OpenSSL is an open-source toolkit used for Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. The project is globally managed by a volunteer community. This post guides on installing the latest OpenSSL version on Ubuntu 16.04 | 18.04 LTS systems, as the default Ubuntu version isn't up-to-date. The tutorial includes downloading and manually installing the package, updating paths for man pages and binaries, and restarting Ubuntu for recognition.