[CentOS] [OT] DHCP auth&auth software

[Chan Chung Hang Christopher]

Marko Vojinovic wrote:
> Does anyone know about some free (as in beer, and maybe as in speech) software 
> which would implement authentication and authorization of a user prior to 
> issuing a valid dhcp lease?
>
> I imagine the following scenario: someone walks into my office building with a 
> laptop (a colleague, a visitor, a guest, whoever), and hooks up onto the local 
> net (wired or wireless). The server detects an unknown MAC address, issues a 
> bogus dhcp lease which resolves all dns queries to a single internal web page 
> with a form the user is supposed to fill in and send. After he does so, an 
> administrator does a sanity check of the data the user provided, and grants or 
> denies access. If access is granted, the user gets a new, unrestricted dhcp 
> lease, which provides him with a normal access to local network.
>   

What about 802.11x authentication? If they are authenticated, they are 
assigned to the 'internal' vlan and if not, an alert or something else 
is triggered?