A Virtual Private Network, commonly known as a VPN, is a technology that creates an encrypted connection between your device and the internet. With growing concerns about online privacy and data security, understanding how VPNs work has become increasingly relevant for internet users in India.
How a VPN Works
When you connect to the internet without a VPN, your data travels from your device to your Internet Service Provider and then to the website you are visiting. Your ISP can see every website you visit, and the websites you visit can see your IP address, which reveals your approximate location.
A VPN creates a secure tunnel between your device and a server operated by the VPN provider. Your internet traffic is encrypted before it leaves your device, routed through the VPN server, and then sent to its destination. This means your ISP can see that you are connected to a VPN but cannot see what you are doing, and the websites you visit see the VPN server’s IP address instead of yours.
Legitimate Uses of a VPN
Protecting Data on Public Wi-Fi
Public Wi-Fi networks at cafes, airports, and hotels are often unsecured. Without encryption, anyone on the same network could potentially intercept your data, including passwords and financial information. A VPN encrypts all your traffic, making it unreadable to potential attackers.
Maintaining Privacy
Internet service providers in many countries can legally collect and sell your browsing data. A VPN prevents your ISP from seeing your browsing activity, adding a layer of privacy to your internet usage.
Secure Remote Work
Many organisations require employees to connect through a VPN when accessing company resources remotely. This ensures that sensitive business data remains encrypted and protected, even when accessed from a home network or public connection.
Choosing a VPN Service
When selecting a VPN, consider the provider’s logging policy (a no-logs policy means they do not store records of your activity), the encryption protocol used (OpenVPN and WireGuard are currently the most trusted), connection speed, and the number and location of servers available. Free VPN services often monetise through advertising or by selling user data, which defeats the purpose of using a VPN for privacy.
Limitations of VPNs
A VPN is not a complete security solution. It does not protect you from malware, phishing attacks, or poor password practices. Think of a VPN as one layer in a broader approach to online security that should also include strong passwords, two-factor authentication, and updated software.
