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Multicasting over public network

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  • 03-12-2004 4:35pm
    #1
    Stky10
    Registered Users Posts: 1,165 ✭✭✭


    Just writing a technical proposal in work, and I'm thinking that
    Multicasting could save a lot of bother. I'm just wondering though
    if multicasting can be used over a public network (ie the internet)
    and would security be an issue (ie only want a specific number
    of hosts to receive the data, and dont want any non-authorised
    users).

    Any mention I've heard of multicasting before has always been
    for internal networks where security wouldnt be that much of
    an issue.


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    #2
    po0k
    Registered Users Posts: 15,815 ✭✭✭✭po0k


    From my limited experience of it, each AS network is given a block of Class-D address space for multicast.
    That should/may help with the tied down part.

    Afaik, there are higher-level mthods for securing access, but nothing like a VPN afaik.


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    #3
    BobTheBeat
    Registered Users Posts: 1,048 ✭✭✭BobTheBeat


    I wouldn't say it would be a problem in a public (non-secured) network. Cisco in fact have an implementation of the routing protocol OSPF called MOSPF (Multicast Open Shortest Path First) which makes each router understand the link states in the network.


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