Which method can be used for securing remote connections in a FortiGate environment?

Utilizing VPN technology is an effective method for securing remote connections in a FortiGate environment because it ensures that data transmitted over the internet is encrypted, protecting sensitive information from potential eavesdroppers and attacks. VPNs create a secure tunnel between the user's device and the FortiGate firewall, facilitating secure communication even over untrusted networks.

This method offers various features such as authentication, which ensures that only authorized users can access the network, and encryption, which prevents unauthorized users from intercepting and reading the data. FortiGate devices support different types of VPNs, including IPsec and SSL VPNs, allowing organizations to choose the best option based on their specific needs and infrastructure.

Using unencrypted protocols would leave sensitive data exposed to potential interception, while implementing FortiGuard services alone does not provide the direct encryption and secure access functionality that VPNs do. Separating networks physically can improve security by limiting access points and controlling traffic, but it does not secure the data being transmitted over remote connections, which is where VPN technology excels.