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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