The Fortinet FortiGate 100D FG-100D Security Appliance is an enterprise firewall designed to provide robust security for computer networks. As part of the Fortinet brand, known for its reliable networking products, the FG-100D model is specifically designed to handle the security needs of a business enterprise. With its advanced features and high performance capabilities, this security appliance is ideal for businesses looking to protect their network from unauthorized access and potential cyber threats.