I'm currently trying to setup a walled garden for a intranet. There will be no internet access, so authenticating will not be needed. Google for a couple of months and found a million ways to do this wrong. I've been racking my brains out on how to put all the pieces of this puzzle together. Here is my current setup. I have a pc running an Ubuntu based linux system. This system has an Apache server,php server,ssh server and mysql server. Also have a Bind9-host running on it. My wireless router is an old Linksys BEFW11S4 so flashing the firmware is out. What would the proper setup for this kind of captive portal be? (side note: The router needs to be setup with DHCP.) Thanks for taking the time to read this, and as always your suggestions and help is greatly appreciated.

Just setup a BIND9 server and currently working out the kinks. I'm thinking that could be the best way to funnel all tcp/udp traffic to my internal webserver. I have my Linksys setup on an odd subnet 192.168.2.1 and the system where BIND9 and the webserver is running on 192.168.1.100 I figure that if my main system connects first I can insure that it always get 192.168.1.100 and still be able to use DHCP. Just to be clear, all servers are running on one system.