Standard troubleshooting tips:
- make sure the main laptop address is correct. The one you are typing is not (too many 0)
*** if using windows, use ipconfig to confirm the address of the main laptop. The address detection can sometimes be misled.
- plug the main laptop with a wire to the router if you can, and use the address shown for the wired ethernet connection
- if the main laptop is windows, it should respond to the ping command. so if your address is 10.0.0.67, the other laptops should
be able to do ping 10.0.0.67 without a timeout