niammuddin

default unbound freeBSD

Dec 24th, 2022
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  1. #
  2. # Example configuration file.
  3. #
  4. # See unbound.conf(5) man page, version 1.17.0.
  5. #
  6. # this is a comment.
  7.  
  8. # Use this anywhere in the file to include other text into this file.
  9. #include: "otherfile.conf"
  10.  
  11. # Use this anywhere in the file to include other text, that explicitly starts a
  12. # clause, into this file. Text after this directive needs to start a clause.
  13. #include-toplevel: "otherfile.conf"
  14.  
  15. # The server clause sets the main parameters.
  16. server:
  17. # whitespace is not necessary, but looks cleaner.
  18.  
  19. # verbosity number, 0 is least verbose. 1 is default.
  20. # verbosity: 1
  21.  
  22. # print statistics to the log (for every thread) every N seconds.
  23. # Set to "" or 0 to disable. Default is disabled.
  24. # statistics-interval: 0
  25.  
  26. # enable shm for stats, default no. if you enable also enable
  27. # statistics-interval, every time it also writes stats to the
  28. # shared memory segment keyed with shm-key.
  29. # shm-enable: no
  30.  
  31. # shm for stats uses this key, and key+1 for the shared mem segment.
  32. # shm-key: 11777
  33.  
  34. # enable cumulative statistics, without clearing them after printing.
  35. # statistics-cumulative: no
  36.  
  37. # enable extended statistics (query types, answer codes, status)
  38. # printed from unbound-control. default off, because of speed.
  39. # extended-statistics: no
  40.  
  41. # number of threads to create. 1 disables threading.
  42. # num-threads: 1
  43.  
  44. # specify the interfaces to answer queries from by ip-address.
  45. # The default is to listen to localhost (127.0.0.1 and ::1).
  46. # specify 0.0.0.0 and ::0 to bind to all available interfaces.
  47. # specify every interface[@port] on a new 'interface:' labelled line.
  48. # The listen interfaces are not changed on reload, only on restart.
  49. # interface: 192.0.2.153
  50. # interface: 192.0.2.154
  51. # interface: 192.0.2.154@5003
  52. # interface: 2001:DB8::5
  53. # interface: eth0@5003
  54.  
  55. # enable this feature to copy the source address of queries to reply.
  56. # Socket options are not supported on all platforms. experimental.
  57. # interface-automatic: no
  58.  
  59. # instead of the default port, open additional ports separated by
  60. # spaces when interface-automatic is enabled, by listing them here.
  61. # interface-automatic-ports: ""
  62.  
  63. # port to answer queries from
  64. # port: 53
  65.  
  66. # specify the interfaces to send outgoing queries to authoritative
  67. # server from by ip-address. If none, the default (all) interface
  68. # is used. Specify every interface on a 'outgoing-interface:' line.
  69. # outgoing-interface: 192.0.2.153
  70. # outgoing-interface: 2001:DB8::5
  71. # outgoing-interface: 2001:DB8::6
  72.  
  73. # Specify a netblock to use remainder 64 bits as random bits for
  74. # upstream queries. Uses freebind option (Linux).
  75. # outgoing-interface: 2001:DB8::/64
  76. # Also (Linux:) ip -6 addr add 2001:db8::/64 dev lo
  77. # And: ip -6 route add local 2001:db8::/64 dev lo
  78. # And set prefer-ip6: yes to use the ip6 randomness from a netblock.
  79. # Set this to yes to prefer ipv6 upstream servers over ipv4.
  80. # prefer-ip6: no
  81.  
  82. # Prefer ipv4 upstream servers, even if ipv6 is available.
  83. # prefer-ip4: no
  84.  
  85. # number of ports to allocate per thread, determines the size of the
  86. # port range that can be open simultaneously. About double the
  87. # num-queries-per-thread, or, use as many as the OS will allow you.
  88. # outgoing-range: 4096
  89.  
  90. # permit Unbound to use this port number or port range for
  91. # making outgoing queries, using an outgoing interface.
  92. # outgoing-port-permit: 32768
  93.  
  94. # deny Unbound the use this of port number or port range for
  95. # making outgoing queries, using an outgoing interface.
  96. # Use this to make sure Unbound does not grab a UDP port that some
  97. # other server on this computer needs. The default is to avoid
  98. # IANA-assigned port numbers.
  99. # If multiple outgoing-port-permit and outgoing-port-avoid options
  100. # are present, they are processed in order.
  101. # outgoing-port-avoid: "3200-3208"
  102.  
  103. # number of outgoing simultaneous tcp buffers to hold per thread.
  104. # outgoing-num-tcp: 10
  105.  
  106. # number of incoming simultaneous tcp buffers to hold per thread.
  107. # incoming-num-tcp: 10
  108.  
  109. # buffer size for UDP port 53 incoming (SO_RCVBUF socket option).
  110. # 0 is system default. Use 4m to catch query spikes for busy servers.
  111. # so-rcvbuf: 0
  112.  
  113. # buffer size for UDP port 53 outgoing (SO_SNDBUF socket option).
  114. # 0 is system default. Use 4m to handle spikes on very busy servers.
  115. # so-sndbuf: 0
  116.  
  117. # use SO_REUSEPORT to distribute queries over threads.
  118. # at extreme load it could be better to turn it off to distribute even.
  119. # so-reuseport: yes
  120.  
  121. # use IP_TRANSPARENT so the interface: addresses can be non-local
  122. # and you can config non-existing IPs that are going to work later on
  123. # (uses IP_BINDANY on FreeBSD).
  124. # ip-transparent: no
  125.  
  126. # use IP_FREEBIND so the interface: addresses can be non-local
  127. # and you can bind to nonexisting IPs and interfaces that are down.
  128. # Linux only. On Linux you also have ip-transparent that is similar.
  129. # ip-freebind: no
  130.  
  131. # the value of the Differentiated Services Codepoint (DSCP)
  132. # in the differentiated services field (DS) of the outgoing
  133. # IP packets
  134. # ip-dscp: 0
  135.  
  136. # EDNS reassembly buffer to advertise to UDP peers (the actual buffer
  137. # is set with msg-buffer-size).
  138. # edns-buffer-size: 1232
  139.  
  140. # Maximum UDP response size (not applied to TCP response).
  141. # Suggested values are 512 to 4096. Default is 4096. 65536 disables it.
  142. # max-udp-size: 4096
  143.  
  144. # max memory to use for stream(tcp and tls) waiting result buffers.
  145. # stream-wait-size: 4m
  146.  
  147. # buffer size for handling DNS data. No messages larger than this
  148. # size can be sent or received, by UDP or TCP. In bytes.
  149. # msg-buffer-size: 65552
  150.  
  151. # the amount of memory to use for the message cache.
  152. # plain value in bytes or you can append k, m or G. default is "4Mb".
  153. # msg-cache-size: 4m
  154.  
  155. # the number of slabs to use for the message cache.
  156. # the number of slabs must be a power of 2.
  157. # more slabs reduce lock contention, but fragment memory usage.
  158. # msg-cache-slabs: 4
  159.  
  160. # the number of queries that a thread gets to service.
  161. # num-queries-per-thread: 1024
  162.  
  163. # if very busy, 50% queries run to completion, 50% get timeout in msec
  164. # jostle-timeout: 200
  165.  
  166. # msec to wait before close of port on timeout UDP. 0 disables.
  167. # delay-close: 0
  168.  
  169. # perform connect for UDP sockets to mitigate ICMP side channel.
  170. # udp-connect: yes
  171.  
  172. # The number of retries, per upstream nameserver in a delegation, when
  173. # a throwaway response (also timeouts) is received.
  174. # outbound-msg-retry: 5
  175.  
  176. # msec for waiting for an unknown server to reply. Increase if you
  177. # are behind a slow satellite link, to eg. 1128.
  178. # unknown-server-time-limit: 376
  179.  
  180. # the amount of memory to use for the RRset cache.
  181. # plain value in bytes or you can append k, m or G. default is "4Mb".
  182. # rrset-cache-size: 4m
  183.  
  184. # the number of slabs to use for the RRset cache.
  185. # the number of slabs must be a power of 2.
  186. # more slabs reduce lock contention, but fragment memory usage.
  187. # rrset-cache-slabs: 4
  188.  
  189. # the time to live (TTL) value lower bound, in seconds. Default 0.
  190. # If more than an hour could easily give trouble due to stale data.
  191. # cache-min-ttl: 0
  192.  
  193. # the time to live (TTL) value cap for RRsets and messages in the
  194. # cache. Items are not cached for longer. In seconds.
  195. # cache-max-ttl: 86400
  196.  
  197. # the time to live (TTL) value cap for negative responses in the cache
  198. # cache-max-negative-ttl: 3600
  199.  
  200. # the time to live (TTL) value for cached roundtrip times, lameness and
  201. # EDNS version information for hosts. In seconds.
  202. # infra-host-ttl: 900
  203.  
  204. # minimum wait time for responses, increase if uplink is long. In msec.
  205. # infra-cache-min-rtt: 50
  206.  
  207. # maximum wait time for responses. In msec.
  208. # infra-cache-max-rtt: 120000
  209.  
  210. # enable to make server probe down hosts more frequently.
  211. # infra-keep-probing: no
  212.  
  213. # the number of slabs to use for the Infrastructure cache.
  214. # the number of slabs must be a power of 2.
  215. # more slabs reduce lock contention, but fragment memory usage.
  216. # infra-cache-slabs: 4
  217.  
  218. # the maximum number of hosts that are cached (roundtrip, EDNS, lame).
  219. # infra-cache-numhosts: 10000
  220.  
  221. # define a number of tags here, use with local-zone, access-control,
  222. # interface-*.
  223. # repeat the define-tag statement to add additional tags.
  224. # define-tag: "tag1 tag2 tag3"
  225.  
  226. # Enable IPv4, "yes" or "no".
  227. # do-ip4: yes
  228.  
  229. # Enable IPv6, "yes" or "no".
  230. # do-ip6: yes
  231.  
  232. # Enable UDP, "yes" or "no".
  233. # do-udp: yes
  234.  
  235. # Enable TCP, "yes" or "no".
  236. # do-tcp: yes
  237.  
  238. # upstream connections use TCP only (and no UDP), "yes" or "no"
  239. # useful for tunneling scenarios, default no.
  240. # tcp-upstream: no
  241.  
  242. # upstream connections also use UDP (even if do-udp is no).
  243. # useful if if you want UDP upstream, but don't provide UDP downstream.
  244. # udp-upstream-without-downstream: no
  245.  
  246. # Maximum segment size (MSS) of TCP socket on which the server
  247. # responds to queries. Default is 0, system default MSS.
  248. # tcp-mss: 0
  249.  
  250. # Maximum segment size (MSS) of TCP socket for outgoing queries.
  251. # Default is 0, system default MSS.
  252. # outgoing-tcp-mss: 0
  253.  
  254. # Idle TCP timeout, connection closed in milliseconds
  255. # tcp-idle-timeout: 30000
  256.  
  257. # Enable EDNS TCP keepalive option.
  258. # edns-tcp-keepalive: no
  259.  
  260. # Timeout for EDNS TCP keepalive, in msec.
  261. # edns-tcp-keepalive-timeout: 120000
  262.  
  263. # Use systemd socket activation for UDP, TCP, and control sockets.
  264. # use-systemd: no
  265.  
  266. # Detach from the terminal, run in background, "yes" or "no".
  267. # Set the value to "no" when Unbound runs as systemd service.
  268. # do-daemonize: yes
  269.  
  270. # control which clients are allowed to make (recursive) queries
  271. # to this server. Specify classless netblocks with /size and action.
  272. # By default everything is refused, except for localhost.
  273. # Choose deny (drop message), refuse (polite error reply),
  274. # allow (recursive ok), allow_setrd (recursive ok, rd bit is forced on),
  275. # allow_snoop (recursive and nonrecursive ok)
  276. # deny_non_local (drop queries unless can be answered from local-data)
  277. # refuse_non_local (like deny_non_local but polite error reply).
  278. # access-control: 127.0.0.0/8 allow
  279. # access-control: ::1 allow
  280. # access-control: ::ffff:127.0.0.1 allow
  281.  
  282. # tag access-control with list of tags (in "" with spaces between)
  283. # Clients using this access control element use localzones that
  284. # are tagged with one of these tags.
  285. # access-control-tag: 192.0.2.0/24 "tag2 tag3"
  286.  
  287. # set action for particular tag for given access control element.
  288. # if you have multiple tag values, the tag used to lookup the action
  289. # is the first tag match between access-control-tag and local-zone-tag
  290. # where "first" comes from the order of the define-tag values.
  291. # access-control-tag-action: 192.0.2.0/24 tag3 refuse
  292.  
  293. # set redirect data for particular tag for access control element
  294. # access-control-tag-data: 192.0.2.0/24 tag2 "A 127.0.0.1"
  295.  
  296. # Set view for access control element
  297. # access-control-view: 192.0.2.0/24 viewname
  298.  
  299. # Similar to 'access-control:' but for interfaces.
  300. # Control which listening interfaces are allowed to accept (recursive)
  301. # queries for this server.
  302. # The specified interfaces should be the same as the ones specified in
  303. # 'interface:' followed by the action.
  304. # The actions are the same as 'access-control:' above.
  305. # By default all the interfaces configured are refused.
  306. # Note: any 'access-control*:' setting overrides all 'interface-*:'
  307. # settings for targeted clients.
  308. # interface-action: 192.0.2.153 allow
  309. # interface-action: 192.0.2.154 allow
  310. # interface-action: 192.0.2.154@5003 allow
  311. # interface-action: 2001:DB8::5 allow
  312. # interface-action: eth0@5003 allow
  313.  
  314. # Similar to 'access-control-tag:' but for interfaces.
  315. # Tag interfaces with a list of tags (in "" with spaces between).
  316. # Interfaces using these tags use localzones that are tagged with one
  317. # of these tags.
  318. # The specified interfaces should be the same as the ones specified in
  319. # 'interface:' followed by the list of tags.
  320. # Note: any 'access-control*:' setting overrides all 'interface-*:'
  321. # settings for targeted clients.
  322. # interface-tag: eth0@5003 "tag2 tag3"
  323.  
  324. # Similar to 'access-control-tag-action:' but for interfaces.
  325. # Set action for particular tag for a given interface element.
  326. # If you have multiple tag values, the tag used to lookup the action
  327. # is the first tag match between interface-tag and local-zone-tag
  328. # where "first" comes from the order of the define-tag values.
  329. # The specified interfaces should be the same as the ones specified in
  330. # 'interface:' followed by the tag and action.
  331. # Note: any 'access-control*:' setting overrides all 'interface-*:'
  332. # settings for targeted clients.
  333. # interface-tag-action: eth0@5003 tag3 refuse
  334.  
  335. # Similar to 'access-control-tag-data:' but for interfaces.
  336. # Set redirect data for a particular tag for an interface element.
  337. # The specified interfaces should be the same as the ones specified in
  338. # 'interface:' followed by the tag and the redirect data.
  339. # Note: any 'access-control*:' setting overrides all 'interface-*:'
  340. # settings for targeted clients.
  341. # interface-tag-data: eth0@5003 tag2 "A 127.0.0.1"
  342.  
  343. # Similar to 'access-control-view:' but for interfaces.
  344. # Set view for an interface element.
  345. # The specified interfaces should be the same as the ones specified in
  346. # 'interface:' followed by the view name.
  347. # Note: any 'access-control*:' setting overrides all 'interface-*:'
  348. # settings for targeted clients.
  349. # interface-view: eth0@5003 viewname
  350.  
  351. # if given, a chroot(2) is done to the given directory.
  352. # i.e. you can chroot to the working directory, for example,
  353. # for extra security, but make sure all files are in that directory.
  354. #
  355. # If chroot is enabled, you should pass the configfile (from the
  356. # commandline) as a full path from the original root. After the
  357. # chroot has been performed the now defunct portion of the config
  358. # file path is removed to be able to reread the config after a reload.
  359. #
  360. # All other file paths (working dir, logfile, roothints, and
  361. # key files) can be specified in several ways:
  362. # o as an absolute path relative to the new root.
  363. # o as a relative path to the working directory.
  364. # o as an absolute path relative to the original root.
  365. # In the last case the path is adjusted to remove the unused portion.
  366. #
  367. # The pid file can be absolute and outside of the chroot, it is
  368. # written just prior to performing the chroot and dropping permissions.
  369. #
  370. # Additionally, Unbound may need to access /dev/urandom (for entropy).
  371. # How to do this is specific to your OS.
  372. #
  373. # If you give "" no chroot is performed. The path must not end in a /.
  374. # chroot: "/usr/local/etc/unbound"
  375.  
  376. # if given, user privileges are dropped (after binding port),
  377. # and the given username is assumed. Default is user "unbound".
  378. # If you give "" no privileges are dropped.
  379. # username: "unbound"
  380.  
  381. # the working directory. The relative files in this config are
  382. # relative to this directory. If you give "" the working directory
  383. # is not changed.
  384. # If you give a server: directory: dir before include: file statements
  385. # then those includes can be relative to the working directory.
  386. # directory: "/usr/local/etc/unbound"
  387.  
  388. # the log file, "" means log to stderr.
  389. # Use of this option sets use-syslog to "no".
  390. # logfile: ""
  391.  
  392. # Log to syslog(3) if yes. The log facility LOG_DAEMON is used to
  393. # log to. If yes, it overrides the logfile.
  394. # use-syslog: yes
  395.  
  396. # Log identity to report. if empty, defaults to the name of argv[0]
  397. # (usually "unbound").
  398. # log-identity: ""
  399.  
  400. # print UTC timestamp in ascii to logfile, default is epoch in seconds.
  401. # log-time-ascii: no
  402.  
  403. # print one line with time, IP, name, type, class for every query.
  404. # log-queries: no
  405.  
  406. # print one line per reply, with time, IP, name, type, class, rcode,
  407. # timetoresolve, fromcache and responsesize.
  408. # log-replies: no
  409.  
  410. # log with tag 'query' and 'reply' instead of 'info' for
  411. # filtering log-queries and log-replies from the log.
  412. # log-tag-queryreply: no
  413.  
  414. # log the local-zone actions, like local-zone type inform is enabled
  415. # also for the other local zone types.
  416. # log-local-actions: no
  417.  
  418. # print log lines that say why queries return SERVFAIL to clients.
  419. # log-servfail: no
  420.  
  421. # the pid file. Can be an absolute path outside of chroot/work dir.
  422. # pidfile: "/usr/local/etc/unbound/unbound.pid"
  423.  
  424. # file to read root hints from.
  425. # get one from https://www.internic.net/domain/named.cache
  426. # root-hints: ""
  427.  
  428. # enable to not answer id.server and hostname.bind queries.
  429. # hide-identity: no
  430.  
  431. # enable to not answer version.server and version.bind queries.
  432. # hide-version: no
  433.  
  434. # enable to not answer trustanchor.unbound queries.
  435. # hide-trustanchor: no
  436.  
  437. # enable to not set the User-Agent HTTP header.
  438. # hide-http-user-agent: no
  439.  
  440. # the identity to report. Leave "" or default to return hostname.
  441. # identity: ""
  442.  
  443. # the version to report. Leave "" or default to return package version.
  444. # version: ""
  445.  
  446. # NSID identity (hex string, or "ascii_somestring"). default disabled.
  447. # nsid: "aabbccdd"
  448.  
  449. # User-Agent HTTP header to use. Leave "" or default to use package name
  450. # and version.
  451. # http-user-agent: ""
  452.  
  453. # the target fetch policy.
  454. # series of integers describing the policy per dependency depth.
  455. # The number of values in the list determines the maximum dependency
  456. # depth the recursor will pursue before giving up. Each integer means:
  457. # -1 : fetch all targets opportunistically,
  458. # 0: fetch on demand,
  459. # positive value: fetch that many targets opportunistically.
  460. # Enclose the list of numbers between quotes ("").
  461. # target-fetch-policy: "3 2 1 0 0"
  462.  
  463. # Harden against very small EDNS buffer sizes.
  464. # harden-short-bufsize: yes
  465.  
  466. # Harden against unseemly large queries.
  467. # harden-large-queries: no
  468.  
  469. # Harden against out of zone rrsets, to avoid spoofing attempts.
  470. # harden-glue: yes
  471.  
  472. # Harden against receiving dnssec-stripped data. If you turn it
  473. # off, failing to validate dnskey data for a trustanchor will
  474. # trigger insecure mode for that zone (like without a trustanchor).
  475. # Default on, which insists on dnssec data for trust-anchored zones.
  476. # harden-dnssec-stripped: yes
  477.  
  478. # Harden against queries that fall under dnssec-signed nxdomain names.
  479. # harden-below-nxdomain: yes
  480.  
  481. # Harden the referral path by performing additional queries for
  482. # infrastructure data. Validates the replies (if possible).
  483. # Default off, because the lookups burden the server. Experimental
  484. # implementation of draft-wijngaards-dnsext-resolver-side-mitigation.
  485. # harden-referral-path: no
  486.  
  487. # Harden against algorithm downgrade when multiple algorithms are
  488. # advertised in the DS record. If no, allows the weakest algorithm
  489. # to validate the zone.
  490. # harden-algo-downgrade: no
  491.  
  492. # Sent minimum amount of information to upstream servers to enhance
  493. # privacy. Only sent minimum required labels of the QNAME and set QTYPE
  494. # to A when possible.
  495. # qname-minimisation: yes
  496.  
  497. # QNAME minimisation in strict mode. Do not fall-back to sending full
  498. # QNAME to potentially broken nameservers. A lot of domains will not be
  499. # resolvable when this option in enabled.
  500. # This option only has effect when qname-minimisation is enabled.
  501. # qname-minimisation-strict: no
  502.  
  503. # Aggressive NSEC uses the DNSSEC NSEC chain to synthesize NXDOMAIN
  504. # and other denials, using information from previous NXDOMAINs answers.
  505. # aggressive-nsec: yes
  506.  
  507. # Use 0x20-encoded random bits in the query to foil spoof attempts.
  508. # This feature is an experimental implementation of draft dns-0x20.
  509. # use-caps-for-id: no
  510.  
  511. # Domains (and domains in them) without support for dns-0x20 and
  512. # the fallback fails because they keep sending different answers.
  513. # caps-exempt: "licdn.com"
  514. # caps-exempt: "senderbase.org"
  515.  
  516. # Enforce privacy of these addresses. Strips them away from answers.
  517. # It may cause DNSSEC validation to additionally mark it as bogus.
  518. # Protects against 'DNS Rebinding' (uses browser as network proxy).
  519. # Only 'private-domain' and 'local-data' names are allowed to have
  520. # these private addresses. No default.
  521. # private-address: 10.0.0.0/8
  522. # private-address: 172.16.0.0/12
  523. # private-address: 192.168.0.0/16
  524. # private-address: 169.254.0.0/16
  525. # private-address: fd00::/8
  526. # private-address: fe80::/10
  527. # private-address: ::ffff:0:0/96
  528.  
  529. # Allow the domain (and its subdomains) to contain private addresses.
  530. # local-data statements are allowed to contain private addresses too.
  531. # private-domain: "example.com"
  532.  
  533. # If nonzero, unwanted replies are not only reported in statistics,
  534. # but also a running total is kept per thread. If it reaches the
  535. # threshold, a warning is printed and a defensive action is taken,
  536. # the cache is cleared to flush potential poison out of it.
  537. # A suggested value is 10000000, the default is 0 (turned off).
  538. # unwanted-reply-threshold: 0
  539.  
  540. # Do not query the following addresses. No DNS queries are sent there.
  541. # List one address per entry. List classless netblocks with /size,
  542. # do-not-query-address: 127.0.0.1/8
  543. # do-not-query-address: ::1
  544.  
  545. # if yes, the above default do-not-query-address entries are present.
  546. # if no, localhost can be queried (for testing and debugging).
  547. # do-not-query-localhost: yes
  548.  
  549. # if yes, perform prefetching of almost expired message cache entries.
  550. # prefetch: no
  551.  
  552. # if yes, perform key lookups adjacent to normal lookups.
  553. # prefetch-key: no
  554.  
  555. # deny queries of type ANY with an empty response.
  556. # deny-any: no
  557.  
  558. # if yes, Unbound rotates RRSet order in response.
  559. # rrset-roundrobin: yes
  560.  
  561. # if yes, Unbound doesn't insert authority/additional sections
  562. # into response messages when those sections are not required.
  563. # minimal-responses: yes
  564.  
  565. # true to disable DNSSEC lameness check in iterator.
  566. # disable-dnssec-lame-check: no
  567.  
  568. # module configuration of the server. A string with identifiers
  569. # separated by spaces. Syntax: "[dns64] [validator] iterator"
  570. # most modules have to be listed at the beginning of the line,
  571. # except cachedb(just before iterator), and python (at the beginning,
  572. # or, just before the iterator).
  573. # module-config: "validator iterator"
  574.  
  575. # File with trusted keys, kept uptodate using RFC5011 probes,
  576. # initial file like trust-anchor-file, then it stores metadata.
  577. # Use several entries, one per domain name, to track multiple zones.
  578. #
  579. # If you want to perform DNSSEC validation, run unbound-anchor before
  580. # you start Unbound (i.e. in the system boot scripts).
  581. # And then enable the auto-trust-anchor-file config item.
  582. # Please note usage of unbound-anchor root anchor is at your own risk
  583. # and under the terms of our LICENSE (see that file in the source).
  584. # auto-trust-anchor-file: "/usr/local/etc/unbound/root.key"
  585.  
  586. # trust anchor signaling sends a RFC8145 key tag query after priming.
  587. # trust-anchor-signaling: yes
  588.  
  589. # Root key trust anchor sentinel (draft-ietf-dnsop-kskroll-sentinel)
  590. # root-key-sentinel: yes
  591.  
  592. # File with trusted keys for validation. Specify more than one file
  593. # with several entries, one file per entry.
  594. # Zone file format, with DS and DNSKEY entries.
  595. # Note this gets out of date, use auto-trust-anchor-file please.
  596. # trust-anchor-file: ""
  597.  
  598. # Trusted key for validation. DS or DNSKEY. specify the RR on a
  599. # single line, surrounded by "". TTL is ignored. class is IN default.
  600. # Note this gets out of date, use auto-trust-anchor-file please.
  601. # (These examples are from August 2007 and may not be valid anymore).
  602. # trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ=="
  603. # trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A"
  604.  
  605. # File with trusted keys for validation. Specify more than one file
  606. # with several entries, one file per entry. Like trust-anchor-file
  607. # but has a different file format. Format is BIND-9 style format,
  608. # the trusted-keys { name flag proto algo "key"; }; clauses are read.
  609. # you need external update procedures to track changes in keys.
  610. # trusted-keys-file: ""
  611.  
  612. # Ignore chain of trust. Domain is treated as insecure.
  613. # domain-insecure: "example.com"
  614.  
  615. # Override the date for validation with a specific fixed date.
  616. # Do not set this unless you are debugging signature inception
  617. # and expiration. "" or "0" turns the feature off. -1 ignores date.
  618. # val-override-date: ""
  619.  
  620. # The time to live for bogus data, rrsets and messages. This avoids
  621. # some of the revalidation, until the time interval expires. in secs.
  622. # val-bogus-ttl: 60
  623.  
  624. # The signature inception and expiration dates are allowed to be off
  625. # by 10% of the signature lifetime (expir-incep) from our local clock.
  626. # This leeway is capped with a minimum and a maximum. In seconds.
  627. # val-sig-skew-min: 3600
  628. # val-sig-skew-max: 86400
  629.  
  630. # The maximum number the validator should restart validation with
  631. # another authority in case of failed validation.
  632. # val-max-restart: 5
  633.  
  634. # Should additional section of secure message also be kept clean of
  635. # unsecure data. Useful to shield the users of this validator from
  636. # potential bogus data in the additional section. All unsigned data
  637. # in the additional section is removed from secure messages.
  638. # val-clean-additional: yes
  639.  
  640. # Turn permissive mode on to permit bogus messages. Thus, messages
  641. # for which security checks failed will be returned to clients,
  642. # instead of SERVFAIL. It still performs the security checks, which
  643. # result in interesting log files and possibly the AD bit in
  644. # replies if the message is found secure. The default is off.
  645. # val-permissive-mode: no
  646.  
  647. # Ignore the CD flag in incoming queries and refuse them bogus data.
  648. # Enable it if the only clients of Unbound are legacy servers (w2008)
  649. # that set CD but cannot validate themselves.
  650. # ignore-cd-flag: no
  651.  
  652. # Serve expired responses from cache, with serve-expired-reply-ttl in
  653. # the response, and then attempt to fetch the data afresh.
  654. # serve-expired: no
  655. #
  656. # Limit serving of expired responses to configured seconds after
  657. # expiration. 0 disables the limit.
  658. # serve-expired-ttl: 0
  659. #
  660. # Set the TTL of expired records to the serve-expired-ttl value after a
  661. # failed attempt to retrieve the record from upstream. This makes sure
  662. # that the expired records will be served as long as there are queries
  663. # for it.
  664. # serve-expired-ttl-reset: no
  665. #
  666. # TTL value to use when replying with expired data.
  667. # serve-expired-reply-ttl: 30
  668. #
  669. # Time in milliseconds before replying to the client with expired data.
  670. # This essentially enables the serve-stale behavior as specified in
  671. # RFC 8767 that first tries to resolve before
  672. # immediately responding with expired data. 0 disables this behavior.
  673. # A recommended value is 1800.
  674. # serve-expired-client-timeout: 0
  675.  
  676. # Return the original TTL as received from the upstream name server rather
  677. # than the decrementing TTL as stored in the cache. Enabling this feature
  678. # does not impact cache expiry, it only changes the TTL Unbound embeds in
  679. # responses to queries. Note that enabling this feature implicitly disables
  680. # enforcement of the configured minimum and maximum TTL.
  681. # serve-original-ttl: no
  682.  
  683. # Have the validator log failed validations for your diagnosis.
  684. # 0: off. 1: A line per failed user query. 2: With reason and bad IP.
  685. # val-log-level: 0
  686.  
  687. # It is possible to configure NSEC3 maximum iteration counts per
  688. # keysize. Keep this table very short, as linear search is done.
  689. # A message with an NSEC3 with larger count is marked insecure.
  690. # List in ascending order the keysize and count values.
  691. # val-nsec3-keysize-iterations: "1024 150 2048 150 4096 150"
  692.  
  693. # if enabled, ZONEMD verification failures do not block the zone.
  694. # zonemd-permissive-mode: no
  695.  
  696. # instruct the auto-trust-anchor-file probing to add anchors after ttl.
  697. # add-holddown: 2592000 # 30 days
  698.  
  699. # instruct the auto-trust-anchor-file probing to del anchors after ttl.
  700. # del-holddown: 2592000 # 30 days
  701.  
  702. # auto-trust-anchor-file probing removes missing anchors after ttl.
  703. # If the value 0 is given, missing anchors are not removed.
  704. # keep-missing: 31622400 # 366 days
  705.  
  706. # debug option that allows very small holddown times for key rollover,
  707. # otherwise the RFC mandates probe intervals must be at least 1 hour.
  708. # permit-small-holddown: no
  709.  
  710. # the amount of memory to use for the key cache.
  711. # plain value in bytes or you can append k, m or G. default is "4Mb".
  712. # key-cache-size: 4m
  713.  
  714. # the number of slabs to use for the key cache.
  715. # the number of slabs must be a power of 2.
  716. # more slabs reduce lock contention, but fragment memory usage.
  717. # key-cache-slabs: 4
  718.  
  719. # the amount of memory to use for the negative cache.
  720. # plain value in bytes or you can append k, m or G. default is "1Mb".
  721. # neg-cache-size: 1m
  722.  
  723. # By default, for a number of zones a small default 'nothing here'
  724. # reply is built-in. Query traffic is thus blocked. If you
  725. # wish to serve such zone you can unblock them by uncommenting one
  726. # of the nodefault statements below.
  727. # You may also have to use domain-insecure: zone to make DNSSEC work,
  728. # unless you have your own trust anchors for this zone.
  729. # local-zone: "localhost." nodefault
  730. # local-zone: "127.in-addr.arpa." nodefault
  731. # local-zone: "1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa." nodefault
  732. # local-zone: "home.arpa." nodefault
  733. # local-zone: "onion." nodefault
  734. # local-zone: "test." nodefault
  735. # local-zone: "invalid." nodefault
  736. # local-zone: "10.in-addr.arpa." nodefault
  737. # local-zone: "16.172.in-addr.arpa." nodefault
  738. # local-zone: "17.172.in-addr.arpa." nodefault
  739. # local-zone: "18.172.in-addr.arpa." nodefault
  740. # local-zone: "19.172.in-addr.arpa." nodefault
  741. # local-zone: "20.172.in-addr.arpa." nodefault
  742. # local-zone: "21.172.in-addr.arpa." nodefault
  743. # local-zone: "22.172.in-addr.arpa." nodefault
  744. # local-zone: "23.172.in-addr.arpa." nodefault
  745. # local-zone: "24.172.in-addr.arpa." nodefault
  746. # local-zone: "25.172.in-addr.arpa." nodefault
  747. # local-zone: "26.172.in-addr.arpa." nodefault
  748. # local-zone: "27.172.in-addr.arpa." nodefault
  749. # local-zone: "28.172.in-addr.arpa." nodefault
  750. # local-zone: "29.172.in-addr.arpa." nodefault
  751. # local-zone: "30.172.in-addr.arpa." nodefault
  752. # local-zone: "31.172.in-addr.arpa." nodefault
  753. # local-zone: "168.192.in-addr.arpa." nodefault
  754. # local-zone: "0.in-addr.arpa." nodefault
  755. # local-zone: "254.169.in-addr.arpa." nodefault
  756. # local-zone: "2.0.192.in-addr.arpa." nodefault
  757. # local-zone: "100.51.198.in-addr.arpa." nodefault
  758. # local-zone: "113.0.203.in-addr.arpa." nodefault
  759. # local-zone: "255.255.255.255.in-addr.arpa." nodefault
  760. # local-zone: "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa." nodefault
  761. # local-zone: "d.f.ip6.arpa." nodefault
  762. # local-zone: "8.e.f.ip6.arpa." nodefault
  763. # local-zone: "9.e.f.ip6.arpa." nodefault
  764. # local-zone: "a.e.f.ip6.arpa." nodefault
  765. # local-zone: "b.e.f.ip6.arpa." nodefault
  766. # local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault
  767. # And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa.
  768.  
  769. # Add example.com into ipset
  770. # local-zone: "example.com" ipset
  771.  
  772. # If Unbound is running service for the local host then it is useful
  773. # to perform lan-wide lookups to the upstream, and unblock the
  774. # long list of local-zones above. If this Unbound is a dns server
  775. # for a network of computers, disabled is better and stops information
  776. # leakage of local lan information.
  777. # unblock-lan-zones: no
  778.  
  779. # The insecure-lan-zones option disables validation for
  780. # these zones, as if they were all listed as domain-insecure.
  781. # insecure-lan-zones: no
  782.  
  783. # a number of locally served zones can be configured.
  784. # local-zone: <zone> <type>
  785. # local-data: "<resource record string>"
  786. # o deny serves local data (if any), else, drops queries.
  787. # o refuse serves local data (if any), else, replies with error.
  788. # o static serves local data, else, nxdomain or nodata answer.
  789. # o transparent gives local data, but resolves normally for other names
  790. # o redirect serves the zone data for any subdomain in the zone.
  791. # o nodefault can be used to normally resolve AS112 zones.
  792. # o typetransparent resolves normally for other types and other names
  793. # o inform acts like transparent, but logs client IP address
  794. # o inform_deny drops queries and logs client IP address
  795. # o inform_redirect redirects queries and logs client IP address
  796. # o always_transparent, always_refuse, always_nxdomain, always_nodata,
  797. # always_deny resolve in that way but ignore local data for
  798. # that name
  799. # o always_null returns 0.0.0.0 or ::0 for any name in the zone.
  800. # o noview breaks out of that view towards global local-zones.
  801. #
  802. # defaults are localhost address, reverse for 127.0.0.1 and ::1
  803. # and nxdomain for AS112 zones. If you configure one of these zones
  804. # the default content is omitted, or you can omit it with 'nodefault'.
  805. #
  806. # If you configure local-data without specifying local-zone, by
  807. # default a transparent local-zone is created for the data.
  808. #
  809. # You can add locally served data with
  810. # local-zone: "local." static
  811. # local-data: "mycomputer.local. IN A 192.0.2.51"
  812. # local-data: 'mytext.local TXT "content of text record"'
  813. #
  814. # You can override certain queries with
  815. # local-data: "adserver.example.com A 127.0.0.1"
  816. #
  817. # You can redirect a domain to a fixed address with
  818. # (this makes example.com, www.example.com, etc, all go to 192.0.2.3)
  819. # local-zone: "example.com" redirect
  820. # local-data: "example.com A 192.0.2.3"
  821. #
  822. # Shorthand to make PTR records, "IPv4 name" or "IPv6 name".
  823. # You can also add PTR records using local-data directly, but then
  824. # you need to do the reverse notation yourself.
  825. # local-data-ptr: "192.0.2.3 www.example.com"
  826.  
  827. # tag a localzone with a list of tag names (in "" with spaces between)
  828. # local-zone-tag: "example.com" "tag2 tag3"
  829.  
  830. # add a netblock specific override to a localzone, with zone type
  831. # local-zone-override: "example.com" 192.0.2.0/24 refuse
  832.  
  833. # service clients over TLS (on the TCP sockets) with plain DNS inside
  834. # the TLS stream, and over HTTPS using HTTP/2 as specified in RFC8484.
  835. # Give the certificate to use and private key.
  836. # default is "" (disabled). requires restart to take effect.
  837. # tls-service-key: "path/to/privatekeyfile.key"
  838. # tls-service-pem: "path/to/publiccertfile.pem"
  839. # tls-port: 853
  840. # https-port: 443
  841.  
  842. # cipher setting for TLSv1.2
  843. # tls-ciphers: "DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256"
  844. # cipher setting for TLSv1.3
  845. # tls-ciphersuites: "TLS_AES_128_GCM_SHA256:TLS_AES_128_CCM_8_SHA256:TLS_AES_128_CCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256"
  846.  
  847. # Pad responses to padded queries received over TLS
  848. # pad-responses: yes
  849.  
  850. # Padded responses will be padded to the closest multiple of this size.
  851. # pad-responses-block-size: 468
  852.  
  853. # Use the SNI extension for TLS connections. Default is yes.
  854. # Changing the value requires a reload.
  855. # tls-use-sni: yes
  856.  
  857. # Add the secret file for TLS Session Ticket.
  858. # Secret file must be 80 bytes of random data.
  859. # First key use to encrypt and decrypt TLS session tickets.
  860. # Other keys use to decrypt only.
  861. # requires restart to take effect.
  862. # tls-session-ticket-keys: "path/to/secret_file1"
  863. # tls-session-ticket-keys: "path/to/secret_file2"
  864.  
  865. # request upstream over TLS (with plain DNS inside the TLS stream).
  866. # Default is no. Can be turned on and off with unbound-control.
  867. # tls-upstream: no
  868.  
  869. # Certificates used to authenticate connections made upstream.
  870. # tls-cert-bundle: ""
  871.  
  872. # Add system certs to the cert bundle, from the Windows Cert Store
  873. # tls-win-cert: no
  874. # and on other systems, the default openssl certificates
  875. # tls-system-cert: no
  876.  
  877. # Pad queries over TLS upstreams
  878. # pad-queries: yes
  879.  
  880. # Padded queries will be padded to the closest multiple of this size.
  881. # pad-queries-block-size: 128
  882.  
  883. # Also serve tls on these port numbers (eg. 443, ...), by listing
  884. # tls-additional-port: portno for each of the port numbers.
  885.  
  886. # HTTP endpoint to provide DNS-over-HTTPS service on.
  887. # http-endpoint: "/dns-query"
  888.  
  889. # HTTP/2 SETTINGS_MAX_CONCURRENT_STREAMS value to use.
  890. # http-max-streams: 100
  891.  
  892. # Maximum number of bytes used for all HTTP/2 query buffers.
  893. # http-query-buffer-size: 4m
  894.  
  895. # Maximum number of bytes used for all HTTP/2 response buffers.
  896. # http-response-buffer-size: 4m
  897.  
  898. # Set TCP_NODELAY socket option on sockets used for DNS-over-HTTPS
  899. # service.
  900. # http-nodelay: yes
  901.  
  902. # Disable TLS for DNS-over-HTTP downstream service.
  903. # http-notls-downstream: no
  904.  
  905. # The interfaces that use these listed port numbers will support and
  906. # expect PROXYv2. For UDP and TCP/TLS interfaces.
  907. # proxy-protocol-port: portno for each of the port numbers.
  908.  
  909. # DNS64 prefix. Must be specified when DNS64 is use.
  910. # Enable dns64 in module-config. Used to synthesize IPv6 from IPv4.
  911. # dns64-prefix: 64:ff9b::0/96
  912.  
  913. # DNS64 ignore AAAA records for these domains and use A instead.
  914. # dns64-ignore-aaaa: "example.com"
  915.  
  916. # ratelimit for uncached, new queries, this limits recursion effort.
  917. # ratelimiting is experimental, and may help against randomqueryflood.
  918. # if 0(default) it is disabled, otherwise state qps allowed per zone.
  919. # ratelimit: 0
  920.  
  921. # ratelimits are tracked in a cache, size in bytes of cache (or k,m).
  922. # ratelimit-size: 4m
  923. # ratelimit cache slabs, reduces lock contention if equal to cpucount.
  924. # ratelimit-slabs: 4
  925.  
  926. # 0 blocks when ratelimited, otherwise let 1/xth traffic through
  927. # ratelimit-factor: 10
  928.  
  929. # Aggressive rate limit when the limit is reached and until demand has
  930. # decreased in a 2 second rate window.
  931. # ratelimit-backoff: no
  932.  
  933. # override the ratelimit for a specific domain name.
  934. # give this setting multiple times to have multiple overrides.
  935. # ratelimit-for-domain: example.com 1000
  936. # override the ratelimits for all domains below a domain name
  937. # can give this multiple times, the name closest to the zone is used.
  938. # ratelimit-below-domain: com 1000
  939.  
  940. # global query ratelimit for all ip addresses.
  941. # feature is experimental.
  942. # if 0(default) it is disabled, otherwise states qps allowed per ip address
  943. # ip-ratelimit: 0
  944.  
  945. # ip ratelimits are tracked in a cache, size in bytes of cache (or k,m).
  946. # ip-ratelimit-size: 4m
  947. # ip ratelimit cache slabs, reduces lock contention if equal to cpucount.
  948. # ip-ratelimit-slabs: 4
  949.  
  950. # 0 blocks when ip is ratelimited, otherwise let 1/xth traffic through
  951. # ip-ratelimit-factor: 10
  952.  
  953. # Aggressive rate limit when the limit is reached and until demand has
  954. # decreased in a 2 second rate window.
  955. # ip-ratelimit-backoff: no
  956.  
  957. # Limit the number of connections simultaneous from a netblock
  958. # tcp-connection-limit: 192.0.2.0/24 12
  959.  
  960. # select from the fastest servers this many times out of 1000. 0 means
  961. # the fast server select is disabled. prefetches are not sped up.
  962. # fast-server-permil: 0
  963. # the number of servers that will be used in the fast server selection.
  964. # fast-server-num: 3
  965.  
  966. # Enable to attach Extended DNS Error codes (RFC8914) to responses.
  967. # ede: no
  968.  
  969. # Enable to attach an Extended DNS Error (RFC8914) Code 3 - Stale
  970. # Answer as EDNS0 option to expired responses.
  971. # Note that the ede option above needs to be enabled for this to work.
  972. # ede-serve-expired: no
  973.  
  974. # Specific options for ipsecmod. Unbound needs to be configured with
  975. # --enable-ipsecmod for these to take effect.
  976. #
  977. # Enable or disable ipsecmod (it still needs to be defined in
  978. # module-config above). Can be used when ipsecmod needs to be
  979. # enabled/disabled via remote-control(below).
  980. # ipsecmod-enabled: yes
  981. #
  982. # Path to executable external hook. It must be defined when ipsecmod is
  983. # listed in module-config (above).
  984. # ipsecmod-hook: "./my_executable"
  985. #
  986. # When enabled Unbound will reply with SERVFAIL if the return value of
  987. # the ipsecmod-hook is not 0.
  988. # ipsecmod-strict: no
  989. #
  990. # Maximum time to live (TTL) for cached A/AAAA records with IPSECKEY.
  991. # ipsecmod-max-ttl: 3600
  992. #
  993. # Reply with A/AAAA even if the relevant IPSECKEY is bogus. Mainly used for
  994. # testing.
  995. # ipsecmod-ignore-bogus: no
  996. #
  997. # Domains for which ipsecmod will be triggered. If not defined (default)
  998. # all domains are treated as being allowed.
  999. # ipsecmod-allow: "example.com"
  1000. # ipsecmod-allow: "nlnetlabs.nl"
  1001.  
  1002. # Timeout for REUSE entries in milliseconds.
  1003. # tcp-reuse-timeout: 60000
  1004. # Max number of queries on a reuse connection.
  1005. # max-reuse-tcp-queries: 200
  1006. # Timeout in milliseconds for TCP queries to auth servers.
  1007. # tcp-auth-query-timeout: 3000
  1008.  
  1009.  
  1010. # Python config section. To enable:
  1011. # o use --with-pythonmodule to configure before compiling.
  1012. # o list python in the module-config string (above) to enable.
  1013. # It can be at the start, it gets validated results, or just before
  1014. # the iterator and process before DNSSEC validation.
  1015. # o and give a python-script to run.
  1016. python:
  1017. # Script file to load
  1018. # python-script: "/usr/local/etc/unbound/ubmodule-tst.py"
  1019.  
  1020. # Dynamic library config section. To enable:
  1021. # o use --with-dynlibmodule to configure before compiling.
  1022. # o list dynlib in the module-config string (above) to enable.
  1023. # It can be placed anywhere, the dynlib module is only a very thin wrapper
  1024. # to load modules dynamically.
  1025. # o and give a dynlib-file to run. If more than one dynlib entry is listed in
  1026. # the module-config then you need one dynlib-file per instance.
  1027. dynlib:
  1028. # Script file to load
  1029. # dynlib-file: "/usr/local/etc/unbound/dynlib.so"
  1030.  
  1031. # Remote control config section.
  1032. remote-control:
  1033. # Enable remote control with unbound-control(8) here.
  1034. # set up the keys and certificates with unbound-control-setup.
  1035. # control-enable: no
  1036.  
  1037. # what interfaces are listened to for remote control.
  1038. # give 0.0.0.0 and ::0 to listen to all interfaces.
  1039. # set to an absolute path to use a unix local name pipe, certificates
  1040. # are not used for that, so key and cert files need not be present.
  1041. # control-interface: 127.0.0.1
  1042. # control-interface: ::1
  1043.  
  1044. # port number for remote control operations.
  1045. # control-port: 8953
  1046.  
  1047. # for localhost, you can disable use of TLS by setting this to "no"
  1048. # For local sockets this option is ignored, and TLS is not used.
  1049. # control-use-cert: "yes"
  1050.  
  1051. # Unbound server key file.
  1052. # server-key-file: "/usr/local/etc/unbound/unbound_server.key"
  1053.  
  1054. # Unbound server certificate file.
  1055. # server-cert-file: "/usr/local/etc/unbound/unbound_server.pem"
  1056.  
  1057. # unbound-control key file.
  1058. # control-key-file: "/usr/local/etc/unbound/unbound_control.key"
  1059.  
  1060. # unbound-control certificate file.
  1061. # control-cert-file: "/usr/local/etc/unbound/unbound_control.pem"
  1062.  
  1063. # Stub zones.
  1064. # Create entries like below, to make all queries for 'example.com' and
  1065. # 'example.org' go to the given list of nameservers. list zero or more
  1066. # nameservers by hostname or by ipaddress. If you set stub-prime to yes,
  1067. # the list is treated as priming hints (default is no).
  1068. # With stub-first yes, it attempts without the stub if it fails.
  1069. # Consider adding domain-insecure: name and local-zone: name nodefault
  1070. # to the server: section if the stub is a locally served zone.
  1071. # stub-zone:
  1072. # name: "example.com"
  1073. # stub-addr: 192.0.2.68
  1074. # stub-prime: no
  1075. # stub-first: no
  1076. # stub-tcp-upstream: no
  1077. # stub-tls-upstream: no
  1078. # stub-no-cache: no
  1079. # stub-zone:
  1080. # name: "example.org"
  1081. # stub-host: ns.example.com.
  1082.  
  1083. # Forward zones
  1084. # Create entries like below, to make all queries for 'example.com' and
  1085. # 'example.org' go to the given list of servers. These servers have to handle
  1086. # recursion to other nameservers. List zero or more nameservers by hostname
  1087. # or by ipaddress. Use an entry with name "." to forward all queries.
  1088. # If you enable forward-first, it attempts without the forward if it fails.
  1089. # forward-zone:
  1090. # name: "example.com"
  1091. # forward-addr: 192.0.2.68
  1092. # forward-addr: 192.0.2.73@5355 # forward to port 5355.
  1093. # forward-first: no
  1094. # forward-tcp-upstream: no
  1095. # forward-tls-upstream: no
  1096. # forward-no-cache: no
  1097. # forward-zone:
  1098. # name: "example.org"
  1099. # forward-host: fwd.example.com
  1100.  
  1101. # Authority zones
  1102. # The data for these zones is kept locally, from a file or downloaded.
  1103. # The data can be served to downstream clients, or used instead of the
  1104. # upstream (which saves a lookup to the upstream). The first example
  1105. # has a copy of the root for local usage. The second serves example.org
  1106. # authoritatively. zonefile: reads from file (and writes to it if you also
  1107. # download it), primary: fetches with AXFR and IXFR, or url to zonefile.
  1108. # With allow-notify: you can give additional (apart from primaries and urls)
  1109. # sources of notifies.
  1110. # auth-zone:
  1111. # name: "."
  1112. # primary: 199.9.14.201 # b.root-servers.net
  1113. # primary: 192.33.4.12 # c.root-servers.net
  1114. # primary: 199.7.91.13 # d.root-servers.net
  1115. # primary: 192.5.5.241 # f.root-servers.net
  1116. # primary: 192.112.36.4 # g.root-servers.net
  1117. # primary: 193.0.14.129 # k.root-servers.net
  1118. # primary: 192.0.47.132 # xfr.cjr.dns.icann.org
  1119. # primary: 192.0.32.132 # xfr.lax.dns.icann.org
  1120. # primary: 2001:500:200::b # b.root-servers.net
  1121. # primary: 2001:500:2::c # c.root-servers.net
  1122. # primary: 2001:500:2d::d # d.root-servers.net
  1123. # primary: 2001:500:2f::f # f.root-servers.net
  1124. # primary: 2001:500:12::d0d # g.root-servers.net
  1125. # primary: 2001:7fd::1 # k.root-servers.net
  1126. # primary: 2620:0:2830:202::132 # xfr.cjr.dns.icann.org
  1127. # primary: 2620:0:2d0:202::132 # xfr.lax.dns.icann.org
  1128. # fallback-enabled: yes
  1129. # for-downstream: no
  1130. # for-upstream: yes
  1131. # auth-zone:
  1132. # name: "example.org"
  1133. # for-downstream: yes
  1134. # for-upstream: yes
  1135. # zonemd-check: no
  1136. # zonemd-reject-absence: no
  1137. # zonefile: "example.org.zone"
  1138.  
  1139. # Views
  1140. # Create named views. Name must be unique. Map views to requests using
  1141. # the access-control-view option. Views can contain zero or more local-zone
  1142. # and local-data options. Options from matching views will override global
  1143. # options. Global options will be used if no matching view is found.
  1144. # With view-first yes, it will try to answer using the global local-zone and
  1145. # local-data elements if there is no view specific match.
  1146. # view:
  1147. # name: "viewname"
  1148. # local-zone: "example.com" redirect
  1149. # local-data: "example.com A 192.0.2.3"
  1150. # local-data-ptr: "192.0.2.3 www.example.com"
  1151. # view-first: no
  1152. # view:
  1153. # name: "anotherview"
  1154. # local-zone: "example.com" refuse
  1155.  
  1156. # DNSCrypt
  1157. # To enable, use --enable-dnscrypt to configure before compiling.
  1158. # Caveats:
  1159. # 1. the keys/certs cannot be produced by Unbound. You can use dnscrypt-wrapper
  1160. # for this: https://github.com/cofyc/dnscrypt-wrapper/blob/master/README.md#usage
  1161. # 2. dnscrypt channel attaches to an interface. you MUST set interfaces to
  1162. # listen on `dnscrypt-port` with the follo0wing snippet:
  1163. # server:
  1164. # interface: 0.0.0.0@443
  1165. # interface: ::0@443
  1166. #
  1167. # Finally, `dnscrypt` config has its own section.
  1168. # dnscrypt:
  1169. # dnscrypt-enable: yes
  1170. # dnscrypt-port: 443
  1171. # dnscrypt-provider: 2.dnscrypt-cert.example.com.
  1172. # dnscrypt-secret-key: /path/unbound-conf/keys1/1.key
  1173. # dnscrypt-secret-key: /path/unbound-conf/keys2/1.key
  1174. # dnscrypt-provider-cert: /path/unbound-conf/keys1/1.cert
  1175. # dnscrypt-provider-cert: /path/unbound-conf/keys2/1.cert
  1176.  
  1177. # CacheDB
  1178. # External backend DB as auxiliary cache.
  1179. # To enable, use --enable-cachedb to configure before compiling.
  1180. # Specify the backend name
  1181. # (default is "testframe", which has no use other than for debugging and
  1182. # testing) and backend-specific options. The 'cachedb' module must be
  1183. # included in module-config, just before the iterator module.
  1184. # cachedb:
  1185. # backend: "testframe"
  1186. # # secret seed string to calculate hashed keys
  1187. # secret-seed: "default"
  1188. #
  1189. # # For "redis" backend:
  1190. # # (to enable, use --with-libhiredis to configure before compiling)
  1191. # # redis server's IP address or host name
  1192. # redis-server-host: 127.0.0.1
  1193. # # redis server's TCP port
  1194. # redis-server-port: 6379
  1195. # # timeout (in ms) for communication with the redis server
  1196. # redis-timeout: 100
  1197. # # set timeout on redis records based on DNS response TTL
  1198. # redis-expire-records: no
  1199.  
  1200. # IPSet
  1201. # Add specify domain into set via ipset.
  1202. # To enable:
  1203. # o use --enable-ipset to configure before compiling;
  1204. # o Unbound then needs to run as root user.
  1205. # ipset:
  1206. # # set name for ip v4 addresses
  1207. # name-v4: "list-v4"
  1208. # # set name for ip v6 addresses
  1209. # name-v6: "list-v6"
  1210. #
  1211.  
  1212. # Dnstap logging support, if compiled in by using --enable-dnstap to configure.
  1213. # To enable, set the dnstap-enable to yes and also some of
  1214. # dnstap-log-..-messages to yes. And select an upstream log destination, by
  1215. # socket path, TCP or TLS destination.
  1216. # dnstap:
  1217. # dnstap-enable: no
  1218. # # if set to yes frame streams will be used in bidirectional mode
  1219. # dnstap-bidirectional: yes
  1220. # dnstap-socket-path: ""
  1221. # # if "" use the unix socket in dnstap-socket-path, otherwise,
  1222. # # set it to "IPaddress[@port]" of the destination.
  1223. # dnstap-ip: ""
  1224. # # if set to yes if you want to use TLS to dnstap-ip, no for TCP.
  1225. # dnstap-tls: yes
  1226. # # name for authenticating the upstream server. or "" disabled.
  1227. # dnstap-tls-server-name: ""
  1228. # # if "", it uses the cert bundle from the main Unbound config.
  1229. # dnstap-tls-cert-bundle: ""
  1230. # # key file for client authentication, or "" disabled.
  1231. # dnstap-tls-client-key-file: ""
  1232. # # cert file for client authentication, or "" disabled.
  1233. # dnstap-tls-client-cert-file: ""
  1234. # dnstap-send-identity: no
  1235. # dnstap-send-version: no
  1236. # # if "" it uses the hostname.
  1237. # dnstap-identity: ""
  1238. # # if "" it uses the package version.
  1239. # dnstap-version: ""
  1240. # dnstap-log-resolver-query-messages: no
  1241. # dnstap-log-resolver-response-messages: no
  1242. # dnstap-log-client-query-messages: no
  1243. # dnstap-log-client-response-messages: no
  1244. # dnstap-log-forwarder-query-messages: no
  1245. # dnstap-log-forwarder-response-messages: no
  1246.  
  1247. # Response Policy Zones
  1248. # RPZ policies. Applied in order of configuration. QNAME, Response IP
  1249. # Address, nsdname, nsip and clientip triggers are supported. Supported
  1250. # actions are: NXDOMAIN, NODATA, PASSTHRU, DROP, Local Data, tcp-only
  1251. # and drop. Policies can be loaded from a file, or using zone
  1252. # transfer, or using HTTP. The respip module needs to be added
  1253. # to the module-config, e.g.: module-config: "respip validator iterator".
  1254. # rpz:
  1255. # name: "rpz.example.com"
  1256. # zonefile: "rpz.example.com"
  1257. # primary: 192.0.2.0
  1258. # allow-notify: 192.0.2.0/32
  1259. # url: http://www.example.com/rpz.example.org.zone
  1260. # rpz-action-override: cname
  1261. # rpz-cname-override: www.example.org
  1262. # rpz-log: yes
  1263. # rpz-log-name: "example policy"
  1264. # rpz-signal-nxdomain-ra: no
  1265. # for-downstream: no
  1266. # tags: "example"
  1267.  
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