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- From: doherty@msc.edu (David C. Doherty)
- Newsgroups: comp.sys.mac.comm,comp.protocols.kerberos
- Subject: Re: MacX and kerberos...
- Message-ID: <1992Jul30.155453.3096@uc.msc.edu>
- Date: 30 Jul 92 15:54:53 GMT
- References: <1992Jul30.142315.9840@ncsu.edu>
- Sender: doherty@uh.msc.edu (David C. Doherty)
- Reply-To: doherty@msc.edu
- Organization: Minnesota Supercomputer Center
- Lines: 35
-
- In article <1992Jul30.142315.9840@ncsu.edu>, everette@ncsuvm.cc.ncsu.edu (Everette Allen) writes:
- |> 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?
-
- As I understand things, yes this is true. Perhaps worse yet is that
- (I'm guessing ) most people run MacX with access control turned OFF.
- So, they can easily be snooped.
-
- |> none of the ease :). Any help that I can get would be great. EVerette
-
- I posted something similar to this in comp.sys.mac.apps a few weeks ago.
- Response: Nada. Actually, I was wondering if future releases would
- be able to handle Magic Cookies or at least xhost support.
-
- I know that some of the MacX developers (used to?) read these groups,
- and I would sure be really grateful if they'd give us some hints about
- where they are going with MacX viz. security issues.
-
- This stuff is really important. Is anyone from Apple listening?
-
- Thanks,
-
- David C. Doherty
- Minnesota Supercomputer Center
- doherty@msc.edu
-