What is Network Access control? Importance & Capabilities of NAC

What is Network Access control? Importance & Capabilities of NAC

What is NAC?

Network access control, or NAC, is a security solution that helps to manage network visibility and access. NAC can be used to enforce policy on devices and users that enter the network, as well as control access to network resources. By doing so, NAC can help to prevent unauthorized access to the network and improve network security. Additionally, NAC can help with an incident response by providing visibility into which devices are connected to the network and what they are doing. NAC is basic for present-day organizations since it permits associations to screen the gadgets and clients – approved and unapproved – attempting to get to the organization. 

Unapproved clients incorporate cybercriminals, programmers and information criminals, and other agitators that an association should keep out. Be that as it may, organizations should likewise be watchmen for approved clients. This especially applies to associations. First, that permits remote admittance to the undertaking network from non-corporate gadgets like cell phones, workstations, tablets, or organizations. That allows representatives working in the workplace to utilize individual devices. The two situations make security hazards requesting associations to address network security. 

NAC is one part of organization security. It gives visibility into the gadgets and clients attempting to get to the undertaking organization. Moreover, it controls who can get to the organization, including denying admittance. Those clients and devices that don’t consent to security strategies. NAC arrangements and instruments assist organizations with controlling access, guaranteeing consistency, and fortifying their IT foundation.

Why Use NAC?

There are many reasons to use a network access control solution, but the two most important are visibility and security. NAC solutions give you visibility into who and what is on your network in real-time and the ability to enforce pre-admission policies on users and devices. This helps ensure that only authorized users and devices have access to your network and that all traffic is monitored to comply with your security policies.

Why do you need network access control (NAC)? 

Whether you have a little organization with simply a modest bunch of gadgets or a rambling undertaking network. That incorporates a large number of devices. NAC is a basic part of your general security system for several reasons. 

1- Unapproved gadgets 

It’s not difficult to add gadgets to an organization. However not generally so natural to follow them. Thus, associations run a great danger of having unapproved devices in their organizations. 

Representatives might carry PCs or telephones to work. It associates them to the organization without appropriately enrolling them under the particulars of your organization’s BYOD strategy, for instance. Or on the other hand, an IT group may set up gadgets for testing. So it is, although they are as yet running. NAC assists with keeping unapproved devices from being joined to your organization in any case.

2- Outsider access 

Enormous associations routinely work with workers for hire, accomplices, and outsider providers and should sometimes award these outer partners admittance to their organization. However, without a powerful NAC technique, it’s truly challenging to ensure that these external gadgets are appropriately gotten and don’t turn into a vector for an assault on your organization. It’s likewise hard to guarantee that the devices are separated when they are presently not required. 

3- Information security laws 

Government offices and industry bunches have presented progressively strict guidelines and information security laws. That administer which sorts of information are gathered and put away by an association. Without NAC, organizations need visibility into the types of assets that exist in their organization regardless of whether uncommon consistency rules might apply to them. 

Therefore, some associations looking to remain in front of safety challenges and administrative issues should foster a viable NAC system.

How Is A NAC solution Installed?

Network access control (NAC) solutions are installed to support network visibility and access management through policy enforcement on devices and users of corporate networks. NAC can be used for both post-admission and pre-admission enforcement. Pre-admission enforcement requires the user or device to authenticate before being allowed onto the web. In contrast, post-admission enforcement allows all users and devices onto the network but enforces policies on what they can do once they’re on it.

Importance of Network Access Control (NAC)

1- Further developed Security 

Since NAC supervises all gadgets used across the association, it upgrades security while validating clients and devices the second they enter the organization. The capacity to screen network movement and promptly move against unapproved or surprising conduct implies that malware dangers and other cyber-attacks are diminished. 

2- Saves Costs 

The robotized following and security of gadgets at scale convert into cost investment funds for associations because fewer IT assets are required. Further, impeding unapproved access or a suspected malware assault keeps organizations from experiencing monetary misfortunes that might result if those exercises are not obstructed. 

3- Automation

As the number and assortment of gadgets associations use to keep expanding, associations can’t physically check. Clients and their endpoints’ security approach as they endeavor to enter the organization. The computerization provisions of NAC offer huge proficiency in the most common way of verifying clients and gadgets and approving access. 

4- Upgraded IT Experiences 

Consistent access makes the client experience friction when associating with the organization. That the controls set up working behind the scenes gives clients certainty that their IT experience ensures no work on their part. 

5- Simplicity of Control 

The visibility elements of NAC adequately fill in as a day-in and day-out stock of the relative multitude of endpoints approved by the association. This is useful when IT needs to figure out which endpoints or clients concede admittance to the organization and forever cycles the executives when gadgets are eliminated or supplanted.

Capabilities and goals of network access control

NAC gadgets authorize security arrangements across all clients and devices on an organization through various capacities, like the accompanying: Cut-off network admittance to clients and explicit organization regions; Forestall information access by unapproved workers and cybercriminals; Square access from endpoint gadgets (e.g., cell phones) that don’t follow undertaking security arrangements; Lifestyle. Oversee strategy lifecycle for various working situations; Perceive and profile clients to shield them from malicious code; incorporate other security arrangements through application program interfaces.

Benefits Of Using A NAC Solution

A NAC solution can offer many benefits for both IT professionals and end users. A NAC can make monitoring and managing network activity easier by centralizing control over devices and users. Additionally, NAC solutions can help secure remote access to corporate networks and provide granular control. Which devices and users are allowed to access specific resources.

Common Terms Used In The Industry

A few common terms are used in the industry when discussing NAC solutions. Here are a few to be aware of:
1-IP addresses: Every device that connects to the internet has a unique IP address.
2- Network access control (NAC): A security measure regulating which devices and users have access to a network.
3- IoT devices: Refers to any device that connects to the internet, including everything from smartphones to industrial machines.

Examples Of Some Major Brands That Offer Such Solutions

Cisco’s Identity Services Engine (ISE) is a network access control and policy management platform that provides software-defined segmentation of users, devices, and apps. In addition, ISE integrates with Cisco security solutions like the Firepower Next-Generation Firewall (NGFW) to offer comprehensive endpoints security.
Other major brands that offer similar solutions include Aruba ClearPass, Forcepoint NGFW, Juniper Networks Junos Space Security Director, and Palo Alto Networks GlobalProtect.


NAC can be an important tool for businesses to maintain network visibility and access management. For example, companies can ensure that only authorized devices and users can access the network by enforcing policies on devices and users. NAC can also help businesses prevent unauthorized access to sensitive data and limit the spread of malware or other malicious activity on the network.


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