Networking but no internet?

By light_bulb
Feb 27, 2008
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  1. i have a laptop and a desktop that are connected for networking through a crossover cable. i have 2 lan ports for the desktop and a lan + wlan for laptop. they each have their individual internet connection but when i connect them together with the crossover cable for networking, both the laptop and desktop no longer have internet although network connections shows its still connected to the net. i dont noe wat the problem is here.
  2. jobeard

    jobeard TS Ambassador Posts: 13,040   +223

    sounds like BOTH systems have the same IP address.

    there are 4 triplets in an address xxx.yyy.zzz.nnn
    both systems must share the same xxx.yyy.zzz
    each system must have a unique nnn
    nnn should not be 0,1, or 255
  3. kimsland

    kimsland Ex-TechSpotter Posts: 18,353

    Start --> Run --> Netsetup
    Create a floppy at the end, run on the other.

    You can also attach your Ipconfig to a new message: (Sorry no you can't, you need more posts to allow attach)

    Start --> Run--> cmd /c ipconfig /all >Desktop\ipconfig.txt" <OK>

    Edit:
    Also congratulations this is topic100000 at TechSpot
    .
    http://www.techspot.com/vb/showthread.php?t=100000
    .
  4. rf6647

    rf6647 TechSpot Maniac Posts: 931

    How about an experiment?

    For one of the computers, disable the connection to the internet. Make the connection between computers.

    Observe results. Access Internet from browser for each computer.
    Use the ipconfig /all command to monitor the responses on each computer.

    Internet Connection Sharing is beyond my comprehension. But this experiment may give direction.

    Check the events logs for possible reports. I would have guessed one of the computers would have become the 'master' rather than both disconnecting.

    Logs & status tables in the router may give another view.

    WoW! I have touched a memorable event.

    [edit]
    Picking up on Jobeard's theme. For the connections between each computer, make the ip's static and their own private network. In first computer use
    192.168.200.200 ; in the second computer use 192.168.200.202. Both assignments were arbitrary. DCHP should be off for this connection.
    [/edit]
    [experiment results] Windows XP
    Crossover cable permits file & printer sharing. Internet traffic not supported between machines on the crossover.

    Either computer and both computers can establish network connections.

    ZoneAlarm on each computer shutdown the router interface (forced home networking onto the crossover cable).

    I could not establish a functioning Internet Connection Share between computers.
    [/experiment results]
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