Introduction

What is Knot DNS

Knot DNS is a high-performance open-source DNS server. It implements only the authoritative domain name service. Knot DNS is best suited for use on TLD domains but it can reliably serve any other zones as well.

Knot DNS benefits from its multi-threaded and mostly lock-free implementation which allows it to scale well on SMP systems and operate non-stop even when adding or removing zones.

Knot DNS features

DNS features:

  • IN class and partially CH class
  • TCP/UDP protocols
  • AXFR, IXFR – master, slave
  • TSIG
  • EDNS0
  • DNSSEC, including NSEC3
  • NSID
  • Dynamic updates
  • Response Rate Limiting
  • RR types A, NS, CNAME, SOA, PTR, HINFO, MINFO, MX, TXT, RP, AFSDB, RT, KEY, AAAA, LOC, SRV, NAPTR, KX, CERT, DNAME, APL, DS, SSHFP, IPSECKEY, RRSIG, NSEC, DNSKEY, DHCID, NSEC3, NSEC3PARAM, TLSA, CDS, CDNSKEY, SPF, NID, L32, L64, LP, EUI48, EUI64, URI, CAA and Unknown

Server features:

  • Adding/removing/editing zones on-the-fly
  • Reconfiguring server instance on-the-fly
  • Dynamic configuration
  • IPv4 and IPv6 support
  • Semantic checks of zones
  • DDNS support
  • Persistent zone timers
  • Automatic DNSSEC signing
  • PKCS #11 interface
  • Forward and reverse records synthesis
  • DNS request traffic statistics

For more info and downloads see www.knot-dns.cz.

Git repository: git://git.nic.cz/knot-dns.git

Knot DNS issue tracker: gitlab.nic.cz/labs/knot/issues

Knot DNS users mailing list: knot-dns-users@lists.nic.cz

License

Knot DNS is licensed under the GNU General Public License version 3 or (at your option) any later version. The full text of the license is available in the COPYING file distributed with source code.