My Windows XP (SP2) laptop connects to a wireless network, and I would like another laptop to connect to the internet through Internet Connection Sharing in Windows XP.
In the XP laptop's wireless network connection property, under advanced tab, I selected "allow other network users to connect through this computer's internet connection". Then there is an error: "Internet Connection Sharing cannot be enabled. A LAN connection is already configured with the IP address that is required for automatic IP addressing."
I googled a little, and someone said:
ICS wants to assign 192.168.0.1 to the
LAN connection. It can't do that,
because the wireless network is
already using the 192.168.0.x IP
address range. The Internet connection
and the LAN must use different ranges.To use ICS, change the wireless
network to a different address range,
such as 192.168.1.x.
If this is the solution, I wonder how to "change the wireless network to a different address range,
such as 192.168.1.x."? Does it mean that I have configure the router or modem of the wireless network? How to do that without having access to the router or modem physically? I also don't have password to configure that router.
If this is not the solution or there may be other possibilities, for example without configuring the router of the current wireless network, please let me know as well. By the way, I have another router available if that may help.
Thanks and regards!
Best Answer
Call your service provider for the router's password and for support changing your DHCP range. If they won't support you, ask for the default settings needed for your connection and write them all down.
Then do an Internet search for your router's default password. If you still can't get in using the default and you have no other way of recovering the existing admin passoword, search for instructions for resetting your router to factory default. After the reset, the default password will work and at that point you will be able to reconfigure it from scratch, using a 192.168.1.x range for DHCP.
Good luck!