netreg Revisited
John Hascall
john at iastate.edu
Tue Mar 22 18:02:52 UTC 2011
Our specific-to-ISU version of netreg uses omapi
to do host adding. There are some tricky bits
though:
1) we had to modify dhcpd to NOT add the entry
to the leases file (since we are adding it
to the config file and duplicates are bad).
2) We use class/subclasses to separate clients
to verious service categories (different
subnets on the "same wire"). We have been
thus far unable to make omapi for for adding
subclasses :( :( :(
John
> Some years ago, Carnegie Mellon University built a
> clever use of dhcp and DNS called netreg to authenticate clients
> who wanted to connect to their networks. It looks like nobody
> has done much to it since about 2005 and there is no mention of
> failover or omapi. All updates are done the old fashioned-way.
> Modify dhcpd.conf. Stop the server. Say a prayer and restart
> dhcpd.
>
> We've been asked to investigate netreg so I am asking
> whether there is a modernized version that exists and makes use
> of omapi for dynamic updates.
>
> The original idea was that each network had a small pool
> of dynamic leases with very short lifetimes. A client is sent to
> the authentication server and, if approved, he gets put in to
> the known pool. By using omapi, he could also be given a bootP
> entry if the magic between authentication and approval can do
> that.
> We are basically looking to make sure we don't re-envent
> any good wheels that have already been proven to roll.
>
> Thanks for all constructive ideas.
>
> Martin McCormick WB5AGZ Stillwater, OK
> Systems Engineer
> OSU Information Technology Department Telecommunications Services Group
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