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Multicast was working, now session won't start

2014-06-11
2014-07-23
  • Steven Chevoor

    Steven Chevoor - 2014-06-11
    Post awaiting moderation.
  • Steven Chevoor

    Steven Chevoor - 2014-06-11

    I've found Multicast on port 2233 and not 2232 as specified.

    udp 0 0 224.0.0.1:2233 0.0.0.0:
    udp 0 0 192.168.1.255:2233 0.0.0.0:

    udp 0 0 192.168.1.254:2233 0.0.0.0:*

    /etc/drbl/drbl-ocs.conf:MULTICAST_ALL_ADDR="224.0.0.1"
    /etc/drbl/drbl-ocs.conf:MULTICAST_PORT="2232"

    There is nothing running at udp 2232.

    Why the change ?

    /etc/services is defined by default. Does this need to change ? (I don't think so).

    ivs-video 2232/udp # IVS Video default
    infocrypt 2233/udp # INFOCRYPT

     
  • Steven Chevoor

    Steven Chevoor - 2014-06-12

    This may be just my issue caused by not completely understanding the multicast procedure.

    I'm finding the mcast-port specification is a base port and any port in sequence above that may be used for an image transport.

    The DRBL server firewall was blocking a multicast procedure from starting and / or continuing. I lowered the firewall and a session completes.

    Now I'm researching a secure firewall configuration which allows multicasting for CLonezilla.

     
  • Steven Shiau

    Steven Shiau - 2014-06-14

    "The DRBL server firewall was blocking a multicast procedure from starting and / or continuing. " -> By default it does not. Did you manually tune your firewall rules?

    Steven.

     
  • Stan Omoregie

    Stan Omoregie - 2014-07-23
    Post awaiting moderation.

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