Gartner Research

Using NAC to Reduce Risk Related to BYOD and Unmanaged Devices

Published: 31 October 2013

ID: G00250105

Analyst(s): Ben Tomhave, Eric Maiwald


Network access control is fundamentally about policy control, but the types of control vary widely, including basic network access, guest access, BYOD, and endpoint compliance. This assessment analyzes the myriad use cases in play today and describes the range of architectures available.

Table Of Contents

Summary of Findings


  • Business Drivers for NAC
  • Use Cases
    • Mainstream
    • One-Off/Emerging
  • Relationship of NAC to Other Technology Areas
  • Architectural Approaches
    • Preconnect Versus Postconnect
    • Impact on Network Infrastructure
    • Policy
    • VPN Support
    • Weaknesses in NAC Architectures
    • Concerns With Exceptions
    • Alternatives to NAC Architectures
  • Endpoint Posture and Compliance Assessment
  • Self-Service
  • Issues and Concerns
    • Governance, Organization and Culture
    • Network Infrastructure
    • Support and Operations
    • Managing Nonparticipating Endpoints


  • Gartner Definitions
  • Understand Business Drivers and Requirements Before Choosing a Product
  • Think About Use Cases, Not NAC as a Plug-In Solution
  • Follow Good Project Management Practices

The Details

  • Vendors
  • Architectures
    • 802.1X
    • OOB
    • In-Line
    • DHCP

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