As interconnected computer networks enter more and more fields of everyday life, cybersecurity is getting louder and louder. We protect our websites, the traffic on our websites, the computers we initiate the traffic from, maybe (part of) the disks our operating system run from, our connection to work, the computers we attach to at work, and so on.
openssl is an essential tool on any recent GNU/Linux distribution if one have to work with various certificates.
In this tutorial we will install (and reinstall) the openssl package, and test it’s functionality by checking a website’s certificate chain with it’s help.
In this tutorial you will learn:
- How to install openssl
- How to reinstall openssl
- How to check a website’s SSL certificate chain with openssl