By Denise Helfrich, Lou Ronnau, Jason Frazier, Paul Forbes
Cisco community Admission Control
Volume I: NAC Framework structure and Design
A consultant to endpoint compliance enforcement
Today, numerous defense demanding situations impact all companies despite dimension and site. businesses face ongoing demanding situations with the struggle opposed to malware equivalent to worms, viruses, and spy ware. Today’s cellular group connect quite a few units to the company community which are more durable to regulate from a safety coverage standpoint. those host units are frequently missing antivirus updates and working process patches, therefore exposing the full community to an infection. hence, worms and viruses proceed to disrupt enterprise, inflicting downtime and continuous patching. Noncompliant servers and pcs are a ways too universal and are tricky to notice and comprise. finding and keeping apart contaminated desktops is time eating and source intensive.
Network Admission keep watch over (NAC) makes use of the community infrastructure to implement defense coverage compliance on all units trying to entry community computing assets, thereby proscribing harm from rising defense threats. NAC permits community entry purely to compliant and relied on endpoint units (PCs, servers, and PDAs, for instance) and will limit the entry of or even remediate noncompliant devices.
Cisco community Admission Control, quantity I, describes the NAC structure and offers an in-depth technical description for every of the answer elements. This ebook additionally presents layout guidance for implementing community admission rules and describes the best way to deal with NAC agentless hosts. As a technical primer, this e-book introduces you to the NAC Framework answer elements and addresses the structure at the back of NAC and the protocols that it follows so that you can achieve a whole knowing of its operation. pattern worksheets assist you assemble and arrange requisites for designing a NAC solution.
Denise Helfrich is a technical application revenues engineer that develops and helps worldwide on-line labs for the area huge revenues strength improvement at Cisco®.
Lou Ronnau, CCIE® No. 1536, is a technical chief within the utilized Intelligence workforce of the buyer insurance defense perform at Cisco.
Jason Frazier is a technical chief within the know-how platforms Engineering team for Cisco.
Paul Forbes is a technical advertising engineer within the workplace of the CTO, in the safeguard know-how staff at Cisco.
- Understand how a few of the NAC elements interact to protect your community
- Learn how NAC operates and identifies the kinds of knowledge the NAC answer makes use of to make its admission judgements
- Examine how Cisco belief Agent and NAC-enabled purposes interoperate
- Evaluate the method in which a coverage server determines and enforces a coverage
- Understand how NAC works while carried out utilizing NAC-L2-802.1X, NAC-L3-IP, and NAC-L2-IP
- Prepare, plan, layout, enforce, function, and optimize a community admission regulate solution
This safeguard publication is a part of the Cisco Press® Networking know-how sequence. protection titles from Cisco Press support networking pros safe severe information and assets, hinder and mitigate community assaults, and construct end-to-end self-defending networks.
Category: Cisco Press–Security
Covers: community Admission Control
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Extra resources for Cisco Network Admission Control, Volume I: NAC Framework Architecture and Design
A Use an audit server to scan hosts and determine their compliance state for policy enforcement. Guest network access can be determined by the compliance outcome. b No exceptions exist for nonconforming guests; network access is not allowed. c Configure a default access policy that only allows access to the Internet on the NAD supporting those conference rooms. d Have the conference room NADs provide a pool of IPs that are assigned to a guest DHCP pool and configure those IP addresses to be exempted on the NAD.
1X technology and explains how, when combined with NAC, it provides additional identity checking along with posturing. Chapter 6, "NAC Layer 3 Operations"舒This chapter describes how NAC works when implemented using NAC-L3-IP and NAC-L2-IP. This chapter begins by describing the Extensible Authentication Protocol over User Datagram Protocol (EAPoUDP) framework, which is fundamental to triggering the NAC posturing process. Chapter 7, "Planning and Designing for Network Admission Control Framework"舒This chapter identifies important tasks that help you prepare, plan, design, implement, operate, and optimize a Network Admission Control Framework solution.
The more time that elapses before all endpoints are brought into compliance increases the risk. And that's the problem舒time itself. People cannot react quickly enough to ensure that all these safeguards are in place. An automated system is needed. Accessing a NAC Network Cisco NAC technology provides an automated mechanism to detect and enforce the network security policy. With NAC, the network can detect endpoints that are out of policy compliance before network access is granted. Figure 1-2 shows a network that utilizes NAC.
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