VPN extension for Firefox

The Surfshark Firefox proxy extension securely routes your Firefox traffic through Surfshark’s servers, masking your IP address for enhanced online privacy. It encrypts the connection between your browser and Surfshark but doesn’t create a full-device VPN tunnel. For better security, you should still visit HTTPS websites.

Note: Unlike most proxy extensions, Surfshark also masks your IP address.

Yes, reputable VPNs are generally safe and provide additional privacy by encrypting your internet connection and hiding your IP address. However, it’s important to choose a trustworthy VPN provider to ensure that your data is secure.

For example, Surfshark has undergone an independent infrastructure audit to assure users that it has a secure and robust server network.

To turn on a VPN on Firefox, download a VPN extension from a reputable provider in the Firefox Add-ons store, then log in and activate it through the extension’s interface. This will route your browser’s traffic through the VPN.

To check if your VPN extension is working, run a VPN test. The results should display the location of your VPN server rather than your actual location. Most VPN extensions also indicate active connections within dedicated icons.

When you turn on the VPN in your Firefox browser, it will encrypt and route your traffic through its servers, allowing you to browse securely and access familiar content when traveling abroad. Simply browse as you normally would for added privacy.

Firefox offers some free privacy tools, but its main VPN service, Mozilla VPN, requires a paid subscription. Some limited privacy extensions may offer free access, but full VPN services typically come with a cost.

Yes, there are free VPN extensions for Firefox, but their privacy practices and performance may vary. Be cautious with a free VPN, as some services may collect data or limit your browsing speed and server choices.

Mozilla VPN is a full-device VPN that encrypts all traffic from your device across all apps. A Firefox VPN extension only protects traffic inside the Firefox browser, and many VPN extensions from third parties other than Mozilla are available.

No, a Firefox VPN extension can’t provide full protection from all online threats, but no single tool can. A VPN extension helps secure your Firefox browsing, but other apps and system services remain exposed to threats like malware or phishing.

A comprehensive security suite with a full-device VPN, antivirus software, data leak alerts, and more — like Surfshark — offers broader protection.

There’s no single best VPN for Firefox because every user’s needs vary by speed, location, and privacy features. Paid VPNs generally provide stronger security, faster speeds, better support, and fewer limits than a free VPN.

WebRTC (Web Real-Time Communication) leaks happen when a person tries to make a video or audio call with another person via a browser that uses the WebRTC protocol. The browser reveals your real IP address, even if a VPN connection is active.

WebRTC allows real-time communication between browsers without an intermediate server. Many websites use this technology to improve video and audio chats.

Surfshark’s Firefox extension has a built-in function that helps prevent WebRTC leaks. To turn it on, open the extension, click Settings, then VPN Settings, and toggle WebRTC on.

Check out our guide on performing a WebRTC leak test to learn more.