login from cygwin to Mac OS X using xterm problem

Question

• open cygwin shell
• run ssh -Y user@MACOSXSERVER
  • "No xauth data using fake authentication data for X11 forwarding" <-- Warning
  • login MACOSXSERVER OK
• set DISPLAY=CYGWINIP:0.0
• xterm &

And I get the following error

• Xlib: connection to "CYGWINIP:0.0" refused by server Xlib: No protocol specified

What went wrong?

Answer 1

You're rewriting the value of $DISPLAY as set by sshd. This is preventing X forwarding from working. Stop doing this.

Answer 2

running xhost + before run ssh solves this problem.