Knot DNS is a high performance authoritative-only DNS server. It supports all key features of the domain name system including zone transfers, dynamic updates, and DNSSEC.
| Tags | DNS dnssec |
|---|---|
| Licenses | GPL |
| Operating Systems | Linux FreeBSD NetBSD OpenBSD |
| Implementation | C |
| Translations | Czech English |
Recent releases


Release Notes: This release fixes wildcard CNAME NSEC/NSEC3 answers and potential problems in RCU synchronization.


Release Notes: This release includes a fix for incoming IXFR, and also includes all Knot 1.0.4 changes: fixes several bugs, improves loading time for many zones, and significantly speeds up incoming IXFR.


Release Notes: This release fixes the UDP payload limit being applied to TCP queries, has a zone compilation time regression fix, and fixes compilation on FreeBSD.


Release Notes: This release corrects handling of EDNS0 when TCP is used (it was applying the UDP size limit). It fixes slow compilation of zones. It fixes a potential crash with many concurrent transfers. It fixes a missing include for FreeBSD.


Release Notes: This release features improved overall performance of answering, slightly improved IXFR memory requirements, slightly improved overall memory requirements, and improved log messages. Handling of some RR types (SPF, WKS, DLV, APL, NSAP, IPSECKEY, unknown types) and handling of some special IXFR cases (including a problem with Power DNS masters) were fixed. Zone bootstrapping, compilation on BSD systems, and several leaks were fixed.