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Hi Corinna, I have tested the cygwin-inst-20060130.tar.bz2 snapshot. Unfortunately, this snapshot runs the same way as release 1.5.19-4. Cygwin does however behave differently on Windows 2000 Server than on Windows 2003 Server. The following describes the behavior of Cygwin (release or snapshot) running on Windows 2000 Server sp 4. The SSH local port forwarding is activated with the command line statement: ssh -L2001:server.com:23 server.com. If another program is executed that also listens on port 2001, the program immediately throws the bind error exception: Address already in use. Cygwin (release or snapshot) running on Windows 2003 Server sp 1 however does not throw a bind exception. (If two copies of a port listening program are executed and listen on the same port, the second copy will always throw a bind exception on either operating system). Ideally, I would like Cygwin to exclusively bind the port forwarding listening port. This would prevent the potential hijacking of plain text data. Jon
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