What is Network Access Control (NAC) and how does it work?

by | Feb 21, 2021 | CCNA, CCNP, CompTIA, Exclusive Articles, Featured, Network Security

Network Access Control

What is Network Access Control (NAC)?

When a device tries to access a network, the device must comply with the security policy of the organization. For example, a device with outdated anti-malware software should not be able to access the network. If such a device accesses the network or communicates with a server with sensitive data, then malware like a worm may infect other devices of the network. Network Access Control or NAC is a networking solution that uses a set of protocols to restrict access to network resources by a device. It uses a defined security policy to determine whether a device should be provided access to a network and what activities the user can perform.

How does Network Access Control (NAC) work and what are the different types of NAC? In this article, we would discuss those in detail.


In this article, we will discuss:

  • What is Network Access Control (NAC)?

  • What are the different types of Network Access Control (NAC) and how do they work?

  • What are the capabilities of Network Access Control (NAC)?

  • What happens when a device is denied access by a Network Access Control (NAC) solution?

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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