Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!cs.utexas.edu!usc!snorkelwacker!bloom-beacon!EXPO.LCS.MIT.EDU!keith
From: keith@EXPO.LCS.MIT.EDU (Keith Packard)
Newsgroups: comp.windows.x
Subject: Re: Help with Xauthority and Visual X-19's
Message-ID: <9004111646.AA12480@xenon.lcs.mit.edu>
Date: 11 Apr 90 16:46:08 GMT
References: <9509@mentor.cc.purdue.edu>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 20


> I thought that if I ran xdm on the Visual X-19's then I could use
> xauthority.  Unfortunately this isn't working because xdm thinks the
> Visual X-19's are not secure.

The only way xdm can transmit that information to a remote terminal is via
XDMCP; Visual does not support XDMCP (yet), making it impossible to negotiate
authorization.

But, xdm can only use an authorization scheme if the terminal supports it.  For
example, I've been testing a NCD-16 which does support XDMCP, and yet still has
no authorization support; XDMCP doesn't guarantee authorization, it only
provides the mechanism for setting things up.

If you could use even the essentially-insecure MIT-MAGIC-COOKIE-1 authorization,
I suggest you call Visual and see if they're planning on supporting it when
they come out with XDMCP support.

Keith Packard
MIT X Consortium