The Ftp/Sftp Server - Webdyn WebdynSunPM User Manual

The concentrator communicates with one or more remote servers using the FTP/SFTP
protocol and/or the MQTT/MQTTS protocol. These servers can be used to manage the
concentrator remotely.
Remote servers have several roles:
• Storing the data and alarms collected locally by the concentrator:
Each time a connection is made to the server, whether by manual request, the
triggering of an alarm or the triggering of the Connection Schedule, the concentrator
takes advantage of the connection to the server to upload its stored data.
• Save a copy of the configuration:
A backup of the concentrator configuration is available in the "/CONFIG" directory of
the server. Each time the concentrator configuration is changed (locally or remotely),
the concentrator sends a copy of its configuration to this directory.
• Configure the concentrator or trigger actions on it:
The configuration or command files must be uploaded to the server in an INBOX
directory associated with the concentrator.
• Monitor the concentrator and assist in diagnosis:
The concentrator can upload log files for diagnosis purposes.
If only one of the servers is an FTP/SFTP server, the client must choose whether to
define it as server 1 or server 2 depending on the required behaviour:
- Server 1: the FTP/SFTP will be considered a main server
- Server 2: the FTP/SFTP will be considered a backup server.
The main server is used to create or modify the configuration and send commands,
as well as to receive alarms.
The backup server is only used as a copy of the files uploaded to the main server. It
cannot create or modify the configuration or carry out any actions.

The FTP/SFTP server

FTP and SFTP servers operate identically. The use of an SFTP server is preferable because of
the extra security layers compared to a classic FTP server. The description in this section is
equally valid for both types of server.
Parameters:
The FTP server is defined by the following parameters:
An address: This can be an IP address or a domain name.
-
An FTP connection port (by default 21).
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