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Internet Group Management Protocol with Access Control
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<p>The Internet Group Management Protocol with Access Control (IGMP-AC) has been designed for incorporating <a href="/facts/AAA_protocol/r3yNV7Jc">AAA protocol</a> functionality in the existing <a href="/facts/IP_multicast/YklMRaV5">IP multicast</a> model. 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 <a href="/facts/Network_access_server/QRNucJBh">network access server</a> (NAS). </p><p>IGMP-AC is an extended version of <a href="/facts/Internet_Group_Management_Protocol/MEzn1aTF">Internet Group Management Protocol</a> version 3. It provides a generic client-server authentication protocol, where the receiver or end user will act as a client, the AAA server will act as a server and the access router (one-hop router of the receiver) will perform the forwarding task. Thus, any suitable authentication protocol (e.g., <a href="/facts/Extensible_Authentication_Protocol/yuCAFHxC">Extensible Authentication Protocol</a> (EAP)) having client-server entities can be encapsulated over the IGMP-AC architecture. The IGMP-AC will not disrupt the usual function of the IGMPv3 (to be used for classical multicast group), and the <a href="/facts/Access_control/08zE5Pz8">access control</a> mechanism of IGMP-AC will take place to join/leave a secured or restricted multicast group only. </p>