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- Xref: sparky comp.sys.mac.comm:7502 comp.protocols.kerberos:557
- Newsgroups: comp.sys.mac.comm,comp.protocols.kerberos
- Path: sparky!uunet!ferkel.ucsb.edu!taco!everette@ncsuvm.cc.ncsu.edu
- From: everette@ncsuvm.cc.ncsu.edu (Everette Allen)
- Subject: MacX and kerberos...
- Message-ID: <1992Jul30.142315.9840@ncsu.edu>
- Sender: news@ncsu.edu (USENET News System)
- Organization: NCSU Computing Center
- Date: Thu, 30 Jul 1992 14:23:15 GMT
- Lines: 25
-
- I need some help understanding the mechanics of the kerberos protocol as it
- relates to the MacX Xwindows server. As I understand it MacX is not able to
- querry Xdm as some other servers do. Instead, MacX users rsh to execute
- individual commands. So I can fire up MacX and issue a:
- /usr/local/X11/xterm -display "¿display" and I will get an xterm alone which
- lives and plays with my other mac windows. Enter Kerberos... on our system
- rsh is not kerberized so I get "login incorrect" because, I think, the rsh
- is not looking in the Hesiod database to verify my password. Is this correct?
- If so where is the ftp archive for kerberized rshd (and ftpd, telnetd etc for
- that matter) ?? Now the security issue. IF I understand, any time that a
- Xserver passes a password *not a ticket* over the net it is insecure from a
- standpoint of kerberos. Is this true? I have seen a kerberos init for the
- Mac which is used with Nuntius (a mail reader which speaks to the kerberized
- popd) and actually passes tickets like the mac was a kerberized unix box.
- Does anyone know if this is correct information?? I would like to be able to
- use MacX to allow me to login to machines in a kerberized realm just like I
- was a hardwired Xstation (all the memory but no brains :-). I am really not
- concerned that the password is clear text but if this could arranged...:-).
- What are the real issues here?? Can Mac and PC Xservers coexsist with
- kerberos in a fairly secure way (secure = clear text to clients on a *local*
- net. like down the hall to the closet :-) ?? My whole goal is to use MacX to
- login to a kerberized realm and get the twm or mwm or vue stuff in a rooted
- window or what ever I want. Telneting line mode and pointing the xdm or
- what ever back to my mac is unacceptable (all the same security issues with
- none of the ease :). Any help that I can get would be great. EVerette
-