Don’t have an unlimited data plan and worried about your data usage on your Android phone? Well, XDA Member rodrigo.zr has created an IPtables based firewall for Android devices. The app makes it easy to control which apps have access to network resources, so you can make sure not to go over your monthly cap. As a side note, to use this app you must be using a rooted Android device with Super User capabilities. Some of the features that it has are:
Some of the features specified down the road are 4G/WiMax Data Control and a logging feature.