Svein Halvor Halvorsen wrote:
An alternative to the inserted text in all http traffic (and probably easier to implement) is just to divert all unknown traffic to an internal ip-adress (using the firewall), and setup a web page on that address. Then have people click some button, which will rewrite the fw rules for that specific machine (white list).
I set something similar on my roommate's wireless network, and routinely use it on another server to inform banned users that they are. It's easy to set up for either a whitelist or a blacklist. It utilizes FreeBSD's IPFW, but is trivial to implement in PF as well.
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