Name: Siemens SIMATIC S7-1200 CP 1243-8 IRC
Brand: Siemens
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Configuration

4.16 Security

CP 1243-8 IRC

114 Operating Instructions, 02/2018, C79000-G8976-C385-03

3. In the global security settings, double-click on the entry "VPN groups" > "Assign module

to a VPN group".

4. Assign the security modules between which VPN tunnels will be established to the VPN

group.

Note

Current date and current time on the CP for VPN connections

Normally, to establish a VPN conne

ction and the associated recognition of the certificates to

be exchanged, the current date and the current time are required on both stations.

The establishment of a VPN connection to an engineering station or an ST7cc/sc PC runs as

follows along with the

time of day synchronization of the CP:

On the engineering station or the ST7cc/sc PC, you want the CP to establish a VPN

connection. The VPN connection is established even if the CP does not yet have the current

time. Otherwise the certificates used are ev

aluated as valid and the secure communication

will work.

Following connection establishment, the CP synchronizes its time of day with the PC

because the ST7cc/sc PC is the time master if telecontrol communication is enabled.

Configure the properties of the VPN group

1. Double-click on the newly created VPN group.

Result: The properties of the VPN group are displayed in the "Properties" > "General" tab

of the Inspector window under "Authentication".

2. You configure the pre-shared key or the certificate under the properties of the VPN group.

These properties define the default settings of the VPN group that you can change at any

time.

Note

Specifying the VPN properties of the CPs

You specify the VPN properties of the CPs in the "Security" > "Firewall" > "VPN"

parameter

group of the relevant module.

Result

You have created a VPN tunnel. The firewalls of the CPs are activated automatically.

The "Activate firewall" check box is selected automatically when you assign the security

module to a VPN group. You cannot deselect the check box.

Download the configuration to all modules that belong to the VPN group.

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Siemens SIMATIC S7-1200 CP 1243-8 IRC Specifications

General