DNS over HTTPS (DoH) is a protocol that encrypts DNS queries, enhancing your online privacy and security. Instead of sending your DNS requests in plain text (which can be intercepted and analyzed), DoH sends them over HTTPS, the same secure protocol used for browsing websites. This prevents your ISP, potential eavesdroppers, or malicious actors from seeing which websites you're accessing.
"Binding" in the context of DoH usually refers to configuring your operating system or device to always use a specific DoH resolver. This means your device will consistently use the chosen DoH service for all DNS lookups, overriding any default DNS settings. This ensures consistent encryption and privacy, regardless of the network you're on.
The process of binding DoH varies depending on your operating system and device. Here's a general overview and examples:
Windows doesn't offer a built-in method for directly binding DoH globally. However, you can achieve this using third-party tools or by configuring your network adapter's DNS settings to point to a DoH provider's HTTPS endpoint (e.g., using a custom script or modifying the registry. Proceed with caution when modifying the registry).
macOS allows you to specify custom DNS servers, which can include DoH endpoints. You can modify these settings in System Preferences > Network > Advanced > DNS. You'll need the HTTPS endpoint address from your chosen DoH provider.
Linux distributions typically use systemd-resolved for DNS resolution. You can configure DoH in the /etc/systemd/resolved.conf file by adding lines like these, replacing `example.com` with your chosen provider's address:
[Resolve]
DNS=cloudflare-dns.com/dns-query
After making changes, run sudo systemctl restart systemd-resolved.
Android's approach depends on the device and version. Some Android versions and custom ROMs allow changing DNS settings directly in the network settings. Others might require root access or using a VPN app that supports DoH.
iOS does not have a built-in option for directly specifying DoH. You can use a VPN app that supports DoH to achieve a similar effect.
Several reputable providers offer DoH services, including:
cloudflare-dns.com/dns-query)dns.google)dns.quad9.net)Research each provider's privacy policy and features to choose one that aligns with your needs.
While DoH enhances privacy and security, it's important to note:
Trust in the DoH Provider: You're placing trust in the selected provider to handle your DNS requests securely and responsibly. Choose a provider with a strong reputation and transparent privacy policy.
DoH doesn't protect against all attacks. Other security measures, like a strong VPN, are still recommended for comprehensive protection.
Binding your device to a DoH resolver offers a significant step towards enhancing your online privacy and security. By following the steps outlined above, you can effectively implement DoH and enjoy the benefits of encrypted DNS lookups.