The FortiGate 100D series provides next generation firewall capabilities for mid-sized to large enterprises. It protects against cyber threats with high performance security powered by a security processor. The series includes the FortiGate 100D, 140D, and 140D-POE, which deliver firewall throughput between 250-2.5 Gbps. They provide features such as intrusion prevention, web filtering, application control, VPN, and integrated sandboxing through the FortiOS operating system and FortiGuard services.