Private and SMTP-TLS Certificate Expiration Monitoring
As an IT Administrator, I want a native PRTG sensor to conveniently monitor the expiration dates of private and SMTP-TLS certificates, eliminating the need for custom scripts. This will ensure I'm proactively alerted to expiring certificates, preventing service disruptions and security vulnerabilities.
AdminAntje Pich
(Admin, Paessler)
shared this idea
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Billy Cole
commented
The nature of using openssl to extract the expiry date is fairly straight forward, the problem becomes when the certificate is within a protocol handshake, like SNMP, SQL Server 1433, or within a java keystore, or MS keystore.
Instead of going after the certificate directly, provide a way to store the certificate on the PRTG core servers, then have a sensor monitor it from there.
If you want to be very helpful, provide a utility that can be scheduled to go extract the certificate from a web port, or key store, or from a server directory and copy it to the core servers' certificate store.
This would open up a vast array of certificate monitoring options and would be more performant than querying for the certificate.
On the sensor, also provide documentation on adding threshold triggers for 60,30, and 7 days left till expiry.