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Network activity almost constant? - Mac Networking

The activity light on my cable modem and the rightmost light on the Airport Extreme base station connected to it flash almost constantly, even when all networked machines in my house are off or sleeping. Is this something I should be concerned about? What is the likely cause? -- -Thomas <http://www.bitjuggler.com/>...

  1. #1

    Default Network activity almost constant?

    The activity light on my cable modem and the rightmost light on the
    Airport Extreme base station connected to it flash almost constantly,
    even when all networked machines in my house are off or sleeping. Is
    this something I should be concerned about? What is the likely cause?

    --
    -Thomas

    <http://www.bitjuggler.com/>
    Thomas Guest

  2. #2

    Default Re: Network activity almost constant?

    In article <050320040717515549%spam.me>,
    Thomas Reed <spam.me> wrote:
     

    Maybe someone is using your network? Do you have WEP or WPA turned on?

    --
    Jim Meiss
    <http://amath.colorado.edu/faculty/jdm>
    James Guest

  3. #3

    Default Re: Network activity almost constant?

    In article <colorado.edu>, James
    Meiss <invalid> wrote:
     

    Yup, I have 128-bit WEP activated. (I tried WPA, but that made it
    impossible to access the network from my old Wallstreet running
    10.2.8.) And this is in a residential area where really only one house
    could potentially be close enough to access my network. Those
    neighbors don't seem the type to hack the password and hijack my
    network. They probably wouldn't even know how, and their only child is
    2, so I doubt it's her! :-)

    --
    -Thomas

    <http://www.bitjuggler.com/>
    Thomas Guest

  4. #4

    Default Re: Network activity almost constant?

    Thomas Reed <spam.me> wrote:
     

    This is normal. The right LED signals activity on the base station's
    Ethernet LAN or WAN ports
    <http://docs.info.apple.com/article.html?artnum=107457>. Cable modems
    don't have built-in firewalls, so they pass along all traffic addressed
    to the modem's IP address, including a lot of packets that are basically
    harmless noise as well as some not-so-innocent attempts to attack or
    disable your network. Your base station will block almost all of this
    unwanted traffic from appearing on your local network; but for extra
    peace of mind, you should enable only those Sharing services on your
    Macs that you really need and turn on the firewall for those services.

    Neill Guest

  5. #5

    Default Re: Network activity almost constant?

    In article <1ga8x0b.jdihj11or0pqqN%net>, Neill
    Massello <net> wrote:
     

    Interesting! I assume most of these attacks are automated, and simply
    scan through every address on the 'net to try to find a vulnerable
    machine?

    --
    -Thomas

    <http://www.bitjuggler.com/>
    Thomas Guest

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