DNS over TLS (DoT) is a security protocol that encrypts DNS queries and responses using the Transport Layer Security (TLS) protocol. Designed to increase the privacy and security of DNS queries and their responses, this protocol operates similarly to DNS over HTTPS (DoH) and was introduced in 2016. It is available on all common operating systems and generally helps protect users from data breaches, snooping, and other forms of malicious attacks.
DoT works by establishing an encrypted connection between the client and the DNS server before sending a query. This allows the server to authenticate the client to ensure that only valid requests are sent. During the TLS negotiation, the client and server also mutually agree upon an encryption algorithm protocol, which is used to encrypt the data before transmission.
Although DoT was designed to protect the privacy of DNS queries, it does not guarantee user anonymity as IP addresses may still be visible to attackers. Furthermore, since DoT requires encryption, it works slower compared to plaintext DNS queries.
Overall, DNS over TLS is a secure protocol that provides an additional layer of protection for DNS queries and their corresponding responses. It provides greater privacy and security to users but does not guarantee user anonymity. As such, it can provide a valuable safeguard against data breaches, snooping, and other malicious attacks.
