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Install a sensor

Before you can set up and run a scan, you must install at least one sensor. Discovery uses sensors to scan your network and send results back to the CertCentral cloud service.

Discovery sensor warning in CertCentral

Depending on the size of your network and how it’s segmented, you may need to install multiple sensors to get an accurate report on all your TLS/SSL certificates.

Proxy server for communications

Are you planning to install the DigiCert Sensor on a computer that requires a proxy server to communicate outside your network?

Verify the sensor will be able to relay its findings back to the CertCentral cloud service. See Configure a sensor to use a proxy server for communications.


The proxy configuration for the sensor enables the sensor to communicate with CertCentral cloud service. The proxy configuration is not for enabling the sensor to scan a host.