Bypass System DNS: Why and How to Use DNS over HTTPS (DoH)

Tired of your system's DNS settings? Want more privacy and security when browsing the internet? Switching to DNS over HTTPS (DoH) might be the solution you're looking for. This article explores the benefits of using DoH, explains why you might want to bypass your system's default DNS settings, and guides you through the process of implementing DoH on various devices and browsers.

Why Bypass System DNS Settings and Use DoH?

Your operating system typically uses a DNS server provided by your internet service provider (ISP). While convenient, this setup presents several potential drawbacks:

• Privacy Concerns: Your ISP can see every website you visit, even if you use HTTPS. DoH encrypts your DNS queries, hiding your browsing activity from your ISP and potential eavesdroppers.
• DNS Spoofing and Manipulation: Malicious actors could potentially manipulate your DNS settings to redirect you to fake websites (phishing). DoH adds a layer of security by encrypting the communication.
• Censorship: Some ISPs or governments may block access to certain websites through DNS manipulation. Using a public DoH server can circumvent such censorship.
• Improved Performance: Some DoH providers utilize advanced caching and infrastructure, potentially leading to faster DNS resolution times.
• Increased Security: DoH uses HTTPS, a well-established secure protocol, protecting your DNS queries from tampering and eavesdropping.

How Does DNS over HTTPS Work?

Instead of sending your DNS queries over plain text (UDP or TCP), DoH encrypts them using HTTPS. This means your request to resolve a domain name (e.g., `google.com`) is sent as an encrypted HTTPS request to a DoH server. The server then responds with the IP address, also encrypted. This entire process remains private and secure.

Choosing a DoH Provider

Several reputable providers offer DoH services. Consider factors like privacy policies, geographic location of servers, and performance when making your choice. Some popular options include:

• Cloudflare (1.1.1.1): Known for its speed and privacy focus.
• Google Public DNS (8.8.8.8): A widely used and reliable option.
• Quad9 (9.9.9.9): Prioritizes security and blocking malicious domains.
• OpenDNS (208.67.222.222): Offers various features including parental controls.

Important Note: Research each provider carefully and review their privacy policies before making a decision.

Implementing DoH: A Step-by-Step Guide

The process of setting up DoH varies depending on your operating system and browser. Here's a general overview:

Browsers:

Many modern browsers directly support DoH. Check your browser's settings to configure the DNS server. For example, in Chrome or Firefox, you can usually find the DoH setting under Privacy and Security or Network.

Operating Systems:

Some operating systems (like some versions of Windows and macOS) allow setting a custom DNS server at the system level. This affects all applications, not just the browser. Consult your operating system's documentation for instructions on how to modify the DNS settings.

For more advanced users, you can use specialized DNS clients that provide additional features and customization options.

Troubleshooting and Considerations

If you encounter problems after switching to DoH, consider the following:

• Firewall or Antivirus Interference: Ensure your firewall or antivirus software isn't blocking DoH connections.
• Incorrect Server Address: Double-check that you've entered the DoH server address correctly.
• Network Configuration: Make sure your network settings are correctly configured.

By carefully choosing a DoH provider and correctly configuring your settings, you can significantly improve your online privacy and security by bypassing your system's default DNS settings.