Can I set up a website on a wifi router? [duplicate]

Solution 1:

What you're looking for is called a captive portal. Many higher-end WiFi devices that you'd see in internet cafes or airports have this built in.

There are also open-source implementations of captive portal access control software, such as Coova and WiFiDog.

Solution 2:

Generally speaking these are found on enterprise level wireless gear. I have attached a picture of what mine looks like if we were to implement such a thing. From this page we can change the Eula, how long guests have access, generate codes, push software to get them connected without admin interaction, change logo's, restrict access to certain subnets, and pretty much setup our own login interface. You may be able to do this with something like DD-WRT, but I'm not sure and have never used it.