DNS over HTTPS

DNS over HTTPS (DoH) is a technology that transmits DNS queries via the encrypted HTTPS protocol. The Domain Name System (DNS) is a fundamental component of the internet, as it translates domain names (e.g., “example.com”) into IP addresses that computers can process. Traditionally, DNS queries are sent unencrypted, making them vulnerable to interception by third parties or manipulation through attacks such as DNS spoofing. With DoH, these queries are fully encrypted, protecting user privacy and enhancing network security.

DoH uses the HTTPS protocol to treat DNS queries like any other secure web request. Communication between the device and the DNS resolver is encrypted, preventing internet service providers or third parties from viewing the query contents or the accessed pages. This marks a significant upgrade to existing security standards, as DoH effectively eliminates the vulnerabilities of conventional, unencrypted DNS queries. DoH is typically implemented automatically in the background and does not affect network speed or functionality.

Encrypted DNS queries are becoming increasingly important in everyday life. Companies use them to secure sensitive data against surveillance or interception. In schools and other educational institutions, DoH ensures safe internet usage while complying with data protection regulations. This creates secure digital learning and working environments without potential threats limiting access.

Combining DoH with other security measures, such as content filtering or a VPN, enhances the integrity of the entire IT infrastructure. It preserves user privacy while enabling administrators to ensure that DNS queries are processed both securely and anonymously. This encryption offers strong protection against attacks like man-in-the-middle and DNS spoofing.

DNS over HTTPS is a key technology for modern network security. It enables encrypted, secure communication and has proven to be an essential tool for safeguarding data and accessing sensitive information in an increasingly complex digital environment.