OpenNA Linux was a GPL-licensed Linux operating system with rock-solid stability and industrial-strength networking. Highly secure, very fast, and modern Linux operating system, it was intended for those who want to install and run a Linux server for mission critical tasks in a high secure environment. With OpenNA Linux, you have the choice to install different pre-defined types of servers which will install only what was required for the server to run with the required service. If you want to run a web server in your network, then OpenNA Linux will install at your demand the required packages to provide this service. In this way your server will never keep software that you don't know or you don't need for the services you want to provide.