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+#
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+# Example configuration file.
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+#
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+# See unbound.conf(5) man page
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+#
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+# this is a comment.
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+
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+#Use this to include other text into the file.
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+#include: "otherfile.conf"
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+
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+# The server clause sets the main parameters.
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+server:
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+ # whitespace is not necessary, but looks cleaner.
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+
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+ # verbosity number, 0 is least verbose. 1 is default.
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+ verbosity: 1
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+
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+ # print statistics to the log (for every thread) every N seconds.
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+ # Set to "" or 0 to disable. Default is disabled.
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+ # Needs to be disabled for munin plugin
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+ statistics-interval: 0
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+
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+ # enable shm for stats, default no. if you enable also enable
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+ # statistics-interval, every time it also writes stats to the
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+ # shared memory segment keyed with shm-key.
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+ # shm-enable: no
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+
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+ # shm for stats uses this key, and key+1 for the shared mem segment.
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+ # shm-key: 11777
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+
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+ # enable cumulative statistics, without clearing them after printing.
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+ # Needs to be disabled for munin plugin
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+ statistics-cumulative: no
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+
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+ # enable extended statistics (query types, answer codes, status)
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+ # printed from unbound-control. default off, because of speed.
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+ # Needs to be enabled for munin plugin
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+ extended-statistics: yes
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+
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+ # number of threads to create. 1 disables threading.
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+ num-threads: 4
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+
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+ # specify the interfaces to answer queries from by ip-address.
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+ # The default is to listen to localhost (127.0.0.1 and ::1).
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+ # specify 0.0.0.0 and ::0 to bind to all available interfaces.
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+ # specify every interface[@port] on a new 'interface:' labelled line.
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+ # The listen interfaces are not changed on reload, only on restart.
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+ interface: 0.0.0.0
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+ # interface: ::0
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+ # interface: 192.0.2.153
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+ # interface: 192.0.2.154
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+ # interface: 192.0.2.154@5003
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+ # interface: 2001:DB8::5
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+ #
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+ # for dns over tls and raw dns over port 80
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+ # interface: 0.0.0.0@443
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+ # interface: ::0@443
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+ # interface: 0.0.0.0@80
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+ # interface: ::0@80
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+
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+ # enable this feature to copy the source address of queries to reply.
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+ # Socket options are not supported on all platforms. experimental.
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+ # interface-automatic: yes
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+ #
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+ # NOTE: Enable this option when specifying interface 0.0.0.0 or ::0
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+ # NOTE: Disabled per Fedora policy not to listen to * on default install
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+ # NOTE: If deploying on non-default port, eg 80/443, this needs to be disabled
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+ interface-automatic: no
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+
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+ # port to answer queries from
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+ port: 53
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+
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+ # specify the interfaces to send outgoing queries to authoritative
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+ # server from by ip-address. If none, the default (all) interface
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+ # is used. Specify every interface on a 'outgoing-interface:' line.
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+ # outgoing-interface: 192.0.2.153
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+ # outgoing-interface: 2001:DB8::5
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+ # outgoing-interface: 2001:DB8::6
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+
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+ # Specify a netblock to use remainder 64 bits as random bits for
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+ # upstream queries. Uses freebind option (Linux).
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+ # outgoing-interface: 2001:DB8::/64
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+ # Also (Linux:) ip -6 addr add 2001:db8::/64 dev lo
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+ # And: ip -6 route add local 2001:db8::/64 dev lo
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+ # And set prefer-ip6: yes to use the ip6 randomness from a netblock.
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+ # Set this to yes to prefer ipv6 upstream servers over ipv4.
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+ # prefer-ip6: no
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+
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+ # number of ports to allocate per thread, determines the size of the
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+ # port range that can be open simultaneously. About double the
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+ # num-queries-per-thread, or, use as many as the OS will allow you.
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+ # outgoing-range: 4096
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+
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+ # permit unbound to use this port number or port range for
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+ # making outgoing queries, using an outgoing interface.
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+ # Only ephemeral ports are allowed by SElinux
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+ outgoing-port-permit: 32768-60999
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+
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+ # deny unbound the use this of port number or port range for
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+ # making outgoing queries, using an outgoing interface.
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+ # Use this to make sure unbound does not grab a UDP port that some
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+ # other server on this computer needs. The default is to avoid
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+ # IANA-assigned port numbers.
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+ # If multiple outgoing-port-permit and outgoing-port-avoid options
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+ # are present, they are processed in order.
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+ # Our SElinux policy does not allow non-ephemeral ports to be used
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+ outgoing-port-avoid: 0-32767
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+
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+ # number of outgoing simultaneous tcp buffers to hold per thread.
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+ # outgoing-num-tcp: 10
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+
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+ # number of incoming simultaneous tcp buffers to hold per thread.
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+ # incoming-num-tcp: 10
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+
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+ # buffer size for UDP port 53 incoming (SO_RCVBUF socket option).
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+ # 0 is system default. Use 4m to catch query spikes for busy servers.
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+ # so-rcvbuf: 0
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+
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+ # buffer size for UDP port 53 outgoing (SO_SNDBUF socket option).
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+ # 0 is system default. Use 4m to handle spikes on very busy servers.
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+ # so-sndbuf: 0
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+
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+ # use SO_REUSEPORT to distribute queries over threads.
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+ so-reuseport: yes
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+
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+ # use IP_TRANSPARENT so the interface: addresses can be non-local
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+ # and you can config non-existing IPs that are going to work later on
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+ # (uses IP_BINDANY on FreeBSD).
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+ ip-transparent: yes
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+
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+ # use IP_FREEBIND so the interface: addresses can be non-local
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+ # and you can bind to nonexisting IPs and interfaces that are down.
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+ # Linux only. On Linux you also have ip-transparent that is similar.
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+ # ip-freebind: no
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+
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+ # EDNS reassembly buffer to advertise to UDP peers (the actual buffer
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+ # is set with msg-buffer-size). 1472 can solve fragmentation (timeouts).
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+ # edns-buffer-size: 4096
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+
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+ # Maximum UDP response size (not applied to TCP response).
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+ # Suggested values are 512 to 4096. Default is 4096. 65536 disables it.
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+ # 3072 causes +dnssec any isc.org queries to need TC=1.
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+ # Helps mitigating DDOS
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+ max-udp-size: 3072
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+
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+ # buffer size for handling DNS data. No messages larger than this
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+ # size can be sent or received, by UDP or TCP. In bytes.
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+ # msg-buffer-size: 65552
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+
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+ # the amount of memory to use for the message cache.
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+ # plain value in bytes or you can append k, m or G. default is "4Mb".
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+ # msg-cache-size: 4m
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+
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+ # the number of slabs to use for the message cache.
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+ # the number of slabs must be a power of 2.
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+ # more slabs reduce lock contention, but fragment memory usage.
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+ # msg-cache-slabs: 4
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+
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+ # the number of queries that a thread gets to service.
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+ # num-queries-per-thread: 1024
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+
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+ # if very busy, 50% queries run to completion, 50% get timeout in msec
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+ # jostle-timeout: 200
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+
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+ # msec to wait before close of port on timeout UDP. 0 disables.
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+ # delay-close: 0
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+
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+ # the amount of memory to use for the RRset cache.
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+ # plain value in bytes or you can append k, m or G. default is "4Mb".
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+ # rrset-cache-size: 4m
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+
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+ # the number of slabs to use for the RRset cache.
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+ # the number of slabs must be a power of 2.
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+ # more slabs reduce lock contention, but fragment memory usage.
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+ # rrset-cache-slabs: 4
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+
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+ # the time to live (TTL) value lower bound, in seconds. Default 0.
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+ # If more than an hour could easily give trouble due to stale data.
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+ # cache-min-ttl: 0
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+
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+ # the time to live (TTL) value cap for RRsets and messages in the
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+ # cache. Items are not cached for longer. In seconds.
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+ # cache-max-ttl: 86400
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+
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+ # the time to live (TTL) value cap for negative responses in the cache
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+ # cache-max-negative-ttl: 3600
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+
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+ # the time to live (TTL) value for cached roundtrip times, lameness and
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+ # EDNS version information for hosts. In seconds.
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+ # infra-host-ttl: 900
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+
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+ # minimum wait time for responses, increase if uplink is long. In msec.
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+ # infra-cache-min-rtt: 50
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+
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+ # the number of slabs to use for the Infrastructure cache.
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+ # the number of slabs must be a power of 2.
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+ # more slabs reduce lock contention, but fragment memory usage.
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+ # infra-cache-slabs: 4
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+
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+ # the maximum number of hosts that are cached (roundtrip, EDNS, lame).
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+ # infra-cache-numhosts: 10000
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+
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+ # define a number of tags here, use with local-zone, access-control.
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+ # repeat the define-tag statement to add additional tags.
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+ # define-tag: "tag1 tag2 tag3"
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+
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+ # Enable IPv4, "yes" or "no".
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+ do-ip4: yes
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+
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+ # Enable IPv6, "yes" or "no".
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+ do-ip6: no
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+
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+ # Enable UDP, "yes" or "no".
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+ # NOTE: if setting up an unbound on tls443 for public use, you might want to
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+ # disable UDP to avoid being used in DNS amplification attacks.
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+ do-udp: yes
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+
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+ # Enable TCP, "yes" or "no".
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+ do-tcp: yes
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+
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+ # upstream connections use TCP only (and no UDP), "yes" or "no"
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+ # useful for tunneling scenarios, default no.
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+ # tcp-upstream: no
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+
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+ # upstream connections also use UDP (even if do-udp is no).
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+ # useful if if you want UDP upstream, but don't provide UDP downstream.
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+ # udp-upstream-without-downstream: no
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+
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+ # Maximum segment size (MSS) of TCP socket on which the server
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+ # responds to queries. Default is 0, system default MSS.
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+ # tcp-mss: 0
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+
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+ # Maximum segment size (MSS) of TCP socket for outgoing queries.
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+ # Default is 0, system default MSS.
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+ # outgoing-tcp-mss: 0
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+
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+ # Fedora note: do not activate this - can cause a crash
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+ # Use systemd socket activation for UDP, TCP, and control sockets.
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+ # use-systemd: no
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+
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+ # Detach from the terminal, run in background, "yes" or "no".
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+ # Set the value to "no" when unbound runs as systemd service.
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+ # do-daemonize: yes
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+
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+ # control which clients are allowed to make (recursive) queries
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+ # to this server. Specify classless netblocks with /size and action.
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+ # By default everything is refused, except for localhost.
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+ # Choose deny (drop message), refuse (polite error reply),
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+ # allow (recursive ok), allow_setrd (recursive ok, rd bit is forced on),
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+ # allow_snoop (recursive and nonrecursive ok)
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+ # deny_non_local (drop queries unless can be answered from local-data)
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+ # refuse_non_local (like deny_non_local but polite error reply).
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+ access-control: 0.0.0.0/0 refuse
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+ access-control: 127.0.0.0/8 allow
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+ access-control: 172.25.0.0/16 allow
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+ access-control: 192.168.0.0/16 allow
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+ # access-control: ::0/0 refuse
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+ # access-control: ::1 allow
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+ # access-control: ::ffff:127.0.0.1 allow
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+
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+ # tag access-control with list of tags (in "" with spaces between)
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+ # Clients using this access control element use localzones that
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+ # are tagged with one of these tags.
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+ # access-control-tag: 192.0.2.0/24 "tag2 tag3"
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+
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+ # set action for particular tag for given access control element
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+ # if you have multiple tag values, the tag used to lookup the action
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+ # is the first tag match between access-control-tag and local-zone-tag
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+ # where "first" comes from the order of the define-tag values.
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+ # access-control-tag-action: 192.0.2.0/24 tag3 refuse
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+
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+ # set redirect data for particular tag for access control element
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+ # access-control-tag-data: 192.0.2.0/24 tag2 "A 127.0.0.1"
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+
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+ # Set view for access control element
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+ # access-control-view: 192.0.2.0/24 viewname
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+
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+ # if given, a chroot(2) is done to the given directory.
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+ # i.e. you can chroot to the working directory, for example,
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+ # for extra security, but make sure all files are in that directory.
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+ #
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+ # If chroot is enabled, you should pass the configfile (from the
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+ # commandline) as a full path from the original root. After the
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+ # chroot has been performed the now defunct portion of the config
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+ # file path is removed to be able to reread the config after a reload.
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+ #
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+ # All other file paths (working dir, logfile, roothints, and
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+ # key files) can be specified in several ways:
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+ # o as an absolute path relative to the new root.
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+ # o as a relative path to the working directory.
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+ # o as an absolute path relative to the original root.
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+ # In the last case the path is adjusted to remove the unused portion.
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+ #
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+ # The pid file can be absolute and outside of the chroot, it is
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+ # written just prior to performing the chroot and dropping permissions.
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+ #
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+ # Additionally, unbound may need to access /dev/random (for entropy).
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+ # How to do this is specific to your OS.
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+ #
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+ # If you give "" no chroot is performed. The path must not end in a /.
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+ # chroot: "/var/lib/unbound"
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+ chroot: ""
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+
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+ # if given, user privileges are dropped (after binding port),
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+ # and the given username is assumed. Default is user "unbound".
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+ # If you give "" no privileges are dropped.
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+ username: "unbound"
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+
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+ # the working directory. The relative files in this config are
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+ # relative to this directory. If you give "" the working directory
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+ # is not changed.
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+ # If you give a server: directory: dir before include: file statements
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+ # then those includes can be relative to the working directory.
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+ directory: "/etc/unbound"
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+
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+ # the log file, "" means log to stderr.
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+ # Use of this option sets use-syslog to "no".
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+ # logfile: ""
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+
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+ # Log to syslog(3) if yes. The log facility LOG_DAEMON is used to
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+ # log to. If yes, it overrides the logfile.
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+ # use-syslog: yes
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+
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+ # Log identity to report. if empty, defaults to the name of argv[0]
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+ # (usually "unbound").
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+ # log-identity: ""
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+
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+ # print UTC timestamp in ascii to logfile, default is epoch in seconds.
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+ log-time-ascii: yes
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+
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+ # print one line with time, IP, name, type, class for every query.
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+ # log-queries: no
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+
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+ # print one line per reply, with time, IP, name, type, class, rcode,
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+ # timetoresolve, fromcache and responsesize.
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+ # log-replies: no
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+
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+ # the pid file. Can be an absolute path outside of chroot/work dir.
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+ pidfile: "/var/run/unbound/unbound.pid"
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+
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+ # file to read root hints from.
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+ # get one from https://www.internic.net/domain/named.cache
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+ # root-hints: ""
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+
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+ # enable to not answer id.server and hostname.bind queries.
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+ # hide-identity: no
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+
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+ # enable to not answer version.server and version.bind queries.
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+ # hide-version: no
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+
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+ # enable to not answer trustanchor.unbound queries.
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+ # hide-trustanchor: no
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+
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+ # the identity to report. Leave "" or default to return hostname.
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+ # identity: ""
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+
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+ # the version to report. Leave "" or default to return package version.
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+ # version: ""
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+
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+ # the target fetch policy.
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+ # series of integers describing the policy per dependency depth.
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+ # The number of values in the list determines the maximum dependency
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+ # depth the recursor will pursue before giving up. Each integer means:
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+ # -1 : fetch all targets opportunistically,
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+ # 0: fetch on demand,
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+ # positive value: fetch that many targets opportunistically.
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+ # Enclose the list of numbers between quotes ("").
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+ # target-fetch-policy: "3 2 1 0 0"
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+
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+ # Harden against very small EDNS buffer sizes.
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+ # harden-short-bufsize: no
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+
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+ # Harden against unseemly large queries.
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+ # harden-large-queries: no
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+
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+ # Harden against out of zone rrsets, to avoid spoofing attempts.
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+ harden-glue: yes
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+
|
|
|
+ # Harden against receiving dnssec-stripped data. If you turn it
|
|
|
+ # off, failing to validate dnskey data for a trustanchor will
|
|
|
+ # trigger insecure mode for that zone (like without a trustanchor).
|
|
|
+ # Default on, which insists on dnssec data for trust-anchored zones.
|
|
|
+ harden-dnssec-stripped: yes
|
|
|
+
|
|
|
+ # Harden against queries that fall under dnssec-signed nxdomain names.
|
|
|
+ harden-below-nxdomain: yes
|
|
|
+
|
|
|
+ # Harden the referral path by performing additional queries for
|
|
|
+ # infrastructure data. Validates the replies (if possible).
|
|
|
+ # Default off, because the lookups burden the server. Experimental
|
|
|
+ # implementation of draft-wijngaards-dnsext-resolver-side-mitigation.
|
|
|
+ harden-referral-path: yes
|
|
|
+
|
|
|
+ # Harden against algorithm downgrade when multiple algorithms are
|
|
|
+ # advertised in the DS record. If no, allows the weakest algorithm
|
|
|
+ # to validate the zone.
|
|
|
+ # harden-algo-downgrade: no
|
|
|
+
|
|
|
+ # Sent minimum amount of information to upstream servers to enhance
|
|
|
+ # privacy. Only sent minimum required labels of the QNAME and set QTYPE
|
|
|
+ # to NS when possible.
|
|
|
+ qname-minimisation: yes
|
|
|
+
|
|
|
+ # QNAME minimisation in strict mode. Do not fall-back to sending full
|
|
|
+ # QNAME to potentially broken nameservers. A lot of domains will not be
|
|
|
+ # resolvable when this option in enabled.
|
|
|
+ # This option only has effect when qname-minimisation is enabled.
|
|
|
+ # qname-minimisation-strict: no
|
|
|
+
|
|
|
+ # Aggressive NSEC uses the DNSSEC NSEC chain to synthesize NXDOMAIN
|
|
|
+ # and other denials, using information from previous NXDOMAINs answers.
|
|
|
+ aggressive-nsec: yes
|
|
|
+
|
|
|
+ # Use 0x20-encoded random bits in the query to foil spoof attempts.
|
|
|
+ # This feature is an experimental implementation of draft dns-0x20.
|
|
|
+ # use-caps-for-id: no
|
|
|
+
|
|
|
+ # Domains (and domains in them) without support for dns-0x20 and
|
|
|
+ # the fallback fails because they keep sending different answers.
|
|
|
+ # caps-whitelist: "licdn.com"
|
|
|
+ # caps-whitelist: "senderbase.org"
|
|
|
+
|
|
|
+ # Enforce privacy of these addresses. Strips them away from answers.
|
|
|
+ # It may cause DNSSEC validation to additionally mark it as bogus.
|
|
|
+ # Protects against 'DNS Rebinding' (uses browser as network proxy).
|
|
|
+ # Only 'private-domain' and 'local-data' names are allowed to have
|
|
|
+ # these private addresses. No default.
|
|
|
+ # private-address: 10.0.0.0/8
|
|
|
+ # private-address: 172.16.0.0/12
|
|
|
+ # private-address: 192.168.0.0/16
|
|
|
+ # private-address: 169.254.0.0/16
|
|
|
+ # private-address: fd00::/8
|
|
|
+ # private-address: fe80::/10
|
|
|
+ # private-address: ::ffff:0:0/96
|
|
|
+
|
|
|
+ # Allow the domain (and its subdomains) to contain private addresses.
|
|
|
+ # local-data statements are allowed to contain private addresses too.
|
|
|
+ # private-domain: "example.com"
|
|
|
+
|
|
|
+ # If nonzero, unwanted replies are not only reported in statistics,
|
|
|
+ # but also a running total is kept per thread. If it reaches the
|
|
|
+ # threshold, a warning is printed and a defensive action is taken,
|
|
|
+ # the cache is cleared to flush potential poison out of it.
|
|
|
+ # A suggested value is 10000000, the default is 0 (turned off).
|
|
|
+ unwanted-reply-threshold: 10000000
|
|
|
+
|
|
|
+ # Do not query the following addresses. No DNS queries are sent there.
|
|
|
+ # List one address per entry. List classless netblocks with /size,
|
|
|
+ # do-not-query-address: 127.0.0.1/8
|
|
|
+ # do-not-query-address: ::1
|
|
|
+
|
|
|
+ # if yes, the above default do-not-query-address entries are present.
|
|
|
+ # if no, localhost can be queried (for testing and debugging).
|
|
|
+ # do-not-query-localhost: yes
|
|
|
+
|
|
|
+ # if yes, perform prefetching of almost expired message cache entries.
|
|
|
+ prefetch: yes
|
|
|
+
|
|
|
+ # if yes, perform key lookups adjacent to normal lookups.
|
|
|
+ prefetch-key: yes
|
|
|
+
|
|
|
+ # if yes, Unbound rotates RRSet order in response.
|
|
|
+ rrset-roundrobin: yes
|
|
|
+
|
|
|
+ # if yes, Unbound doesn't insert authority/additional sections
|
|
|
+ # into response messages when those sections are not required.
|
|
|
+ minimal-responses: yes
|
|
|
+
|
|
|
+ # true to disable DNSSEC lameness check in iterator.
|
|
|
+ # disable-dnssec-lame-check: no
|
|
|
+
|
|
|
+ # module configuration of the server. A string with identifiers
|
|
|
+ # separated by spaces. Syntax: "[dns64] [validator] iterator"
|
|
|
+ module-config: "ipsecmod validator iterator"
|
|
|
+
|
|
|
+ # File with trusted keys, kept uptodate using RFC5011 probes,
|
|
|
+ # initial file like trust-anchor-file, then it stores metadata.
|
|
|
+ # Use several entries, one per domain name, to track multiple zones.
|
|
|
+ #
|
|
|
+ # If you want to perform DNSSEC validation, run unbound-anchor before
|
|
|
+ # you start unbound (i.e. in the system boot scripts). And enable:
|
|
|
+ # Please note usage of unbound-anchor root anchor is at your own risk
|
|
|
+ # and under the terms of our LICENSE (see that file in the source).
|
|
|
+ # auto-trust-anchor-file: "/var/lib/unbound/root.key"
|
|
|
+
|
|
|
+ # trust anchor signaling sends a RFC8145 key tag query after priming.
|
|
|
+ trust-anchor-signaling: yes
|
|
|
+
|
|
|
+ # Root key trust anchor sentinel (draft-ietf-dnsop-kskroll-sentinel)
|
|
|
+ root-key-sentinel: yes
|
|
|
+
|
|
|
+ # File with DLV trusted keys. Same format as trust-anchor-file.
|
|
|
+ # There can be only one DLV configured, it is trusted from root down.
|
|
|
+ # DLV is going to be decommissioned. Please do not use it any more.
|
|
|
+ # dlv-anchor-file: "dlv.isc.org.key"
|
|
|
+
|
|
|
+ # File with trusted keys for validation. Specify more than one file
|
|
|
+ # with several entries, one file per entry.
|
|
|
+ # Zone file format, with DS and DNSKEY entries.
|
|
|
+ # Note this gets out of date, use auto-trust-anchor-file please.
|
|
|
+ # trust-anchor-file: ""
|
|
|
+
|
|
|
+ # Trusted key for validation. DS or DNSKEY. specify the RR on a
|
|
|
+ # single line, surrounded by "". TTL is ignored. class is IN default.
|
|
|
+ # Note this gets out of date, use auto-trust-anchor-file please.
|
|
|
+ # (These examples are from August 2007 and may not be valid anymore).
|
|
|
+ # trust-anchor: "nlnetlabs.nl. DNSKEY 257 3 5 AQPzzTWMz8qSWIQlfRnPckx2BiVmkVN6LPupO3mbz7FhLSnm26n6iG9N Lby97Ji453aWZY3M5/xJBSOS2vWtco2t8C0+xeO1bc/d6ZTy32DHchpW 6rDH1vp86Ll+ha0tmwyy9QP7y2bVw5zSbFCrefk8qCUBgfHm9bHzMG1U BYtEIQ=="
|
|
|
+ # trust-anchor: "jelte.nlnetlabs.nl. DS 42860 5 1 14D739EB566D2B1A5E216A0BA4D17FA9B038BE4A"
|
|
|
+
|
|
|
+ # File with trusted keys for validation. Specify more than one file
|
|
|
+ # with several entries, one file per entry. Like trust-anchor-file
|
|
|
+ # but has a different file format. Format is BIND-9 style format,
|
|
|
+ # the trusted-keys { name flag proto algo "key"; }; clauses are read.
|
|
|
+ # you need external update procedures to track changes in keys.
|
|
|
+ # trusted-keys-file: ""
|
|
|
+ #
|
|
|
+ # trusted-keys-file: /etc/unbound/keys.d/*.key
|
|
|
+ # auto-trust-anchor-file: "/var/lib/unbound/root.key"
|
|
|
+
|
|
|
+ # Ignore chain of trust. Domain is treated as insecure.
|
|
|
+ domain-insecure: "int.example.com"
|
|
|
+
|
|
|
+ # Override the date for validation with a specific fixed date.
|
|
|
+ # Do not set this unless you are debugging signature inception
|
|
|
+ # and expiration. "" or "0" turns the feature off. -1 ignores date.
|
|
|
+ # val-override-date: ""
|
|
|
+
|
|
|
+ # The time to live for bogus data, rrsets and messages. This avoids
|
|
|
+ # some of the revalidation, until the time interval expires. in secs.
|
|
|
+ # val-bogus-ttl: 60
|
|
|
+
|
|
|
+ # The signature inception and expiration dates are allowed to be off
|
|
|
+ # by 10% of the signature lifetime (expir-incep) from our local clock.
|
|
|
+ # This leeway is capped with a minimum and a maximum. In seconds.
|
|
|
+ # val-sig-skew-min: 3600
|
|
|
+ # val-sig-skew-max: 86400
|
|
|
+
|
|
|
+ # Should additional section of secure message also be kept clean of
|
|
|
+ # unsecure data. Useful to shield the users of this validator from
|
|
|
+ # potential bogus data in the additional section. All unsigned data
|
|
|
+ # in the additional section is removed from secure messages.
|
|
|
+ val-clean-additional: yes
|
|
|
+
|
|
|
+ # Turn permissive mode on to permit bogus messages. Thus, messages
|
|
|
+ # for which security checks failed will be returned to clients,
|
|
|
+ # instead of SERVFAIL. It still performs the security checks, which
|
|
|
+ # result in interesting log files and possibly the AD bit in
|
|
|
+ # replies if the message is found secure. The default is off.
|
|
|
+ # NOTE: TURNING THIS ON DISABLES ALL DNSSEC SECURITY
|
|
|
+ val-permissive-mode: no
|
|
|
+
|
|
|
+ # Ignore the CD flag in incoming queries and refuse them bogus data.
|
|
|
+ # Enable it if the only clients of unbound are legacy servers (w2008)
|
|
|
+ # that set CD but cannot validate themselves.
|
|
|
+ # ignore-cd-flag: no
|
|
|
+
|
|
|
+ # Serve expired responses from cache, with TTL 0 in the response,
|
|
|
+ # and then attempt to fetch the data afresh.
|
|
|
+ serve-expired: yes
|
|
|
+
|
|
|
+ # Have the validator log failed validations for your diagnosis.
|
|
|
+ # 0: off. 1: A line per failed user query. 2: With reason and bad IP.
|
|
|
+ val-log-level: 1
|
|
|
+
|
|
|
+ # It is possible to configure NSEC3 maximum iteration counts per
|
|
|
+ # keysize. Keep this table very short, as linear search is done.
|
|
|
+ # A message with an NSEC3 with larger count is marked insecure.
|
|
|
+ # List in ascending order the keysize and count values.
|
|
|
+ # val-nsec3-keysize-iterations: "1024 150 2048 500 4096 2500"
|
|
|
+
|
|
|
+ # instruct the auto-trust-anchor-file probing to add anchors after ttl.
|
|
|
+ # add-holddown: 2592000 # 30 days
|
|
|
+
|
|
|
+ # instruct the auto-trust-anchor-file probing to del anchors after ttl.
|
|
|
+ # del-holddown: 2592000 # 30 days
|
|
|
+
|
|
|
+ # auto-trust-anchor-file probing removes missing anchors after ttl.
|
|
|
+ # If the value 0 is given, missing anchors are not removed.
|
|
|
+ # keep-missing: 31622400 # 366 days
|
|
|
+
|
|
|
+ # debug option that allows very small holddown times for key rollover,
|
|
|
+ # otherwise the RFC mandates probe intervals must be at least 1 hour.
|
|
|
+ # permit-small-holddown: no
|
|
|
+
|
|
|
+ # the amount of memory to use for the key cache.
|
|
|
+ # plain value in bytes or you can append k, m or G. default is "4Mb".
|
|
|
+ # key-cache-size: 4m
|
|
|
+
|
|
|
+ # the number of slabs to use for the key cache.
|
|
|
+ # the number of slabs must be a power of 2.
|
|
|
+ # more slabs reduce lock contention, but fragment memory usage.
|
|
|
+ # key-cache-slabs: 4
|
|
|
+
|
|
|
+ # the amount of memory to use for the negative cache (used for DLV).
|
|
|
+ # plain value in bytes or you can append k, m or G. default is "1Mb".
|
|
|
+ # neg-cache-size: 1m
|
|
|
+
|
|
|
+ # By default, for a number of zones a small default 'nothing here'
|
|
|
+ # reply is built-in. Query traffic is thus blocked. If you
|
|
|
+ # wish to serve such zone you can unblock them by uncommenting one
|
|
|
+ # of the nodefault statements below.
|
|
|
+ # You may also have to use domain-insecure: zone to make DNSSEC work,
|
|
|
+ # unless you have your own trust anchors for this zone.
|
|
|
+ # local-zone: "localhost." nodefault
|
|
|
+ # local-zone: "127.in-addr.arpa." nodefault
|
|
|
+ # 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
|
|
|
+ # local-zone: "onion." nodefault
|
|
|
+ # local-zone: "test." nodefault
|
|
|
+ # local-zone: "invalid." nodefault
|
|
|
+ # local-zone: "10.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "16.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "17.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "18.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "19.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "20.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "21.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "22.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "23.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "24.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "25.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "26.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "27.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "28.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "29.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "30.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "31.172.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "168.192.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "0.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "254.169.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "2.0.192.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "100.51.198.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "113.0.203.in-addr.arpa." nodefault
|
|
|
+ # local-zone: "255.255.255.255.in-addr.arpa." nodefault
|
|
|
+ # 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
|
|
|
+ # local-zone: "d.f.ip6.arpa." nodefault
|
|
|
+ # local-zone: "8.e.f.ip6.arpa." nodefault
|
|
|
+ # local-zone: "9.e.f.ip6.arpa." nodefault
|
|
|
+ # local-zone: "a.e.f.ip6.arpa." nodefault
|
|
|
+ # local-zone: "b.e.f.ip6.arpa." nodefault
|
|
|
+ # local-zone: "8.b.d.0.1.0.0.2.ip6.arpa." nodefault
|
|
|
+ # And for 64.100.in-addr.arpa. to 127.100.in-addr.arpa.
|
|
|
+
|
|
|
+ # If unbound is running service for the local host then it is useful
|
|
|
+ # to perform lan-wide lookups to the upstream, and unblock the
|
|
|
+ # long list of local-zones above. If this unbound is a dns server
|
|
|
+ # for a network of computers, disabled is better and stops information
|
|
|
+ # leakage of local lan information.
|
|
|
+ # unblock-lan-zones: no
|
|
|
+
|
|
|
+ # The insecure-lan-zones option disables validation for
|
|
|
+ # these zones, as if they were all listed as domain-insecure.
|
|
|
+ # insecure-lan-zones: no
|
|
|
+
|
|
|
+ # a number of locally served zones can be configured.
|
|
|
+ # local-zone: <zone> <type>
|
|
|
+ # local-data: "<resource record string>"
|
|
|
+ # o deny serves local data (if any), else, drops queries.
|
|
|
+ # o refuse serves local data (if any), else, replies with error.
|
|
|
+ # o static serves local data, else, nxdomain or nodata answer.
|
|
|
+ # o transparent gives local data, but resolves normally for other names
|
|
|
+ # o redirect serves the zone data for any subdomain in the zone.
|
|
|
+ # o nodefault can be used to normally resolve AS112 zones.
|
|
|
+ # o typetransparent resolves normally for other types and other names
|
|
|
+ # o inform acts like transparent, but logs client IP address
|
|
|
+ # o inform_deny drops queries and logs client IP address
|
|
|
+ # o always_transparent, always_refuse, always_nxdomain, resolve in
|
|
|
+ # that way but ignore local data for that name
|
|
|
+ # o noview breaks out of that view towards global local-zones.
|
|
|
+ #
|
|
|
+ # defaults are localhost address, reverse for 127.0.0.1 and ::1
|
|
|
+ # and nxdomain for AS112 zones. If you configure one of these zones
|
|
|
+ # the default content is omitted, or you can omit it with 'nodefault'.
|
|
|
+ #
|
|
|
+ # If you configure local-data without specifying local-zone, by
|
|
|
+ # default a transparent local-zone is created for the data.
|
|
|
+ #
|
|
|
+ # You can add locally served data with
|
|
|
+ # local-zone: "local." static
|
|
|
+ # local-data: "mycomputer.local. IN A 192.0.2.51"
|
|
|
+ # local-data: 'mytext.local TXT "content of text record"'
|
|
|
+ #
|
|
|
+ # You can override certain queries with
|
|
|
+ # local-data: "adserver.example.com A 127.0.0.1"
|
|
|
+ #
|
|
|
+ # You can redirect a domain to a fixed address with
|
|
|
+ # (this makes example.com, www.example.com, etc, all go to 192.0.2.3)
|
|
|
+ # local-zone: "example.com" redirect
|
|
|
+ # local-data: "example.com A 192.0.2.3"
|
|
|
+ #
|
|
|
+ # Shorthand to make PTR records, "IPv4 name" or "IPv6 name".
|
|
|
+ # You can also add PTR records using local-data directly, but then
|
|
|
+ # you need to do the reverse notation yourself.
|
|
|
+ # local-data-ptr: "192.0.2.3 www.example.com"
|
|
|
+
|
|
|
+ include: /etc/unbound/local.d/*.conf
|
|
|
+
|
|
|
+ # tag a localzone with a list of tag names (in "" with spaces between)
|
|
|
+ # local-zone-tag: "example.com" "tag2 tag3"
|
|
|
+
|
|
|
+ # add a netblock specific override to a localzone, with zone type
|
|
|
+ # local-zone-override: "example.com" 192.0.2.0/24 refuse
|
|
|
+
|
|
|
+ # service clients over SSL (on the TCP sockets), with plain DNS inside
|
|
|
+ # the SSL stream. Give the certificate to use and private key.
|
|
|
+ # default is "" (disabled). requires restart to take effect.
|
|
|
+ # tls-service-key: "/etc/unbound/unbound_server.key"
|
|
|
+ # tls-service-pem: "/etc/unbound/unbound_server.pem"
|
|
|
+ # tls-port: 853
|
|
|
+ #
|
|
|
+ # request upstream over SSL (with plain DNS inside the SSL stream).
|
|
|
+ # Default is no. Can be turned on and off with unbound-control.
|
|
|
+ # tls-upstream: no
|
|
|
+
|
|
|
+ # Certificates used to authenticate connections made upstream.
|
|
|
+ # tls-cert-bundle: ""
|
|
|
+
|
|
|
+ # Add system certs to the cert bundle, from the Windows Cert Store
|
|
|
+ # tls-win-cert: no
|
|
|
+
|
|
|
+ # Also serve tls on these port numbers (eg. 443, ...), by listing
|
|
|
+ # tls-additional-ports: portno for each of the port numbers.
|
|
|
+
|
|
|
+ # DNS64 prefix. Must be specified when DNS64 is use.
|
|
|
+ # Enable dns64 in module-config. Used to synthesize IPv6 from IPv4.
|
|
|
+ # dns64-prefix: 64:ff9b::0/96
|
|
|
+
|
|
|
+ # ratelimit for uncached, new queries, this limits recursion effort.
|
|
|
+ # ratelimiting is experimental, and may help against randomqueryflood.
|
|
|
+ # if 0(default) it is disabled, otherwise state qps allowed per zone.
|
|
|
+ # ratelimit: 0
|
|
|
+
|
|
|
+ # ratelimits are tracked in a cache, size in bytes of cache (or k,m).
|
|
|
+ # ratelimit-size: 4m
|
|
|
+ # ratelimit cache slabs, reduces lock contention if equal to cpucount.
|
|
|
+ # ratelimit-slabs: 4
|
|
|
+
|
|
|
+ # 0 blocks when ratelimited, otherwise let 1/xth traffic through
|
|
|
+ # ratelimit-factor: 10
|
|
|
+
|
|
|
+ # what is considered a low rtt (ping time for upstream server), in msec
|
|
|
+ # low-rtt: 45
|
|
|
+ # select low rtt this many times out of 1000. 0 means the fast server
|
|
|
+ # select is disabled. prefetches are not sped up.
|
|
|
+ # low-rtt-permil: 0
|
|
|
+
|
|
|
+ # override the ratelimit for a specific domain name.
|
|
|
+ # give this setting multiple times to have multiple overrides.
|
|
|
+ # ratelimit-for-domain: example.com 1000
|
|
|
+ # override the ratelimits for all domains below a domain name
|
|
|
+ # can give this multiple times, the name closest to the zone is used.
|
|
|
+ # ratelimit-below-domain: com 1000
|
|
|
+
|
|
|
+ # global query ratelimit for all ip addresses.
|
|
|
+ # feature is experimental.
|
|
|
+ # if 0(default) it is disabled, otherwise states qps allowed per ip address
|
|
|
+ # ip-ratelimit: 0
|
|
|
+
|
|
|
+ # ip ratelimits are tracked in a cache, size in bytes of cache (or k,m).
|
|
|
+ # ip-ratelimit-size: 4m
|
|
|
+ # ip ratelimit cache slabs, reduces lock contention if equal to cpucount.
|
|
|
+ # ip-ratelimit-slabs: 4
|
|
|
+
|
|
|
+ # 0 blocks when ip is ratelimited, otherwise let 1/xth traffic through
|
|
|
+ # ip-ratelimit-factor: 10
|
|
|
+
|
|
|
+ # Specific options for ipsecmod. unbound needs to be configured with
|
|
|
+ # --enable-ipsecmod for these to take effect.
|
|
|
+ #
|
|
|
+ # Enable or disable ipsecmod (it still needs to be defined in
|
|
|
+ # module-config above). Can be used when ipsecmod needs to be
|
|
|
+ # enabled/disabled via remote-control(below).
|
|
|
+ # Fedora: module will be enabled on-demand by libreswan
|
|
|
+ ipsecmod-enabled: no
|
|
|
+
|
|
|
+ # Path to executable external hook. It must be defined when ipsecmod is
|
|
|
+ # listed in module-config (above).
|
|
|
+ # ipsecmod-hook: "./my_executable"
|
|
|
+ ipsecmod-hook:/usr/libexec/ipsec/_unbound-hook
|
|
|
+
|
|
|
+ # When enabled unbound will reply with SERVFAIL if the return value of
|
|
|
+ # the ipsecmod-hook is not 0.
|
|
|
+ # ipsecmod-strict: no
|
|
|
+ #
|
|
|
+ # Maximum time to live (TTL) for cached A/AAAA records with IPSECKEY.
|
|
|
+ # ipsecmod-max-ttl: 3600
|
|
|
+ #
|
|
|
+ # Reply with A/AAAA even if the relevant IPSECKEY is bogus. Mainly used for
|
|
|
+ # testing.
|
|
|
+ # ipsecmod-ignore-bogus: no
|
|
|
+ #
|
|
|
+ # Domains for which ipsecmod will be triggered. If not defined (default)
|
|
|
+ # all domains are treated as being whitelisted.
|
|
|
+ # ipsecmod-whitelist: "libreswan.org"
|
|
|
+ # ipsecmod-whitelist: "nlnetlabs.nl"
|
|
|
+
|
|
|
+# Python config section. To enable:
|
|
|
+# o use --with-pythonmodule to configure before compiling.
|
|
|
+# o list python in the module-config string (above) to enable.
|
|
|
+# o and give a python-script to run.
|
|
|
+python:
|
|
|
+ # Script file to load
|
|
|
+ # python-script: "/etc/unbound/ubmodule-tst.py"
|
|
|
+
|
|
|
+# Remote control config section.
|
|
|
+remote-control:
|
|
|
+ # Enable remote control with unbound-control(8) here.
|
|
|
+ # set up the keys and certificates with unbound-control-setup.
|
|
|
+ # Note: required for unbound-munin package
|
|
|
+ control-enable: yes
|
|
|
+
|
|
|
+ # Set to no and use an absolute path as control-interface to use
|
|
|
+ # a unix local named pipe for unbound-control.
|
|
|
+ # control-use-cert: yes
|
|
|
+
|
|
|
+ # what interfaces are listened to for remote control.
|
|
|
+ # give 0.0.0.0 and ::0 to listen to all interfaces.
|
|
|
+ # control-interface: 127.0.0.1
|
|
|
+ # control-interface: ::1
|
|
|
+
|
|
|
+ # port number for remote control operations.
|
|
|
+ # control-port: 8953
|
|
|
+
|
|
|
+ # unbound server key file.
|
|
|
+ server-key-file: "/etc/unbound/unbound_server.key"
|
|
|
+
|
|
|
+ # unbound server certificate file.
|
|
|
+ server-cert-file: "/etc/unbound/unbound_server.pem"
|
|
|
+
|
|
|
+ # unbound-control key file.
|
|
|
+ control-key-file: "/etc/unbound/unbound_control.key"
|
|
|
+
|
|
|
+ # unbound-control certificate file.
|
|
|
+ control-cert-file: "/etc/unbound/unbound_control.pem"
|
|
|
+
|
|
|
+# Stub and Forward zones
|
|
|
+include: /etc/unbound/conf.d/*.conf
|
|
|
+
|
|
|
+# Stub zones.
|
|
|
+# Create entries like below, to make all queries for 'example.com' and
|
|
|
+# 'example.org' go to the given list of nameservers. list zero or more
|
|
|
+# nameservers by hostname or by ipaddress. If you set stub-prime to yes,
|
|
|
+# the list is treated as priming hints (default is no).
|
|
|
+# With stub-first yes, it attempts without the stub if it fails.
|
|
|
+# Consider adding domain-insecure: name and local-zone: name nodefault
|
|
|
+# to the server: section if the stub is a locally served zone.
|
|
|
+# stub-zone:
|
|
|
+# name: "example.com"
|
|
|
+# stub-addr: 192.0.2.68
|
|
|
+# stub-prime: no
|
|
|
+# stub-first: no
|
|
|
+# stub-tls-upstream: no
|
|
|
+# stub-zone:
|
|
|
+# name: "example.org"
|
|
|
+# stub-host: ns.example.com.
|
|
|
+
|
|
|
+# You can now also dynamically create and delete stub-zone's using
|
|
|
+# unbound-control stub_add domain.com 1.2.3.4 5.6.7.8
|
|
|
+# unbound-control stub_remove domain.com 1.2.3.4 5.6.7.8
|
|
|
+
|
|
|
+# Forward zones
|
|
|
+# Create entries like below, to make all queries for 'example.com' and
|
|
|
+# 'example.org' go to the given list of servers. These servers have to handle
|
|
|
+# recursion to other nameservers. List zero or more nameservers by hostname
|
|
|
+# or by ipaddress. Use an entry with name "." to forward all queries.
|
|
|
+# If you enable forward-first, it attempts without the forward if it fails.
|
|
|
+forward-zone:
|
|
|
+ name: "int.example.com"
|
|
|
+ forward-host: serverb.lab.example.com
|
|
|
+ forward-host: serverc.lab.example.com
|
|
|
+ forward-first: yes
|
|
|
+forward-zone:
|
|
|
+ name: .
|
|
|
+ forward-addr: 172.25.250.254
|
|
|
+
|
|
|
+# You can now also dynamically create and delete forward-zone's using
|
|
|
+# unbound-control forward_add domain.com 1.2.3.4 5.6.7.8
|
|
|
+# unbound-control forward_remove domain.com 1.2.3.4 5.6.7.8
|
|
|
+
|
|
|
+# Authority zones
|
|
|
+# The data for these zones is kept locally, from a file or downloaded.
|
|
|
+# The data can be served to downstream clients, or used instead of the
|
|
|
+# upstream (which saves a lookup to the upstream). The first example
|
|
|
+# has a copy of the root for local usage. The second serves example.org
|
|
|
+# authoritatively. zonefile: reads from file (and writes to it if you also
|
|
|
+# download it), master: fetches with AXFR and IXFR, or url to zonefile.
|
|
|
+auth-zone:
|
|
|
+ name: "."
|
|
|
+ for-downstream: no
|
|
|
+ for-upstream: yes
|
|
|
+ fallback-enabled: yes
|
|
|
+ master: b.root-servers.net
|
|
|
+ master: c.root-servers.net
|
|
|
+ master: e.root-servers.net
|
|
|
+ master: f.root-servers.net
|
|
|
+ master: g.root-servers.net
|
|
|
+ master: k.root-servers.net
|
|
|
+# auth-zone:
|
|
|
+# name: "example.org"
|
|
|
+# for-downstream: yes
|
|
|
+# for-upstream: yes
|
|
|
+# zonefile: "example.org.zone"
|
|
|
+
|
|
|
+# Views
|
|
|
+# Create named views. Name must be unique. Map views to requests using
|
|
|
+# the access-control-view option. Views can contain zero or more local-zone
|
|
|
+# and local-data options. Options from matching views will override global
|
|
|
+# options. Global options will be used if no matching view is found.
|
|
|
+# With view-first yes, it will try to answer using the global local-zone and
|
|
|
+# local-data elements if there is no view specific match.
|
|
|
+# view:
|
|
|
+# name: "viewname"
|
|
|
+# local-zone: "example.com" redirect
|
|
|
+# local-data: "example.com A 192.0.2.3"
|
|
|
+# local-data-ptr: "192.0.2.3 www.example.com"
|
|
|
+# view-first: no
|
|
|
+# view:
|
|
|
+# name: "anotherview"
|
|
|
+# local-zone: "example.com" refuse
|
|
|
+
|
|
|
+# Fedora: DNSCrypt support not enabled since it requires linking to
|
|
|
+# another crypto library
|
|
|
+#
|
|
|
+# DNSCrypt
|
|
|
+# Caveats:
|
|
|
+# 1. the keys/certs cannot be produced by unbound. You can use dnscrypt-wrapper
|
|
|
+# for this: https://github.com/cofyc/dnscrypt-wrapper/blob/master/README.md#usage
|
|
|
+# 2. dnscrypt channel attaches to an interface. you MUST set interfaces to
|
|
|
+# listen on `dnscrypt-port` with the follo0wing snippet:
|
|
|
+# server:
|
|
|
+# interface: 0.0.0.0@443
|
|
|
+# interface: ::0@443
|
|
|
+#
|
|
|
+# Finally, `dnscrypt` config has its own section.
|
|
|
+# dnscrypt:
|
|
|
+# dnscrypt-enable: yes
|
|
|
+# dnscrypt-port: 443
|
|
|
+# dnscrypt-provider: 2.dnscrypt-cert.example.com.
|
|
|
+# dnscrypt-secret-key: /path/unbound-conf/keys1/1.key
|
|
|
+# dnscrypt-secret-key: /path/unbound-conf/keys2/1.key
|
|
|
+# dnscrypt-provider-cert: /path/unbound-conf/keys1/1.cert
|
|
|
+# dnscrypt-provider-cert: /path/unbound-conf/keys2/1.cert
|
|
|
+
|
|
|
+# CacheDB
|
|
|
+# Enable external backend DB as auxiliary cache. Specify the backend name
|
|
|
+# (default is "testframe", which has no use other than for debugging and
|
|
|
+# testing) and backend-specific options. The 'cachedb' module must be
|
|
|
+# included in module-config.
|
|
|
+# cachedb:
|
|
|
+# backend: "testframe"
|
|
|
+# # secret seed string to calculate hashed keys
|
|
|
+# secret-seed: "default"
|
|
|
+# # For "redis" backend:
|
|
|
+# # redis server's IP address or host name
|
|
|
+# redis-server-host: 127.0.0.1
|
|
|
+# # redis server's TCP port
|
|
|
+# redis-server-port: 6379
|
|
|
+# # timeout (in ms) for communication with the redis server
|
|
|
+# redis-timeout: 100
|
Student User