What is UDP traffic?

Discussion in 'macOS' started by doug.hall, Feb 27, 2006.

  1. doug.hall macrumors regular

    Joined:
    Jul 28, 2005
    Location:
    London
    #1
    Just found identified that for me to fix an issue with iTunes multiple speakers I need to open two UDP ports (6001 and 6002) on my firewall. What does this mean and could this cause a problem with the security of my network?

    Basically, whats the impact on me if I open them?
     
  2. iMeowbot macrumors G3

    iMeowbot

    Joined:
    Aug 30, 2003
    #2
    I suppose that an evil attacker could use the open ports to broadcast really awful music to your network, but that' about the worst :)

    UDP is sort of TCP/IP Lite. It's the same old network connections with a little bit less handshaking. It's useful for stuff like live audio where there's no point in going back to recover lost bits if the line hiccups.
     
  3. doug.hall thread starter macrumors regular

    Joined:
    Jul 28, 2005
    Location:
    London
  4. doug.hall thread starter macrumors regular

    Joined:
    Jul 28, 2005
    Location:
    London
    #4

    If I have 4 devices on my network do I need to open 4 ports? i.e. 6001, 2, 3 and 6004?
     
  5. iMeowbot macrumors G3

    iMeowbot

    Joined:
    Aug 30, 2003
    #5
    You can have more than one connection going to the same port. The name "port" is kind of misleading, it's more of an address than a placeholder for a connection.
     
  6. SunnyDayGal macrumors newbie

    Joined:
    Jul 15, 2008
    #6
    UDP explanation


    Just want to say thanks and let you know something you shared here SO long ago is still helping people. :)


    SDG
     

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