Configuration
4.9 Security (CP 1543SP-1)
CP 154xSP-1
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Operating Instructions, 12/2019, C79000-G8976-C426-05
4.9.2.4
Firewall settings for S7 connections via a VPN tunnel
IP rules in advanced firewall mode
If you set up configured connections (S7, OUC) with a VPN tunnel between the CP and a
communications partner, you will need to adapt the local firewall settings of the CP:
In advanced firewall mode ("Security > Firewall > IP rules") select the action "Allow*" for both
communications directions of the VPN tunnel.
4.9.3
Log settings - Filtering of the system events
Communications problems if the value for system events is set too high
If the value for filtering the system events is set too high, you may not be able to achieve the
maximum performance for the communication. The high number of output error messages
can delay or prevent the processing of the communications connections.
In "Security > Log settings > Configure system events", set the "Level:" parameter to the
value "3 (Error)" to ensure the reliable establishment of the communications connections.
4.9.4
E-mail configuration
Requirements and necessary information
Note the following requirements in the CP configuration for the transfer of e-mails:
●
The security functions are enabled.
●
The time of the CP is synchronized.
For the configuration, you require the data of the SMTP server and the user account:
●
Server address, port number, user name, password, e-mail address of the sender (CP)
●
With encrypted transfer: Server certificate
