VPN technology: How it works and how to configure it

A Virtual Private Network (VPN) functions by routing internet traffic through an encrypted tunnel to a remote server, which masks a user's public IP address. This process can help bypass geographic restrictions and protect privacy when using untrusted public Wi-Fi networks. While a VPN hides the destination from local network providers, it introduces a new element of trust, as the VPN provider can observe connection metadata and destinations.

On mobile devices like the iPhone, users can connect to a VPN either through dedicated applications from the App Store—such as ProtonVPN—or via manual configuration in the device settings under ‘VPN and Device Management’. When selecting a service, key considerations include encryption levels, connection speeds, and server availability. It is noted that a VPN is not a complete security solution, as it cannot prevent malware, phishing attacks, or tracking when a user is signed into personal online accounts.