I want to understand how a VPN fundamentally works. For example, when I connect to a VPN, are my data packets encrypted and sent through a different server? Or does it just change my IP address? I'd like to learn the basic logic behind this, no need for a detailed technical explanation.
How does a VPN hide our internet traffic?
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VPN (Virtual Private Network) essentially serves two main functions: **protecting data privacy** and **bypassing geo-restrictions**. Its basic logic works by routing internet traffic through a remote server in between. The VPN service you connect to encrypts all data flow between your device and the target server—this way, third parties (potential eavesdroppers, ISPs, or government agencies) cannot read the data you send or receive. For example, when doing banking transactions or using public Wi-Fi, a VPN creates the impression that your data is moving within a "secret tunnel."
The change in IP address is actually a byproduct of this process. When you connect to a VPN, your device uses the VPN server’s IP instead of your real one. This way, websites or services accessing the internet see the server’s location rather than your actual location. For instance, if you connect to a VPN server in the U.S., you appear to be accessing geo-restricted content as if you were in the U.S. However, it’s important to remember that **encrypting all your traffic** is far more significant than just changing your IP—since changing your IP is more about hiding your location rather than providing anonymity.