there is wi-fi network, without access to internet. I need to connect my phone with 3g internet on board to it, and use it as router, i.e. give access to some one host, that knows phone's ip.
I can not use avalable by default function of wi-fi hotspot, because no one should be able to discover the connection to WAN exists. At least, it's existence must be not so obvious for every one. I suppose, on some custom distributions, like cyanogen mod, iptables is avalable, that could solve my problem, but i use default firmaware: android 4.4 on highscreen zera.
I tried to google possible solution, but all I have found is advices to configure wi-fi hotspot