HPC/Network Access/SSH Tunnel Setup and Use - Revision history

Stern: /* Config file contents */

2025-09-23T18:05:10Z

Config file contents

← Older revision		Revision as of 18:05, September 23, 2025
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	** Mac: Terminal.app		** Mac: Terminal.app
	** Windows: a Cygwin window.		** Windows: a Cygwin window.
	* Copy&paste the following text into your ~/.ssh/config file.		* Copy&paste the following text into your <code>~/.ssh/config</code> file.
	<!-- You can use the following command to create the file from scratch:		<!-- You can use the following command to create the file from scratch:
	cat > ~/.ssh/config		cat > ~/.ssh/config

Stern: /* Using an ssh config file */

2025-09-23T18:04:29Z

Using an ssh config file

← Older revision		Revision as of 18:04, September 23, 2025
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	AddKeysToAgent yes		AddKeysToAgent yes
	'''MACs hmac-sha2-512,hmac-sha2-256'''		'''MACs hmac-sha2-512,hmac-sha2-256'''
			'''RequiredRSASize 1024'''

	* '''Replace''' the string ''argonne_user_name'' with the name of your Argonne domain account.		* '''Replace''' the string ''argonne_user_name'' with the name of your Argonne domain account.

Stern: /* Using an ssh config file */

2025-07-09T20:40:04Z

Using an ssh config file

← Older revision		Revision as of 20:40, July 9, 2025
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	ForwardX11Trusted yes		ForwardX11Trusted yes
	AddKeysToAgent yes		AddKeysToAgent yes
			'''MACs hmac-sha2-512,hmac-sha2-256'''

	* '''Replace''' the string ''argonne_user_name'' with the name of your Argonne domain account.		* '''Replace''' the string ''argonne_user_name'' with the name of your Argonne domain account.
			* The <code>MACs</code> line is required on Windows 11 Subsystem for Linux (WSL).
	* Remove write permissions to the config file, its parent directory, and your home for anyone but you:		* Remove write permissions to the config file, its parent directory, and your home for anyone but you:
	<syntaxhighlight lang="bash">		<syntaxhighlight lang="bash">

Stern: /* Modify configuration file */

2025-04-23T15:12:47Z

Modify configuration file

← Older revision		Revision as of 15:12, April 23, 2025
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	==== Modify configuration file ====		==== Modify configuration file ====
	* Similar to the above, copy&paste the following text into your <code>~/.ssh/config</code> file:		* Similar to the above, copy&paste the following text into your <code>~/.ssh/config</code> file:
			<font color="grey">NoHostAuthenticationForLocalhost yes
	NoHostAuthenticationForLocalhost yes

	Host mega		Host mega
	Hostname mega.cnm.anl.gov		Hostname mega.cnm.anl.gov
	User ''argonne_user_name''		User ''argonne_user_name''
	LocalForward 33301 carbon:22		LocalForward 33301 carbon:22</font><strong>
	~~'''~~LocalForward 33305 clogin5:22~~'''~~		LocalForward 33305 clogin5:22
	~~'''~~LocalForward 33306 clogin6:22~~'''~~		LocalForward 33306 clogin6:22</strong><font color="grey">
	LocalForward 33380 carbonmgmt:80		LocalForward 33380 carbonmgmt:80

	Host carbon		Host carbon
	Port 33301		Port 33301</font>
			<strong>Host clogin5
	~~'''~~Host clogin5~~'''~~		Port 33305
	~~'''~~Port 33305~~'''~~		Host clogin6
			Port 33306</strong><font color="grey">
	~~'''~~Host clogin6~~'''~~
	~~'''~~Port 33306~~'''~~

	Host carbon clogin*		Host carbon clogin*
	~~Hostname localhost~~		…</font>
	~~User ''argonne_user_name''~~
	~~ForwardX11 yes~~
	~~ForwardX11Trusted yes~~
	~~AddKeysToAgent yes~~

	You can then connect to either {{host\|carbon}}, or specific host names {{host\|clogin5}} etc., as follows:		You can then connect to either {{host\|carbon}}, or specific host names {{host\|clogin5}} etc., as follows:
Line 125:		Line 117:
	<font color="darkgreen">ssh clogin5</font>		<font color="darkgreen">ssh clogin5</font>
	<font color="darkgreen">ssh clogin6</font>		<font color="darkgreen">ssh clogin6</font>
	<font color="darkgreen">scp …</font> # (to or from {{host\|clogin}})		<font color="darkgreen">scp …</font> <font color="grey"># (to or from {{host\|clogin}})</font>
	…		…

Stern: /* Advanced: Connecting to a specific login node */

2025-04-23T15:06:44Z

Advanced: Connecting to a specific login node

← Older revision		Revision as of 15:06, April 23, 2025
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	<font color="darkgreen">ssh carbon</font>		<font color="darkgreen">ssh carbon</font>

	=== Advanced: Connecting to a specific login node ===		=== Advanced: Connecting to a ''specific'' login node ===
	The configuration described above uses a generic host name {{host\|carbon}}, which at present will lead to one specific login node.		The configuration described above uses a generic host name {{host\|carbon}}, which at present will lead to one specific login node.
	However, you may want to connect to another node that you have used previously, such as to reconnect to a VNC sesssion.		However, you may want to connect to another node that you have used previously, such as to reconnect to a VNC sesssion.
	To do so, change your .ssh/config to forward additional ports and set up more specific <code>Host</code> aliases.		To do so, change your .ssh/config to forward additional ports and set up more specific <code>Host</code> aliases.

	==== ~~Prepare~~ configuration file ====		==== Modify configuration file ====
	* Similar to the above, copy&paste the following text into your <code>~/.ssh/config</code> file:		* Similar to the above, copy&paste the following text into your <code>~/.ssh/config</code> file:

Line 118:		Line 118:
	AddKeysToAgent yes		AddKeysToAgent yes

	~~<!--~~		You can then connect to either {{host\|carbon}}, or specific host names {{host\|clogin5}} etc., as follows:
	~~'''LocalForward 33307 clogin5:22'''~~
	~~'''LocalForward 33308 clogin6:22'''~~
	…

	~~'''Host clogin7'''~~
	~~'''Port 33307'''~~
	~~'''Host clogin8'''~~
	~~'''Port 33308'''~~

	You can connect to either {{host\|carbon}}, or specific host names {{host\|clogin5}} etc.
	~~-->~~
	~~==== Usage with configuration file ====~~
	~~With the configuration file in place~~, ~~connect~~ as follows:
	: 1. Run '''once''' in your desktop session:		: 1. Run '''once''' in your desktop session:
	<font color="darkred">ssh -v mega</font>		<font color="darkred">ssh -v mega</font>
	: 2. Run '''as often as needed''':		: 2. Run '''as often as needed''':
	<font color="darkgreen">ssh clogin</font>		<font color="darkgreen">ssh clogin</font>
			<font color="darkgreen">ssh clogin5</font>
			<font color="darkgreen">ssh clogin6</font>
	<font color="darkgreen">scp …</font> # (to or from {{host\|clogin}})		<font color="darkgreen">scp …</font> # (to or from {{host\|clogin}})
	…		…

Stern: /* Advanced: Connecting to a specific login node */

2025-04-23T15:04:37Z

Advanced: Connecting to a specific login node

← Older revision		Revision as of 15:04, April 23, 2025
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	To do so, change your .ssh/config to forward additional ports and set up more specific <code>Host</code> aliases.		To do so, change your .ssh/config to forward additional ports and set up more specific <code>Host</code> aliases.

	* Similar to the above, copy&paste the following text into your ~/.ssh/config file:		==== Prepare configuration file ====
			* Similar to the above, copy&paste the following text into your <code>~/.ssh/config</code> file:

	NoHostAuthenticationForLocalhost yes		NoHostAuthenticationForLocalhost yes
Line 127:		Line 128:
	'''Port 33308'''		'''Port 33308'''

	~~With this modified configuration file in place, you~~ can connect to either {{host\|carbon}}, or specific ~~login~~ host names ~~you configured~~.		You can connect to either {{host\|carbon}}, or specific host names {{host\|clogin5}} etc.
	-->		-->
			==== Usage with configuration file ====
			With the configuration file in place, connect as follows:
	: 1. Run '''once''' in your desktop session:		: 1. Run '''once''' in your desktop session:
	<font color="darkred">ssh -v mega</font>		<font color="darkred">ssh -v mega</font>

Stern: /* Advanced: Connecting to a specific login node */

2025-04-23T15:02:39Z

Advanced: Connecting to a specific login node

← Older revision		Revision as of 15:02, April 23, 2025
Line 118:		Line 118:

	<!--		<!--
	'''LocalForward 33307 ~~clogin7~~:22'''		'''LocalForward 33307 clogin5:22'''
	'''LocalForward 33308 ~~clogin8~~:22'''		'''LocalForward 33308 clogin6:22'''
	…		…

Line 126:		Line 126:
	'''Host clogin8'''		'''Host clogin8'''
	'''Port 33308'''		'''Port 33308'''

			With this modified configuration file in place, you can connect to either {{host\|carbon}}, or specific login host names you configured.
	-->		-->
	~~With this modified configuration file in place, you can connect to either {{host\|"carbon"}}, or specific login host names you configured.~~		: 1. Run '''once''' in your desktop session:
	: 1. Run once in your desktop session:
	<font color="darkred">ssh -v mega</font>		<font color="darkred">ssh -v mega</font>
	: 2. Run as often as needed~~, any one of these commands~~:		: 2. Run '''as often as needed''':
	<font color="darkgreen">ssh ~~clogin5~~</font>		<font color="darkgreen">ssh clogin</font>
	<font color="darkgreen">~~ssh clogin6~~</font>		<font color="darkgreen">scp …</font> # (to or from {{host\|clogin}})
	…		…

Stern: /* Advanced: Connecting to a specific login node */

2025-04-23T15:00:07Z

Advanced: Connecting to a specific login node

← Older revision		Revision as of 15:00, April 23, 2025
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	To do so, change your .ssh/config to forward additional ports and set up more specific <code>Host</code> aliases.		To do so, change your .ssh/config to forward additional ports and set up more specific <code>Host</code> aliases.

	* Similar to the above, copy&paste the following text into your ~/.ssh/config file.		* Similar to the above, copy&paste the following text into your ~/.ssh/config file:

	NoHostAuthenticationForLocalhost yes		NoHostAuthenticationForLocalhost yes
Line 116:		Line 116:
	ForwardX11Trusted yes		ForwardX11Trusted yes
	AddKeysToAgent yes		AddKeysToAgent yes

	<!--		<!--
	'''LocalForward 33307 clogin7:22'''		'''LocalForward 33307 clogin7:22'''
Line 126:		Line 127:
	'''Port 33308'''		'''Port 33308'''
	-->		-->
	With this modified ~~config~~ file in place, you can connect to ~~the network-default~~ {{host\|carbon}}, ~~but also to the~~ specific login ~~hosts~~ you configured.		With this modified configuration file in place, you can connect to either {{host\|"carbon"}}, or specific login host names you configured.
	: 1. Run once in your desktop session:		: 1. Run once in your desktop session:
	<font color="darkred">ssh -v mega</font>		<font color="darkred">ssh -v mega</font>

Stern: Stern moved page HPC/Network Access/SSH Tunnel Setup on Linux and MacOS to HPC/Network Access/SSH Tunnel Setup and Use

2025-04-23T13:49:46Z

Stern moved page HPC/Network Access/SSH Tunnel Setup on Linux and MacOS to HPC/Network Access/SSH Tunnel Setup and Use

← Older revision	Revision as of 13:49, April 23, 2025
(No difference)

Stern at 13:48, April 23, 2025

2025-04-23T13:48:14Z

← Older revision		Revision as of 13:48, April 23, 2025
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	The following sections document how to establish ssh tunneling on ~~a Linux or MacOS X machine~~ running [http://en.wikipedia.org/wiki/OpenSSH OpenSSH]. Numerous [http://www.google.com/search?hl=en&q=SSH+~~Windows~~ Windows solutions] are available to provide the same functionality, but details vary considerably.		The following sections document how to establish ssh tunneling on machines running [http://en.wikipedia.org/wiki/OpenSSH OpenSSH] or close relatives.
			OpenSSH is available on all major operating systems: Linux, macOS, Windows, and on mobile.
			<!--Numerous [http://www.google.com/search?hl=en&q=SSH+Windows solutions] are available to provide the same functionality, but details vary considerably. -->

	== Manual setup ==		== Manual setup ==