the central policy evaluation point in the Network Admission Control (NAC) Framework solution. A posture validation server inspects the attributes contained in the credentials it receives from a host and compares them against the network's access policy. The policy consists of specific rules that represent the requirements for the privilege of network access. If ...

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