> I don't believe it's possible to have a user log in to get an IP. It is possible, in hotels that have broadband in rooms, and on some university campuses I've been too they have a DHCP server setup to serve addresses from a private block. On that network there is a webserver setup to intercept any http request coming from a client in the private block and redirect the user to a page where he/she has to login. On login a cgi (or some such) makes a change in the DHCP database to allocate the user a "real" IP. The user gets instructions on the ensuing webpage to do a release/renew and boom they are setup.
Sorry, I don't know of any opensource packages to do this, but it shouldn't be too hard. Of course, unless you setup your routers to block packets based on MAC address this won't prevent someone from "guessing" a valid IP and setting it up static. -- C. R. Oldham Director of Technology NCA CASI
