example.conf.in revision 296415
1228753Smm#
2228753Smm# Example configuration file.
3228753Smm#
4228753Smm# See unbound.conf(5) man page, version 1.5.8.
5228753Smm#
6228753Smm# this is a comment.
7228753Smm
8228753Smm#Use this to include other text into the file.
9228753Smm#include: "otherfile.conf"
10228753Smm
11228753Smm# The server clause sets the main parameters.
12228753Smmserver:
13228753Smm	# whitespace is not necessary, but looks cleaner.
14228753Smm
15228753Smm	# verbosity number, 0 is least verbose. 1 is default.
16228753Smm	verbosity: 1
17228753Smm
18228753Smm	# print statistics to the log (for every thread) every N seconds.
19228753Smm	# Set to "" or 0 to disable. Default is disabled.
20228753Smm	# statistics-interval: 0
21228753Smm
22228753Smm	# enable cumulative statistics, without clearing them after printing.
23228753Smm	# statistics-cumulative: no
24228753Smm
25228753Smm	# enable extended statistics (query types, answer codes, status)
26228753Smm	# printed from unbound-control. default off, because of speed.
27228753Smm	# extended-statistics: no
28228753Smm
29228753Smm	# number of threads to create. 1 disables threading.
30228753Smm	# num-threads: 1
31228753Smm
32228753Smm	# specify the interfaces to answer queries from by ip-address.
33228753Smm	# The default is to listen to localhost (127.0.0.1 and ::1).
34228753Smm	# specify 0.0.0.0 and ::0 to bind to all available interfaces.
35228753Smm	# specify every interface[@port] on a new 'interface:' labelled line.
36228753Smm	# The listen interfaces are not changed on reload, only on restart.
37228753Smm	# interface: 192.0.2.153
38228753Smm	# interface: 192.0.2.154
39228753Smm	# interface: 192.0.2.154@5003
40228753Smm	# interface: 2001:DB8::5
41228753Smm
42228753Smm	# enable this feature to copy the source address of queries to reply.
43228753Smm	# Socket options are not supported on all platforms. experimental.
44228753Smm	# interface-automatic: no
45228753Smm
46228753Smm	# port to answer queries from
47228753Smm	# port: 53
48228753Smm
49228753Smm	# specify the interfaces to send outgoing queries to authoritative
50228753Smm	# server from by ip-address. If none, the default (all) interface
51228753Smm	# is used. Specify every interface on a 'outgoing-interface:' line.
52228753Smm	# outgoing-interface: 192.0.2.153
53228753Smm	# outgoing-interface: 2001:DB8::5
54232153Smm	# outgoing-interface: 2001:DB8::6
55228753Smm
56228753Smm	# number of ports to allocate per thread, determines the size of the
57232153Smm	# port range that can be open simultaneously.  About double the
58228753Smm	# num-queries-per-thread, or, use as many as the OS will allow you.
59228753Smm	# outgoing-range: 4096
60228753Smm
61228753Smm	# permit unbound to use this port number or port range for
62228753Smm	# making outgoing queries, using an outgoing interface.
63228753Smm	# outgoing-port-permit: 32768
64228753Smm
65228753Smm	# deny unbound the use this of port number or port range for
66228753Smm	# making outgoing queries, using an outgoing interface.
67228753Smm	# Use this to make sure unbound does not grab a UDP port that some
68228753Smm	# other server on this computer needs. The default is to avoid
69228753Smm	# IANA-assigned port numbers.
70228753Smm	# If multiple outgoing-port-permit and outgoing-port-avoid options
71228753Smm	# are present, they are processed in order.
72228753Smm	# outgoing-port-avoid: "3200-3208"
73228753Smm
74228753Smm	# number of outgoing simultaneous tcp buffers to hold per thread.
75228753Smm	# outgoing-num-tcp: 10
76228753Smm
77232153Smm	# number of incoming simultaneous tcp buffers to hold per thread.
78232153Smm	# incoming-num-tcp: 10
79228753Smm
80228753Smm	# buffer size for UDP port 53 incoming (SO_RCVBUF socket option).
81228753Smm	# 0 is system default.  Use 4m to catch query spikes for busy servers.
82228753Smm	# so-rcvbuf: 0
83228753Smm
84228753Smm	# buffer size for UDP port 53 outgoing (SO_SNDBUF socket option).
85228753Smm	# 0 is system default.  Use 4m to handle spikes on very busy servers.
86228753Smm	# so-sndbuf: 0
87232153Smm
88232153Smm	# use SO_REUSEPORT to distribute queries over threads.
89228753Smm	# so-reuseport: no
90228753Smm
91228753Smm	# use IP_TRANSPARENT so the interface: addresses can be non-local
92228753Smm	# and you can config non-existing IPs that are going to work later on
93228753Smm	# (uses IP_BINDANY on FreeBSD).
94228753Smm	# ip-transparent: no
95228753Smm
96228753Smm	# EDNS reassembly buffer to advertise to UDP peers (the actual buffer
97228753Smm	# is set with msg-buffer-size). 1480 can solve fragmentation (timeouts).
98228753Smm	# edns-buffer-size: 4096
99228753Smm
100228753Smm	# Maximum UDP response size (not applied to TCP response).
101228753Smm	# Suggested values are 512 to 4096. Default is 4096. 65536 disables it.
102228753Smm	# max-udp-size: 4096
103228753Smm
104228753Smm	# buffer size for handling DNS data. No messages larger than this
105228753Smm	# size can be sent or received, by UDP or TCP. In bytes.
106228753Smm	# msg-buffer-size: 65552
107228753Smm
108228753Smm	# the amount of memory to use for the message cache.
109228753Smm	# plain value in bytes or you can append k, m or G. default is "4Mb".
110228753Smm	# msg-cache-size: 4m
111228753Smm
112228753Smm	# the number of slabs to use for the message cache.
113228753Smm	# the number of slabs must be a power of 2.
114228753Smm	# more slabs reduce lock contention, but fragment memory usage.
115228753Smm	# msg-cache-slabs: 4
116228753Smm
117228753Smm	# the number of queries that a thread gets to service.
118228753Smm	# num-queries-per-thread: 1024
119228753Smm
120228753Smm	# if very busy, 50% queries run to completion, 50% get timeout in msec
121228753Smm	# jostle-timeout: 200
122228753Smm
123228753Smm	# msec to wait before close of port on timeout UDP. 0 disables.
124228753Smm	# delay-close: 0
125228753Smm
126228753Smm	# the amount of memory to use for the RRset cache.
127228753Smm	# plain value in bytes or you can append k, m or G. default is "4Mb".
128228753Smm	# rrset-cache-size: 4m
129228753Smm
130228753Smm	# the number of slabs to use for the RRset cache.
131228753Smm	# the number of slabs must be a power of 2.
132228753Smm	# more slabs reduce lock contention, but fragment memory usage.
133228753Smm	# rrset-cache-slabs: 4
134228753Smm
135228753Smm	# the time to live (TTL) value lower bound, in seconds. Default 0.
136228753Smm	# If more than an hour could easily give trouble due to stale data.
137228753Smm	# cache-min-ttl: 0
138228753Smm
139228753Smm	# the time to live (TTL) value cap for RRsets and messages in the
140228753Smm	# cache. Items are not cached for longer. In seconds.
141228753Smm	# cache-max-ttl: 86400
142228753Smm
143228753Smm	# the time to live (TTL) value cap for negative responses in the cache
144228753Smm	# cache-max-negative-ttl: 3600
145228753Smm
146228753Smm	# the time to live (TTL) value for cached roundtrip times, lameness and
147228753Smm	# EDNS version information for hosts. In seconds.
148228753Smm	# infra-host-ttl: 900
149228753Smm
150228753Smm	# minimum wait time for responses, increase if uplink is long. In msec.
151228753Smm	# infra-cache-min-rtt: 50
152228753Smm
153228753Smm	# the number of slabs to use for the Infrastructure cache.
154228753Smm	# the number of slabs must be a power of 2.
155228753Smm	# more slabs reduce lock contention, but fragment memory usage.
156228753Smm	# infra-cache-slabs: 4
157228753Smm
158228753Smm	# the maximum number of hosts that are cached (roundtrip, EDNS, lame).
159228753Smm	# infra-cache-numhosts: 10000
160228753Smm
161228753Smm	# Enable IPv4, "yes" or "no".
162228753Smm	# do-ip4: yes
163228753Smm
164228753Smm	# Enable IPv6, "yes" or "no".
165228753Smm	# do-ip6: yes
166228753Smm
167228753Smm	# Enable UDP, "yes" or "no".
168228753Smm	# do-udp: yes
169228753Smm
170228753Smm	# Enable TCP, "yes" or "no".
171228753Smm	# do-tcp: yes
172228753Smm
173228753Smm	# upstream connections use TCP only (and no UDP), "yes" or "no"
174228753Smm	# useful for tunneling scenarios, default no.
175228753Smm	# tcp-upstream: no
176228753Smm
177228753Smm	# Maximum segment size (MSS) of TCP socket on which the server
178228753Smm	# responds to queries. Default is 0, system default MSS.
179228753Smm	# tcp-mss: 0
180228753Smm
181228753Smm	# Maximum segment size (MSS) of TCP socket for outgoing queries.
182228753Smm	# Default is 0, system default MSS.
183228753Smm	# outgoing-tcp-mss: 0
184228753Smm
185228753Smm	# Detach from the terminal, run in background, "yes" or "no".
186238856Smm	# do-daemonize: yes
187228753Smm
188238856Smm	# control which clients are allowed to make (recursive) queries
189228753Smm	# to this server. Specify classless netblocks with /size and action.
190228753Smm	# By default everything is refused, except for localhost.
191228753Smm	# Choose deny (drop message), refuse (polite error reply),
192228753Smm	# allow (recursive ok), allow_snoop (recursive and nonrecursive ok)
193228753Smm	# deny_non_local (drop queries unless can be answered from local-data)
194228753Smm	# refuse_non_local (like deny_non_local but polite error reply).
195228753Smm	# access-control: 0.0.0.0/0 refuse
196228753Smm	# access-control: 127.0.0.0/8 allow
197228753Smm	# access-control: ::0/0 refuse
198228753Smm	# access-control: ::1 allow
199228753Smm	# access-control: ::ffff:127.0.0.1 allow
200228753Smm
201228753Smm	# if given, a chroot(2) is done to the given directory.
202228753Smm	# i.e. you can chroot to the working directory, for example,
203228753Smm	# for extra security, but make sure all files are in that directory.
204228753Smm	#
205228753Smm	# If chroot is enabled, you should pass the configfile (from the
206228753Smm	# commandline) as a full path from the original root. After the
207228753Smm	# chroot has been performed the now defunct portion of the config
208228753Smm	# file path is removed to be able to reread the config after a reload.
209228753Smm	#
210228753Smm	# All other file paths (working dir, logfile, roothints, and
211228753Smm	# key files) can be specified in several ways:
212228753Smm	# 	o as an absolute path relative to the new root.
213228753Smm	# 	o as a relative path to the working directory.
214228753Smm	# 	o as an absolute path relative to the original root.
215228753Smm	# In the last case the path is adjusted to remove the unused portion.
216228753Smm	#
217228753Smm	# The pid file can be absolute and outside of the chroot, it is
218228753Smm	# written just prior to performing the chroot and dropping permissions.
219228753Smm	#
220228753Smm	# Additionally, unbound may need to access /dev/random (for entropy).
221228753Smm	# How to do this is specific to your OS.
222228753Smm	#
223228753Smm	# If you give "" no chroot is performed. The path must not end in a /.
224228753Smm	# chroot: "@UNBOUND_CHROOT_DIR@"
225228753Smm
226228753Smm	# if given, user privileges are dropped (after binding port),
227228753Smm	# and the given username is assumed. Default is user "unbound".
228228753Smm	# If you give "" no privileges are dropped.
229228753Smm	# username: "@UNBOUND_USERNAME@"
230228753Smm
231228753Smm	# the working directory. The relative files in this config are
232228753Smm	# relative to this directory. If you give "" the working directory
233228753Smm	# is not changed.
234228753Smm	# directory: "@UNBOUND_RUN_DIR@"
235228753Smm
236228753Smm	# the log file, "" means log to stderr.
237228753Smm	# Use of this option sets use-syslog to "no".
238228753Smm	# logfile: ""
239228753Smm
240228753Smm	# Log to syslog(3) if yes. The log facility LOG_DAEMON is used to
241228753Smm	# log to, with identity "unbound". If yes, it overrides the logfile.
242228753Smm	# use-syslog: yes
243228753Smm
244228753Smm	# print UTC timestamp in ascii to logfile, default is epoch in seconds.
245228753Smm	# log-time-ascii: no
246228753Smm
247228753Smm	# print one line with time, IP, name, type, class for every query.
248228753Smm	# log-queries: no
249228753Smm
250228753Smm	# the pid file. Can be an absolute path outside of chroot/work dir.
251228753Smm	# pidfile: "@UNBOUND_PIDFILE@"
252228753Smm
253228753Smm	# file to read root hints from.
254228753Smm	# get one from https://www.internic.net/domain/named.cache
255228753Smm	# root-hints: ""
256228753Smm
257228753Smm	# enable to not answer id.server and hostname.bind queries.
258228753Smm	# hide-identity: no
259228753Smm
260228753Smm	# enable to not answer version.server and version.bind queries.
261228753Smm	# hide-version: no
262228753Smm
263228753Smm	# the identity to report. Leave "" or default to return hostname.
264228753Smm	# identity: ""
265228753Smm
266228753Smm	# the version to report. Leave "" or default to return package version.
267228753Smm	# version: ""
268228753Smm
269228753Smm	# the target fetch policy.
270228753Smm	# series of integers describing the policy per dependency depth.
271228753Smm	# The number of values in the list determines the maximum dependency
272228753Smm	# depth the recursor will pursue before giving up. Each integer means:
273228753Smm	# 	-1 : fetch all targets opportunistically,
274228753Smm	# 	0: fetch on demand,
275228753Smm	#	positive value: fetch that many targets opportunistically.
276228753Smm	# Enclose the list of numbers between quotes ("").
277228753Smm	# target-fetch-policy: "3 2 1 0 0"
278228753Smm
279228753Smm	# Harden against very small EDNS buffer sizes.
280228753Smm	# harden-short-bufsize: no
281228753Smm
282228753Smm	# Harden against unseemly large queries.
283228753Smm	# harden-large-queries: no
284228753Smm
285228753Smm	# Harden against out of zone rrsets, to avoid spoofing attempts.
286228753Smm	# harden-glue: yes
287228753Smm
288228753Smm	# Harden against receiving dnssec-stripped data. If you turn it
289228753Smm	# off, failing to validate dnskey data for a trustanchor will
290228753Smm	# trigger insecure mode for that zone (like without a trustanchor).
291228753Smm	# Default on, which insists on dnssec data for trust-anchored zones.
292228753Smm	# harden-dnssec-stripped: yes
293228753Smm
294228753Smm	# Harden against queries that fall under dnssec-signed nxdomain names.
295228753Smm	# harden-below-nxdomain: no
296228753Smm
297228753Smm        # Harden the referral path by performing additional queries for
298228753Smm	# infrastructure data.  Validates the replies (if possible).
299228753Smm	# Default off, because the lookups burden the server.  Experimental
300228753Smm	# implementation of draft-wijngaards-dnsext-resolver-side-mitigation.
301228753Smm	# harden-referral-path: no
302228753Smm
303228753Smm	# Harden against algorithm downgrade when multiple algorithms are
304228753Smm	# advertised in the DS record.  If no, allows the weakest algorithm
305228753Smm	# to validate the zone.
306228753Smm	# harden-algo-downgrade: no
307228753Smm
308232153Smm	# Sent minimum amount of information to upstream servers to enhance
309232153Smm	# privacy. Only sent minimum required labels of the QNAME and set QTYPE
310228753Smm	# to NS when possible.
311228753Smm	# qname-minimisation: no
312228753Smm
313228753Smm	# Use 0x20-encoded random bits in the query to foil spoof attempts.
314228753Smm	# This feature is an experimental implementation of draft dns-0x20.
315228753Smm	# use-caps-for-id: no
316228753Smm
317228753Smm	# Domains (and domains in them) without support for dns-0x20 and
318228753Smm	# the fallback fails because they keep sending different answers.
319228753Smm	# caps-whitelist: "licdn.com"
320228753Smm
321228753Smm	# Enforce privacy of these addresses. Strips them away from answers.
322228753Smm	# It may cause DNSSEC validation to additionally mark it as bogus.
323228753Smm	# Protects against 'DNS Rebinding' (uses browser as network proxy).
324228753Smm	# Only 'private-domain' and 'local-data' names are allowed to have
325228753Smm	# these private addresses. No default.
326228753Smm	# private-address: 10.0.0.0/8
327228753Smm	# private-address: 172.16.0.0/12
328228753Smm	# private-address: 192.168.0.0/16
329228753Smm	# private-address: 169.254.0.0/16
330228753Smm	# private-address: fd00::/8
331228753Smm	# private-address: fe80::/10
332228753Smm	# private-address: ::ffff:0:0/96
333228753Smm
334228753Smm	# Allow the domain (and its subdomains) to contain private addresses.
335228753Smm	# local-data statements are allowed to contain private addresses too.
336228753Smm	# private-domain: "example.com"
337228753Smm
338228753Smm	# If nonzero, unwanted replies are not only reported in statistics,
339228753Smm	# but also a running total is kept per thread. If it reaches the
340228753Smm	# threshold, a warning is printed and a defensive action is taken,
341228753Smm	# the cache is cleared to flush potential poison out of it.
342228753Smm	# A suggested value is 10000000, the default is 0 (turned off).
343228753Smm	# unwanted-reply-threshold: 0
344228753Smm
345228753Smm	# Do not query the following addresses. No DNS queries are sent there.
346228753Smm	# List one address per entry. List classless netblocks with /size,
347228753Smm	# do-not-query-address: 127.0.0.1/8
348228753Smm	# do-not-query-address: ::1
349228753Smm
350228753Smm	# if yes, the above default do-not-query-address entries are present.
351228753Smm	# if no, localhost can be queried (for testing and debugging).
352228753Smm	# do-not-query-localhost: yes
353228753Smm
354228753Smm	# if yes, perform prefetching of almost expired message cache entries.
355228753Smm	# prefetch: no
356232153Smm
357228753Smm	# if yes, perform key lookups adjacent to normal lookups.
358228753Smm	# prefetch-key: no
359228753Smm
360228753Smm	# if yes, Unbound rotates RRSet order in response.
361232153Smm	# rrset-roundrobin: no
362232153Smm
363228753Smm	# if yes, Unbound doesn't insert authority/additional sections
364228753Smm	# into response messages when those sections are not required.
365228753Smm	# minimal-responses: no
366228753Smm
367228753Smm	# module configuration of the server. A string with identifiers
368228753Smm	# separated by spaces. Syntax: "[dns64] [validator] iterator"
369228753Smm	# module-config: "validator iterator"
370228753Smm
371228753Smm	# File with trusted keys, kept uptodate using RFC5011 probes,
372228753Smm	# initial file like trust-anchor-file, then it stores metadata.
373228753Smm	# Use several entries, one per domain name, to track multiple zones.
374228753Smm	#
375228753Smm	# If you want to perform DNSSEC validation, run unbound-anchor before
376232153Smm	# you start unbound (i.e. in the system boot scripts).  And enable:
377228753Smm	# Please note usage of unbound-anchor root anchor is at your own risk
378228753Smm	# and under the terms of our LICENSE (see that file in the source).
379228753Smm	# auto-trust-anchor-file: "@UNBOUND_ROOTKEY_FILE@"
380232153Smm
381228753Smm	# File with DLV trusted keys. Same format as trust-anchor-file.
382228753Smm	# There can be only one DLV configured, it is trusted from root down.
383228753Smm	# DLV is going to be decommissioned.  Please do not use it any more.
384228753Smm	# dlv-anchor-file: "dlv.isc.org.key"
385228753Smm
386228753Smm	# File with trusted keys for validation. Specify more than one file
387228753Smm	# with several entries, one file per entry.
388228753Smm	# Zone file format, with DS and DNSKEY entries.
389228753Smm	# Note this gets out of date, use auto-trust-anchor-file please.
390228753Smm	# trust-anchor-file: ""
391228753Smm
392232153Smm	# Trusted key for validation. DS or DNSKEY. specify the RR on a
393232153Smm	# single line, surrounded by "". TTL is ignored. class is IN default.
394228753Smm	# Note this gets out of date, use auto-trust-anchor-file please.
395232153Smm	# (These examples are from August 2007 and may not be valid anymore).
396232153Smm	# trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ=="
397228753Smm	# trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A"
398228753Smm
399228753Smm	# File with trusted keys for validation. Specify more than one file
400228753Smm	# with several entries, one file per entry. Like trust-anchor-file
401228753Smm	# but has a different file format. Format is BIND-9 style format,
402228753Smm	# the trusted-keys { name flag proto algo "key"; }; clauses are read.
403228753Smm	# you need external update procedures to track changes in keys.
404228753Smm	# trusted-keys-file: ""
405228753Smm
406228753Smm	# Ignore chain of trust. Domain is treated as insecure.
407232153Smm	# domain-insecure: "example.com"
408232153Smm
409228753Smm	# Override the date for validation with a specific fixed date.
410232153Smm	# Do not set this unless you are debugging signature inception
411232153Smm	# and expiration. "" or "0" turns the feature off. -1 ignores date.
412228753Smm	# val-override-date: ""
413228753Smm
414228753Smm	# The time to live for bogus data, rrsets and messages. This avoids
415232153Smm	# some of the revalidation, until the time interval expires. in secs.
416232153Smm	# val-bogus-ttl: 60
417228753Smm
418232153Smm	# The signature inception and expiration dates are allowed to be off
419232153Smm	# by 10% of the signature lifetime (expir-incep) from our local clock.
420228753Smm	# This leeway is capped with a minimum and a maximum.  In seconds.
421228753Smm	# val-sig-skew-min: 3600
422228753Smm	# val-sig-skew-max: 86400
423228753Smm
424228753Smm	# Should additional section of secure message also be kept clean of
425232153Smm	# unsecure data. Useful to shield the users of this validator from
426232153Smm	# potential bogus data in the additional section. All unsigned data
427228753Smm	# in the additional section is removed from secure messages.
428228753Smm	# val-clean-additional: yes
429228753Smm
430228753Smm	# Turn permissive mode on to permit bogus messages. Thus, messages
431228753Smm	# for which security checks failed will be returned to clients,
432228753Smm	# instead of SERVFAIL. It still performs the security checks, which
433232153Smm	# result in interesting log files and possibly the AD bit in
434232153Smm	# replies if the message is found secure. The default is off.
435232153Smm	# val-permissive-mode: no
436232153Smm
437232153Smm	# Ignore the CD flag in incoming queries and refuse them bogus data.
438232153Smm	# Enable it if the only clients of unbound are legacy servers (w2008)
439228753Smm	# that set CD but cannot validate themselves.
440228753Smm	# ignore-cd-flag: no
441228753Smm
442228753Smm	# Have the validator log failed validations for your diagnosis.
443228753Smm	# 0: off. 1: A line per failed user query. 2: With reason and bad IP.
444228753Smm	# val-log-level: 0
445228753Smm
446228753Smm	# It is possible to configure NSEC3 maximum iteration counts per
447228753Smm	# keysize. Keep this table very short, as linear search is done.
448228753Smm	# A message with an NSEC3 with larger count is marked insecure.
449228753Smm	# List in ascending order the keysize and count values.
450228753Smm	# val-nsec3-keysize-iterations: "1024 150 2048 500 4096 2500"
451228753Smm
452232153Smm	# instruct the auto-trust-anchor-file probing to add anchors after ttl.
453232153Smm	# add-holddown: 2592000 # 30 days
454232153Smm
455228753Smm	# instruct the auto-trust-anchor-file probing to del anchors after ttl.
456228753Smm	# del-holddown: 2592000 # 30 days
457228753Smm
458228753Smm	# auto-trust-anchor-file probing removes missing anchors after ttl.
459228753Smm	# If the value 0 is given, missing anchors are not removed.
460228753Smm	# keep-missing: 31622400 # 366 days
461228753Smm
462228753Smm	# debug option that allows very small holddown times for key rollover
463228753Smm	# permit-small-holddown: no
464228753Smm
465228753Smm	# the amount of memory to use for the key cache.
466228753Smm	# plain value in bytes or you can append k, m or G. default is "4Mb".
467228753Smm	# key-cache-size: 4m
468228753Smm
469228753Smm	# the number of slabs to use for the key cache.
470248616Smm	# the number of slabs must be a power of 2.
471228753Smm	# more slabs reduce lock contention, but fragment memory usage.
472228753Smm	# key-cache-slabs: 4
473228753Smm
474228753Smm	# the amount of memory to use for the negative cache (used for DLV).
475228753Smm	# plain value in bytes or you can append k, m or G. default is "1Mb".
476228753Smm	# neg-cache-size: 1m
477228753Smm
478232153Smm	# By default, for a number of zones a small default 'nothing here'
479228753Smm	# reply is built-in.  Query traffic is thus blocked.  If you
480228753Smm	# wish to serve such zone you can unblock them by uncommenting one
481228753Smm	# of the nodefault statements below.
482228753Smm	# You may also have to use domain-insecure: zone to make DNSSEC work,
483232153Smm	# unless you have your own trust anchors for this zone.
484232153Smm	# local-zone: "localhost." nodefault
485228753Smm	# local-zone: "127.in-addr.arpa." nodefault
486228753Smm	# 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
487228753Smm	# local-zone: "onion." nodefault
488228753Smm	# local-zone: "10.in-addr.arpa." nodefault
489228753Smm	# local-zone: "16.172.in-addr.arpa." nodefault
490228753Smm	# local-zone: "17.172.in-addr.arpa." nodefault
491228753Smm	# local-zone: "18.172.in-addr.arpa." nodefault
492228753Smm	# local-zone: "19.172.in-addr.arpa." nodefault
493228753Smm	# local-zone: "20.172.in-addr.arpa." nodefault
494228753Smm	# local-zone: "21.172.in-addr.arpa." nodefault
495228753Smm	# local-zone: "22.172.in-addr.arpa." nodefault
496228753Smm	# local-zone: "23.172.in-addr.arpa." nodefault
497228753Smm	# local-zone: "24.172.in-addr.arpa." nodefault
498228753Smm	# local-zone: "25.172.in-addr.arpa." nodefault
499228753Smm	# local-zone: "26.172.in-addr.arpa." nodefault
500228753Smm	# local-zone: "27.172.in-addr.arpa." nodefault
501228753Smm	# local-zone: "28.172.in-addr.arpa." nodefault
502228753Smm	# local-zone: "29.172.in-addr.arpa." nodefault
503228753Smm	# local-zone: "30.172.in-addr.arpa." nodefault
504228753Smm	# local-zone: "31.172.in-addr.arpa." nodefault
505228753Smm	# local-zone: "168.192.in-addr.arpa." nodefault
506228753Smm	# local-zone: "0.in-addr.arpa." nodefault
507228753Smm	# local-zone: "254.169.in-addr.arpa." nodefault
508228753Smm	# local-zone: "2.0.192.in-addr.arpa." nodefault
509228753Smm	# local-zone: "100.51.198.in-addr.arpa." nodefault
510228753Smm	# local-zone: "113.0.203.in-addr.arpa." nodefault
511228753Smm	# local-zone: "255.255.255.255.in-addr.arpa." nodefault
512228753Smm	# 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
513228753Smm	# local-zone: "d.f.ip6.arpa." nodefault
514228753Smm	# local-zone: "8.e.f.ip6.arpa." nodefault
515228753Smm	# local-zone: "9.e.f.ip6.arpa." nodefault
516228753Smm	# local-zone: "a.e.f.ip6.arpa." nodefault
517228753Smm	# local-zone: "b.e.f.ip6.arpa." nodefault
518228753Smm	# local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault
519228753Smm	# And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa.
520228753Smm
521228753Smm	# If unbound is running service for the local host then it is useful
522228753Smm	# to perform lan-wide lookups to the upstream, and unblock the
523228753Smm	# long list of local-zones above.  If this unbound is a dns server
524228753Smm	# for a network of computers, disabled is better and stops information
525228753Smm	# leakage of local lan information.
526228753Smm	# unblock-lan-zones: no
527228753Smm
528228753Smm	# The insecure-lan-zones option disables validation for
529228753Smm	# these zones, as if they were all listed as domain-insecure.
530228753Smm	# insecure-lan-zones: no
531228753Smm
532228753Smm	# a number of locally served zones can be configured.
533228753Smm	# 	local-zone: <zone> <type>
534228753Smm	# 	local-data: "<resource record string>"
535228753Smm	# o deny serves local data (if any), else, drops queries.
536228753Smm	# o refuse serves local data (if any), else, replies with error.
537228753Smm	# o static serves local data, else, nxdomain or nodata answer.
538228753Smm	# o transparent gives local data, but resolves normally for other names
539228753Smm	# o redirect serves the zone data for any subdomain in the zone.
540228753Smm	# o nodefault can be used to normally resolve AS112 zones.
541228753Smm	# o typetransparent resolves normally for other types and other names
542228753Smm	# o inform resolves normally, but logs client IP address
543228753Smm	# o inform_deny drops queries and logs client IP address
544228753Smm	#
545228753Smm	# defaults are localhost address, reverse for 127.0.0.1 and ::1
546228753Smm	# and nxdomain for AS112 zones. If you configure one of these zones
547228753Smm	# the default content is omitted, or you can omit it with 'nodefault'.
548228753Smm	#
549228753Smm	# If you configure local-data without specifying local-zone, by
550228753Smm	# default a transparent local-zone is created for the data.
551228753Smm	#
552228753Smm	# You can add locally served data with
553228753Smm	# local-zone: "local." static
554228753Smm	# local-data: "mycomputer.local. IN A 192.0.2.51"
555228753Smm	# local-data: 'mytext.local TXT "content of text record"'
556228753Smm	#
557228753Smm	# You can override certain queries with
558228753Smm	# local-data: "adserver.example.com A 127.0.0.1"
559228753Smm	#
560228753Smm	# You can redirect a domain to a fixed address with
561228753Smm	# (this makes example.com, www.example.com, etc, all go to 192.0.2.3)
562228753Smm	# local-zone: "example.com" redirect
563228753Smm	# local-data: "example.com A 192.0.2.3"
564228753Smm	#
565228753Smm	# Shorthand to make PTR records, "IPv4 name" or "IPv6 name".
566228753Smm	# You can also add PTR records using local-data directly, but then
567228753Smm	# you need to do the reverse notation yourself.
568228753Smm	# local-data-ptr: "192.0.2.3 www.example.com"
569228753Smm
570228753Smm	# service clients over SSL (on the TCP sockets), with plain DNS inside
571228753Smm	# the SSL stream.  Give the certificate to use and private key.
572228753Smm	# default is "" (disabled).  requires restart to take effect.
573228753Smm	# ssl-service-key: "path/to/privatekeyfile.key"
574228753Smm	# ssl-service-pem: "path/to/publiccertfile.pem"
575228753Smm	# ssl-port: 853
576228753Smm
577228753Smm	# request upstream over SSL (with plain DNS inside the SSL stream).
578228753Smm	# Default is no.  Can be turned on and off with unbound-control.
579228753Smm	# ssl-upstream: no
580228753Smm
581228753Smm	# DNS64 prefix. Must be specified when DNS64 is use.
582228753Smm	# Enable dns64 in module-config.  Used to synthesize IPv6 from IPv4.
583228753Smm	# dns64-prefix: 64:ff9b::0/96
584228753Smm
585228753Smm	# ratelimit for uncached, new queries, this limits recursion effort.
586228753Smm	# ratelimiting is experimental, and may help against randomqueryflood.
587228753Smm	# if 0(default) it is disabled, otherwise state qps allowed per zone.
588228753Smm	# ratelimit: 0
589228753Smm
590228753Smm	# ratelimits are tracked in a cache, size in bytes of cache (or k,m).
591228753Smm	# ratelimit-size: 4m
592228753Smm	# ratelimit cache slabs, reduces lock contention if equal to cpucount.
593228753Smm	# ratelimit-slabs: 4
594228753Smm
595228753Smm	# 0 blocks when ratelimited, otherwise let 1/xth traffic through
596228753Smm	# ratelimit-factor: 10
597228753Smm
598228753Smm	# override the ratelimit for a specific domain name.
599228753Smm	# give this setting multiple times to have multiple overrides.
600228753Smm	# ratelimit-for-domain: example.com 1000
601228753Smm	# override the ratelimits for all domains below a domain name
602228753Smm	# can give this multiple times, the name closest to the zone is used.
603228753Smm	# ratelimit-below-domain: example 1000
604228753Smm
605228753Smm# Python config section. To enable:
606238856Smm# o use --with-pythonmodule to configure before compiling.
607238856Smm# o list python in the module-config string (above) to enable.
608228753Smm# o and give a python-script to run.
609228753Smmpython:
610228753Smm	# Script file to load
611228753Smm	# python-script: "@UNBOUND_SHARE_DIR@/ubmodule-tst.py"
612228753Smm
613228753Smm# Remote control config section.
614228753Smmremote-control:
615228753Smm	# Enable remote control with unbound-control(8) here.
616238856Smm	# set up the keys and certificates with unbound-control-setup.
617238856Smm	# control-enable: no
618228753Smm
619228753Smm	# Set to no and use an absolute path as control-interface to use
620228753Smm	# a unix local named pipe for unbound-control.
621228753Smm	# control-use-cert: yes
622228753Smm
623228753Smm	# what interfaces are listened to for remote control.
624228753Smm	# give 0.0.0.0 and ::0 to listen to all interfaces.
625228753Smm	# control-interface: 127.0.0.1
626228753Smm	# control-interface: ::1
627228753Smm
628228753Smm	# port number for remote control operations.
629228753Smm	# control-port: 8953
630228753Smm
631228753Smm	# unbound server key file.
632228753Smm	# server-key-file: "@UNBOUND_RUN_DIR@/unbound_server.key"
633228753Smm
634228753Smm	# unbound server certificate file.
635228753Smm	# server-cert-file: "@UNBOUND_RUN_DIR@/unbound_server.pem"
636228753Smm
637228753Smm	# unbound-control key file.
638228753Smm	# control-key-file: "@UNBOUND_RUN_DIR@/unbound_control.key"
639228753Smm
640228753Smm	# unbound-control certificate file.
641228753Smm	# control-cert-file: "@UNBOUND_RUN_DIR@/unbound_control.pem"
642228753Smm
643228753Smm# Stub zones.
644228753Smm# Create entries like below, to make all queries for 'example.com' and
645228753Smm# 'example.org' go to the given list of nameservers. list zero or more
646228753Smm# nameservers by hostname or by ipaddress. If you set stub-prime to yes,
647228753Smm# the list is treated as priming hints (default is no).
648228753Smm# With stub-first yes, it attempts without the stub if it fails.
649228753Smm# Consider adding domain-insecure: name and local-zone: name nodefault
650228753Smm# to the server: section if the stub is a locally served zone.
651228753Smm# stub-zone:
652228753Smm#	name: "example.com"
653228753Smm#	stub-addr: 192.0.2.68
654228753Smm#	stub-prime: no
655228753Smm#	stub-first: no
656228753Smm# stub-zone:
657228753Smm#	name: "example.org"
658228753Smm#	stub-host: ns.example.com.
659228753Smm
660228753Smm# Forward zones
661228753Smm# Create entries like below, to make all queries for 'example.com' and
662228753Smm# 'example.org' go to the given list of servers. These servers have to handle
663228753Smm# recursion to other nameservers. List zero or more nameservers by hostname
664228753Smm# or by ipaddress. Use an entry with name "." to forward all queries.
665228753Smm# If you enable forward-first, it attempts without the forward if it fails.
666228753Smm# forward-zone:
667232153Smm# 	name: "example.com"
668228753Smm# 	forward-addr: 192.0.2.68
669228753Smm# 	forward-addr: 192.0.2.73@5355  # forward to port 5355.
670232153Smm# 	forward-first: no
671232153Smm# forward-zone:
672232153Smm# 	name: "example.org"
673232153Smm# 	forward-host: fwd.example.com
674232153Smm