Typically, in a public wi-fi accessible establishment, you connect without having to enter a key to access the network's wireless internet. Then, no matter what website you try to access, it redirects you to their page first, informing you of the rules and guidelines of using their wireless internet network, and you must either check a box indicating you have read and understood the rules, or, sign in using a username and password granted to you already (like at a hotel).
Is this possible to do on a home router (such as a Linksys or Netgear)? If so, how? Is this done on the router itself or a server somewhere? Something else?