Disabling the Logging of Unauthorized Writes

When the accept_unauthorized_writes parameter is OFF, the SCADA server treats all failed (unauthorized) write attempts as operator alarms and records these write attempts to all the alarm destinations enabled on the SCADA server. Using the parameter log_unauthorized_writes, you can disable the logging of failed writes by setting the parameter to OFF. When the parameter is not present in the NETWORK.INI file or set to ON, the SCADA logs all unauthorized write attempts.

To disable logging of unauthorized writes, configure your NETWORK.INI file as follows:

[WRITEACCESS]

accept_unauthorized_writes=OFF

log_unauthorized_writes=OFF

writenode1=VIEW01

writenode2=VIEW10

Once you create or modify the NETWORK.INI file, you changes take effect immediately.

You can also restrict database write access by assigning security areas to specific groups and users. For more information about security areas and how to use them with the accept_unauthorized_writes parameters, refer to the Configuring Security Features manual.

To restrict database write access to a SCADA server:

1. Open the NETWORK.INI on your SCADA server using a text editor. If available, this file resides in the iFIX Local path. If the file does not exist, create it in the iFIX Local path with your text editor.
2. Enter the following text:

[WRITEACCESS]

accept_unauthorized_writes=OFF

3. Add the following text if you want to disable the logging of unauthorized writes:

log_unauthorized_writes=OFF

4. Add the View clients that can access the local SCADA server. Use the format:

writenode#=nodename

5. Save the file and make sure the file resides in the iFIX Local path.

 

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