What is a Client-Based SSL VPN?

A Client-Based SSL VPN is defined by its requirement for a client application to be installed on the user's device to create a secure connection. This type of VPN typically provides a more robust and flexible connection than web-based options, as it can offer additional features like support for various operating systems and enhanced security protocols. The client application facilitates the communication between the user's device and the VPN server, enabling encrypted tunnels for data transmission, which is crucial for maintaining privacy and security.

Other options do not accurately describe a Client-Based SSL VPN. A web-based VPN, which is suggested in another choice, does not require installation of any client software, functioning solely through a web browser. The mention of a service that only encrypts emails points towards a different aspect of security that does not encompass the broader functionality and purpose of a VPN. Lastly, indicating that a VPN type operates exclusively on mobile devices does not align with the general principle of Client-Based SSL VPNs, as they can be used across various platforms and devices, including desktops and laptops.