source: hybrid/branches/releng-10/nanobsd/files/var/unbound/unbound.conf.node

Last change on this file was 12955, checked in by wouter, 10 years ago

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1## Authoritative, validating, recursive caching DNS
2## unbound.conf -- https://calomel.org
3#
4server:
5 # log verbosity
6 verbosity: 1
7
8 # specify the interfaces to answer queries from by ip-address. The default
9 # is to listen to localhost (127.0.0.1 and ::1). specify 0.0.0.0 and ::0 to
10 # bind to all available interfaces. specify every interface[@port] on a new
11 # 'interface:' labeled line. The listen interfaces are not changed on
12 # reload, only on restart.
13 interface: 0.0.0.0
14
15 # port to answer queries from
16 port: 53
17
18 # Enable IPv4, "yes" or "no".
19 do-ip4: yes
20
21 # Enable IPv6, "yes" or "no".
22 do-ip6: no
23
24 # Enable UDP, "yes" or "no".
25 do-udp: yes
26
27 # Enable TCP, "yes" or "no". If TCP is not needed, Unbound is actually
28 # quicker to resolve as the functions related to TCP checks are not done.i
29 # NOTE: you may need tcp enabled to get the DNSSEC results from *.edu domains
30 # due to their size.
31 do-tcp: yes
32
33 # control which client ips are allowed to make (recursive) queries to this
34 # server. Specify classless netblocks with /size and action. By default
35 # everything is refused, except for localhost. Choose deny (drop message),
36 # refuse (polite error reply), allow (recursive ok), allow_snoop (recursive
37 # and nonrecursive ok)
38 access-control: 127.0.0.0/8 allow
39 access-control: 172.16.0.0/12 allow
40
41 # Read the root hints from this file. Default is nothing, using built in
42 # hints for the IN class. The file has the format of zone files, with root
43 # nameserver names and addresses only. The default may become outdated,
44 # when servers change, therefore it is good practice to use a root-hints
45 # file. get one from ftp://FTP.INTERNIC.NET/domain/named.cache
46 root-hints: "/var/unbound/root.hints"
47
48 # enable to not answer id.server and hostname.bind queries.
49 hide-identity: yes
50
51 # enable to not answer version.server and version.bind queries.
52 hide-version: yes
53
54 # Will trust glue only if it is within the servers authority.
55 # Harden against out of zone rrsets, to avoid spoofing attempts.
56 # Hardening queries multiple name servers for the same data to make
57 # spoofing significantly harder and does not mandate dnssec.
58 harden-glue: yes
59
60 # Require DNSSEC data for trust-anchored zones, if such data is absent, the
61 # zone becomes bogus. Harden against receiving dnssec-stripped data. If you
62 # turn it off, failing to validate dnskey data for a trustanchor will trigger
63 # insecure mode for that zone (like without a trustanchor). Default on,
64 # which insists on dnssec data for trust-anchored zones.
65 harden-dnssec-stripped: yes
66
67 # Use 0x20-encoded random bits in the query to foil spoof attempts.
68 # http://tools.ietf.org/html/draft-vixie-dnsext-dns0x20-00
69 # While upper and lower case letters are allowed in domain names, no significance
70 # is attached to the case. That is, two names with the same spelling but
71 # different case are to be treated as if identical. This means calomel.org is the
72 # same as CaLoMeL.Org which is the same as CALOMEL.ORG.
73 use-caps-for-id: yes
74
75 # the time to live (TTL) value lower bound, in seconds. Default 0.
76 # If more than an hour could easily give trouble due to stale data.
77 cache-min-ttl: 3600
78
79 # the time to live (TTL) value cap for RRsets and messages in the
80 # cache. Items are not cached for longer. In seconds.
81 cache-max-ttl: 86400
82
83 # perform prefetching of close to expired message cache entries. If a client
84 # requests the dns lookup and the TTL of the cached hostname is going to
85 # expire in less than 10% of its TTL, unbound will (1st) return the ip of the
86 # host to the client and (2nd) pre-fetch the dns request from the remote dns
87 # server. This method has been shown to increase the amount of cached hits by
88 # local clients by 10% on average.
89 prefetch: yes
90
91 # number of threads to create. 1 disables threading. This should equal the number
92 # of CPU cores in the machine. Our example machine has 4 CPU cores.
93 num-threads: 1
94
95
96 ## Unbound Optimization and Speed Tweaks ###
97
98 # the number of slabs to use for cache and must be a power of 2 times the
99 # number of num-threads set above. more slabs reduce lock contention, but
100 # fragment memory usage.
101 msg-cache-slabs: 8
102 rrset-cache-slabs: 8
103 infra-cache-slabs: 8
104 key-cache-slabs: 8
105
106 # Increase the memory size of the cache. Use roughly twice as much rrset cache
107 # memory as you use msg cache memory. Due to malloc overhead, the total memory
108 # usage is likely to rise to double (or 2.5x) the total cache memory. The test
109 # box has 4gig of ram so 256meg for rrset allows a lot of room for cacheed objects.
110 rrset-cache-size: 64m
111 msg-cache-size: 32m
112
113 # buffer size for UDP port 53 incoming (SO_RCVBUF socket option). This sets
114 # the kernel buffer larger so that no messages are lost in spikes in the traffic.
115 so-rcvbuf: 1m
116
117 ## Unbound Optimization and Speed Tweaks ###
118
119
120 # Enforce privacy of these addresses. Strips them away from answers. It may
121 # cause DNSSEC validation to additionally mark it as bogus. Protects against
122 # 'DNS Rebinding' (uses browser as network proxy). Only 'private-domain' and
123 # 'local-data' names are allowed to have these private addresses. No default.
124 private-address: 10.0.0.0/8
125# private-address: 172.16.0.0/12
126 private-address: 10.0.0.0/16
127 private-address: 192.254.0.0/16
128
129 # Allow the domain (and its subdomains) to contain private addresses.
130 # local-data statements are allowed to contain private addresses too.
131# private-domain: "wleiden.net"
132
133 # If nonzero, unwanted replies are not only reported in statistics, but also
134 # a running total is kept per thread. If it reaches the threshold, a warning
135 # is printed and a defensive action is taken, the cache is cleared to flush
136 # potential poison out of it. A suggested value is 10000000, the default is
137 # 0 (turned off). We think 10K is a good value.
138 unwanted-reply-threshold: 10000
139
140 # IMPORTANT FOR TESTING: If you are testing and setup NSD or BIND on
141 # localhost you will want to allow the resolver to send queries to localhost.
142 # Make sure to set do-not-query-localhost: yes . If yes, the above default
143 # do-not-query-address entries are present. if no, localhost can be queried
144 # (for testing and debugging).
145 do-not-query-localhost: no
146
147 # File with trusted keys, kept up to date using RFC5011 probes, initial file
148 # like trust-anchor-file, then it stores metadata. Use several entries, one
149 # per domain name, to track multiple zones. If you use forward-zone below to
150 # query the Google DNS servers you MUST comment out this option or all DNS
151 # queries will fail.
152
153 auto-trust-anchor-file: "/var/unbound/root.key"
154
155 # Should additional section of secure message also be kept clean of unsecure
156 # data. Useful to shield the users of this validator from potential bogus
157 # data in the additional section. All unsigned data in the additional section
158 # is removed from secure messages.
159 val-clean-additional: yes
160
161 # Blocking Ad Server domains. Google's AdSense, DoubleClick and Yahoo
162 # account for a 70 percent share of all advertising traffic. Block them.
163 local-zone: "doubleclick.net" redirect
164 local-data: "doubleclick.net A 127.0.0.1"
165 local-zone: "googlesyndication.com" redirect
166 local-data: "googlesyndication.com A 127.0.0.1"
167 local-zone: "googleadservices.com" redirect
168 local-data: "googleadservices.com A 127.0.0.1"
169 local-zone: "google-analytics.com" redirect
170 local-data: "google-analytics.com A 127.0.0.1"
171 local-zone: "ads.youtube.com" redirect
172 local-data: "ads.youtube.com A 127.0.0.1"
173 local-zone: "adserver.yahoo.com" redirect
174 local-data: "adserver.yahoo.com A 127.0.0.1"
175
176
177 # Unbound will not load if you specify the same local-zone and local-data
178 # servers in the main configuration as well as in this "include:" file. We
179 # suggest commenting out any of the local-zone and local-data lines above if
180 # you suspect they could be included in the unbound_ad_servers servers file.
181 #include: "/var/unbound/unbound_ad_servers"
182
183 # locally served zones can be configured for the machines on the LAN.
184
185# local-zone: "wleiden.net" static
186
187# local-data: "firewall.home.lan. IN A 10.0.0.1"
188# local-data: "laptop.home.lan. IN A 10.0.0.2"
189# local-data: "xboxone.home.lan. IN A 10.0.0.3"
190# local-data: "ps4.home.lan. IN A 10.0.0.4"
191# local-data: "dhcp5.home.lan. IN A 10.0.0.5"
192# local-data: "dhcp6.home.lan. IN A 10.0.0.6"
193# local-data: "dhcp7.home.lan. IN A 10.0.0.7"
194
195# local-data-ptr: "10.0.0.1 firewall.home.lan"
196# local-data-ptr: "10.0.0.2 laptop.home.lan"
197# local-data-ptr: "10.0.0.3 xboxone.home.lan"
198# local-data-ptr: "10.0.0.4 ps4.home.lan"
199# local-data-ptr: "10.0.0.5 dhcp5.home.lan"
200# local-data-ptr: "10.0.0.6 dhcp6.home.lan"
201# local-data-ptr: "10.0.0.7 dhcp7.home.lan"
202
203 # Unbound can query your NSD or BIND server for private domain queries too.
204 # On our NSD page we have NSD configured to serve the private domain,
205 # "home.lan". Here we can tell Unbound to connect to the NSD server when it
206 # needs to resolve a *.home.lan hostname or IP.
207 #
208 # private-domain: "home.lan"
209 # local-zone: "0.0.10.in-addr.arpa." nodefault
210 # stub-zone:
211 # name: "home.lan"
212 # stub-addr: 10.0.0.111@53
213
214#
215# include: stub-zone ?????
216#
217
218
219 # If you have an internal or private DNS names the external DNS servers can
220 # not resolve, then you can assign domain name strings to be redirected to a
221 # seperate dns server. For example, our comapny has the domain
222 # organization.com and the domain name internal.organization.com can not be
223 # resolved by Google's public DNS, but can be resolved by our private DNS
224 # server located at 1.1.1.1. The following tells Unbound that any
225 # organization.com domain, i.e. *.organization.com be dns resolved by 1.1.1.1
226 # instead of the public dns servers.
227 #
228 # forward-zone:
229 # name: "organization.com"
230 # forward-addr: 1.1.1.1 # Internal or private DNS
231
232 # Use the following forward-zone to forward all queries to Google DNS,
233 # OpenDNS.com or your local ISP's dns servers for example. To test resolution
234 # speeds use "drill calomel.org @8.8.8.8" and look for the "Query time:" in
235 # milliseconds.
236 #
237 # forward-zone:
238 # name: "."
239 # forward-addr: 8.8.8.8 # Google Public DNS
240 # forward-addr: 74.82.42.42 # Hurricane Electric
241 # forward-addr: 4.2.2.4 # Level3 Verizon
242
243
244 include: /var/unbound/forward-zone
245
246#
247## Authoritative, validating, recursive caching DNS
248## unbound.conf -- https://calomel.org
249
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