Siemens Simatic RTU303xC Series Operating Instructions Manual page 158

Configuration (WBM)
4.16 Security
Alternatively, you can import a third-party certificate. For example, it can be a certificate
signed by a public certification authority and issued to the host name you have entered
under DynDNS and under the RTU which you can reach on the Internet.
● Currently used file
Display of the file name of the currently used file
● Delete
With the button, you delete the currently used file. The file is deleted only after you click
"Apply" button.
After deleting an imported certificate, the RTU once again uses the self-issued certificate
from the factory settings.
● File used after applying
After loading the certificate, 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 certificate file saved there that is
intended to be loaded on the RTU.
● Load on device
With the button "Load on device" load the selected file on the RTU.
Own key
With the factory settings, the RTU uses a self-issued server certificate and the corresponding
private key for authentication with the communication partner (client).
If you import a third-party certificate, you must also import the corresponding private key
here. The private key must not be encrypted with a password.
● Currently used file
Display of the file name of the currently used file
● Delete
With the button, you delete the currently used file.
The file is deleted only after you click "Apply" button.
● File used after applying
After loading the key file, the name of the loaded file is displayed here.
● Load new file
After selecting a key file stored on the configuration PC using the "Search" button, the file
name is displayed here.
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Operating Instructions, 06/2019, C79000-G8976-C382-06
RTU303xC