Configuration, programming
4.4 Security
CP 1543-1
42 Operating Instructions, 05/2017, C79000-G8976-C289-07
Online diagnostics via port 8448
Security diagnostics without opening port 102
If you want to perform security diagnostics without opening port 102, follow the steps below:
1. Select the CP in STEP 7.
2. Open the "Online & diagnostics" shortcut menu (right mouse button).
3. In the parameter group "Security > Status" click the "Connect online" button.
In this way you perform the security diagnostics via port 8448.
Online diagnostics and downloading to station with the firewall activated
Setting the firewall for online functions
With the security functions enabled, follow the steps outlined below:
1. In the global security settings (see project tree), select the entry "Firewall > Services >
Define services for IP rules".
2. Select the "ICMP" tab.
3. Insert a new entry of the type "Echo Reply" and another of the type "Echo Request".
4. Now select the CP in the S7 station.
5. Enable the advanced firewall mode in the local security settings of the CP in the "Security
> Firewall" parameter group.
6. Open the "IP rules" parameter group.
7. In the table, insert a new IP rule for the previously created global services as follows:
– Action: Allow; "From external -> To station " with the globally created "Echo request"
service
– Action: Allow; "From station -> to external" with the globally created "Echo reply"
service
8. For the IP rule for the Echo Request, enter the IP address of the engineering station in
"Source IP address". This ensures that only ICMP frames (ping) from your engineering
station can pass through the firewall.
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