A Virtual Private Network (VPN) creates a secure, encrypted connection between your device and the internet, hides your IP address, and protects your data from hackers or prying eyes. By routing your traffic through a private server, a VPN ensures your online activity remains private, whether you’re browsing on public Wi-Fi, streaming geo-restricted content like US Netflix, or downloading files securely. With a VPN, you can bypass internet censorship, access blocked websites, and enjoy a safer, more open internet experience.
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What is a VPN?
A Virtual Private Network (VPN) creates a secure, encrypted connection between your device and the internet, hiding your IP address and protecting your data from hackers or third parties. By routing your traffic through a private server, a VPN ensures privacy, enables access to geo-restricted content (e.g., US Netflix or YouTube in restricted regions), and secures your connection on public Wi-Fi. It’s widely used by individuals, businesses, and organizations for secure remote access and to bypass internet censorship.
How does a Virtual Private Network (VPN) work?
A Virtual Private Network (VPN) works by creating an encrypted connection between your device and the internet. When you connect to a VPN, your internet traffic is routed through a remote server operated by the VPN provider, which encrypts your data to ensure it remains secure. This process hides your IP address and location, making it difficult for third parties, such as your Internet Service Provider (ISP) or potential hackers, to track your online activities.
A virtual private network protects your connection and all data that passes through that connection in three layers:
1st layer → Encryption. Before anything else, your VPN encrypts your data (or converts all the information into a code that can’t be unencrypted without a matching key). So even if an unauthorized person manages to get hold of your data, they still won’t be able to understand it.
2nd layer → Tunneling Protocol. Your VPN then establishes a direct connection between your computer and a VPN server. This private “tunnel” secures your connection over the public internet.
3rd layer → Authentication. Only users with the right authentication keys can access the tunnel and the VPN server. This is also the protocol that un-encrypts your data after it reaches its destination.
A VPN creates a private “tunnel” from your device to the Internet and hides your important data through something known as encryption.
What are VPN protocols?
A VPN protocol is basically the technology that uses your VPN service to ensure that you get the fastest and most secure connection to the Internet. Combining encryption standards and transmission protocols, a VPN protocol determines how your data is transmitted between your device and a VPN server. The main VPN protocols in use today are:
- Point-to-Point Tunneling Protocol (PPTP): One of the oldest protocols, developed by Microsoft. It’s fast but has known security vulnerabilities, making it obsolete for most users. Avoid unless no other options are available.
- Layer 2 Tunneling Protocol (L2TP/IPSec): Combines L2TP (for tunneling) with IPSec (for encryption). It’s more secure than PPTP but slower due to double encapsulation. Suitable for basic privacy needs.
- Secure Socket Tunneling Protocol (SSTP): Developed by Microsoft, SSTP uses SSL/TLS encryption, similar to secure websites (HTTPS). It’s highly secure but limited to Windows in most cases.
- Internet Key Exchange, version 2 (IKEv2/IPSec): A fast and secure protocol, ideal for mobile devices due to its ability to reconnect quickly. Often paired with IPSec for encryption.
- OpenVPN: An open-source protocol known for its strong security and flexibility. It’s widely regarded as the gold standard, suitable for most users, and supports multiple platforms.
- WireGuard: A newer, open-source protocol that’s faster and more efficient than OpenVPN and IKEv2. It’s increasingly popular for its simplicity and security, ideal for streaming and gaming.
Secure browsing on Windows. |
Security Level
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Speed
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Compatibility
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Best Use Case
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PPTP
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Low (vulnerable)
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Fast
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Windows, older systems
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Legacy systems (not recommended)
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L2TP/IPSec
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Moderate
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Moderate
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Windows, macOS, iOS, Android
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General browsing, basic privacy
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SSTP
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High
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Moderate
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Windows (limited on others)
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Secure browsing on Windows
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IKEv2/IPSec
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High
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Fast
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Windows, macOS, iOS, Android
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Mobile devices, frequent switching
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OpenVPN
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Very High
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Moderate-Fast
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Windows, macOS, iOS, Android, Linux
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High security, streaming
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WireGuard
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Very High
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Very Fast
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Windows, macOS, iOS, Android, Linux
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Streaming, gaming, and general use
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Before taking a VPN, it is a good idea to see what protocols they provide and what will happen if you are using their VPN.
Different types of VPN services
Many VPNs will work directly with an operating system’s settings – such as Windows, Mac OS, iOS, or Android – so that every app that connects to the Internet – such as a browser, banking, or social media app – is protected.
Standalone VPN Service
This VPN is most commonly used by households and small businesses. It uses an application that creates an encrypted connection to a private network that you can use to connect to the Internet at large.
Browser Extensions
Some VPNs operate as browser extensions. There are a plethora of add-ons that you can install in a browser like Google Chrome or Firefox, while Opera comes with an inbuilt VPN. The downside is that your data will be protected only when you use that browser exclusively. Other apps will not be safe. In addition, browser VPNs are slightly more vulnerable and may cause IP leaks.
If you decide to opt for a browser add-on or extension, it is best to take it from reputable companies offering other VPN services. There are a lot of shady browser add-ons, scammy, read reviews from a data harvester and always read the fine print of terms of service.
Router VPN
Another way to implement VPN is through a VPN-enabled router. This is ideal if you have multiple devices that you want to protect as it will protect every device connected to the router, saving you to install VPN individually. Also, you only have to sign in once; Your router will always be connected to your VPN.
Connecting your router to a VPN is not as difficult as you might think. First, you have to sign up for a VPN service, then you will need a router. The most convenient router to obtain is one designed to provide instant VPN support. These routers may be slightly more expensive than regular routers, but the convenience is worth it.
Corporate VPN (Corporate VPN)
Corporations often use remote-access VPNs for employees who work remotely. Through this VPN, employees can securely access the company’s private intranet, often using passwords and apps. It is a custom-made solution that requires personalized development and heavy IT resources.
Why do people use VPNs?
People use VPNs for countless reasons. Some of these reasons are specific, while others use VPNs as an additional layer of security alongside a good antivirus program and typically have sensible Internet access.
- Privacy on Public Wi-Fi: VPNs encrypt your data on unsecured networks, like those in cafes or airports, preventing hackers from intercepting sensitive information.
- Bypassing Geo-Restrictions: Access content unavailable in your region, such as US Netflix, BBC iPlayer, or YouTube in countries with censorship (e.g., China or Iran).
- Anonymity Online: Hide your IP address to prevent tracking by websites, advertisers, or governments, especially in regions with heavy surveillance.
- Secure Remote Work: Access company networks securely from home or while traveling.
- Safe Torrenting: Protect your identity and data while downloading torrents, avoiding ISP throttling or legal risks.
Things to Consider When Choosing a VPN
Hopefully, you now have a better idea of how a VPN works. Here is a list of things to look at before choosing a VPN:
- Free vs. Paid: Paid VPNs typically offer stronger security, faster speeds, and more servers. Free VPNs may have limitations, use weaker protocols (e.g., PPTP), or log your data for sale. Reputable free VPNs (e.g., ProtonVPN Free) exist but often have bandwidth or server restrictions.
- Legality: Ensure VPNs are legal in your country. They’re banned or restricted in some regions, like China or Russia.
- Server Locations: Choose a VPN with servers in countries relevant to your needs (e.g., US servers for Netflix).
- Logging Policy: Opt for a VPN with a strict no-logs policy to ensure your activity isn’t recorded.
- Device Coverage: Confirm the VPN protects all your apps, not just browsers, unless you only need a browser extension.
- Protocols: Use modern protocols such as OpenVPN or WireGuard for optimal security and speed.
- Server Count and Bandwidth: More servers and higher bandwidth mean faster, more reliable connections.
- Customer Support: Paid VPNs often provide 24/7 support, which is crucial for troubleshooting.
VPNs are essential tools for privacy, security, and accessing restricted content. Whether you’re streaming, working remotely, or browsing on public Wi-Fi, a reliable VPN can keep your data safe.
