The PRTG SSL Security Check Sensor is a specialized tool designed to monitor and assess the security of SSL/TLS certificates installed on web servers. Here are some common usages and configurations for the SSL Security Check Sensor:

1. SSL Certificate Expiration Monitoring: The primary use of the SSL Security Check Sensor is to monitor the expiration date of SSL/TLS certificates installed on web servers. It checks the validity period of certificates and alerts administrators when certificates are nearing expiration.

2. Certificate Chain Verification: Verify the integrity and validity of the certificate chain associated with SSL/TLS certificates using the SSL Security Check Sensor. It validates the certificate chain by checking the issuer and subject of each certificate in the chain.

3. Key Length Assessment: Assess the security strength of SSL/TLS certificates by monitoring the key length of cryptographic keys used for encryption. The SSL Security Check Sensor can detect weak keys and recommend upgrading to stronger encryption algorithms for enhanced security.

4. TLS Protocol Version Monitoring: Monitor the TLS protocol versions supported by SSL/TLS certificates using the SSL Security Check Sensor. It checks for deprecated or insecure TLS versions and recommends upgrading to newer, more secure versions for better security posture.

5. Cipher Suite Assessment: Assess the security of SSL/TLS certificates by monitoring the cipher suites supported by web servers. The SSL Security Check Sensor can detect weak or outdated cipher suites and recommend configuring web servers to prioritize stronger cipher suites for improved security.

6. HTTP Public Key Pinning (HPKP) Monitoring: Monitor the implementation of HTTP Public Key Pinning (HPKP) using the SSL Security Check Sensor. It checks for the presence of HPKP headers in HTTP responses and verifies the validity of pinned public keys to prevent certificate-based attacks.

7. Certificate Transparency (CT) Monitoring: Monitor compliance with Certificate Transparency (CT) requirements using the SSL Security Check Sensor. It checks for the presence of CT logs in SSL/TLS certificates and verifies that certificates are logged to public CT databases for transparency and accountability.

8. Threshold-based Alerting: Set up threshold-based alerts to be notified when SSL/TLS certificates exhibit security vulnerabilities or when certificates are nearing expiration. You can configure different alerting levels (e.g., warning and error) based on the severity of security issues.

9. Scheduled Scans: Configure scheduled scans to periodically assess the security of SSL/TLS certificates using the SSL Security Check Sensor. This ensures continuous monitoring of certificate security without manual intervention.

10. Integration with Maps and Dashboards: Visualize the status of SSL Security Check Sensors on maps and dashboards within PRTG Network Monitor. This provides a centralized view of certificate security across the network and facilitates proactive security management.

By leveraging the capabilities of the SSL Security Check Sensor in PRTG Network Monitor, you can effectively monitor and maintain the security of SSL/TLS certificates, detect security vulnerabilities, and ensure compliance with industry best practices and standards.