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Self-hosted SSH Proxy: Difference between revisions
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The Allegro Network Multimeter can be configured to to use SSH Port Forwarding to allow remote access to the device behind a NAT. | The Allegro Network Multimeter can be configured to to use SSH Port Forwarding to allow remote access to the device behind a NAT. | ||
The Multimeter will create a tunnel to an SSH endpoint and will open a listening port on the SSH server. | The Allegro network Multimeter will create a tunnel to an SSH endpoint and will open a listening port on the SSH server. | ||
This port can now be used to send HTTPS requests to the Multimeter. | This port can now be used to send HTTPS requests to the Allegro Network Multimeter. | ||
=== Preparing the SSH server === | === Preparing the SSH server === | ||
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Paste the line into the file and save/close the file. | Paste the line into the file and save/close the file. | ||
There are two options to access the Multimeter: | There are two options to access the Allegro Network Multimeter: | ||
==== Option 1: No proxy ==== | ==== Option 1: No proxy ==== | ||
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* uses default HTTPS port 443. | * uses default HTTPS port 443. | ||
* uses several filter mechanisms provided by the proxy software. | * uses several filter mechanisms provided by the proxy software. | ||
* uses the same SSH server as proxy for several Multimeters through SNI routing. | * uses the same SSH server as proxy for several Allegro Network Multimeters through SNI routing. | ||
Disadvantage: | Disadvantage: | ||
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} | } | ||
Forwarding to the Allegro Network Multimeter uses the configured server name. In this example, requests to '''allegro-mm-1234.mm-remote.company.com''' will be forwarded to the Multimeter. | Forwarding to the Allegro Network Multimeter uses the configured server name. In this example, requests to '''allegro-mm-1234.mm-remote.company.com''' will be forwarded to the Allegro Network Multimeter. | ||
This requires that the hostname is resolved by the DNS server. This can be solved by a wildcard DNS CNAME entry to point at the SSH server. | This requires that the hostname is resolved by the DNS server. This can be solved by a wildcard DNS CNAME entry to point at the SSH server. | ||
=== Configuration of the Multimeter === | === Configuration of the Allegro Network Multimeter === | ||
In the configuration dialogue, insert the parameters to access the SSH server. For example: | In the configuration dialogue, insert the parameters to access the SSH server. For example: | ||
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* Listening HTTPS Port on SSH Host: '''55443''' | * Listening HTTPS Port on SSH Host: '''55443''' | ||
The settings have to match the above configuration. '''Every Multimeter requires a separate HTTPS listening port..''' | The settings have to match the above configuration. '''Every Allegro Network Multimeter requires a separate HTTPS listening port..''' | ||
If the '''SSH user''' is not '''root, no port below 1024''' is possible. Otherwise, an error message will appear when trying to connect. | If the '''SSH user''' is not '''root, no port below 1024''' is possible. Otherwise, an error message will appear when trying to connect. | ||