In this tutorial we will see how to enable internet sharing via WiFi on Mac OS X Lion. Let us say you have an internet USB stick connected to your Mac Book Pro with Lion OS. Now if you want to share this internet connection with your iPad over WiFi then you can do the following.
Click the Apple icon on your Mac Book Pro and select System Preferences from the menu list.
In the System Preferences window, click Sharing option under Internet & Wireless
In the Sharing Preferences window, navigate to Internet Sharing in the services list and make sure mark the check box with label as Wi-Fi for “To computers using“. Then mark Internet Sharing check box to start sharing your Internet.
If you want to secure your internet sharing then click Wi-Fi Options button and in the Configure an internet-sharing network window, select Security as 128-bit WEP. This would provide the option to password protect the shared internet connection.
Now when you do WiFi search on your iPad, the shared internet connection should be available in the name of the shared computer.