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  2. Network Access Control - Wikipedia

    en.wikipedia.org/wiki/Network_Access_Control

    Network access control is a computer networking solution that uses a set of protocols to define and implement a policy that describes how to secure access to network nodes by devices when they initially attempt to access the network. [3] NAC might integrate the automatic remediation process (fixing non-compliant nodes before allowing access ...

  3. IEEE 802.1X - Wikipedia

    en.wikipedia.org/wiki/IEEE_802.1X

    IEEE 802.1X is an IEEE Standard for port-based network access control (PNAC). It is part of the IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN . The standard directly addresses an attack technique called Hardware Addition [1] where an attacker posing as a guest ...

  4. Medium access control - Wikipedia

    en.wikipedia.org/wiki/Medium_access_control

    The channel access control mechanism relies on a physical layer multiplex scheme. The most widespread multiple access method is the contention-based CSMA/CD used in Ethernet networks. This mechanism is only utilized within a network collision domain, for example an Ethernet bus network or a hub-based star topology network.

  5. Network Admission Control - Wikipedia

    en.wikipedia.org/wiki/Network_Admission_Control

    Network admission control systems allow noncompliant devices to be denied access, placed in a quarantined area, or given restricted access to computing resources, thus keeping insecure nodes from infecting the network. The key component of the Cisco Network Admission Control program is the Cisco Trust Agent, which resides on an endpoint system ...

  6. Network security - Wikipedia

    en.wikipedia.org/wiki/Network_security

    Network security involves the authorization of access to data in a network, which is controlled by the network administrator. Users choose or are assigned an ID and password or other authenticating information that allows them access to information and programs within their authority. Network security covers a variety of computer networks, both ...

  7. Network interface controller - Wikipedia

    en.wikipedia.org/wiki/Network_interface_controller

    A network interface controller (NIC, also known as a network interface card, network adapter, LAN adapter and physical network interface) is a computer hardware component that connects a computer to a computer network. Early network interface controllers were commonly implemented on expansion cards that plugged into a computer bus.

  8. Networked control system - Wikipedia

    en.wikipedia.org/wiki/Networked_control_system

    Networked control system. A networked control system ( NCS) is a control system wherein the control loops are closed through a communication network. The defining feature of an NCS is that control and feedback signals are exchanged among the system's components in the form of information packages through a network.

  9. Computer access control - Wikipedia

    en.wikipedia.org/wiki/Computer_access_control

    Computer access control. In computer security, general access control includes identification, authorization, authentication, access approval, and audit. A more narrow definition of access control would cover only access approval, whereby the system makes a decision to grant or reject an access request from an already authenticated subject ...

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