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All-systems.mcast.net

prezmc
I am seeing a lot of traffic going from my internal server over udp port 626 to ALL-SYSTEMS.MCAST.NET (224.0.0.1).  This is some multicast traffic, but I don't know what for.

It's blocked by default, but I don't know if it needs to be.  Anyone have some insight?


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  • 0
    What services are running on your internal server?

    It's probably best to leave it blocked, to keep it off the internet, unless you have a need for it. It'd still work on the LAN.

    Barry
  • 0
    DNS Records

    Base Record Name IP Reverse Route AS
    all-systems.mcast.net
    10 hours old
    a 224.0.0.1
    (none)
    ?
    mcast.net
    23 hours old
    ns b.iana-servers.net
    23 hours old
    2001:500:8d::53
    (none)
    199.43.133.53
    199.43.133.0/24
    AS1280
    ISC- Internet Systems Consortium, Inc.
    ns.icann.org
    23 hours old
    2001:500:89::53
    ?
    199.4.138.53
    199.4.138.0/24
    NS.ICANN.ORG
    AS26710
    ICANN-DNS-Anycast ICANN DNS Operations Anycast
    c.iana-servers.net
    23 hours old
    2001:648:2c30::1:10
    ?
    139.91.1.10
    139.91.0.0/16
    FORTH
    AS8522
    FORTH-AS Foundation for Research and Technology Hellas
    a.iana-servers.net
    3 hours old
    2001:500:8c::53
    ?
    199.43.132.53
    199.43.132.0/24
    a.iana-servers.net
    AS42
    Packet Clearing House - www.pch.net
    d.iana-servers.net
    2 days old
    2620:0:2ee0:2::153
    ?
    199.4.29.153
    199.4.29.0/24
    ICANN DNS Operations Network East Coast
    AS23518
    ICANN-DNS-OPs-E ICANN DNS Operations - East Coast
    mx 0 pechora.icann.org
    1 day old
    2620:0:2d0:201::1:72
    (none)
    ?
    2620:0:2830:201::1:73
    2620:0:2830:201::1:71
    2620:0:2d0:201::1:74
    192.0.33.72
    192.0.32.0/22
    ICANN Servers Network LAX
    AS40528
    ICANN-LAX ICANN LAX
    192.0.46.72
    192.0.44.0/22
    ICANN Servers Network DC
    AS16876
    ICANN-DC ICANN DC
    192.0.33.71
    192.0.32.0/22
    ICANN Servers Network LAX
    AS40528
    ICANN-LAX ICANN LAX
    192.0.46.73
    192.0.44.0/22
    ICANN Servers Network DC
    AS16876
    ICANN-DC ICANN DC
    192.0.46.74
    192.0.33.74
    192.0.32.0/22
    ICANN Servers Network LAX
    AS40528
    ICANN-LAX ICANN LAX
    192.0.33.73
    192.0.46.71
    192.0.44.0/22
    ICANN Servers Network DC
    AS16876
    ICANN-DC ICANN DC
    net   icann.org   org   iana-servers.net