Best Practices for DNS over TLS

Best practice 1

DoT is an encrypted DNS transport method that adds TLS protection to DNS communication.

Cloudflare explains that DoT is a standard for encrypting DNS queries to keep them secure and private.

DoT sends DNS traffic over a TLS-protected connection, commonly using port 853.

This helps protect DNS requests and responses from easier observation or tampering while they move over the network.

Best practice 2

DoT matters because traditional DNS is plaintext by default.

Encrypting DNS traffic can improve privacy and reduce some risks from interception or manipulation.

A common misconception is that DoT and DoH are exactly the same thing. They pursue similar goals but use different transport styles.

Another misconception is that encrypted DNS removes the need for other security controls. It helps, but it is one layer in a bigger picture.

Best practice 3

A common misconception is that DoT and DoH are exactly the same thing. They pursue similar goals but use different transport styles.

Another misconception is that encrypted DNS removes the need for other security controls. It helps, but it is one layer in a bigger picture.

The simplest rule to remember

The best practices around DNS over TLS usually make the most sense when they are tied to real-world goals like reliability, security, performance, or clarity.

That is why understanding the purpose of DNS over TLS matters as much as memorizing its definition.

Related questions

What to learn next

Sources

• Cloudflare 1.1.1.1: DNS over TLS
• Cloudflare Learning Center: DNS over TLS