Summary#

Although I’ve covered this in various challenges. I thought I’d notate how to check a local TLS certificate using the OpenSSL command. This can be useful for when you want to confirm you’re using the right certificate or just look it over.

Checking TLS Certificate#

Below is a simple command for viewing a certificate in OpenSSL with just the certificate.

openssl x509 -in certificatefile.cert -noout -text

Conclusion#

This was a brief note providing the command show showing information about a certificate on a local system using the openssl(1) command.