What is the main function of Fortinet’s FortiGate?

The primary function of Fortinet's FortiGate is to act as a network security appliance. FortiGate devices are specifically designed to protect networks by offering a range of security features, including firewall protection, intrusion prevention, VPN capabilities, and antivirus services. They are integral in safeguarding the network from various threats and ensuring secure connectivity for users and devices.

FortiGate appliances play a critical role in enforcing security protocols and policies, monitoring traffic for vulnerabilities, and providing an overall layered security approach to network management. This makes them essential tools for organizations aiming to maintain a secure IT environment while also achieving efficient network performance.

The other options do not align with the core functionality of FortiGate. Storage solutions and content delivery network management are not within the primary capabilities of FortiGate appliances, nor do they focus on application performance, which is a different aspect of IT infrastructure management. Therefore, the correct answer reflects the specific purpose of FortiGate in maintaining network security.