DNS over HTTPS (DoH): Enable or Disable? A Comprehensive Guide

The question of whether to enable or disable DNS over HTTPS (DoH) is a common one among internet users. DoH is a protocol that encrypts your DNS queries, adding a layer of privacy to your online activity. However, it also introduces some potential drawbacks. This guide will explore both sides of the coin, helping you make an informed decision based on your individual needs and priorities.

What is DNS over HTTPS?

Your computer uses the Domain Name System (DNS) to translate human-readable website addresses (like google.com) into IP addresses (like 172.217.160.142) that computers understand. Traditionally, these DNS queries are sent in plain text, making them vulnerable to eavesdropping and manipulation. DoH solves this by encrypting these queries using HTTPS, the same protocol that secures your web browsing.

Benefits of Enabling DoH

• Enhanced Privacy: DoH prevents your internet service provider (ISP) and other potential eavesdroppers from seeing which websites you visit. This is a significant advantage for users concerned about their online privacy.
• Improved Security: Encryption protects your DNS queries from manipulation, reducing the risk of DNS spoofing and other attacks that can redirect you to malicious websites.
• Censorship Resistance: In some regions with internet censorship, DoH can help bypass restrictions by encrypting DNS queries and making them harder to block.
• Faster DNS Resolution (in some cases): Some DoH providers offer faster DNS resolution than traditional DNS servers, leading to quicker website loading times.

Drawbacks of Enabling DoH

• Potential for Circumvention of Parental Controls: If parental controls rely on DNS filtering, DoH could bypass these controls, allowing access to inappropriate content.
• Reduced Network Transparency for IT Administrators: Companies and organizations managing networks may find it difficult to monitor and troubleshoot DNS issues when DoH is enabled, as the encrypted traffic obscures the details of DNS requests.
• Compatibility Issues: Older devices or software may not fully support DoH.
• Reliance on Third-Party Providers: You are placing your trust in the DoH provider to handle your DNS requests securely and privately. Choosing a reputable provider is crucial.

How to Enable or Disable DoH

The method for enabling or disabling DoH varies depending on your operating system and browser. Here's a general overview:

Browsers:

Many modern browsers (like Chrome, Firefox, and Edge) offer built-in support for DoH. Check your browser's settings to find the DoH configuration options. You can usually select a specific DoH provider or disable DoH altogether.

Operating Systems:

Some operating systems (like Android and some versions of Linux) also allow configuring DoH at the system level. Consult your operating system's documentation for specific instructions.

Routers:

Some routers allow you to configure DoH settings directly on the router itself. This applies DoH to all devices connected to the router.

Choosing a DoH Provider

If you decide to enable DoH, it's important to choose a reputable provider. Consider providers with strong security reputations and a clear privacy policy. Some popular options include Google Public DNS over HTTPS, Cloudflare DNS over HTTPS, and Quad9.

Conclusion

The decision of whether to enable or disable DoH depends on your individual circumstances and priorities. Weigh the privacy and security benefits against potential drawbacks like compatibility issues and the implications for network management. By carefully considering these factors and understanding the available options, you can make the best choice for your needs.