File server security

[Paul Davey]

In article <9926 at batcomputer.tn.cornell.edu> 
rogerj at tcgould.tn.cornell.edu (Roger Jagoda) writes:
> 
>Is there a way to limit rlogin, telnet, ftp access to just
>a few users (the net administrators). ...

Set up a netgroup named say "admin" under yp with your 
administrators listed as a set of users, leave the domain 
and machine fields empty (wild).

In your server passwd files use + at admin instead of + to 
include just the members of the admin group.

The only problem I have found with this is that the yp master 
passwd file is usually on a server...



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