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Date:      Wed, 18 Mar 1998 02:10:25 +0100
From:      Palle Girgensohn <girgen@partitur.se>
To:        questions@FreeBSD.ORG
Subject:   Re: Kerberos basic questions
Message-ID:  <350F1F01.11EDF46D@partitur.se>
References:  <3.0.1.32.19980318000926.007bb7b0@posta.cisco.it>

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Hello Antonio,

Not sure if this helps, but anyway:

Antonio Nati wrote:
> 
> I'm trying to figure how to use kerberos in my environment.
> 
> I have three WEB servers and a PPP server (all with FreeBSD 2.1.5), and I
> would like to have only one authentication service for all the boxes.
> 
> As far as I'm seeing in my first 2.2.5 installation, kerberos doesn't
> manage at all all the supplemental information (uid, gid, home, etc) that
> are essential to define an user.
> 
> So I imagine that I should anyway create new users with adduser on any
> system where they should work, adding them later to the kerberos database
> and using kerberos only to assure them fast logins on the various systems.
> Is that right?
> 
> Other three questions.
> 
> 1) Is there any kerberos mechanism in the last versions of apache?

Check http://andrew2.andrew.cmu.edu/minotaur/ . Carnegie-Mellon has a
Kerberos plugin for Netscape & MSIE. 

Not sure about Apache, but it can be done by a handy C programmer. You
need to know the inner secrets of how to get the tickets from the
plug-in... I guess it won't be easy. :(

> 
> 2) Is the usage of Kerberos completely transparent or the programs must be
> modified in order to use it? The LOGIN options of the pppd server is going
> to check the kerberos database or it simply checks against the passwd file?
> 

All programs must be kerberized. Don't know if this has been done to the
pppd. Besides, you probably can't use kerberos to authenticate ppp users
since it requires a UDP connection (you should be able to use the
Kerberos database, however. However, I'm no expert at the subject. Used
Kerberos as a user a couple of years ago.

> 3) Given the fact that I have a small amount of POP users already working,
> how to populate the kerberos database starting from the existing passwd
> file (and passing from MD5 to DES)?
> 

If all you have are ppp users using pop, there's no real need for
Kerberos; the passwords don't travel the net? At least not more than
your ethernet segment. I'd save myself the trouble.

Regards,
Palle
/Palle

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