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Knot DNS

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to achieve very fast loading of the zones at the startup. It is also able to add and remove zones on the fly by changing the configuration file and reloading the server using the 'knotc' utility.
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New in 3.3.0: full DNS over QUIC (using both XDP and operating system TCP/IP-stack), bidirectional XFR over QUIC, multi-signer operation mode.
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New in 2.3.0: DNSSEC signing configured in server configuration, automatic NSEC3 resalting, zone operations over server control interface,
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New in 2.8.0: Offline-KSK, multithreaded DNSSEC signing, extended ACL for DDNS, zone update speed-up.
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under Linux, catalog zones support, continuous DNSSEC validation, kzonesign and kxdpgun utilities,
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based KASP database, KSK rollover, dynamic modules, zone freeze/thaw, zone contents in journal.
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New in 1.5.0: query modules with two new modules: "Automatic forward/reverse records" and
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New in 2.2.0: Response Rate Limiting white listing, support for URI (RFC 7553) and
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New in 1.6.0: persistent timers for slave zones (expire, refresh, and flush) using
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New in 2.7.0: Performance improvement, new module for DNS Cookies, new module for
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support in kdig, deterministic ECDSA support, on-line backup of persistent data.
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based journal, new statistics module, automatic deletion of retired DNSSEC keys.
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New in 2.0.0: new YAML-based configuration, and new DNSSEC implementation using
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New in 2.6.0: On-slave DNSSEC signing, automatic DNSSEC algorithm rollover,
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New in 3.2.0: full DNS over TCP using XDP (including transfers), DNS over
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New in 3.1.0: basic DNS over TCP using XDP, routing-aware XDP processing,
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domain registry. The purpose of this project is to supply an alternative
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operators to increase overall security, stability and resiliency of the
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mode in Linux, which can improve response performance significantly.
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Response rate benchmark of several OSS authoritative name servers
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implementation of an authoritative DNS server suitable for
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Since version 3.0.0, Knot DNS supports a high performance
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Presentation at DNS OARC 32 633:Peltan, Libor (2020-09-09). 490:Peltan, Libor (2020-02-08). 479:Knot DNS memory requirements 374:generation and validation, 758: 512:Knot DNS 3.0 Benchmarking 86: 60: 21: 264:New in 1.4.0: automatic 220:or a special kind of a 637:. Blog of CZ.NIC staff 313:New in 2.4.0: Unified 248:Response Rate Limiting 48:; 12 years ago 46:December 12, 2011 712:DNS server benchmarks 386:error (EDE) support, 73:; 11 days ago 635:"Knot DNS 3.0 News" 407:New in 3.4.0: full 331:algorithm support, 18: 214:Domain Name System 194:Domain Name System 187:authoritative-only 177: 176: 749: 708: 707: 705:Official website 690: 685: 679: 674: 668: 663: 657: 652: 646: 645: 643: 642: 630: 624: 619: 613: 608: 602: 597: 591: 586: 580: 575: 569: 564: 558: 553: 547: 542: 536: 531: 525: 520: 514: 509: 503: 502: 500: 499: 487: 481: 476: 470: 465: 443: 438: 437: 436: 218:Read-copy-update 173: 170: 168: 127:Operating system 118: 113: 110: 108: 106: 104: 102: 81: 79: 74: 56: 54: 49: 26: 19: 757: 756: 752: 751: 750: 748: 747: 746: 722: 721: 703: 702: 699: 694: 693: 686: 682: 675: 671: 664: 660: 653: 649: 640: 638: 632: 631: 627: 620: 616: 609: 605: 598: 594: 587: 583: 576: 572: 565: 561: 554: 550: 543: 539: 532: 528: 521: 517: 510: 506: 497: 495: 489: 488: 484: 477: 473: 466: 462: 457: 439: 434: 432: 429: 244: 165: 121: 99: 82: 77: 75: 72: 52: 50: 47: 43:Initial release 12: 11: 5: 755: 753: 745: 744: 739: 734: 724: 723: 720: 719: 714: 709: 698: 697:External links 695: 692: 691: 688:Knot DNS 3.4.0 680: 677:Knot DNS 3.3.0 669: 666:Knot DNS 3.2.0 658: 655:Knot DNS 3.1.0 647: 625: 622:Knot DNS 3.0.0 614: 611:Knot DNS 2.9.0 603: 600:Knot DNS 2.8.0 592: 589:Knot DNS 2.7.0 581: 578:Knot DNS 2.6.0 570: 567:Knot DNS 2.5.0 559: 556:Knot DNS 2.4.0 548: 545:Knot DNS 2.3.0 537: 534:Knot DNS 2.2.0 526: 523:Knot DNS 2.1.0 515: 504: 482: 471: 459: 458: 456: 453: 452: 451: 445: 444: 428: 425: 415:over QUIC and 342:, support for 320:New in 2.5.0: 246:New in 1.2.0: 243: 240: 175: 174: 163: 159: 158: 153: 147: 146: 141: 135: 134: 129: 123: 122: 120: 119: 96: 94: 88: 87: 84: 83: 70: 68: 66:Stable release 62: 61: 58: 57: 44: 40: 39: 34: 28: 27: 13: 10: 9: 6: 4: 3: 2: 754: 743: 740: 738: 735: 733: 730: 729: 727: 718: 717:Knot Resolver 715: 713: 710: 706: 701: 700: 696: 689: 684: 681: 678: 673: 670: 667: 662: 659: 656: 651: 648: 636: 629: 626: 623: 618: 615: 612: 607: 604: 601: 596: 593: 590: 585: 582: 579: 574: 571: 568: 563: 560: 557: 552: 549: 546: 541: 538: 535: 530: 527: 524: 519: 516: 513: 508: 505: 493: 486: 483: 480: 475: 472: 469: 464: 461: 454: 450: 447: 446: 442: 431: 426: 424: 422: 418: 414: 410: 405: 402: 400: 395: 393: 389: 385: 381: 377: 373: 368: 366: 362: 357: 355: 350: 347: 345: 341: 336: 334: 333:TCP Fast Open 330: 325: 323: 318: 316: 311: 309: 304: 302: 297: 295: 290: 288: 283: 281: 276: 274: 269: 267: 262: 260: 255: 253: 249: 241: 239: 237: 232: 230: 225: 223: 219: 215: 211: 207: 203: 199: 195: 191: 188: 185: 181: 172: 164: 160: 157: 154: 152: 148: 145: 142: 140: 136: 133: 130: 128: 124: 117: 112: 98: 97: 95: 93: 89: 85: 69: 67: 63: 59: 45: 41: 38: 35: 33: 29: 25: 20: 732:DNS software 683: 672: 661: 650: 639:. 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Retrieved 485: 474: 463: 409:DNS over TLS 406: 403: 396: 369: 358: 351: 348: 337: 326: 319: 312: 305: 298: 291: 284: 277: 270: 263: 256: 245: 233: 226: 179: 178: 32:Developer(s) 252:Dynamic DNS 206:open-source 184:open-source 156:GPL license 726:Categories 641:2020-09-09 498:2020-09-09 455:References 222:radix tree 144:DNS server 92:Repository 78:2024-09-02 53:2011-12-12 394:support. 310:in kdig. 242:Changelog 169:.knot-dns 132:Unix-like 109:/knot-dns 427:See also 423:module. 294:PKCS #11 192:for the 180:Knot DNS 17:Knot DNS 329:Ed25519 162:Website 151:License 76: ( 51: ( 392:kqueue 372:ZONEMD 287:GnuTLS 273:dnstap 266:DNSSEC 200:, the 198:CZ.NIC 190:server 182:is an 101:gitlab 37:CZ.NIC 388:epoll 380:HTTPS 340:GeoIP 259:Ragel 229:Ragel 107:/knot 413:DDNS 399:QUIC 384:EDNS 376:SVCB 322:LMDB 315:LMDB 280:LMDB 139:Type 111:.git 103:.nic 421:RRL 417:TLS 365:DoH 361:UDP 354:TCP 344:ECS 308:TLS 301:CAA 236:XDP 210:TLD 202:.CZ 171:.cz 167:www 105:.cz 728:: 411:, 346:. 335:. 289:. 282:. 275:. 250:, 224:. 644:. 501:. 390:/ 378:/ 80:) 55:)

Index


Developer(s)
CZ.NIC
Stable release
Repository
gitlab.nic.cz/knot/knot-dns.git
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Operating system
Unix-like
Type
DNS server
License
GPL license
www.knot-dns.cz
open-source
authoritative-only
server
Domain Name System
CZ.NIC
.CZ
open-source
TLD
Domain Name System
Read-copy-update
radix tree
Ragel
XDP
Response Rate Limiting
Dynamic DNS
Ragel

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