Re: SSH & xauth

From: Theo de Raadt (deraadtat_private)
Date: Sun Feb 27 2000 - 19:01:41 PST

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    > > All children of the SSH connection are able to tunnel X11 sessions
    > > through the X tunnel to the client X11 session.  This is
    > > accomplished by running xauth upon logging in.
    >
    > I'm really suprised this is still the default.  I've heard mention of
    > this at least 4 years ago, and have seen trojaned SSH servers around
    > _since then_ that do logging of client X11 keystrokes - probably the
    > best place to accomplish this.  The problem seems to be that the
    > authors have not figured out that this isn't a good default, perhaps
    > for convenience's sake.  This suprises me, since people DO know about
    > this.  I think the argument is really convenience vs. security (well,
    > thats always the argument isn't it?).
    >
    > alias ssh="ssh -x"
    
    Earlier, bugtraq was told that all ssh versions including openssh
    automatically tunnel X.
    
    This is not correct.  openssh has that turned off by default.
    



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