Knot DNS is an open-source Domain Name System (DNS) server that provides secure and high-performance resolution of DNS queries. It was created by CZ.NIC, the registry for the .cz country code top-level domain (ccTLD) for the Czech Republic.
Knot DNS was designed to be modular, scalable, and secure, with features such as DNSSEC validation, zone transfers, and dynamic updates. It uses a non-blocking architecture to achieve high-performance and can handle large volumes of queries. Additionally, Knot DNS supports various operating systems, including Linux, FreeBSD, and macOS.
One of the unique features of Knot DNS is its use of a database backend, which allows for efficient storage and management of DNS zone data. The server also has a flexible configuration system, making it easy to customize and adapt to specific use cases.
High performance: Knot DNS is designed for high performance and can handle a large number of queries per second, making it suitable for large-scale deployments.
Security: Knot DNS includes support for DNSSEC and other security features, making it resistant to various types of attacks and vulnerabilities.
Flexibility: Knot DNS is highly configurable and can be customized to fit a wide range of deployment scenarios and requirements.
Scalability: Knot DNS can be scaled horizontally across multiple servers, making it suitable for large and complex networks.
Reliability: Knot DNS includes various features for ensuring high availability and uptime, such as automatic failover and redundancy.
Overall, Knot DNS is a reliable and robust DNS server that has gained popularity among system administrators and network engineers for its high-performance, security, and flexibility.