example.conf revision 307729
1145256Sjkoshy# 2177107Sjkoshy# Example configuration file. 3145256Sjkoshy# 4145256Sjkoshy# See unbound.conf(5) man page, version 1.5.10. 5145256Sjkoshy# 6145256Sjkoshy# this is a comment. 7145256Sjkoshy 8145256Sjkoshy#Use this to include other text into the file. 9145256Sjkoshy#include: "otherfile.conf" 10145256Sjkoshy 11145256Sjkoshy# The server clause sets the main parameters. 12145256Sjkoshyserver: 13145256Sjkoshy # whitespace is not necessary, but looks cleaner. 14145256Sjkoshy 15145256Sjkoshy # verbosity number, 0 is least verbose. 1 is default. 16145256Sjkoshy verbosity: 1 17145256Sjkoshy 18145256Sjkoshy # print statistics to the log (for every thread) every N seconds. 19145256Sjkoshy # Set to "" or 0 to disable. Default is disabled. 20145256Sjkoshy # statistics-interval: 0 21145256Sjkoshy 22145256Sjkoshy # enable cumulative statistics, without clearing them after printing. 23145256Sjkoshy # statistics-cumulative: no 24145256Sjkoshy 25145256Sjkoshy # enable extended statistics (query types, answer codes, status) 26145256Sjkoshy # printed from unbound-control. default off, because of speed. 27145256Sjkoshy # extended-statistics: no 28145256Sjkoshy 29145256Sjkoshy # number of threads to create. 1 disables threading. 30145256Sjkoshy # num-threads: 1 31261342Sjhibbits 32145256Sjkoshy # specify the interfaces to answer queries from by ip-address. 33145256Sjkoshy # The default is to listen to localhost (127.0.0.1 and ::1). 34145256Sjkoshy # specify 0.0.0.0 and ::0 to bind to all available interfaces. 35145256Sjkoshy # specify every interface[@port] on a new 'interface:' labelled line. 36145256Sjkoshy # The listen interfaces are not changed on reload, only on restart. 37145256Sjkoshy # interface: 192.0.2.153 38145256Sjkoshy # interface: 192.0.2.154 39145256Sjkoshy # interface: 192.0.2.154@5003 40145256Sjkoshy # interface: 2001:DB8::5 41145256Sjkoshy 42145256Sjkoshy # enable this feature to copy the source address of queries to reply. 43145256Sjkoshy # Socket options are not supported on all platforms. experimental. 44145256Sjkoshy # interface-automatic: no 45145256Sjkoshy 46185363Sjkoshy # port to answer queries from 47185363Sjkoshy # port: 53 48145256Sjkoshy 49145340Smarcel # specify the interfaces to send outgoing queries to authoritative 50145256Sjkoshy # server from by ip-address. If none, the default (all) interface 51145256Sjkoshy # is used. Specify every interface on a 'outgoing-interface:' line. 52147191Sjkoshy # outgoing-interface: 192.0.2.153 53147759Sjkoshy # outgoing-interface: 2001:DB8::5 54185363Sjkoshy # outgoing-interface: 2001:DB8::6 55185363Sjkoshy 56185363Sjkoshy # Specify a netblock to use remainder 64 bits as random bits for 57185363Sjkoshy # upstream queries. Uses freebind option (Linux). 58206089Sfabient # outgoing-interface: 2001:DB8::/64 59206089Sfabient # Also (Linux:) ip -6 addr add 2001:db8::/64 dev lo 60206089Sfabient # And: ip -6 route add local 2001:db8::/64 dev lo 61206089Sfabient # And set prefer-ip6: yes to use the ip6 randomness from a netblock. 62147191Sjkoshy # Set this to yes to prefer ipv6 upstream servers over ipv4. 63145256Sjkoshy # prefer-ip6: no 64147759Sjkoshy 65147759Sjkoshy # number of ports to allocate per thread, determines the size of the 66147191Sjkoshy # port range that can be open simultaneously. About double the 67147191Sjkoshy # num-queries-per-thread, or, use as many as the OS will allow you. 68145256Sjkoshy # outgoing-range: 4096 69145256Sjkoshy 70147191Sjkoshy # permit unbound to use this port number or port range for 71145256Sjkoshy # making outgoing queries, using an outgoing interface. 72145256Sjkoshy # outgoing-port-permit: 32768 73183725Sjkoshy 74183725Sjkoshy # deny unbound the use this of port number or port range for 75183725Sjkoshy # making outgoing queries, using an outgoing interface. 76183725Sjkoshy # Use this to make sure unbound does not grab a UDP port that some 77277835Sbr # other server on this computer needs. The default is to avoid 78200928Srpaulo # IANA-assigned port numbers. 79200928Srpaulo # If multiple outgoing-port-permit and outgoing-port-avoid options 80200928Srpaulo # are present, they are processed in order. 81200928Srpaulo # outgoing-port-avoid: "3200-3208" 82277835Sbr 83277835Sbr # number of outgoing simultaneous tcp buffers to hold per thread. 84277835Sbr # outgoing-num-tcp: 10 85283112Sbr 86283112Sbr # number of incoming simultaneous tcp buffers to hold per thread. 87283112Sbr # incoming-num-tcp: 10 88283112Sbr 89204635Sgnn # buffer size for UDP port 53 incoming (SO_RCVBUF socket option). 90233320Sgonzo # 0 is system default. Use 4m to catch query spikes for busy servers. 91204635Sgnn # so-rcvbuf: 0 92204635Sgnn 93233628Sfabient # buffer size for UDP port 53 outgoing (SO_SNDBUF socket option). 94233628Sfabient # 0 is system default. Use 4m to handle spikes on very busy servers. 95204635Sgnn # so-sndbuf: 0 96228869Sjhibbits 97261342Sjhibbits # use SO_REUSEPORT to distribute queries over threads. 98228869Sjhibbits # so-reuseport: no 99228869Sjhibbits 100204635Sgnn # use IP_TRANSPARENT so the interface: addresses can be non-local 101145256Sjkoshy # and you can config non-existing IPs that are going to work later on 102145256Sjkoshy # (uses IP_BINDANY on FreeBSD). 103145256Sjkoshy # ip-transparent: no 104145256Sjkoshy 105145256Sjkoshy # use IP_FREEBIND so the interface: addresses can be non-local 106145256Sjkoshy # and you can bind to nonexisting IPs and interfaces that are down. 107145256Sjkoshy # Linux only. On Linux you also have ip-transparent that is similar. 108145256Sjkoshy # ip-freebind: no 109145256Sjkoshy 110145256Sjkoshy # EDNS reassembly buffer to advertise to UDP peers (the actual buffer 111145256Sjkoshy # is set with msg-buffer-size). 1480 can solve fragmentation (timeouts). 112145256Sjkoshy # edns-buffer-size: 4096 113145256Sjkoshy 114145256Sjkoshy # Maximum UDP response size (not applied to TCP response). 115145256Sjkoshy # Suggested values are 512 to 4096. Default is 4096. 65536 disables it. 116145256Sjkoshy # max-udp-size: 4096 117145256Sjkoshy 118183725Sjkoshy # buffer size for handling DNS data. No messages larger than this 119145256Sjkoshy # size can be sent or received, by UDP or TCP. In bytes. 120145256Sjkoshy # msg-buffer-size: 65552 121145256Sjkoshy 122145256Sjkoshy # the amount of memory to use for the message cache. 123145256Sjkoshy # plain value in bytes or you can append k, m or G. default is "4Mb". 124145256Sjkoshy # msg-cache-size: 4m 125145256Sjkoshy 126183725Sjkoshy # the number of slabs to use for the message cache. 127183725Sjkoshy # the number of slabs must be a power of 2. 128183725Sjkoshy # more slabs reduce lock contention, but fragment memory usage. 129183725Sjkoshy # msg-cache-slabs: 4 130183725Sjkoshy 131183725Sjkoshy # the number of queries that a thread gets to service. 132183725Sjkoshy # num-queries-per-thread: 1024 133183725Sjkoshy 134183725Sjkoshy # if very busy, 50% queries run to completion, 50% get timeout in msec 135183725Sjkoshy # jostle-timeout: 200 136183725Sjkoshy 137183725Sjkoshy # msec to wait before close of port on timeout UDP. 0 disables. 138183725Sjkoshy # delay-close: 0 139183725Sjkoshy 140183725Sjkoshy # the amount of memory to use for the RRset cache. 141183725Sjkoshy # plain value in bytes or you can append k, m or G. default is "4Mb". 142183725Sjkoshy # rrset-cache-size: 4m 143183725Sjkoshy 144183725Sjkoshy # the number of slabs to use for the RRset cache. 145183725Sjkoshy # the number of slabs must be a power of 2. 146183725Sjkoshy # more slabs reduce lock contention, but fragment memory usage. 147185363Sjkoshy # rrset-cache-slabs: 4 148183725Sjkoshy 149185363Sjkoshy # the time to live (TTL) value lower bound, in seconds. Default 0. 150183725Sjkoshy # If more than an hour could easily give trouble due to stale data. 151185363Sjkoshy # cache-min-ttl: 0 152183725Sjkoshy 153183725Sjkoshy # the time to live (TTL) value cap for RRsets and messages in the 154183725Sjkoshy # cache. Items are not cached for longer. In seconds. 155185363Sjkoshy # cache-max-ttl: 86400 156185363Sjkoshy 157185363Sjkoshy # the time to live (TTL) value cap for negative responses in the cache 158185363Sjkoshy # cache-max-negative-ttl: 3600 159185363Sjkoshy 160185363Sjkoshy # the time to live (TTL) value for cached roundtrip times, lameness and 161185363Sjkoshy # EDNS version information for hosts. In seconds. 162185363Sjkoshy # infra-host-ttl: 900 163200928Srpaulo 164277835Sbr # minimum wait time for responses, increase if uplink is long. In msec. 165283112Sbr # infra-cache-min-rtt: 50 166204635Sgnn 167281098Sadrian # the number of slabs to use for the Infrastructure cache. 168233335Sgonzo # the number of slabs must be a power of 2. 169206089Sfabient # more slabs reduce lock contention, but fragment memory usage. 170228869Sjhibbits # infra-cache-slabs: 4 171261342Sjhibbits 172281713Sjhibbits # the maximum number of hosts that are cached (roundtrip, EDNS, lame). 173185363Sjkoshy # infra-cache-numhosts: 10000 174233628Sfabient 175233628Sfabient # define a number of tags here, use with local-zone, access-control. 176185363Sjkoshy # repeat the define-tag statement to add additional tags. 177185363Sjkoshy # define-tag: "tag1 tag2 tag3" 178185363Sjkoshy 179185363Sjkoshy # Enable IPv4, "yes" or "no". 180185363Sjkoshy # do-ip4: yes 181185363Sjkoshy 182185363Sjkoshy # Enable IPv6, "yes" or "no". 183185363Sjkoshy # do-ip6: yes 184263446Shiren 185263446Shiren # Enable UDP, "yes" or "no". 186263446Shiren # do-udp: yes 187263446Shiren 188263446Shiren # Enable TCP, "yes" or "no". 189185363Sjkoshy # do-tcp: yes 190185363Sjkoshy 191185363Sjkoshy # upstream connections use TCP only (and no UDP), "yes" or "no" 192185363Sjkoshy # useful for tunneling scenarios, default no. 193185363Sjkoshy # tcp-upstream: no 194185363Sjkoshy 195185363Sjkoshy # Maximum segment size (MSS) of TCP socket on which the server 196185363Sjkoshy # responds to queries. Default is 0, system default MSS. 197185363Sjkoshy # tcp-mss: 0 198185363Sjkoshy 199185363Sjkoshy # Maximum segment size (MSS) of TCP socket for outgoing queries. 200187761Sjeff # Default is 0, system default MSS. 201187761Sjeff # outgoing-tcp-mss: 0 202187761Sjeff 203187761Sjeff # Detach from the terminal, run in background, "yes" or "no". 204187761Sjeff # do-daemonize: yes 205267062Skib 206267062Skib # control which clients are allowed to make (recursive) queries 207267062Skib # to this server. Specify classless netblocks with /size and action. 208267062Skib # By default everything is refused, except for localhost. 209267062Skib # Choose deny (drop message), refuse (polite error reply), 210248842Ssbruno # allow (recursive ok), allow_snoop (recursive and nonrecursive ok) 211248842Ssbruno # deny_non_local (drop queries unless can be answered from local-data) 212248842Ssbruno # refuse_non_local (like deny_non_local but polite error reply). 213248842Ssbruno # access-control: 0.0.0.0/0 refuse 214248842Ssbruno # access-control: 127.0.0.0/8 allow 215277177Srrs # access-control: ::0/0 refuse 216277177Srrs # access-control: ::1 allow 217277177Srrs # access-control: ::ffff:127.0.0.1 allow 218277177Srrs 219277177Srrs # tag access-control with list of tags (in "" with spaces between) 220291494Srrs # Clients using this access control element use localzones that 221291494Srrs # are tagged with one of these tags. 222291494Srrs # access-control-tag: 192.0.2.0/24 "tag2 tag3" 223291494Srrs 224277177Srrs # set action for particular tag for given access control element 225291494Srrs # if you have multiple tag values, the tag used to lookup the action 226291494Srrs # is the first tag match between access-control-tag and local-zone-tag 227291494Srrs # where "first" comes from the order of the define-tag values. 228291494Srrs # access-control-tag-action: 192.0.2.0/24 tag3 refuse 229291494Srrs 230291494Srrs # set redirect data for particular tag for access control element 231291494Srrs # access-control-tag-data: 192.0.2.0/24 tag2 "A 127.0.0.1" 232291494Srrs 233291494Srrs # if given, a chroot(2) is done to the given directory. 234291494Srrs # i.e. you can chroot to the working directory, for example, 235240164Sfabient # for extra security, but make sure all files are in that directory. 236240164Sfabient # 237240164Sfabient # If chroot is enabled, you should pass the configfile (from the 238240164Sfabient # commandline) as a full path from the original root. After the 239240164Sfabient # chroot has been performed the now defunct portion of the config 240246166Ssbruno # file path is removed to be able to reread the config after a reload. 241246166Ssbruno # 242246166Ssbruno # All other file paths (working dir, logfile, roothints, and 243246166Ssbruno # key files) can be specified in several ways: 244246166Ssbruno # o as an absolute path relative to the new root. 245232366Sdavide # o as a relative path to the working directory. 246232366Sdavide # o as an absolute path relative to the original root. 247232366Sdavide # In the last case the path is adjusted to remove the unused portion. 248232366Sdavide # 249232366Sdavide # The pid file can be absolute and outside of the chroot, it is 250241738Ssbruno # written just prior to performing the chroot and dropping permissions. 251241738Ssbruno # 252241738Ssbruno # Additionally, unbound may need to access /dev/random (for entropy). 253241738Ssbruno # How to do this is specific to your OS. 254241738Ssbruno # 255206089Sfabient # If you give "" no chroot is performed. The path must not end in a /. 256206089Sfabient # chroot: "/var/unbound" 257206089Sfabient 258206089Sfabient # if given, user privileges are dropped (after binding port), 259206089Sfabient # and the given username is assumed. Default is user "unbound". 260267062Skib # If you give "" no privileges are dropped. 261267062Skib # username: "unbound" 262267062Skib 263267062Skib # the working directory. The relative files in this config are 264267062Skib # relative to this directory. If you give "" the working directory 265206089Sfabient # is not changed. 266206089Sfabient # If you give a server: directory: dir before include: file statements 267206089Sfabient # then those includes can be relative to the working directory. 268206089Sfabient # directory: "/var/unbound" 269206089Sfabient 270248842Ssbruno # the log file, "" means log to stderr. 271248842Ssbruno # Use of this option sets use-syslog to "no". 272248842Ssbruno # logfile: "" 273248842Ssbruno 274248842Ssbruno # Log to syslog(3) if yes. The log facility LOG_DAEMON is used to 275291494Srrs # log to, with identity "unbound". If yes, it overrides the logfile. 276291494Srrs # use-syslog: yes 277291494Srrs 278291494Srrs # print UTC timestamp in ascii to logfile, default is epoch in seconds. 279291494Srrs # log-time-ascii: no 280232366Sdavide 281232366Sdavide # print one line with time, IP, name, type, class for every query. 282232366Sdavide # log-queries: no 283232366Sdavide 284232366Sdavide # the pid file. Can be an absolute path outside of chroot/work dir. 285206089Sfabient # pidfile: "/var/unbound/unbound.pid" 286206089Sfabient 287206089Sfabient # file to read root hints from. 288206089Sfabient # get one from https://www.internic.net/domain/named.cache 289206089Sfabient # root-hints: "" 290284218Sbr 291284218Sbr # enable to not answer id.server and hostname.bind queries. 292284218Sbr # hide-identity: no 293284218Sbr 294284218Sbr # enable to not answer version.server and version.bind queries. 295284218Sbr # hide-version: no 296284218Sbr 297284218Sbr # the identity to report. Leave "" or default to return hostname. 298284218Sbr # identity: "" 299284218Sbr 300283112Sbr # the version to report. Leave "" or default to return package version. 301283112Sbr # version: "" 302283112Sbr 303283112Sbr # the target fetch policy. 304283112Sbr # series of integers describing the policy per dependency depth. 305283112Sbr # The number of values in the list determines the maximum dependency 306283112Sbr # depth the recursor will pursue before giving up. Each integer means: 307283112Sbr # -1 : fetch all targets opportunistically, 308283112Sbr # 0: fetch on demand, 309283112Sbr # positive value: fetch that many targets opportunistically. 310185363Sjkoshy # Enclose the list of numbers between quotes (""). 311185363Sjkoshy # target-fetch-policy: "3 2 1 0 0" 312185363Sjkoshy 313185363Sjkoshy # Harden against very small EDNS buffer sizes. 314185363Sjkoshy # harden-short-bufsize: no 315185363Sjkoshy 316183725Sjkoshy # Harden against unseemly large queries. 317183725Sjkoshy # harden-large-queries: no 318183725Sjkoshy 319183725Sjkoshy # Harden against out of zone rrsets, to avoid spoofing attempts. 320233628Sfabient # harden-glue: yes 321263446Shiren 322233628Sfabient # Harden against receiving dnssec-stripped data. If you turn it 323233628Sfabient # off, failing to validate dnskey data for a trustanchor will 324233628Sfabient # trigger insecure mode for that zone (like without a trustanchor). 325267062Skib # Default on, which insists on dnssec data for trust-anchored zones. 326248842Ssbruno # harden-dnssec-stripped: yes 327277177Srrs 328291494Srrs # Harden against queries that fall under dnssec-signed nxdomain names. 329291494Srrs # harden-below-nxdomain: no 330291494Srrs 331240164Sfabient # Harden the referral path by performing additional queries for 332246166Ssbruno # infrastructure data. Validates the replies (if possible). 333233628Sfabient # Default off, because the lookups burden the server. Experimental 334241738Ssbruno # implementation of draft-wijngaards-dnsext-resolver-side-mitigation. 335233628Sfabient # harden-referral-path: no 336267062Skib 337233628Sfabient # Harden against algorithm downgrade when multiple algorithms are 338233628Sfabient # advertised in the DS record. If no, allows the weakest algorithm 339233628Sfabient # to validate the zone. 340233628Sfabient # harden-algo-downgrade: no 341233628Sfabient 342233628Sfabient # Sent minimum amount of information to upstream servers to enhance 343284218Sbr # privacy. Only sent minimum required labels of the QNAME and set QTYPE 344284218Sbr # to NS when possible. 345283112Sbr # qname-minimisation: no 346283112Sbr 347233628Sfabient # Use 0x20-encoded random bits in the query to foil spoof attempts. 348281098Sadrian # This feature is an experimental implementation of draft dns-0x20. 349233628Sfabient # use-caps-for-id: no 350281713Sjhibbits 351281713Sjhibbits # Domains (and domains in them) without support for dns-0x20 and 352281713Sjhibbits # the fallback fails because they keep sending different answers. 353233628Sfabient # caps-whitelist: "licdn.com" 354183725Sjkoshy # caps-whitelist: "senderbase.org" 355183725Sjkoshy 356145256Sjkoshy # Enforce privacy of these addresses. Strips them away from answers. 357183725Sjkoshy # It may cause DNSSEC validation to additionally mark it as bogus. 358145256Sjkoshy # Protects against 'DNS Rebinding' (uses browser as network proxy). 359145256Sjkoshy # Only 'private-domain' and 'local-data' names are allowed to have 360183725Sjkoshy # these private addresses. No default. 361185363Sjkoshy # private-address: 10.0.0.0/8 362185363Sjkoshy # private-address: 172.16.0.0/12 363185363Sjkoshy # private-address: 192.168.0.0/16 364185363Sjkoshy # private-address: 169.254.0.0/16 365185363Sjkoshy # private-address: fd00::/8 366185363Sjkoshy # private-address: fe80::/10 367185363Sjkoshy # private-address: ::ffff:0:0/96 368183725Sjkoshy 369185363Sjkoshy # Allow the domain (and its subdomains) to contain private addresses. 370185363Sjkoshy # local-data statements are allowed to contain private addresses too. 371183725Sjkoshy # private-domain: "example.com" 372183725Sjkoshy 373185363Sjkoshy # If nonzero, unwanted replies are not only reported in statistics, 374185363Sjkoshy # but also a running total is kept per thread. If it reaches the 375185363Sjkoshy # threshold, a warning is printed and a defensive action is taken, 376263446Shiren # the cache is cleared to flush potential poison out of it. 377185363Sjkoshy # A suggested value is 10000000, the default is 0 (turned off). 378185363Sjkoshy # unwanted-reply-threshold: 0 379187761Sjeff 380267062Skib # Do not query the following addresses. No DNS queries are sent there. 381248842Ssbruno # List one address per entry. List classless netblocks with /size, 382279833Srstone # do-not-query-address: 127.0.0.1/8 383291494Srrs # do-not-query-address: ::1 384291494Srrs 385291494Srrs # if yes, the above default do-not-query-address entries are present. 386240164Sfabient # if no, localhost can be queried (for testing and debugging). 387246166Ssbruno # do-not-query-localhost: yes 388232366Sdavide 389241738Ssbruno # if yes, perform prefetching of almost expired message cache entries. 390206089Sfabient # prefetch: no 391267062Skib 392206089Sfabient # if yes, perform key lookups adjacent to normal lookups. 393206089Sfabient # prefetch-key: no 394248842Ssbruno 395291494Srrs # if yes, Unbound rotates RRSet order in response. 396232366Sdavide # rrset-roundrobin: no 397206089Sfabient 398185363Sjkoshy # if yes, Unbound doesn't insert authority/additional sections 399183725Sjkoshy # into response messages when those sections are not required. 400185363Sjkoshy # minimal-responses: no 401183725Sjkoshy 402183725Sjkoshy # true to disable DNSSEC lameness check in iterator. 403185363Sjkoshy # disable-dnssec-lame-check: no 404185363Sjkoshy 405183725Sjkoshy # module configuration of the server. A string with identifiers 406183725Sjkoshy # separated by spaces. Syntax: "[dns64] [validator] iterator" 407185363Sjkoshy # module-config: "validator iterator" 408185363Sjkoshy 409183725Sjkoshy # File with trusted keys, kept uptodate using RFC5011 probes, 410183725Sjkoshy # initial file like trust-anchor-file, then it stores metadata. 411185363Sjkoshy # Use several entries, one per domain name, to track multiple zones. 412183725Sjkoshy # 413277835Sbr # If you want to perform DNSSEC validation, run unbound-anchor before 414200928Srpaulo # you start unbound (i.e. in the system boot scripts). And enable: 415200928Srpaulo # Please note usage of unbound-anchor root anchor is at your own risk 416200928Srpaulo # and under the terms of our LICENSE (see that file in the source). 417289317Sbz # auto-trust-anchor-file: "/var/unbound/root.key" 418284218Sbr 419277835Sbr # File with DLV trusted keys. Same format as trust-anchor-file. 420283112Sbr # There can be only one DLV configured, it is trusted from root down. 421283112Sbr # DLV is going to be decommissioned. Please do not use it any more. 422283112Sbr # dlv-anchor-file: "dlv.isc.org.key" 423283112Sbr 424204635Sgnn # File with trusted keys for validation. Specify more than one file 425233320Sgonzo # with several entries, one file per entry. 426281098Sadrian # Zone file format, with DS and DNSKEY entries. 427233335Sgonzo # Note this gets out of date, use auto-trust-anchor-file please. 428204635Sgnn # trust-anchor-file: "" 429228869Sjhibbits 430261342Sjhibbits # Trusted key for validation. DS or DNSKEY. specify the RR on a 431261342Sjhibbits # single line, surrounded by "". TTL is ignored. class is IN default. 432281713Sjhibbits # Note this gets out of date, use auto-trust-anchor-file please. 433228869Sjhibbits # (These examples are from August 2007 and may not be valid anymore). 434228869Sjhibbits # trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ==" 435233628Sfabient # trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A" 436233628Sfabient 437233628Sfabient # File with trusted keys for validation. Specify more than one file 438233628Sfabient # with several entries, one file per entry. Like trust-anchor-file 439233628Sfabient # but has a different file format. Format is BIND-9 style format, 440233628Sfabient # the trusted-keys { name flag proto algo "key"; }; clauses are read. 441233628Sfabient # you need external update procedures to track changes in keys. 442233628Sfabient # trusted-keys-file: "" 443233628Sfabient 444233628Sfabient # Ignore chain of trust. Domain is treated as insecure. 445183725Sjkoshy # domain-insecure: "example.com" 446183725Sjkoshy 447185363Sjkoshy # Override the date for validation with a specific fixed date. 448185363Sjkoshy # Do not set this unless you are debugging signature inception 449185363Sjkoshy # and expiration. "" or "0" turns the feature off. -1 ignores date. 450183725Sjkoshy # val-override-date: "" 451183725Sjkoshy 452183725Sjkoshy # The time to live for bogus data, rrsets and messages. This avoids 453145256Sjkoshy # some of the revalidation, until the time interval expires. in secs. 454145256Sjkoshy # val-bogus-ttl: 60 455145256Sjkoshy 456145256Sjkoshy # The signature inception and expiration dates are allowed to be off 457145256Sjkoshy # by 10% of the signature lifetime (expir-incep) from our local clock. 458145256Sjkoshy # This leeway is capped with a minimum and a maximum. In seconds. 459145256Sjkoshy # val-sig-skew-min: 3600 460145256Sjkoshy # val-sig-skew-max: 86400 461145256Sjkoshy 462145256Sjkoshy # Should additional section of secure message also be kept clean of 463145256Sjkoshy # unsecure data. Useful to shield the users of this validator from 464283120Sjhb # potential bogus data in the additional section. All unsigned data 465283120Sjhb # in the additional section is removed from secure messages. 466283120Sjhb # val-clean-additional: yes 467283120Sjhb 468283120Sjhb # Turn permissive mode on to permit bogus messages. Thus, messages 469283120Sjhb # for which security checks failed will be returned to clients, 470145256Sjkoshy # instead of SERVFAIL. It still performs the security checks, which 471283120Sjhb # result in interesting log files and possibly the AD bit in 472145256Sjkoshy # replies if the message is found secure. The default is off. 473145256Sjkoshy # val-permissive-mode: no 474145256Sjkoshy 475183725Sjkoshy # Ignore the CD flag in incoming queries and refuse them bogus data. 476228557Sdim # Enable it if the only clients of unbound are legacy servers (w2008) 477183725Sjkoshy # that set CD but cannot validate themselves. 478183725Sjkoshy # ignore-cd-flag: no 479183725Sjkoshy 480183725Sjkoshy # Have the validator log failed validations for your diagnosis. 481145256Sjkoshy # 0: off. 1: A line per failed user query. 2: With reason and bad IP. 482183725Sjkoshy # val-log-level: 0 483145256Sjkoshy 484145256Sjkoshy # It is possible to configure NSEC3 maximum iteration counts per 485145256Sjkoshy # keysize. Keep this table very short, as linear search is done. 486145256Sjkoshy # A message with an NSEC3 with larger count is marked insecure. 487145256Sjkoshy # List in ascending order the keysize and count values. 488145256Sjkoshy # val-nsec3-keysize-iterations: "1024 150 2048 500 4096 2500" 489145256Sjkoshy 490145256Sjkoshy # instruct the auto-trust-anchor-file probing to add anchors after ttl. 491145256Sjkoshy # add-holddown: 2592000 # 30 days 492145256Sjkoshy 493145256Sjkoshy # instruct the auto-trust-anchor-file probing to del anchors after ttl. 494145256Sjkoshy # del-holddown: 2592000 # 30 days 495145256Sjkoshy 496145256Sjkoshy # auto-trust-anchor-file probing removes missing anchors after ttl. 497145256Sjkoshy # If the value 0 is given, missing anchors are not removed. 498145256Sjkoshy # keep-missing: 31622400 # 366 days 499145256Sjkoshy 500145256Sjkoshy # debug option that allows very small holddown times for key rollover, 501145256Sjkoshy # otherwise the RFC mandates probe intervals must be at least 1 hour. 502145256Sjkoshy # permit-small-holddown: no 503145256Sjkoshy 504233628Sfabient # the amount of memory to use for the key cache. 505233628Sfabient # plain value in bytes or you can append k, m or G. default is "4Mb". 506233628Sfabient # key-cache-size: 4m 507233628Sfabient 508233628Sfabient # the number of slabs to use for the key cache. 509233628Sfabient # the number of slabs must be a power of 2. 510145256Sjkoshy # more slabs reduce lock contention, but fragment memory usage. 511145256Sjkoshy # key-cache-slabs: 4 512145256Sjkoshy 513145256Sjkoshy # the amount of memory to use for the negative cache (used for DLV). 514240164Sfabient # plain value in bytes or you can append k, m or G. default is "1Mb". 515145256Sjkoshy # neg-cache-size: 1m 516145256Sjkoshy 517206089Sfabient # By default, for a number of zones a small default 'nothing here' 518145256Sjkoshy # reply is built-in. Query traffic is thus blocked. If you 519147759Sjkoshy # wish to serve such zone you can unblock them by uncommenting one 520145256Sjkoshy # of the nodefault statements below. 521240164Sfabient # You may also have to use domain-insecure: zone to make DNSSEC work, 522145256Sjkoshy # unless you have your own trust anchors for this zone. 523145256Sjkoshy # local-zone: "localhost." nodefault 524145256Sjkoshy # local-zone: "127.in-addr.arpa." nodefault 525145256Sjkoshy # 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 526145256Sjkoshy # local-zone: "onion." nodefault 527145256Sjkoshy # local-zone: "10.in-addr.arpa." nodefault 528174406Sjkoshy # local-zone: "16.172.in-addr.arpa." nodefault 529183107Sjkoshy # local-zone: "17.172.in-addr.arpa." nodefault 530145256Sjkoshy # local-zone: "18.172.in-addr.arpa." nodefault 531174406Sjkoshy # local-zone: "19.172.in-addr.arpa." nodefault 532145256Sjkoshy # local-zone: "20.172.in-addr.arpa." nodefault 533145256Sjkoshy # local-zone: "21.172.in-addr.arpa." nodefault 534183725Sjkoshy # local-zone: "22.172.in-addr.arpa." nodefault 535183725Sjkoshy # local-zone: "23.172.in-addr.arpa." nodefault 536145256Sjkoshy # local-zone: "24.172.in-addr.arpa." nodefault 537145256Sjkoshy # local-zone: "25.172.in-addr.arpa." nodefault 538174406Sjkoshy # local-zone: "26.172.in-addr.arpa." nodefault 539145256Sjkoshy # local-zone: "27.172.in-addr.arpa." nodefault 540145256Sjkoshy # local-zone: "28.172.in-addr.arpa." nodefault 541145256Sjkoshy # local-zone: "29.172.in-addr.arpa." nodefault 542174406Sjkoshy # local-zone: "30.172.in-addr.arpa." nodefault 543145256Sjkoshy # local-zone: "31.172.in-addr.arpa." nodefault 544145340Smarcel # local-zone: "168.192.in-addr.arpa." nodefault 545145256Sjkoshy # local-zone: "0.in-addr.arpa." nodefault 546145256Sjkoshy # local-zone: "254.169.in-addr.arpa." nodefault 547145256Sjkoshy # local-zone: "2.0.192.in-addr.arpa." nodefault 548145256Sjkoshy # local-zone: "100.51.198.in-addr.arpa." nodefault 549145256Sjkoshy # local-zone: "113.0.203.in-addr.arpa." nodefault 550145340Smarcel # local-zone: "255.255.255.255.in-addr.arpa." nodefault 551145256Sjkoshy # 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 552145256Sjkoshy # local-zone: "d.f.ip6.arpa." nodefault 553145256Sjkoshy # local-zone: "8.e.f.ip6.arpa." nodefault 554145256Sjkoshy # local-zone: "9.e.f.ip6.arpa." nodefault 555145256Sjkoshy # local-zone: "a.e.f.ip6.arpa." nodefault 556145256Sjkoshy # local-zone: "b.e.f.ip6.arpa." nodefault 557145351Sjkoshy # local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault 558145351Sjkoshy # And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa. 559145351Sjkoshy 560183075Sjkoshy # If unbound is running service for the local host then it is useful 561145351Sjkoshy # to perform lan-wide lookups to the upstream, and unblock the 562145351Sjkoshy # long list of local-zones above. If this unbound is a dns server 563145351Sjkoshy # for a network of computers, disabled is better and stops information 564145351Sjkoshy # leakage of local lan information. 565145256Sjkoshy # unblock-lan-zones: no 566145256Sjkoshy 567145256Sjkoshy # The insecure-lan-zones option disables validation for 568145256Sjkoshy # these zones, as if they were all listed as domain-insecure. 569145256Sjkoshy # insecure-lan-zones: no 570145256Sjkoshy 571145256Sjkoshy # a number of locally served zones can be configured. 572145256Sjkoshy # local-zone: <zone> <type> 573145256Sjkoshy # local-data: "<resource record string>" 574145256Sjkoshy # o deny serves local data (if any), else, drops queries. 575145256Sjkoshy # o refuse serves local data (if any), else, replies with error. 576145256Sjkoshy # o static serves local data, else, nxdomain or nodata answer. 577145256Sjkoshy # o transparent gives local data, but resolves normally for other names 578183107Sjkoshy # o redirect serves the zone data for any subdomain in the zone. 579183107Sjkoshy # o nodefault can be used to normally resolve AS112 zones. 580145256Sjkoshy # o typetransparent resolves normally for other types and other names 581145256Sjkoshy # o inform resolves normally, but logs client IP address 582147191Sjkoshy # o inform_deny drops queries and logs client IP address 583183725Sjkoshy # o always_transparent, always_refuse, always_nxdomain, resolve in 584145256Sjkoshy # that way but ignore local data for that name. 585145256Sjkoshy # 586145256Sjkoshy # defaults are localhost address, reverse for 127.0.0.1 and ::1 587145256Sjkoshy # and nxdomain for AS112 zones. If you configure one of these zones 588145256Sjkoshy # the default content is omitted, or you can omit it with 'nodefault'. 589147191Sjkoshy # 590145256Sjkoshy # If you configure local-data without specifying local-zone, by 591145256Sjkoshy # default a transparent local-zone is created for the data. 592145256Sjkoshy # 593145256Sjkoshy # You can add locally served data with 594145256Sjkoshy # local-zone: "local." static 595145256Sjkoshy # local-data: "mycomputer.local. IN A 192.0.2.51" 596145256Sjkoshy # local-data: 'mytext.local TXT "content of text record"' 597174406Sjkoshy # 598145256Sjkoshy # You can override certain queries with 599145256Sjkoshy # local-data: "adserver.example.com A 127.0.0.1" 600145256Sjkoshy # 601174406Sjkoshy # You can redirect a domain to a fixed address with 602145256Sjkoshy # (this makes example.com, www.example.com, etc, all go to 192.0.2.3) 603145256Sjkoshy # local-zone: "example.com" redirect 604147191Sjkoshy # local-data: "example.com A 192.0.2.3" 605147191Sjkoshy # 606145256Sjkoshy # Shorthand to make PTR records, "IPv4 name" or "IPv6 name". 607145256Sjkoshy # You can also add PTR records using local-data directly, but then 608145256Sjkoshy # you need to do the reverse notation yourself. 609145256Sjkoshy # local-data-ptr: "192.0.2.3 www.example.com" 610145256Sjkoshy 611145256Sjkoshy # tag a localzone with a list of tag names (in "" with spaces between) 612145256Sjkoshy # local-zone-tag: "example.com" "tag2 tag3" 613145256Sjkoshy 614145256Sjkoshy # add a netblock specific override to a localzone, with zone type 615174406Sjkoshy # local-zone-override: "example.com" 192.0.2.0/24 refuse 616145256Sjkoshy 617145256Sjkoshy # service clients over SSL (on the TCP sockets), with plain DNS inside 618145256Sjkoshy # the SSL stream. Give the certificate to use and private key. 619174406Sjkoshy # default is "" (disabled). requires restart to take effect. 620145256Sjkoshy # ssl-service-key: "path/to/privatekeyfile.key" 621145256Sjkoshy # ssl-service-pem: "path/to/publiccertfile.pem" 622145256Sjkoshy # ssl-port: 853 623147191Sjkoshy 624145256Sjkoshy # request upstream over SSL (with plain DNS inside the SSL stream). 625147191Sjkoshy # Default is no. Can be turned on and off with unbound-control. 626145256Sjkoshy # ssl-upstream: no 627147191Sjkoshy 628145256Sjkoshy # DNS64 prefix. Must be specified when DNS64 is use. 629147191Sjkoshy # Enable dns64 in module-config. Used to synthesize IPv6 from IPv4. 630145256Sjkoshy # dns64-prefix: 64:ff9b::0/96 631147191Sjkoshy 632145256Sjkoshy # ratelimit for uncached, new queries, this limits recursion effort. 633145256Sjkoshy # ratelimiting is experimental, and may help against randomqueryflood. 634145256Sjkoshy # if 0(default) it is disabled, otherwise state qps allowed per zone. 635174406Sjkoshy # ratelimit: 0 636145256Sjkoshy 637145256Sjkoshy # ratelimits are tracked in a cache, size in bytes of cache (or k,m). 638174406Sjkoshy # ratelimit-size: 4m 639145256Sjkoshy # ratelimit cache slabs, reduces lock contention if equal to cpucount. 640145256Sjkoshy # ratelimit-slabs: 4 641145256Sjkoshy 642145256Sjkoshy # 0 blocks when ratelimited, otherwise let 1/xth traffic through 643174406Sjkoshy # ratelimit-factor: 10 644145256Sjkoshy 645145256Sjkoshy # override the ratelimit for a specific domain name. 646145256Sjkoshy # give this setting multiple times to have multiple overrides. 647145256Sjkoshy # ratelimit-for-domain: example.com 1000 648147191Sjkoshy # override the ratelimits for all domains below a domain name 649147191Sjkoshy # can give this multiple times, the name closest to the zone is used. 650145256Sjkoshy # ratelimit-below-domain: com 1000 651145256Sjkoshy 652174406Sjkoshy# Python config section. To enable: 653145256Sjkoshy# o use --with-pythonmodule to configure before compiling. 654145256Sjkoshy# o list python in the module-config string (above) to enable. 655145256Sjkoshy# o and give a python-script to run. 656147191Sjkoshypython: 657147191Sjkoshy # Script file to load 658147759Sjkoshy # python-script: "/var/unbound/ubmodule-tst.py" 659147191Sjkoshy 660145256Sjkoshy# Remote control config section. 661185363Sjkoshyremote-control: 662185363Sjkoshy # Enable remote control with unbound-control(8) here. 663185363Sjkoshy # set up the keys and certificates with unbound-control-setup. 664185363Sjkoshy # control-enable: no 665185363Sjkoshy 666185363Sjkoshy # Set to no and use an absolute path as control-interface to use 667185363Sjkoshy # a unix local named pipe for unbound-control. 668185363Sjkoshy # control-use-cert: yes 669185363Sjkoshy 670185363Sjkoshy # what interfaces are listened to for remote control. 671185363Sjkoshy # give 0.0.0.0 and ::0 to listen to all interfaces. 672185363Sjkoshy # control-interface: 127.0.0.1 673185363Sjkoshy # control-interface: ::1 674185363Sjkoshy 675185363Sjkoshy # port number for remote control operations. 676185363Sjkoshy # control-port: 8953 677185363Sjkoshy 678198433Sjkoshy # unbound server key file. 679198433Sjkoshy # server-key-file: "/var/unbound/unbound_server.key" 680198433Sjkoshy 681198433Sjkoshy # unbound server certificate file. 682185363Sjkoshy # server-cert-file: "/var/unbound/unbound_server.pem" 683185363Sjkoshy 684185363Sjkoshy # unbound-control key file. 685185363Sjkoshy # control-key-file: "/var/unbound/unbound_control.key" 686185363Sjkoshy 687185363Sjkoshy # unbound-control certificate file. 688185363Sjkoshy # control-cert-file: "/var/unbound/unbound_control.pem" 689185363Sjkoshy 690185363Sjkoshy# Stub zones. 691185363Sjkoshy# Create entries like below, to make all queries for 'example.com' and 692185363Sjkoshy# 'example.org' go to the given list of nameservers. list zero or more 693185363Sjkoshy# nameservers by hostname or by ipaddress. If you set stub-prime to yes, 694185363Sjkoshy# the list is treated as priming hints (default is no). 695198433Sjkoshy# With stub-first yes, it attempts without the stub if it fails. 696198433Sjkoshy# Consider adding domain-insecure: name and local-zone: name nodefault 697198433Sjkoshy# to the server: section if the stub is a locally served zone. 698198433Sjkoshy# stub-zone: 699198433Sjkoshy# name: "example.com" 700198433Sjkoshy# stub-addr: 192.0.2.68 701198433Sjkoshy# stub-prime: no 702198433Sjkoshy# stub-first: no 703198433Sjkoshy# stub-zone: 704198433Sjkoshy# name: "example.org" 705198433Sjkoshy# stub-host: ns.example.com. 706198433Sjkoshy 707198433Sjkoshy# Forward zones 708263446Shiren# Create entries like below, to make all queries for 'example.com' and 709263446Shiren# 'example.org' go to the given list of servers. These servers have to handle 710198433Sjkoshy# recursion to other nameservers. List zero or more nameservers by hostname 711198433Sjkoshy# or by ipaddress. Use an entry with name "." to forward all queries. 712267062Skib# If you enable forward-first, it attempts without the forward if it fails. 713267062Skib# forward-zone: 714248842Ssbruno# name: "example.com" 715248842Ssbruno# forward-addr: 192.0.2.68 716277177Srrs# forward-addr: 192.0.2.73@5355 # forward to port 5355. 717277177Srrs# forward-first: no 718291494Srrs# forward-zone: 719291494Srrs# name: "example.org" 720291494Srrs# forward-host: fwd.example.com 721291494Srrs