Siemens LOGO! CMR2040 Operating Instructions Manual page 100

Configuration (WBM)
5.11 Security
● Save standard server configuration
The CMR provides the option of exporting its own standard settings (OpenVPN server)
for the OpenVPN client to the file system of the connected PC using the file
"vpnpeer.conf". The file contains settings that ensure that a connection from the CMR to
the OpenVPN client is established. The file can be imported into the OpenVPN client
(mobile phone or PC).
The way the "vpnpeer.conf" file is handled depends on the method of address
assignment of the CMR:
– If you use DynDNS, you can use the file directly for the OpenVPN client.
– If you do not use DynDNS, you need to adapt the address data in the "vpnpeer.conf"
Pre-shared key
In this block, you can generate a new key or you can load a key file from the file system of
the connected configuration PC. This can, for example, be a pre-shared key generated by
the OpenVPN client.
The following functions are available:
● Generate new key
With the button, you generate a new pre-shared key on the CMR.
(The function corresponds to the "genkey" function of an OpenVPN client.)
For information on saving the key refer to the entry "Save standard server configuration
for client" below.
● Currently used file
Display of the file name of the currently used key file
● File used after applying
After loading a key file from the file system, the name of the loaded file is displayed here.
● Load new file
After selecting a file stored on the configuration PC using the "Search button, the file
name is displayed here.
● Search
Searches the file system of the configuration PC for a key file saved there that is intended
to be loaded on the CMR.
● Load on device
With the buttons load the selected file on the CMR.
● Save standard server configuration for client
With this entry you can save the configuration file of the CMR in the file system of your
configuration PC. The file has the name "vpnpeer.conf" and among other things contains
the pre-shared key generated by the CMR.
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file. To do this, the file can be edited with a text editor, see section below,
LOGO! CMR2020,
Operating Instructions, 10/2016, C79000-G8976-C356-03
LOGO! CMR2040