What is the primary function of a VPN?

The primary function of a VPN, or Virtual Private Network, is to connect two private networks over a public network. A VPN creates a secure and encrypted connection between the user's device and the VPN server, which effectively extends the private network across the internet. This secure tunnel allows users to send and receive data as if their devices were directly connected to the private network.

This capability is particularly useful for remote workers accessing company resources securely or for businesses that want to connect branch offices that are physically separated. The encryption provided by the VPN also enhances security, ensuring that sensitive data remains protected from unauthorized access while in transit over potentially insecure networks, such as the internet.

While enhancing video streaming quality, providing faster internet access, or blocking advertisements may be ancillary benefits dependent on specific use cases or configurations, they do not represent the primary purpose of a VPN. The core functionality lies in its ability to safeguard data and enable secure connections between private networks.