Accessing PRTG Interface

1. Open your web browser and navigate to the PRTG Network Monitor web interface.
2. Log in using your credentials to access the dashboard.

Adding SSL/TLS Certificate Sensor

1. From the PRTG dashboard, navigate to "Devices" or "Groups" where you want to add the sensor.
2. Click on the "Add Sensor" button.
3. Search for the "SSL Certificate" sensor type and select it.
4. Choose the target device or server for which you want to monitor SSL/TLS certificate OCSP responses.
5. Configure sensor settings such as scanning interval and notification thresholds.

Configuring SSL/TLS Certificate Sensor

1. Once the sensor is added, click on it to access its settings.
2. Under the "Settings" tab, configure parameters specific to monitoring OCSP responses.
3. Enable monitoring for OCSP response status.
4. Specify the SSL/TLS certificate to monitor by providing its hostname or IP address.
5. Set up monitoring frequency and notification triggers based on your requirements.
6. Save the settings to apply the changes.

Setting Up Alarms

1. Within the SSL/TLS certificate sensor settings, navigate to the "Alarms" tab.
2. Configure alarm thresholds for OCSP response status, such as response time, validity, or errors.
3. Define severity levels for alarms, such as warnings or errors, based on the importance of the OCSP response status.
4. Customize alarm notifications by selecting notification methods (email, SMS, etc.) and recipients.
5. Set up escalation levels to ensure timely responses to alarms.
6. Save the alarm settings to activate them.

Reviewing Alarm Notifications

1. As the sensor monitors SSL/TLS certificate OCSP responses, it will trigger alarms based on configured thresholds.
2. Access the alarm overview to view real-time alarms and their statuses.
3. Receive notifications via configured methods whenever an alarm is triggered.
4. Review alarm details to understand the cause and severity of the OCSP response issue.
5. Take appropriate actions to resolve the underlying problems, such as investigating certificate configurations or network connectivity.

Troubleshooting and Maintenance

1. In case of any issues or discrepancies, review alarm logs and error messages for troubleshooting.
2. Ensure that the SSL/TLS certificate and OCSP responder configurations are correct and up-to-date.
3. Verify network connectivity between the PRTG server and the OCSP responder.
4. Regularly review and adjust alarm thresholds based on changing network conditions and requirements.
5. Keep PRTG Network Monitor updated to the latest version to benefit from enhancements and bug fixes.

Monitoring SSL/TLS certificate OCSP responses with alarms in PRTG Network Monitor allows for proactive detection and resolution of issues, ensuring the reliability and security of certificate validation services in your network infrastructure. By following this manual, you can effectively configure and utilize SSL/TLS certificate sensors with alarms, enabling timely responses to OCSP response status changes. This proactive approach helps maintain the integrity and trustworthiness of SSL/TLS certificates across your network.