Requirements For Use - Siemens LOGO! CMR2040 Operating Instructions Manual

Application and functions

1.3 Requirements for use

OpenVPN is implemented on the CMR as a TUN device (routing mode). The following
security functions are supported:
● Encryption
The data to be transferred is encrypted with the AES-128 CBC method.
● Authentication of the connection partner
SHA-256 is used as hash algorithms for authenticating the user data.
You will find the requirements for the OpenVPN client on the VPN partner in the section
Requirements for use (Page 18).
Diagnostics via LAN and WAN
Using the WBM you can view a diagnostics buffer for diagnostics purposes. It is also
possible to save the diagnostics buffer on the SD card or the PC.
You will find details in the section Diagnostics options (Page 131).
1.3 Requirements for use
Requirements for operation
● Mobile wireless contract with SIM card
To use the mobile wireless communication via the WAN interface of the CMR, you require
a contract with a suitable mobile wireless network provider.
For more information on the contract and SIM card see below.
● Mobile wireless network
To be able to use the mobile wireless interface, there must be a mobile wireless network
within the reach of the CMR.
● Data contract
For the following data services you require a data contract with your mobile wireless
network provider:
E-mail, NTP, DynDNS, OpenVPN, HTTPS via mobile wireless
● NTP
For time-of-day synchronization using NTP, apart from the requirements listed above
(SIM card, data contract, mobile wireless network) you also require the address data of
an NTP server.
● OpenVPN
Apart from the requirements listed above (SIM card, data contract, mobile wireless
network) you also require the following to use OpenVPN via the mobile wireless network:
– A public IP address for the CMR
– An OpenVPN client as communications partner (e.g. PC for access to the WBM of the
18
CMR)
LOGO! CMR2020,
Operating Instructions, 10/2016, C79000-G8976-C356-03
LOGO! CMR2040