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Technitium DNS Server [18] [19] is a free, opensource [20] (GPLv3), [21] cross platform, authoritative, caching and recursive DNS server software. It supports DNS-over-TLS, DNS-over-HTTPS, and DNS-over-QUIC encrypted DNS protocols. [22] It also supports DNSSEC signing and validation for RSA and ECDSA algorithms with both NSEC and NSEC3.
DNS zone transfer, also sometimes known by the inducing DNS query type AXFR, is a type of DNS transaction. It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers .
dnsmasq caches DNS records, reducing the load on upstream nameservers and improving performance, and can be configured to automatically pick up the addresses of its upstream servers. dnsmasq accepts DNS queries and either answers them from a small, local cache or forwards them to a real, recursive DNS server.
Code diversity makes it less likely that a performance or security bug in one DNS server could be exploited to inflict a Denial of Service attack upon an organization. It is for this reason that NSD and Knot DNS are frequently used by root and TLD operators. DNS management software can greatly simplify publishing DNS data to varying DNS servers ...
DNS over TLS (DoT) is a network security protocol for encrypting and wrapping Domain Name System (DNS) queries and answers via the Transport Layer Security (TLS) protocol. The goal of the method is to increase user privacy and security by preventing eavesdropping and manipulation of DNS data via man-in-the-middle attacks .
Unbound has supplanted the Berkeley Internet Name Daemon as the default, base-system name server in FreeBSD and OpenBSD, where it is perceived as smaller, more modern, and more secure for most applications.
Split-horizon DNS can provide a mechanism for security and privacy management by logical or physical separation of DNS information for network-internal access (within an administrative domain, e.g., company) and access from an unsecure, public network (e.g. the Internet).
The RPZ mechanism was developed by the Internet Systems Consortium led by Paul Vixie as a component of the BIND Domain Name Server (DNS). [1] It was first available in BIND release 9.8.1 released 2010, and first publicly announced at Black Hat in July, 2010. [2] It is also available in the Unbound software as of version 1.14.0. [3]