Auto Authentication

["Tim Johnston" <tjston bigpond com>]

I have ethernet terminals telneting over a LAN to a linux host. What I would
like is for the connecting terminal to be logged in automatically as a
particular user according to the IP or MAC that they are connecting from.

I had thought that this would be a common requirement, and that there would
be a ready-bottled solution available, but if there is, I haven't managed to
find it.

Anyone out there able to assist with this ?

Regards,   Tim Johnston