My question was:
 We have in the past some discussions about a solution to allow only
 root login in a server, while running NIS.
 The only solution was every time, to disable NIS for passwd in
 /etc/nsswitch.conf (something like this:    passwd:     files   ).
 This has some disadvantages (we can only see the UIDs, problems
 with samba and so on  ...).
 Well, now i get a hint, that Solaris 2.5.1 is delivered with PAM.
 (I know, Solaris 2.6 has also PAM and it has some docs).
 Solaris 2.5.1 has no docs for PAM, i think.
 My question now is:
 Is there any PAM configuration for Solaris 2.5.1 to allow only root login
 to the host while running NIS?
 Which PAM module uses only /etc/passwd for authentification?
Well, old question - old solution:
 I change passwd in nsswitch.conf to:
   passwd: compat
 And i add a line to /etc/passwd:
   +:*:::::
 Running pwconv and it works now.
I get no hints for a PAM solution.
I don't know my mistake in former times. I tried it nearly in the
same way  ... :-} . But i think, it is very important to use only the 
passwd-line for NIS. For NIS+ is a second line passwd_compat necessary.
Thanx to:
Mike Blandford <mikey@NMSU.Edu>
"Mark A. Baldwin" <mark.baldwin@aur.alcatel.com>
Job Bogan <job@piquin.uchicago.edu>
Casper Dik <casper@holland.Sun.COM>
Mike Blandford <mikey@nmsu.edu>
Arthur Darren Dunham <add@netcom.com>
Chris Liljenstolpe <cds@io.com>
rbgabriel@amoco.com (Roland B. Gabriel)
Detlev
-- Detlev | Institut fuer Mikroelektronische Systeme, Uni Hannover Habicht | D-30167 Hannover +49 511 7624992 habicht@ims.uni-hannover.de --------+-------- Handy +49 172 5415752 ---------------------------