Re: RedHat desktop session on OSX X11 possible?
Re: RedHat desktop session on OSX X11 possible?
On Fri, Apr 04, 2003 at 07:43:20PM -0500, Jesse Stockall wrote:
> On Friday, April 4, 2003, at 07:29 PM, Joe DeCosta wrote:
>
> >Apple's X11 by default has security on....
> >
> >so when sshing out to the redhat machine, arent you going to tell
> >apple's X11 server to let redhat use it??
>
> You only need to use xhost if you want to use the insecure 'xauth'
> method.
Sorry, that's just not correct. :-) xhost does *not* use xauth to
authenticate; it simply uses the host name to authenticate the
connection.
xauth is the local X server's other form authentication, and ssh uses it
to authenticate its X connections. ssh gaines you two further
advantages:
1) It encrypts the traffic, so that it can't be snooped
2) It passes the xauth authentication cookie for you. In the old days
you had to do this yourself.
Try tunnelling X with ssh to a machine that doesn't have he xauth
program - you'll find it doesn't work.
Tim
--
Dr Tim Cutts
Informatics Systems Group
Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1SA, UK
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