Linux offers very powerful packet filtering functions that do not need to hide behind commercial firewalls. At the application level gateway level, Linux also offers possible alternatives to commercial firewalls. products. Simply build your own secure open source firewall, based on your preferred Distribution. After completing this course you can plan, implement and maintain a Linux firewall. Linux as a special feature also offers transparent firewalls on a bridge and high availability.
Prerequisites: Experience in the administration of a Linux system. Basic knowledge of network protocols.