What is a VPN?
A VPN creates a virtual connection between a device and another network or service. Common implementations carry traffic through an encrypted tunnel. Corporate remote access and consumer internet VPN services can serve different purposes.
Tunnels and traffic routing
The client sends selected traffic to a VPN server, which forwards it to the destination. Full tunneling carries most traffic, while split tunneling routes only designated destinations through it. Corporate users can reach authorized internal systems outside the office. With consumer services, websites usually see the VPN exit address. Local observers may see less information, but the need for trust remains: provider practices and device security become important. HTTPS and the VPN tunnel are separate protection layers. Using a VPN does not make HTTPS unnecessary.
Privacy and selection criteria
A VPN does not provide complete anonymity. Signed-in accounts and cookies can link activity, and a password entered into a fraudulent site is not protected merely because a VPN is active. Server distance, congestion and tunnel processing affect latency. Consider the purpose, logging policy, update support and traffic handling after disconnection. Accessing company files requires the organization's authorized solution, not an arbitrary consumer service. Troubleshooting may compare connections with and without a VPN, but corporate rules should not be disabled. A VPN is not a single security tool that replaces updated software, strong authentication and careful use.