Mullvad VPN and DNS over HTTPS (DoH): A Comprehensive Guide

Many users choose Mullvad VPN for its strong privacy focus and commitment to security. A crucial aspect of online privacy is DNS resolution, and using DNS over HTTPS (DoH) enhances this protection even further. This guide explains what DoH is, its benefits, how it works with Mullvad, and how to configure it effectively.

What is DNS over HTTPS (DoH)?

The Domain Name System (DNS) translates human-readable domain names (like "google.com") into machine-readable IP addresses (like 172.217.160.142) that your computer uses to connect to websites. Traditionally, DNS queries are sent in plain text over UDP or TCP, making them susceptible to eavesdropping and manipulation. DoH encrypts these DNS queries using HTTPS, the same protocol that secures your web browsing. This prevents third parties, including your ISP, from seeing which websites you're visiting.

Benefits of Using DoH with Mullvad

• Increased Privacy: DoH encrypts your DNS queries, hiding your browsing activity from your ISP and potential network eavesdroppers. This is particularly valuable when using public Wi-Fi hotspots.
• Enhanced Security: DoH protects against DNS spoofing and cache poisoning attacks, which can redirect you to malicious websites.
• Improved Performance (Potentially): Some DoH resolvers may offer faster lookup times than traditional DNS servers, though this isn't always guaranteed.
• Synergy with Mullvad: Combining DoH with Mullvad's VPN service provides a layered approach to privacy, masking your IP address and encrypting your DNS queries. This creates a more robust security posture.

How DoH Works with Mullvad

Mullvad doesn't force you to use a specific DoH provider. You retain the freedom to choose your preferred resolver. However, using a DoH resolver alongside Mullvad's VPN service requires configuring your operating system or application to use your chosen DoH provider and ensures the traffic is routed through the VPN.

Configuring DoH with Mullvad (Examples)

The specific steps for configuring DoH vary depending on your operating system and DNS client. Here are some common examples:

1. Using your Operating System's Settings (Examples):

Many modern operating systems (Windows 10/11, macOS, various Linux distributions) allow you to directly configure DoH within their network settings. Look for options related to "DNS settings," "Network preferences," or "Advanced settings." You'll typically need to enter the address of your chosen DoH resolver, such as:

• Cloudflare: https://cloudflare-dns.com/dns-query
• Google Public DNS over HTTPS: https://dns.google/dns-query
• Quad9: https://dns.quad9.net/dns-query

Important Note: Ensure your Mullvad VPN connection is active *before* configuring DoH. This ensures all your DNS traffic is routed through the VPN tunnel and your privacy is maintained.

2. Using a DNS Client (Example):

Applications like unbound or Stubby allow more granular control over DNS settings. These often require configuring a configuration file, specifying the DoH server address and other parameters. Consult the specific documentation for your chosen client for instructions.

Choosing a DoH Resolver

Selecting a reputable DoH provider is crucial. Consider factors like privacy policy, logging practices, and geographic location. While the providers listed above are popular choices, research and compare different options to find one that aligns with your privacy needs.

Troubleshooting

If you encounter issues, ensure your Mullvad VPN is connected correctly. Double-check your DoH settings and confirm that the resolver address is accurate. If problems persist, consult Mullvad's support documentation or the documentation of your chosen DoH resolver.

Conclusion

Implementing DoH with Mullvad provides a robust privacy and security enhancement. By encrypting your DNS queries, you add an extra layer of protection to your online activity. Remember to choose a trustworthy DoH resolver and ensure your Mullvad VPN connection is active before configuring DoH for optimal results.