How To
Summary
Basic steps to forward an X11 client through a Jump host back to a PC with an X Emulator
Environment
ASSUMPTIONS:
This document uses the following names for the systems:
remoteDisplay: This is the PC or Desktop where an Xserver is running
jumpHost: The AIX System used to connect through the firewall to 'aixClient'
aixClient: The AIX System where the X11 clients run, to display to 'remoteDisplay'
2) The following is enabled in /etc/ssh/sshd_config on 'jumpHost' and aixClient':
X11Forwarding yes Default is no
X11UseLocalhost yes Default is yes - If you modify this setting, the following instructions must be modified and tested to reflect that configuration.
Steps
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On 'remoteDisplay'
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1) Start the Xserver (e.g. Xming, Cygwin, etc).
2) Invoke the PC terminal (For example, PuTTY) connection to 'jumpHost' with SSH X11 forwarding enabled.
Note - The command-line equivalent is: ssh -X user@ 'jumpHost'
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In NEW SSH session on 'jumpHost'
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3) Confirm SSH X11 forwarding was enabled.
| % echo $DISPLAY |
This command should return 'localhost:n'
4) Initiate a new forwarded ssh session with 'aixClient'.
| % ssh -Y user@'aixClient' |
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In NEW SSH session on 'aixClient'
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5) Confirm SSH X11 forwarding was enabled.
| % echo $DISPLAY |
This command should return 'localhost:n'
6) Invoke an X11 client.
| % xclock |
This command displays the xclock on the PC Xserver display, from:
'aixClient'--> to 'jumpHost' --> to 'remoteDisplay'
Additional Information
| SUPPORT |
|---|
|
If you require more assistance, use the following step-by-step instructions to contact IBM to open a case for software with an active and valid support contract. 1. Document (or collect screen captures of) all symptoms, errors, and messages related to your issue. 2. Capture any logs or data relevant to the situation. 3. Contact IBM to open a case: -For electronic support, see the IBM Support Community: 4. Provide a clear, concise description of the issue. - For guidance, see: Working with IBM AIX Support: Describing the problem. 5. If the system is accessible, collect a system snap, and upload all of the details and data for your case. - For guidance, see: Working with IBM AIX Support: Collecting snap data |
Related Information
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Document Information
Modified date:
16 July 2021
UID
ibm10719873