February 22, 2021How to Check the Expiry Date of an SSL/TLS CertificateFor a couple of years now, I use the fantastic (and free*) service by Let’s Encrypt in order to generate SSL/TLS certificates. One of the main differences to paid certs is that the ones of Let’s Encrypt are only valid 90 days. This sounds bad at first, but actually this is a good thing from a security perspective, and anyway, you do not create / renew certs manually, but one of the many clients do this for you automatically....