example.conf.in revision 294190
1178172Simp# 2178172Simp# Example configuration file. 3178172Simp# 4178172Simp# See unbound.conf(5) man page, version 1.5.7. 5178172Simp# 6178172Simp# this is a comment. 7178172Simp 8178172Simp#Use this to include other text into the file. 9178172Simp#include: "otherfile.conf" 10178172Simp 11178172Simp# The server clause sets the main parameters. 12178172Simpserver: 13178172Simp # whitespace is not necessary, but looks cleaner. 14178172Simp 15178172Simp # verbosity number, 0 is least verbose. 1 is default. 16178172Simp verbosity: 1 17178172Simp 18178172Simp # print statistics to the log (for every thread) every N seconds. 19178172Simp # Set to "" or 0 to disable. Default is disabled. 20178172Simp # statistics-interval: 0 21178172Simp 22178172Simp # enable cumulative statistics, without clearing them after printing. 23178172Simp # statistics-cumulative: no 24178172Simp 25178172Simp # enable extended statistics (query types, answer codes, status) 26178172Simp # printed from unbound-control. default off, because of speed. 27178172Simp # extended-statistics: no 28178172Simp 29178172Simp # number of threads to create. 1 disables threading. 30178172Simp # num-threads: 1 31178172Simp 32178172Simp # specify the interfaces to answer queries from by ip-address. 33178172Simp # The default is to listen to localhost (127.0.0.1 and ::1). 34178172Simp # specify 0.0.0.0 and ::0 to bind to all available interfaces. 35178172Simp # specify every interface[@port] on a new 'interface:' labelled line. 36178172Simp # The listen interfaces are not changed on reload, only on restart. 37178172Simp # interface: 192.0.2.153 38178172Simp # interface: 192.0.2.154 39187305Simp # interface: 192.0.2.154@5003 40178172Simp # interface: 2001:DB8::5 41178172Simp 42178172Simp # enable this feature to copy the source address of queries to reply. 43178172Simp # Socket options are not supported on all platforms. experimental. 44178172Simp # interface-automatic: no 45183771Simp 46178172Simp # port to answer queries from 47178172Simp # port: 53 48178172Simp 49178172Simp # specify the interfaces to send outgoing queries to authoritative 50178172Simp # server from by ip-address. If none, the default (all) interface 51178172Simp # is used. Specify every interface on a 'outgoing-interface:' line. 52178172Simp # outgoing-interface: 192.0.2.153 53178172Simp # outgoing-interface: 2001:DB8::5 54178172Simp # outgoing-interface: 2001:DB8::6 55178172Simp 56178172Simp # number of ports to allocate per thread, determines the size of the 57178172Simp # port range that can be open simultaneously. About double the 58178172Simp # num-queries-per-thread, or, use as many as the OS will allow you. 59178172Simp # outgoing-range: 4096 60178172Simp 61248084Sattilio # permit unbound to use this port number or port range for 62178172Simp # making outgoing queries, using an outgoing interface. 63178172Simp # outgoing-port-permit: 32768 64178172Simp 65178172Simp # deny unbound the use this of port number or port range for 66178172Simp # making outgoing queries, using an outgoing interface. 67178172Simp # Use this to make sure unbound does not grab a UDP port that some 68178172Simp # other server on this computer needs. The default is to avoid 69178172Simp # IANA-assigned port numbers. 70178172Simp # If multiple outgoing-port-permit and outgoing-port-avoid options 71178172Simp # are present, they are processed in order. 72178172Simp # outgoing-port-avoid: "3200-3208" 73178172Simp 74178172Simp # number of outgoing simultaneous tcp buffers to hold per thread. 75178172Simp # outgoing-num-tcp: 10 76178172Simp 77178172Simp # number of incoming simultaneous tcp buffers to hold per thread. 78202046Simp # incoming-num-tcp: 10 79178172Simp 80178172Simp # buffer size for UDP port 53 incoming (SO_RCVBUF socket option). 81202046Simp # 0 is system default. Use 4m to catch query spikes for busy servers. 82202046Simp # so-rcvbuf: 0 83178172Simp 84202046Simp # buffer size for UDP port 53 outgoing (SO_SNDBUF socket option). 85178172Simp # 0 is system default. Use 4m to handle spikes on very busy servers. 86202830Simp # so-sndbuf: 0 87202909Sgonzo 88202046Simp # use SO_REUSEPORT to distribute queries over threads. 89202046Simp # so-reuseport: no 90178172Simp 91209243Sjchandra # use IP_TRANSPARENT so the interface: addresses can be non-local 92178172Simp # and you can config non-existing IPs that are going to work later on 93178172Simp # ip-transparent: no 94178172Simp 95178172Simp # EDNS reassembly buffer to advertise to UDP peers (the actual buffer 96178172Simp # is set with msg-buffer-size). 1480 can solve fragmentation (timeouts). 97178172Simp # edns-buffer-size: 4096 98178172Simp 99178172Simp # Maximum UDP response size (not applied to TCP response). 100178172Simp # Suggested values are 512 to 4096. Default is 4096. 65536 disables it. 101178172Simp # max-udp-size: 4096 102178172Simp 103178172Simp # buffer size for handling DNS data. No messages larger than this 104178172Simp # size can be sent or received, by UDP or TCP. In bytes. 105217516Simp # msg-buffer-size: 65552 106178172Simp 107178172Simp # the amount of memory to use for the message cache. 108217516Simp # plain value in bytes or you can append k, m or G. default is "4Mb". 109217516Simp # msg-cache-size: 4m 110217516Simp 111178172Simp # the number of slabs to use for the message cache. 112178172Simp # the number of slabs must be a power of 2. 113202046Simp # more slabs reduce lock contention, but fragment memory usage. 114178172Simp # msg-cache-slabs: 4 115178172Simp 116178172Simp # the number of queries that a thread gets to service. 117178172Simp # num-queries-per-thread: 1024 118178172Simp 119178172Simp # if very busy, 50% queries run to completion, 50% get timeout in msec 120178172Simp # jostle-timeout: 200 121203180Sneel 122203180Sneel # msec to wait before close of port on timeout UDP. 0 disables. 123203180Sneel # delay-close: 0 124209243Sjchandra 125203180Sneel # the amount of memory to use for the RRset cache. 126203180Sneel # plain value in bytes or you can append k, m or G. default is "4Mb". 127203180Sneel # rrset-cache-size: 4m 128203180Sneel 129203180Sneel # the number of slabs to use for the RRset cache. 130203180Sneel # the number of slabs must be a power of 2. 131203180Sneel # more slabs reduce lock contention, but fragment memory usage. 132203180Sneel # rrset-cache-slabs: 4 133203180Sneel 134203180Sneel # the time to live (TTL) value lower bound, in seconds. Default 0. 135203180Sneel # If more than an hour could easily give trouble due to stale data. 136203180Sneel # cache-min-ttl: 0 137203180Sneel 138203180Sneel # the time to live (TTL) value cap for RRsets and messages in the 139203180Sneel # cache. Items are not cached for longer. In seconds. 140178172Simp # cache-max-ttl: 86400 141217345Sjchandra 142217345Sjchandra # the time to live (TTL) value cap for negative responses in the cache 143214903Sgonzo # cache-max-negative-ttl: 3600 144202046Simp 145178172Simp # the time to live (TTL) value for cached roundtrip times, lameness and 146178172Simp # EDNS version information for hosts. In seconds. 147178172Simp # infra-host-ttl: 900 148178172Simp 149178172Simp # minimum wait time for responses, increase if uplink is long. In msec. 150178172Simp # infra-cache-min-rtt: 50 151178172Simp 152178172Simp # the number of slabs to use for the Infrastructure cache. 153178172Simp # the number of slabs must be a power of 2. 154178172Simp # more slabs reduce lock contention, but fragment memory usage. 155178172Simp # infra-cache-slabs: 4 156178172Simp 157178172Simp # the maximum number of hosts that are cached (roundtrip, EDNS, lame). 158178172Simp # infra-cache-numhosts: 10000 159178172Simp 160178172Simp # Enable IPv4, "yes" or "no". 161178172Simp # do-ip4: yes 162178172Simp 163178172Simp # Enable IPv6, "yes" or "no". 164178172Simp # do-ip6: yes 165178172Simp 166226517Sjchandra # Enable UDP, "yes" or "no". 167226517Sjchandra # do-udp: yes 168226517Sjchandra 169178172Simp # Enable TCP, "yes" or "no". 170202909Sgonzo # do-tcp: yes 171202909Sgonzo 172202909Sgonzo # upstream connections use TCP only (and no UDP), "yes" or "no" 173178172Simp # useful for tunneling scenarios, default no. 174178172Simp # tcp-upstream: no 175178172Simp 176202909Sgonzo # Detach from the terminal, run in background, "yes" or "no". 177202909Sgonzo # do-daemonize: yes 178202909Sgonzo 179202909Sgonzo # control which clients are allowed to make (recursive) queries 180202909Sgonzo # to this server. Specify classless netblocks with /size and action. 181202909Sgonzo # By default everything is refused, except for localhost. 182178172Simp # Choose deny (drop message), refuse (polite error reply), 183178172Simp # allow (recursive ok), allow_snoop (recursive and nonrecursive ok) 184178172Simp # deny_non_local (drop queries unless can be answered from local-data) 185178172Simp # refuse_non_local (like deny_non_local but polite error reply). 186178172Simp # access-control: 0.0.0.0/0 refuse 187178172Simp # access-control: 127.0.0.0/8 allow 188178172Simp # access-control: ::0/0 refuse 189178172Simp # access-control: ::1 allow 190219106Sjchandra # access-control: ::ffff:127.0.0.1 allow 191219106Sjchandra 192187305Simp # if given, a chroot(2) is done to the given directory. 193178172Simp # i.e. you can chroot to the working directory, for example, 194178172Simp # for extra security, but make sure all files are in that directory. 195178172Simp # 196178172Simp # If chroot is enabled, you should pass the configfile (from the 197178172Simp # commandline) as a full path from the original root. After the 198178172Simp # chroot has been performed the now defunct portion of the config 199178172Simp # file path is removed to be able to reread the config after a reload. 200178172Simp # 201219106Sjchandra # All other file paths (working dir, logfile, roothints, and 202178172Simp # key files) can be specified in several ways: 203219106Sjchandra # o as an absolute path relative to the new root. 204219106Sjchandra # o as a relative path to the working directory. 205219106Sjchandra # o as an absolute path relative to the original root. 206219106Sjchandra # In the last case the path is adjusted to remove the unused portion. 207219106Sjchandra # 208178172Simp # The pid file can be absolute and outside of the chroot, it is 209178172Simp # written just prior to performing the chroot and dropping permissions. 210178172Simp # 211178172Simp # Additionally, unbound may need to access /dev/random (for entropy). 212178172Simp # How to do this is specific to your OS. 213217354Sjchandra # 214217354Sjchandra # If you give "" no chroot is performed. The path must not end in a /. 215217354Sjchandra # chroot: "@UNBOUND_CHROOT_DIR@" 216202046Simp 217178172Simp # if given, user privileges are dropped (after binding port), 218178172Simp # and the given username is assumed. Default is user "unbound". 219178172Simp # If you give "" no privileges are dropped. 220178172Simp # username: "@UNBOUND_USERNAME@" 221178172Simp 222178172Simp # the working directory. The relative files in this config are 223178172Simp # relative to this directory. If you give "" the working directory 224178172Simp # is not changed. 225178172Simp # directory: "@UNBOUND_RUN_DIR@" 226178172Simp 227178172Simp # the log file, "" means log to stderr. 228178172Simp # Use of this option sets use-syslog to "no". 229178172Simp # logfile: "" 230178172Simp 231187294Simp # Log to syslog(3) if yes. The log facility LOG_DAEMON is used to 232187294Simp # log to, with identity "unbound". If yes, it overrides the logfile. 233178172Simp # use-syslog: yes 234178172Simp 235192323Smarcel # print UTC timestamp in ascii to logfile, default is epoch in seconds. 236192323Smarcel # log-time-ascii: no 237192323Smarcel 238192323Smarcel # print one line with time, IP, name, type, class for every query. 239192323Smarcel # log-queries: no 240192323Smarcel 241192323Smarcel # the pid file. Can be an absolute path outside of chroot/work dir. 242192323Smarcel # pidfile: "@UNBOUND_PIDFILE@" 243192323Smarcel 244192323Smarcel # file to read root hints from. 245178172Simp # get one from https://www.internic.net/domain/named.cache 246178172Simp # root-hints: "" 247178172Simp 248178172Simp # enable to not answer id.server and hostname.bind queries. 249178172Simp # hide-identity: no 250187294Simp 251178172Simp # enable to not answer version.server and version.bind queries. 252178172Simp # hide-version: no 253178172Simp 254178172Simp # the identity to report. Leave "" or default to return hostname. 255178172Simp # identity: "" 256178172Simp 257178172Simp # the version to report. Leave "" or default to return package version. 258178172Simp # version: "" 259178172Simp 260178172Simp # the target fetch policy. 261178172Simp # series of integers describing the policy per dependency depth. 262178172Simp # The number of values in the list determines the maximum dependency 263210098Simp # depth the recursor will pursue before giving up. Each integer means: 264187326Simp # -1 : fetch all targets opportunistically, 265187326Simp # 0: fetch on demand, 266178172Simp # positive value: fetch that many targets opportunistically. 267202046Simp # Enclose the list of numbers between quotes (""). 268178172Simp # target-fetch-policy: "3 2 1 0 0" 269178172Simp 270202046Simp # Harden against very small EDNS buffer sizes. 271178172Simp # harden-short-bufsize: no 272178172Simp 273203180Sneel # Harden against unseemly large queries. 274202046Simp # harden-large-queries: no 275202046Simp 276202046Simp # Harden against out of zone rrsets, to avoid spoofing attempts. 277202046Simp # harden-glue: yes 278202046Simp 279202046Simp # Harden against receiving dnssec-stripped data. If you turn it 280202046Simp # off, failing to validate dnskey data for a trustanchor will 281202046Simp # trigger insecure mode for that zone (like without a trustanchor). 282202046Simp # Default on, which insists on dnssec data for trust-anchored zones. 283203180Sneel # harden-dnssec-stripped: yes 284203180Sneel 285203180Sneel # Harden against queries that fall under dnssec-signed nxdomain names. 286203180Sneel # harden-below-nxdomain: no 287202046Simp 288202046Simp # Harden the referral path by performing additional queries for 289202046Simp # infrastructure data. Validates the replies (if possible). 290202046Simp # Default off, because the lookups burden the server. Experimental 291202046Simp # implementation of draft-wijngaards-dnsext-resolver-side-mitigation. 292202046Simp # harden-referral-path: no 293202046Simp 294178172Simp # Harden against algorithm downgrade when multiple algorithms are 295178172Simp # advertised in the DS record. If no, allows the weakest algorithm 296178172Simp # to validate the zone. 297178172Simp # harden-algo-downgrade: no 298178172Simp 299206819Sjmallett # Sent minimum amount of information to upstream servers to enhance 300206819Sjmallett # privacy. Only sent minimum required labels of the QNAME and set QTYPE 301178172Simp # to NS when possible. 302187326Simp # qname-minimisation: no 303199114Sgonzo 304199114Sgonzo # Use 0x20-encoded random bits in the query to foil spoof attempts. 305199114Sgonzo # This feature is an experimental implementation of draft dns-0x20. 306202046Simp # use-caps-for-id: no 307178172Simp 308178172Simp # Domains (and domains in them) without support for dns-0x20 and 309178172Simp # the fallback fails because they keep sending different answers. 310178172Simp # caps-whitelist: "licdn.com" 311178172Simp 312202046Simp # Enforce privacy of these addresses. Strips them away from answers. 313178172Simp # It may cause DNSSEC validation to additionally mark it as bogus. 314202046Simp # Protects against 'DNS Rebinding' (uses browser as network proxy). 315202046Simp # Only 'private-domain' and 'local-data' names are allowed to have 316202046Simp # these private addresses. No default. 317210403Smav # private-address: 10.0.0.0/8 318202046Simp # private-address: 172.16.0.0/12 319210403Smav # private-address: 192.168.0.0/16 320178172Simp # private-address: 169.254.0.0/16 321178172Simp # private-address: fd00::/8 322178172Simp # private-address: fe80::/10 323178172Simp # private-address: ::ffff:0:0/96 324178172Simp 325178172Simp # Allow the domain (and its subdomains) to contain private addresses. 326178172Simp # local-data statements are allowed to contain private addresses too. 327178172Simp # private-domain: "example.com" 328178172Simp 329178172Simp # If nonzero, unwanted replies are not only reported in statistics, 330178172Simp # but also a running total is kept per thread. If it reaches the 331178172Simp # threshold, a warning is printed and a defensive action is taken, 332178172Simp # the cache is cleared to flush potential poison out of it. 333226517Sjchandra # A suggested value is 10000000, the default is 0 (turned off). 334226517Sjchandra # unwanted-reply-threshold: 0 335226517Sjchandra 336226517Sjchandra # Do not query the following addresses. No DNS queries are sent there. 337226517Sjchandra # List one address per entry. List classless netblocks with /size, 338226517Sjchandra # do-not-query-address: 127.0.0.1/8 339178172Simp # do-not-query-address: ::1 340178172Simp 341178172Simp # if yes, the above default do-not-query-address entries are present. 342178172Simp # if no, localhost can be queried (for testing and debugging). 343178172Simp # do-not-query-localhost: yes 344178172Simp 345178172Simp # if yes, perform prefetching of almost expired message cache entries. 346178172Simp # prefetch: no 347210038Simp 348178172Simp # if yes, perform key lookups adjacent to normal lookups. 349178172Simp # prefetch-key: no 350239671Srwatson 351239671Srwatson # if yes, Unbound rotates RRSet order in response. 352239671Srwatson # rrset-roundrobin: no 353239671Srwatson 354239671Srwatson # if yes, Unbound doesn't insert authority/additional sections 355239671Srwatson # into response messages when those sections are not required. 356232615Sjmallett # minimal-responses: no 357178172Simp 358178172Simp # module configuration of the server. A string with identifiers 359178172Simp # separated by spaces. Syntax: "[dns64] [validator] iterator" 360232615Sjmallett # module-config: "validator iterator" 361178172Simp 362178172Simp # File with trusted keys, kept uptodate using RFC5011 probes, 363232615Sjmallett # initial file like trust-anchor-file, then it stores metadata. 364178172Simp # Use several entries, one per domain name, to track multiple zones. 365178172Simp # 366178172Simp # If you want to perform DNSSEC validation, run unbound-anchor before 367178172Simp # you start unbound (i.e. in the system boot scripts). And enable: 368178172Simp # Please note usage of unbound-anchor root anchor is at your own risk 369178172Simp # and under the terms of our LICENSE (see that file in the source). 370178172Simp # auto-trust-anchor-file: "@UNBOUND_ROOTKEY_FILE@" 371178172Simp 372178172Simp # File with DLV trusted keys. Same format as trust-anchor-file. 373178172Simp # There can be only one DLV configured, it is trusted from root down. 374178172Simp # DLV is going to be decommissioned. Please do not use it any more. 375178172Simp # dlv-anchor-file: "dlv.isc.org.key" 376212632Sneel 377202697Sneel # File with trusted keys for validation. Specify more than one file 378178172Simp # with several entries, one file per entry. 379210038Simp # Zone file format, with DS and DNSKEY entries. 380178172Simp # Note this gets out of date, use auto-trust-anchor-file please. 381178172Simp # trust-anchor-file: "" 382178172Simp 383202909Sgonzo # Trusted key for validation. DS or DNSKEY. specify the RR on a 384202909Sgonzo # single line, surrounded by "". TTL is ignored. class is IN default. 385202909Sgonzo # Note this gets out of date, use auto-trust-anchor-file please. 386202909Sgonzo # (These examples are from August 2007 and may not be valid anymore). 387202909Sgonzo # trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ==" 388202909Sgonzo # trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A" 389232998Sgonzo 390232998Sgonzo # File with trusted keys for validation. Specify more than one file 391232998Sgonzo # with several entries, one file per entry. Like trust-anchor-file 392232998Sgonzo # but has a different file format. Format is BIND-9 style format, 393233019Sgonzo # the trusted-keys { name flag proto algo "key"; }; clauses are read. 394233019Sgonzo # you need external update procedures to track changes in keys. 395233019Sgonzo # trusted-keys-file: "" 396233019Sgonzo 397233019Sgonzo # Ignore chain of trust. Domain is treated as insecure. 398232998Sgonzo # domain-insecure: "example.com" 399232998Sgonzo 400232998Sgonzo # Override the date for validation with a specific fixed date. 401233019Sgonzo # Do not set this unless you are debugging signature inception 402233019Sgonzo # and expiration. "" or "0" turns the feature off. -1 ignores date. 403232998Sgonzo # val-override-date: "" 404232998Sgonzo 405232998Sgonzo # The time to live for bogus data, rrsets and messages. This avoids 406232998Sgonzo # some of the revalidation, until the time interval expires. in secs. 407233019Sgonzo # val-bogus-ttl: 60 408233019Sgonzo 409232998Sgonzo # The signature inception and expiration dates are allowed to be off 410232998Sgonzo # by 10% of the signature lifetime (expir-incep) from our local clock. 411232998Sgonzo # This leeway is capped with a minimum and a maximum. In seconds. 412232998Sgonzo # val-sig-skew-min: 3600 413233019Sgonzo # val-sig-skew-max: 86400 414233019Sgonzo 415233019Sgonzo # Should additional section of secure message also be kept clean of 416232998Sgonzo # unsecure data. Useful to shield the users of this validator from 417232998Sgonzo # potential bogus data in the additional section. All unsigned data 418233019Sgonzo # in the additional section is removed from secure messages. 419233019Sgonzo # val-clean-additional: yes 420233019Sgonzo 421232998Sgonzo # Turn permissive mode on to permit bogus messages. Thus, messages 422232998Sgonzo # for which security checks failed will be returned to clients, 423232998Sgonzo # instead of SERVFAIL. It still performs the security checks, which 424233019Sgonzo # result in interesting log files and possibly the AD bit in 425233019Sgonzo # replies if the message is found secure. The default is off. 426232998Sgonzo # val-permissive-mode: no 427233019Sgonzo 428233019Sgonzo # Ignore the CD flag in incoming queries and refuse them bogus data. 429232998Sgonzo # Enable it if the only clients of unbound are legacy servers (w2008) 430232998Sgonzo # that set CD but cannot validate themselves. 431232998Sgonzo # ignore-cd-flag: no 432232998Sgonzo 433232998Sgonzo # Have the validator log failed validations for your diagnosis. 434202909Sgonzo # 0: off. 1: A line per failed user query. 2: With reason and bad IP. 435202909Sgonzo # val-log-level: 0 436202909Sgonzo 437202909Sgonzo # It is possible to configure NSEC3 maximum iteration counts per 438202909Sgonzo # keysize. Keep this table very short, as linear search is done. 439202909Sgonzo # A message with an NSEC3 with larger count is marked insecure. 440202909Sgonzo # List in ascending order the keysize and count values. 441202909Sgonzo # val-nsec3-keysize-iterations: "1024 150 2048 500 4096 2500" 442202909Sgonzo 443202909Sgonzo # instruct the auto-trust-anchor-file probing to add anchors after ttl. 444202909Sgonzo # add-holddown: 2592000 # 30 days 445202909Sgonzo 446202909Sgonzo # instruct the auto-trust-anchor-file probing to del anchors after ttl. 447202909Sgonzo # del-holddown: 2592000 # 30 days 448202909Sgonzo 449202909Sgonzo # auto-trust-anchor-file probing removes missing anchors after ttl. 450203697Sneel # If the value 0 is given, missing anchors are not removed. 451178172Simp # keep-missing: 31622400 # 366 days 452203697Sneel 453178172Simp # debug option that allows very small holddown times for key rollover 454203180Sneel # permit-small-holddown: no 455209243Sjchandra 456203180Sneel # the amount of memory to use for the key cache. 457203180Sneel # plain value in bytes or you can append k, m or G. default is "4Mb". 458203180Sneel # key-cache-size: 4m 459203180Sneel 460203180Sneel # the number of slabs to use for the key cache. 461203180Sneel # the number of slabs must be a power of 2. 462209482Sjchandra # more slabs reduce lock contention, but fragment memory usage. 463209243Sjchandra # key-cache-slabs: 4 464209243Sjchandra 465209243Sjchandra # the amount of memory to use for the negative cache (used for DLV). 466203697Sneel # plain value in bytes or you can append k, m or G. default is "1Mb". 467203180Sneel # neg-cache-size: 1m 468203697Sneel 469203697Sneel # By default, for a number of zones a small default 'nothing here' 470203697Sneel # reply is built-in. Query traffic is thus blocked. If you 471203697Sneel # wish to serve such zone you can unblock them by uncommenting one 472203697Sneel # of the nodefault statements below. 473203697Sneel # You may also have to use domain-insecure: zone to make DNSSEC work, 474203697Sneel # unless you have your own trust anchors for this zone. 475203697Sneel # local-zone: "localhost." nodefault 476203697Sneel # local-zone: "127.in-addr.arpa." nodefault 477203697Sneel # 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 478203697Sneel # local-zone: "10.in-addr.arpa." nodefault 479216862Sjmallett # local-zone: "16.172.in-addr.arpa." nodefault 480216862Sjmallett # local-zone: "17.172.in-addr.arpa." nodefault 481203697Sneel # local-zone: "18.172.in-addr.arpa." nodefault 482216862Sjmallett # local-zone: "19.172.in-addr.arpa." nodefault 483203697Sneel # local-zone: "20.172.in-addr.arpa." nodefault 484178172Simp # local-zone: "21.172.in-addr.arpa." nodefault 485178172Simp # local-zone: "22.172.in-addr.arpa." nodefault 486178172Simp # local-zone: "23.172.in-addr.arpa." nodefault 487178172Simp # local-zone: "24.172.in-addr.arpa." nodefault 488178172Simp # local-zone: "25.172.in-addr.arpa." nodefault 489178172Simp # local-zone: "26.172.in-addr.arpa." nodefault 490178172Simp # local-zone: "27.172.in-addr.arpa." nodefault 491178172Simp # local-zone: "28.172.in-addr.arpa." nodefault 492178172Simp # local-zone: "29.172.in-addr.arpa." nodefault 493178172Simp # local-zone: "30.172.in-addr.arpa." nodefault 494178172Simp # local-zone: "31.172.in-addr.arpa." nodefault 495178172Simp # local-zone: "168.192.in-addr.arpa." nodefault 496178172Simp # local-zone: "0.in-addr.arpa." nodefault 497178172Simp # local-zone: "254.169.in-addr.arpa." nodefault 498178172Simp # local-zone: "2.0.192.in-addr.arpa." nodefault 499178172Simp # local-zone: "100.51.198.in-addr.arpa." nodefault 500178172Simp # local-zone: "113.0.203.in-addr.arpa." nodefault 501178172Simp # local-zone: "255.255.255.255.in-addr.arpa." nodefault 502178172Simp # 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 503178172Simp # local-zone: "d.f.ip6.arpa." nodefault 504178172Simp # local-zone: "8.e.f.ip6.arpa." nodefault 505178172Simp # local-zone: "9.e.f.ip6.arpa." nodefault 506214835Sjhb # local-zone: "a.e.f.ip6.arpa." nodefault 507178172Simp # local-zone: "b.e.f.ip6.arpa." nodefault 508178172Simp # local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault 509214835Sjhb # And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa. 510214835Sjhb 511214835Sjhb # if unbound is running service for the local host then it is useful 512214835Sjhb # to perform lan-wide lookups to the upstream, and unblock the 513214835Sjhb # long list of local-zones above. If this unbound is a dns server 514214835Sjhb # for a network of computers, disabled is better and stops information 515178172Simp # leakage of local lan information. 516178172Simp # unblock-lan-zones: no 517178172Simp 518178172Simp # a number of locally served zones can be configured. 519178172Simp # local-zone: <zone> <type> 520178172Simp # local-data: "<resource record string>" 521178172Simp # o deny serves local data (if any), else, drops queries. 522214835Sjhb # o refuse serves local data (if any), else, replies with error. 523178172Simp # o static serves local data, else, nxdomain or nodata answer. 524178172Simp # o transparent gives local data, but resolves normally for other names 525178172Simp # o redirect serves the zone data for any subdomain in the zone. 526214835Sjhb # o nodefault can be used to normally resolve AS112 zones. 527178172Simp # o typetransparent resolves normally for other types and other names 528178172Simp # o inform resolves normally, but logs client IP address 529214835Sjhb # o inform_deny drops queries and logs client IP address 530178172Simp # 531178172Simp # defaults are localhost address, reverse for 127.0.0.1 and ::1 532178172Simp # and nxdomain for AS112 zones. If you configure one of these zones 533178172Simp # the default content is omitted, or you can omit it with 'nodefault'. 534178172Simp # 535178172Simp # If you configure local-data without specifying local-zone, by 536178471Sjeff # default a transparent local-zone is created for the data. 537178172Simp # 538216862Sjmallett # You can add locally served data with 539216862Sjmallett # local-zone: "local." static 540216862Sjmallett # local-data: "mycomputer.local. IN A 192.0.2.51" 541216862Sjmallett # local-data: 'mytext.local TXT "content of text record"' 542216862Sjmallett # 543216862Sjmallett # You can override certain queries with 544216862Sjmallett # local-data: "adserver.example.com A 127.0.0.1" 545216862Sjmallett # 546216862Sjmallett # You can redirect a domain to a fixed address with 547226517Sjchandra # (this makes example.com, www.example.com, etc, all go to 192.0.2.3) 548216862Sjmallett # local-zone: "example.com" redirect 549216862Sjmallett # local-data: "example.com A 192.0.2.3" 550216862Sjmallett # 551216862Sjmallett # Shorthand to make PTR records, "IPv4 name" or "IPv6 name". 552178172Simp # You can also add PTR records using local-data directly, but then 553178172Simp # you need to do the reverse notation yourself. 554187293Simp # local-data-ptr: "192.0.2.3 www.example.com" 555187293Simp 556178172Simp # service clients over SSL (on the TCP sockets), with plain DNS inside 557178172Simp # the SSL stream. Give the certificate to use and private key. 558187293Simp # default is "" (disabled). requires restart to take effect. 559178172Simp # ssl-service-key: "path/to/privatekeyfile.key" 560202046Simp # ssl-service-pem: "path/to/publiccertfile.pem" 561202046Simp # ssl-port: 853 562217345Sjchandra 563202046Simp # request upstream over SSL (with plain DNS inside the SSL stream). 564202046Simp # Default is no. Can be turned on and off with unbound-control. 565202046Simp # ssl-upstream: no 566202046Simp 567217345Sjchandra # DNS64 prefix. Must be specified when DNS64 is use. 568202046Simp # Enable dns64 in module-config. Used to synthesize IPv6 from IPv4. 569202046Simp # dns64-prefix: 64:ff9b::0/96 570202046Simp 571202046Simp # ratelimit for uncached, new queries, this limits recursion effort. 572202046Simp # ratelimiting is experimental, and may help against randomqueryflood. 573 # if 0(default) it is disabled, otherwise state qps allowed per zone. 574 # ratelimit: 0 575 576 # ratelimits are tracked in a cache, size in bytes of cache (or k,m). 577 # ratelimit-size: 4m 578 # ratelimit cache slabs, reduces lock contention if equal to cpucount. 579 # ratelimit-slabs: 4 580 581 # 0 blocks when ratelimited, otherwise let 1/xth traffic through 582 # ratelimit-factor: 10 583 584 # override the ratelimit for a specific domain name. 585 # give this setting multiple times to have multiple overrides. 586 # ratelimit-for-domain: example.com 1000 587 # override the ratelimits for all domains below a domain name 588 # can give this multiple times, the name closest to the zone is used. 589 # ratelimit-below-domain: example 1000 590 591# Python config section. To enable: 592# o use --with-pythonmodule to configure before compiling. 593# o list python in the module-config string (above) to enable. 594# o and give a python-script to run. 595python: 596 # Script file to load 597 # python-script: "@UNBOUND_SHARE_DIR@/ubmodule-tst.py" 598 599# Remote control config section. 600remote-control: 601 # Enable remote control with unbound-control(8) here. 602 # set up the keys and certificates with unbound-control-setup. 603 # control-enable: no 604 605 # Set to no and use an absolute path as control-interface to use 606 # a unix local named pipe for unbound-control. 607 # control-use-cert: yes 608 609 # what interfaces are listened to for remote control. 610 # give 0.0.0.0 and ::0 to listen to all interfaces. 611 # control-interface: 127.0.0.1 612 # control-interface: ::1 613 614 # port number for remote control operations. 615 # control-port: 8953 616 617 # unbound server key file. 618 # server-key-file: "@UNBOUND_RUN_DIR@/unbound_server.key" 619 620 # unbound server certificate file. 621 # server-cert-file: "@UNBOUND_RUN_DIR@/unbound_server.pem" 622 623 # unbound-control key file. 624 # control-key-file: "@UNBOUND_RUN_DIR@/unbound_control.key" 625 626 # unbound-control certificate file. 627 # control-cert-file: "@UNBOUND_RUN_DIR@/unbound_control.pem" 628 629# Stub zones. 630# Create entries like below, to make all queries for 'example.com' and 631# 'example.org' go to the given list of nameservers. list zero or more 632# nameservers by hostname or by ipaddress. If you set stub-prime to yes, 633# the list is treated as priming hints (default is no). 634# With stub-first yes, it attempts without the stub if it fails. 635# Consider adding domain-insecure: name and local-zone: name nodefault 636# to the server: section if the stub is a locally served zone. 637# stub-zone: 638# name: "example.com" 639# stub-addr: 192.0.2.68 640# stub-prime: no 641# stub-first: no 642# stub-zone: 643# name: "example.org" 644# stub-host: ns.example.com. 645 646# Forward zones 647# Create entries like below, to make all queries for 'example.com' and 648# 'example.org' go to the given list of servers. These servers have to handle 649# recursion to other nameservers. List zero or more nameservers by hostname 650# or by ipaddress. Use an entry with name "." to forward all queries. 651# If you enable forward-first, it attempts without the forward if it fails. 652# forward-zone: 653# name: "example.com" 654# forward-addr: 192.0.2.68 655# forward-addr: 192.0.2.73@5355 # forward to port 5355. 656# forward-first: no 657# forward-zone: 658# name: "example.org" 659# forward-host: fwd.example.com 660