DHCP Authentication howto ?

Frank Bulk frnkblk at iname.com
Tue Sep 4 03:02:27 UTC 2007

I would have to posit that since Layer 1 is physical, 802.1X would be at
Layer 2 in the OSI model.


From: dhcp-users-bounce at isc.org [mailto:dhcp-users-bounce at isc.org] On Behalf
Of ip guy
Sent: Monday, September 03, 2007 7:26 PM
To: dhcp-users at isc.org
Subject: Re: DHCP Authentication howto ?

802.1x would be a layer 1 issue, managing a school on a University campus,
that simply isn't an option at this point.

On 8/31/07, Tim Peiffer <peiffer at umn.edu> wrote: 

ip guy wrote: 
> Hi all
> Can anyone point me to a DHCP Authentication howto ?
> Were running ICS DHCP allocating IP's to windows hosts so am hopeing it's
> possible to do what i'm after
> regards
Just say no.  Neither an IP address nor a MAC address are a credential,
so no there isn't a way to authenticate with DHCP.

Leave the job of providing IP addresses to DHCP, leave authentication to 
things like radius.  Leave network admission control to 802.1x.

Tim Peiffer
Network Support Engineer
Networking and Telecommunications Services
University of Minnesota/Northern Lights GigaPOP 

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