Classifying clients based on FQDN in option 81
Niall O'Reilly
niall.oreilly at ucd.ie
Wed Feb 27 09:50:56 UTC 2013
On 27 Feb 2013, at 02:24, VithalPrasad Gaitonde wrote:
> Can one configure the ISC DHCP server to define class(es) of clients
> based on the DNS domain sent in option 81 by the client.
I haven't tried that, but I'ld be surprised if it couldn't be done;
the man pages for dhcpd.conf and dhcp-eval seem to contain the
information you need.
That said, I would ask two more basic questions:
1. Can one depend on the client to set option 81?
2. Can one trust the client not to spoof a "more attractive" DNS
domain name than the "legitimate" one?
Good luck!
> Can you then use this class to set options and specific IP range for such a class of clients.
Surely.
IHTH
Niall O'Reilly
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