My Galaxy S4 i9505 is on Android 4.3 stock rooted.
I would like to know if iptables is working before updating to android 4.4.2 stock.
Can someone do this test on his Galaxy on 4.4.2 stock rooted ?
Install Android Terminal Emulator and enable access point in network settings
In terminal :
su iptables -t nat -A PREROUTING -p tcp --dport 80 -j DNAT --to-destination 192.168.43.1:8980
And tell me if there is an error message like "getprotobyname is not implemented on Android" (if nothing is displayed it's ok)