NAC - Network Access Control Home Cybersecurity Dictionary NAC - Network Access Control NAC is a security technology that provides visibility and control of devices accessing a corporate network. It is typically a solution stack that is used to: 1) gain visibility to IT resources that are accessing corporate networks, and 2) enforce granular role-based or policy-based access to those networks. Demand for NAC has grown in recent years partially in response to the proliferation of BYOD (Bring Your Own Device) and IoT devices which interact with corporate networks. Related TermsIAM - Identity and Access ManagementPAM - Privileged Access Management2FA (2-factor authentication) and MFA (multi-factor authentication)IoT - Internet Of Things Share: Seeking Clarity? View the Cybersecurity Dictionary for top terms searched by your peers. Back to the Dictionary How Can We Help? Let us know what you need, and we will have an Optiv professional contact you shortly.