What Is a VPN and Why Should You Use One? | Neyews
Introduction
A VPN, or Virtual Private Network, creates a protected connection between a device and a VPN server. The technology is commonly used to improve privacy and security when accessing online services.
How Does a VPN Work?
When a VPN application connects to a VPN server, network traffic is sent through the VPN connection. The VPN server then communicates with websites and other internet services on behalf of the connected device.
The exact implementation depends on the VPN protocol and service being used.
VPN Encryption
VPN protocols use cryptographic techniques to protect traffic between the device and VPN server.
This can be especially useful when using networks where the local network operator should not be able to directly inspect the contents of protected traffic.
Using a VPN on Public Wi-Fi
Public Wi-Fi networks can expose users to security risks when connections are not properly protected. A VPN can add another layer of protection by encrypting traffic between the device and the VPN server.
VPNs and Privacy
A VPN can change the public IP address that websites see by routing traffic through the VPN server.
However, a VPN does not make a user completely anonymous. Websites can still use accounts, cookies, browser characteristics and other information to identify or track activity.
Common VPN Protocols
- WireGuard
- OpenVPN
- IKEv2/IPsec
Different protocols use different designs and features. VPN providers may support one or several protocols depending on their infrastructure and applications.
What a VPN Cannot Do
A VPN is not a replacement for antivirus software, secure passwords, software updates or careful browsing habits.
A VPN also does not automatically make every website secure. HTTPS should still be used for web traffic whenever available.
Choosing a VPN Service
When evaluating a VPN service, consider its privacy policy, supported protocols, server locations, applications, connection performance and business model.
It is also important to understand how the provider handles connection information and other data.
Conclusion
A VPN is a useful networking and privacy technology that creates a protected connection between a device and a VPN server. It can be particularly useful on untrusted networks and when users want their internet traffic to appear to originate from a VPN server.
However, VPNs are only one component of good online security.