Our company was established in the middle of 1999 to develop the ALF firewall. Security and reliability were the the two most important goals in the development of the services and systems of the company from the beginning. Our company mainly uses Unix (primarily Linux) systems, we deal with the planning, installation, and maintenance of these. During our operation we learned, applied then integrated in our portfolio the virtualisation, too. Since 2006 we have been cooperating as the VMware Enterprise Partner with audit, training, consulting and operation in this area.