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802.1X-2001 defines two logical port entities for an authenticated port—the "controlled port" and the "uncontrolled port". The controlled port is manipulated by the 802.1X PAE (Port Access Entity) to allow (in the authorized state) or prevent (in the unauthorized state) network traffic ingress and egress to/from the controlled port.
The IEEE 802.1X standard [1] uses the term "supplicant" to refer to either hardware or software. In practice, a supplicant is a software application installed on an end-user's computer. The user invokes the supplicant and submits credentials to connect the computer to a secure network. If the authentication succeeds, the authenticator typically ...
Xsupplicant is a supplicant that allows a workstation to authenticate with a RADIUS server using 802.1X and the Extensible Authentication Protocol (EAP). It can be used for computers with wired or wireless LAN connections to complete a strong authentication before joining the network and supports the dynamic assignment of WEP keys.
The Lightweight Extensible Authentication Protocol (LEAP) method was developed by Cisco Systems prior to the IEEE ratification of the 802.11i security standard. [3] Cisco distributed the protocol through the CCX (Cisco Certified Extensions) as part of getting 802.1X and dynamic WEP adoption into the industry in the absence of a standard.
Other implementations exist, such as the xsupplicant from the Open1x.org project, and wpa_supplicant. As with other 802.1X and EAP types, dynamic encryption can be used with PEAP. A CA certificate must be used at each client to authenticate the server to each client before the client submits authentication credentials.
Merged into 802.1X-2004 802.1X-2004: Port Based Network Access Control (Rollup of 802.1X-2001 and P802.1aa) Incorporated into 802.1Q-2005 P802.1af Media Access Control (MAC) Key Security Merged into 802.1X-2010 802.1X-2010: Port Based Network Access Control Superseded by 802.1X-2020 [29] 802.1Xbx-2014 MAC Security Key Agreement protocol (MKA ...
Network Admission Control (NAC) refers to Cisco's version of network access control, which restricts access to the network based on identity or security posture.When a network device (switch, router, wireless access point, DHCP server, etc.) is configured for NAC, it can force user or machine authentication prior to granting access to the network.
IEEE 802 is a family of Institute of Electrical and Electronics Engineers (IEEE) standards for local area networks (LANs), personal area networks (PANs), and metropolitan area networks (MANs). The IEEE 802 LAN/MAN Standards Committee (LMSC) maintains these standards.