networking - iptables in android

Question

Are IPtables inbuilt in android kernel? If they are, how to use them in our android application?

Answer 1

1. iptables is available in Android source distribution. That version however only works with devices built with Linux kernel 2.6.29.
2. Users of retail Android devices cannot access iptables binary. Even Android OS itself cannot access that binary. This is hard-coded in Android. Many devices also don't have iptables at all.
3. The only way to access iptables binary is to build your own Android images. Check out http://randomizedsort.blogspot.com/2010/08/building-android-and-linux-kernel-for.html. Once you get comfortable with that process, check out http://randomizedsort.blogspot.com/2011/03/porting-iptables-1410-to-android.html.