What is the procedure to set up a wifi router so that it does the following only.
1 the router is not connected to the net
2 the router redirects all web page requests to a server hosted on the local network. Aka the local ip address.
Using a couple high gain antennas, my idea is to be able to enable people to connect via an open wifi network with their smart phone and the browser will automatically go to a local site hosted on a cheap raspberry pi or old desktop computer running a server.
This would be used mainly to stream video, enable chat with other users on the network and exchange files, view we pages etc.
A private intranet that would have a range of maybe a mile or 2 using one or a series of routers with a wave glide antenna pointed in the directions coverage is wanted.