Is it possible to share an Ethernet connection to a secure wireless network in OS X on a MacBook Pro? I can share my Ethernet Internet connection to WiFi clients using System Preferences, but I'm wondering if/how I can make that network secure (WPA) and not broadcast the network name?
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System Preferences -> Sharing ->  Internet Sharing - Share your connection from ethernet -> to computers using Wifi -> Wifi Options -> Security WEP 128 Bit

This thread is the same as
How to share internet with WPA/WPA2 security?