Network access control is the act of keeping unauthorized users and devices out of a private network. Organizations that give certain devices or users from outside of the organization occasional access to the network can use network access control to ensure that these devices meet corporate security compliance regulations.  A network access control also blocks access from endpoint devices that do not comply with corporate security policies. This ensures that a virus cannot enter the network from a device that originates from outside of the organization.  Network security protects the functionality of the network, ensuring that only authorized users and devices have access to it, that those devices are clean, and that the users are who they say they are.  

One advantage of network access controls is that users can be required to authenticate via multi-factor authentication, which is much more secure than identifying users based on IP addresses or username and password combinations. 

Secure network access control also provides additional levels of protection around individual parts of the network after a user has gained access, ensuring application security. Some network access control solutions may include compatible security controls such as encryption and increased network visibility. 

Common Use cases for Network access control

• Bring Your Own Device (BYOD)
• Network access for non-employees
• Use of IoT devices