Network Access Control

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  • darknet

    A darknet is a routed allocation of IP address space that is not discoverable by any usual means. 

  • network access control (NAC)

    Network access control (NAC), also called network admission control, is a method of bolstering the security of a proprietary network by restricting the availability of network resources to endpoint devices that comply with a defined security policy..... 

  • well-known port numbers

    The well-known port numbers are the port numbers that are reserved for assignment by the Internet Corporation for Assigned Names and Numbers (ICANN) for use by the application end points that communicate using the Internet's Transmission Control Prot... 

  • Address Resolution Protocol (ARP)

    Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP address) to a physical machine address that is recognized in the local network. 

About Network Access Control

Network access control (NAC) and network access protection (NAP) ensure endpoint security through policies that grant only specified network access. Use these resources to determine what method of network access control provides the right security solution for your enterprise network. You'll also find information about creating access control lists (ACLs) to secure your routers and network systems.