TheSSS 23.1 is a small update to the open-source, server-oriented GNU/Linux distribution and it’s based on the recently released 4MLinux Server 23.1 operating system, which means that it runs the Linux 4.9.61 LTS kernel under the hood, along with other updates like OpenSSL 1.0.2m, Postfix 3.2.4, and Stunnel 5.43. On the server side of things, TheSSS 23.1 updates the MariaDB database server to version 10.2.10, the Apache web server to version 2.4.29, as well as the PHP packages to both 7.0.25 and 5.6.32 releases, the latter being available for compatibility reasons.