SonicWALL 2.5 Benutzerhandbuch
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Firewall > Multicast
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Chapter 27:
Configuring Multicast Settings
Firewall > Multicast
Multicasting, also called IP multicasting, is a method for sending one Internet Protocol (IP) packet
simultaneously to multiple hosts. Multicast is suited to the rapidly growing segment of Internet traffic -
multimedia presentations and videoconferencing. For example, a single host transmitting an audio or
video stream and ten hosts that want to receive this stream. In mutlicasting, the sending host
transmits a single IP packet with a specific multicast address, and the 10 hosts simply need to be
configured to listen for packets targeted to that address to receive the transmission. Multicasting is a
point-to-multipoint IP communication mechanism that operates in a connectionless mode - hosts
receive multicast transmissions by “tuning in” to them, a process similar to tuning in to a radio.
simultaneously to multiple hosts. Multicast is suited to the rapidly growing segment of Internet traffic -
multimedia presentations and videoconferencing. For example, a single host transmitting an audio or
video stream and ten hosts that want to receive this stream. In mutlicasting, the sending host
transmits a single IP packet with a specific multicast address, and the 10 hosts simply need to be
configured to listen for packets targeted to that address to receive the transmission. Multicasting is a
point-to-multipoint IP communication mechanism that operates in a connectionless mode - hosts
receive multicast transmissions by “tuning in” to them, a process similar to tuning in to a radio.
The Firewall > Multicast page allows you to manage multicast traffic on the SonicWALL security
appliance.
appliance.