DHCP Authentication method?

[Hetz Ben Hamo]

Hi,
I'm looking to test a very simple DHCP authentication, to allow a user to
get a dynamic IP.
In order to authenticate the user, the user will need to type a number which
will be compared to a number stored in a flat text file. If he will write
the correct number, he'll get a full web access. If not, "wrong number". the
authentication won't let the user do any ssh to the machine, just web
browsing.

I thought doing it with PAM, iptables and NoCatAuth, but it seems that
NoCatAuth is outdated (it doesn't have any updates since 2004).

Does anyone has any recommendation for any way to use it? I don't want to
use MySQL, LDAP - it's an overkill solution for something that should be
simple..

Thanks,
Hetz
-- 
my blog (hebrew): http://benhamo.org
Skype: heunique
MSN: hetz-blog at benhamo.org
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