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UDP 1900 Broadcast to

Discussion in 'Tomato Firmware' started by jochen, Aug 23, 2008.

  1. jochen

    jochen Network Guru Member

    When I look at /proc/net/ip_conntrack I see a line
    udp      17 3 src= dst= sport=1900 dport=1900 [UNREPLIED] src= dst= sport=1900 dport=1900 use=1 mark=0
    This has something to do with Windows networking.
    But why is this broadcast to the internet? :confused:
    And why is Tomato the source of this broadcast?
  2. PeterT

    PeterT Network Guru Member

  3. Toxic

    Toxic Administrator Staff Member

    these are Multicast broadcasts, the IP Addressing gives it away. Its a Class D Address.

    if you dont need upnp then turn it off.

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