How can I know whether any Sterling Secure Proxy configuration values are changed?

You can create a rule so that IBM® Sterling Control Center Monitor detects when a user changes a configuration value on a Sterling Secure Proxy server.

When IBM Sterling Control Center Monitor detects a changed configuration value on a Sterling Secure Proxy server, an event of type Server Status with message IDs of CSSP100I through CSSP199I are generated. You can write a rule that specifies the following values:
Key Operator Value
Message ID Wildcard CSSP1*

This rule watches for the range of message IDs associated with configuration changes.