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In computer security, an access-control list (ACL) is a list of permissions [a] associated with a system resource (object or facility). An ACL specifies which users or system processes are granted access to resources, as well as what operations are allowed on given resources. [1] Each entry in a typical ACL specifies a subject and an operation.
Network access control (NAC) is an approach to computer security that attempts to unify endpoint security technology (such as antivirus, host intrusion prevention, and vulnerability assessment), user or system authentication and network security enforcement.
This article lists protocols, categorized by the nearest layer in the Open Systems Interconnection model.This list is not exclusive to only the OSI protocol family.Many of these protocols are originally based on the Internet Protocol Suite (TCP/IP) and other models and they often do not fit neatly into OSI layers.
Directory Utility - a utility for configuring access to several types of directory servers, including LDAP; built into Mac OS X. Workgroup Manager - a utility for configuring access to several types of directory servers, including LDAP; built into Mac OS X Server and one of Apple's Server Admin Tools. Slapd - from the Univ of Michigan
It will enforce authentication and authorization of an end user or receiver before joining or leaving a secured multicast group. To add AAA functionality, an access router or one-hop router of the receiver will act as a network access server (NAS). IGMP-AC is an extended version of Internet Group Management Protocol version 3. [1]
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TACACS and XTACACS both allow a remote access server to communicate with an authentication server in order to determine if the user has access to the network. TACACS Plus ( TACACS+ ) is a protocol developed by Cisco and released as an open standard beginning in 1993.
Practical protocol solutions exist to the hidden node problem. For example, Request To Send/Clear To Send (RTS/CTS) mechanisms where nodes send short packets to request permission of the access point to send longer data packets. As responses from the AP are seen by all the nodes, the nodes can synchronize their transmissions to not interfere.