netstat 0.0.0.0:80

Discussion in 'Server Networking' started by Justwhatingtoknow, Nov 3, 2004.

  1. I have a question about how netstat displays the netstat -na results. On
    some server w2k/2wk3 I do a netstat -na I see that port 80 is displayed as
    0.0.0.0:80 and on other systems it show as the acutal ip... ie 12.12.12.12:80.
    This occurs even if IIS is set the same way. Where is the difference coming
    from. Where does netstat actually get is info... from the registry?
    Thanks in advanced.
    Justwhatingtoknow, Nov 3, 2004
    #1
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  2. "Justwhatingtoknow" <> wrote in
    message news:...
    >I have a question about how netstat displays the netstat -na results. On
    > some server w2k/2wk3 I do a netstat -na I see that port 80 is displayed as
    > 0.0.0.0:80 and on other systems it show as the acutal ip... ie
    > 12.12.12.12:80.
    > This occurs even if IIS is set the same way. Where is the difference
    > coming
    > from. Where does netstat actually get is info... from the registry?
    > Thanks in advanced.


    0.0.0.0 means it's listening on all interfaces. Maybe not waht you want.
    MS now has a port query tool and a parser to view the results. Also
    sysinternals has tcpview. I like tcpview becuase it's graphical.

    Matt
    MCT, MCSE
    Matt Anderson, Nov 4, 2004
    #2
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  3. Justwhatingtoknow

    Mike Guest

    The machine that displays the actual address may only have one static
    address configured, and the other may have addresses aliased, or have
    multiple interfaced (multihomed).

    That would make the netstat report that it is listening on 0.0.0.0:80 (all
    active interfaces)

    -Mike
    "Matt Anderson" <> wrote in message
    news:...
    >
    > "Justwhatingtoknow" <> wrote in
    > message news:...
    >>I have a question about how netstat displays the netstat -na results. On
    >> some server w2k/2wk3 I do a netstat -na I see that port 80 is displayed
    >> as
    >> 0.0.0.0:80 and on other systems it show as the acutal ip... ie
    >> 12.12.12.12:80.
    >> This occurs even if IIS is set the same way. Where is the difference
    >> coming
    >> from. Where does netstat actually get is info... from the registry?
    >> Thanks in advanced.

    >
    > 0.0.0.0 means it's listening on all interfaces. Maybe not waht you want.
    > MS now has a port query tool and a parser to view the results. Also
    > sysinternals has tcpview. I like tcpview becuase it's graphical.
    >
    > Matt
    > MCT, MCSE
    >
    Mike, Nov 4, 2004
    #3
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