One-way Network Problem

Discussion in 'Wireless Networking' started by Linw, Apr 16, 2005.

  1. Linw

    Linw Guest

    This one has stumped me. I set up a client's network which worked fine
    at my address but two days later has a puzzling problem. Consists of a
    USRobotics 9106 wifi modem/router/switch, an XP desktop connected to the
    switch with ethernet cable, and an XP Laptop connecting via a wifi adaptor.

    Both can access the Internet. The laptop can access the desktop share
    and ping it with no problem. But the desktop has BIG trouble pinging the
    laptop. Sometimes pings get through with big delays but mostly they time
    out. So we have a link that acts a bit like a diode - only works one way!

    The desktop NIC has a static address (192.168.1.2) with proper subnet
    mask and correct DNS entries.

    Any bright ideas as to what I can do to track down the problem?

    TIA.
    Linw, Apr 16, 2005
    #1
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  2. Linw

    atec Guest

    Linw wrote:
    > This one has stumped me. I set up a client's network which worked fine
    > at my address but two days later has a puzzling problem. Consists of a
    > USRobotics 9106 wifi modem/router/switch, an XP desktop connected to the
    > switch with ethernet cable, and an XP Laptop connecting via a wifi adaptor.
    >
    > Both can access the Internet. The laptop can access the desktop share
    > and ping it with no problem. But the desktop has BIG trouble pinging the
    > laptop. Sometimes pings get through with big delays but mostly they time
    > out. So we have a link that acts a bit like a diode - only works one way!
    >
    > The desktop NIC has a static address (192.168.1.2) with proper subnet
    > mask and correct DNS entries.
    >
    > Any bright ideas as to what I can do to track down the problem?
    >
    > TIA.

    is the desktop firewall off ?
    atec, Apr 16, 2005
    #2
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  3. Linw

    Linw Guest

    atec wrote:
    > Linw wrote:
    >
    >> This one has stumped me. I set up a client's network which worked fine
    >> at my address but two days later has a puzzling problem. Consists of a
    >> USRobotics 9106 wifi modem/router/switch, an XP desktop connected to
    >> the switch with ethernet cable, and an XP Laptop connecting via a wifi
    >> adaptor.
    >>
    >> Both can access the Internet. The laptop can access the desktop share
    >> and ping it with no problem. But the desktop has BIG trouble pinging
    >> the laptop. Sometimes pings get through with big delays but mostly
    >> they time out. So we have a link that acts a bit like a diode - only
    >> works one way!
    >>
    >> The desktop NIC has a static address (192.168.1.2) with proper subnet
    >> mask and correct DNS entries.
    >>
    >> Any bright ideas as to what I can do to track down the problem?
    >>
    >> TIA.

    >
    > is the desktop firewall off ?

    No. I use ZA on both and both links worked fine when they left my place.
    There is a trusted zone setup covering the LAN static IP address range.
    Linw, Apr 17, 2005
    #3
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