Xenix Dialup Security

[Peter Jeremy]

The LOGIN(M) page for Xenix/286 states:

  "At some installations, an option may be invoked that will require you
  to enter a second `external' password.  This will occur only for dialup
  connections, and you will be prompted by the message `External security:'.
  Both passwords are required for a successful login."

I would like to invoke this option.  Unfortunately, the quoted paragraph is
the only reference that I have been able to find discussing this.  Studying
the output of `strings /etc/login` hasn't helped (except that the string
"External security" doesn't occur).  The SysV approach (using /etc/dialups
and /etc/d_passwd as documented in <228 at pyuxt.UUCP> (15-Dec-84)) doesn't
appear to work (and I can't see any references to the files /etc/dialups or
/etc/d_passwd in init, getty or login anyway).

Is this actually implemented in Xenix?  Does anyone know how to set this up?
-- 
Peter Jeremy (VK2PJ)         peter at stca77.stc.oz
Alcatel-STC Australia        ...!uunet!stca77.stc.oz!peter
41 Mandible St               peter%stca77.stc.oz at uunet.UU.NET
ALEXANDRIA  NSW  2015