By default, DNS is sent over a plaintext connection. DNS over TLS (DoT) is one way to send DNS queries over an encrypted connection. Cloudflare supports DNS over TLS on standard port 853 and is compliant with RFC 7858 ↗. With DoT, the encryption happens at the transport layer, where it adds TLS encryption on top of a TCP connection.
How it works
Cloudflare supports DNS over TLS (DoT) on 1.1.1.1, 1.0.0.1, and the corresponding IPv6 addresses (2606:4700:4700::1111 and 2606:4700:4700::1001) on port 853. If your DoT client does not support IP addresses, Cloudflare’s DoT endpoint can also be reached by hostname on one.one.one.one. A stub resolver (the DNS client on a device that talks to the DNS resolver) connects to the resolver over a TLS connection:
Before the connection, the DNS stub resolver has stored a base64 encoded SHA256 hash of the TLS certificate from 1.1.1.1 (called SPKI).
DNS stub resolver establishes a TCP connection with 1.1.1.1:853.
DNS stub resolver initiates a TLS handshake.
In the TLS handshake, 1.1.1.1 presents its TLS certificate.
Once the TLS connection is established, the DNS stub resolver can send DNS over an encrypted connection, preventing eavesdropping and tampering.
All DNS queries sent over the TLS connection must comply with specifications of sending DNS over TCP ↗.
To prevent this and secure your connections, 1.1.1.1 supports DNS over TLS (DoT) and DNS over HTTPS (DoH), two standards developed for encrypting plaintext DNS traffic. This prevents untrustworthy entities from interpreting and manipulating your queries. You can also configure your browser to secure your DNS queries.
Cloudflare's 1.1.1.1 DNS service has been ranked as the fastest DNS resolver globally by the independent DNS monitor DNSPerf. Cloudflare's network extends to 310 cities worldwide, enabling quick DNS response times for users globally, hence recommended for excellent speed and stability.
From a privacy perspective, DoH might be preferable since DNS queries are hidden within the larger flow of HTTPS traffic. This provides users with more privacy but makes it harder for network administrators to block malicious traffic, as doing so would require blocking all other HTTPS traffic as well.
1.1.1.1 isn't a foolproof VPN product. Your data is somewhat exposed, and hackers can steal it. If you're not completely aware of that fact, you could do things online that may come back to haunt you later.
DNS over HTTPS (DoH) is a recommended feature that enhances privacy for everyone. When you type a web address into your address bar, Firefox sends a secure DNS request to look up the IP address for that website over the Internet.
While implementing DNS over TLS can offer enhanced privacy and security, there are several potential drawbacks that need to be considered. These include compatibility challenges, reliance on trusted DNS resolvers, and regulatory and legal considerations.
DNS-over-TLS improves privacy and security between clients and resolvers. This complements DNSSEC and protects DNSSEC-validated results from modification or spoofing on the way to the client.
Your ISP is able to monitor requests to these IP addresses so yes they could possible track your activity. If you want encryption you will need a router that supports DoT (DNS over TLS) and configure it to use 1dot1dot1dot1.cloudflare-dns.com.
Websites and third-party services often infer geolocation from your IP address, and now, 1.1.1.1 + WARP replaces your original IP address with one that consistently and accurately represents your approximate location. With hidden IPs , WARP has further closed the gap with other consumer VPN services.
Attackers often hide harmful code in sites and emails that seem normal. These attacks can put your family's private information in the wrong hands. 1.1.1.1 for Families adds a layer of malware protection to your home Wi-Fi, automatically blocking access to known malicious sites.
DNS queries are sent in plaintext, which means anyone can read them. DNS over HTTPS and DNS over TLS encrypt DNS queries and responses to keep user browsing secure and private.
DNS over HTTPS (DoH) is a protocol that encrypts DNS traffic by passing DNS queries through an HTTPS encrypted session. DoH can help improve online security and privacy and protect DNS queries from attacks.
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