Desktop can ping laptop but laptop can't ping desktop

Discussion in 'Windows Networking' started by Al, Dec 12, 2003.

  1. Al

    Al Guest

    This one is driving me crazy. I have two computers (a desktop and a laptop)
    which share a cable modem connection via a Linksys router. The router is
    connected to the cable modem with ethernet cable. The desktop is connected
    to the router with ethernet cable, and the laptop is connected to the router
    with 802.11b Wi-Fi. The router is configured on the LAN side as
    192.168.1.1, and gets the WAN IP address from the cable system. The router
    runs DHCP to assign LAN IP addresses to each computer. The desktop is
    192.168.1.100, and the laptop is 192.168.1.101. Both computers can access
    the Internet flawlessly. The problem is, I can't get the computers to share
    data with each other. Both computers are WinXP Home, and are in the same
    workgroup. I don't think the problem is NetBIOS, I think there's some sort
    of route table involved. Here's why: I can ping the router from the
    desktop; I can ping the laptop from the desktop; I can ping the router from
    the laptop; but I CAN NOT ping the desktop from the laptop.
     
    Al, Dec 12, 2003
    #1
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  2. Hi
    Routing table would seem strange, because dhcp gives address and subnet
    and default gateway. Could it be the desktop has the WinXP Internet
    firewall activated?

    Gabrie
     
    Gabrie van Zanten, Dec 12, 2003
    #2
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  3. Al

    Al Guest

    Hi
    I just double checked, I don't have the WinXP firewall activated. With the
    router and with ZoneAlarm on both the desktop and the laptop, I think I'm
    safe to run without it.

    Al
     
    Al, Dec 13, 2003
    #3
  4. Al

    daytripper Guest

    So try shutting off ZoneAlarm long enough to prove it's not the reason you're
    ping requests are being ignored....
     
    daytripper, Dec 13, 2003
    #4
  5. Al

    Al Guest

    So try shutting off ZoneAlarm long enough to prove it's not the reason
    you're
    Daytripper,

    I shut off ZA on the desktop machine and was able to ping the desktop from
    the laptop. I guess I have to define the laptop to ZA as a trusted
    computer. I'm not quite sure how to do that. I guess I have some research
    to do.
     
    Al, Dec 14, 2003
    #5
  6. Al

    daytripper Guest

    Yup. I'd help but I've never used ZA...

    /daytripper
     
    daytripper, Dec 15, 2003
    #6
  7. Tis easy.

    Open the ZA panel, Select <Firewall>, then <zones>,click on < ADD>,
    (You can then use either the host/site name, or select the IP of the
    laptop.)

    Roger Halstead (K8RI & ARRL life member)
    (N833R, S# CD-2 Worlds oldest Debonair?)
    www.rogerhalstead.com
    Return address modified due to dumb virus checkers
     
    Roger Halstead, Dec 15, 2003
    #7
  8. Al

    Al Guest

    Thanks. All is working fine now. In fact the laptop is configured as
    a mirror image of the desktop in ZA, which explains why I could go the
    other way. I don't remember doing that; I guess my memory is going...
     
    Al, Dec 15, 2003
    #8
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