Managing Port Forwarding

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The terminology used in port forwarding is reversed from that used in setting up an SSH session. Specifically:

  • Use the SSH command on host VMSHOST1 to set up an X11 port forward to the SSH server on VMSHOST2.

  • Run the X11 client on host VMSHOST2 for display by the X11 server on host VMSHOST1.

The following configuration parameters allow you to control port forwarding:

  • ForwardX11, specified in the client configuration file, controls whether the SSH client performs port forwarding. This is set to yes by default.

  • AllowX11Forwarding, specified in the server configuration file, controls whether the SSH server allows port forwarding. This is set to yes by default.

  • xauthpath, specified in the client configuration file, specifies the location of the Xauthentication executable file.

For more information about these configuration parameters, see Appendix B.