mirror of
https://github.com/sujiba/pihole-unbound-hyperlocal.git
synced 2025-07-12 06:25:44 +02:00
228 lines
8.5 KiB
Text
228 lines
8.5 KiB
Text
server:
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###########################################################################
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# BASIC SETTINGS
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###########################################################################
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# Listen to for queries from clients and answer from this network interface
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# and port.
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interface: 127.0.0.1
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port: 5335
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do-ip4: yes
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do-udp: yes
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do-tcp: yes
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# Maybe set to yes if you have IPv6 connectivity
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do-ip6: no
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# and for *native* IPv6
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prefer-ip6: no
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# where to find root server data
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root-hints: /var/lib/unbound/root.hints
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# Reduce EDNS reassembly buffer size.
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# Suggested by the unbound man page to reduce fragmentation reassembly problems
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edns-buffer-size: 1472
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# Rotates RRSet order in response (the pseudo-random number is taken from
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# the query ID, for speed and thread safety).
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rrset-roundrobin: yes
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# Drop privileges after binding the port.
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username: "unbound"
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###########################################################################
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# LOGGING
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###########################################################################
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# If no logfile is specified, syslog is used
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#logfile: "/var/log/unbound/unbound.log"
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log-time-ascii: yes
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# The verbosity number,
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# level 0 means no verbosity, only errors.
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# level 1 gives operational information.
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verbosity: 1
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# Do not print log lines to inform about local zone actions
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log-local-actions: no
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# Do not print one line per query to the log
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log-queries: no
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# Do not print one line per reply to the log
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log-replies: no
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# Do not print log lines that say why queries return SERVFAIL to clients
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log-servfail: no
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# Further limit logging
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logfile: /dev/null
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###########################################################################
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# PRIVACY SETTINGS
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###########################################################################
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# RFC 8198. Use the DNSSEC NSEC chain to synthesize NXDO-MAIN and other
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# denials, using information from previous NXDO-MAINs answers. In other
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# words, use cached NSEC records to generate negative answers within a
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# range and positive answers from wildcards. This increases performance,
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# decreases latency and resource utilization on both authoritative and
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# recursive servers, and increases privacy. Also, it may help increase
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# resilience to certain DoS attacks in some circumstances.
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aggressive-nsec: yes
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# Extra delay for timeouted UDP ports before they are closed, in msec.
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# This prevents very delayed answer packets from the upstream (recursive)
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# servers from bouncing against closed ports and setting off all sort of
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# close-port counters, with eg. 1500 msec. When timeouts happen you need
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# extra sockets, it checks the ID and remote IP of packets, and unwanted
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# packets are added to the unwanted packet counter.
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delay-close: 10000
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# Prevent the unbound server from forking into the background as a daemon
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do-daemonize: no
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# Add localhost to the do-not-query-address list.
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do-not-query-localhost: no
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# Number of bytes size of the aggressive negative cache.
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neg-cache-size: 4M
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# Send minimum amount of information to upstream servers to enhance
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# privacy (best privacy).
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qname-minimisation: yes
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###########################################################################
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# SECURITY SETTINGS
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###########################################################################
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# Only give access to recursion clients from LAN IPs
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access-control: 127.0.0.1/32 allow
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access-control: 192.168.0.0/16 allow
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access-control: 172.16.0.0/12 allow
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access-control: 10.0.0.0/8 allow
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# Enable chroot (i.e, change apparent root directory for the current
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# running process and its children)
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#chroot: "/etc/unbound"
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# Deny queries of type ANY with an empty response.
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deny-any: yes
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# Harden against algorithm downgrade when multiple algorithms are
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# advertised in the DS record.
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harden-algo-downgrade: yes
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# RFC 8020. returns nxdomain to queries for a name below another name that
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# is already known to be nxdomain.
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harden-below-nxdomain: yes
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# Require DNSSEC data for trust-anchored zones, if such data is absent, the
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# zone becomes bogus. If turned off you run the risk of a downgrade attack
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# that disables security for a zone.
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harden-dnssec-stripped: yes
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# Trust glue only if it is within the server's authority
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harden-glue: yes
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# Ignore very large queries.
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harden-large-queries: yes
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# Perform additional queries for infrastructure data to harden the referral
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# path. Validates the replies if trust anchors are configured and the zones
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# are signed. This enforces DNSSEC validation on nameserver NS sets and the
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# nameserver addresses that are encountered on the referral path to the
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# answer. Experimental option.
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harden-referral-path: no
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# Ignore very small EDNS buffer sizes from queries.
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harden-short-bufsize: yes
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# Refuse id.server and hostname.bind queries
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hide-identity: yes
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# Refuse version.server and version.bind queries
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hide-version: yes
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# Set the HTTP User-Agent header for outgoing HTTP requests. If
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# set to "", the default, then the package name and version are
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# used.
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#http-user-agent: "DNS"
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# Report this identity rather than the hostname of the server.
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identity: "DNS"
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# These private network addresses are not allowed to be returned for public
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# internet names. Any occurrence of such addresses are removed from DNS
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# answers. Additionally, the DNSSEC validator may mark the answers bogus.
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# This protects against DNS Rebinding
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private-address: 10.0.0.0/8
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private-address: 172.16.0.0/12
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private-address: 169.254.0.0/16
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private-address: 192.168.0.0/16
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private-address: fd00::/8
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private-address: fe80::/10
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# Enable ratelimiting of queries (per second) sent to nameserver for
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# performing recursion. More queries are turned away with an error
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# (servfail). This stops recursive floods (e.g., random query names), but
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# not spoofed reflection floods. Cached responses are not rate limited by
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# this setting. Experimental option.
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ratelimit: 1000
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# Set the total number of unwanted replies to eep track of in every thread.
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# When it reaches the threshold, a defensive action of clearing the rrset
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# and message caches is taken, hopefully flushing away any poison.
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# Unbound suggests a value of 10 million.
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unwanted-reply-threshold: 10000
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# Don't use Capitalization randomization as it known to cause DNSSEC issues sometimes
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# see https://discourse.pi-hole.net/t/unbound-stubby-or-dnscrypt-proxy/9378 for further details
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# !! Änderung gegenüber Pi-hole. Wenn es Fehler gibt, hier no statt yes probieren. !!
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use-caps-for-id: yes
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# Help protect users that rely on this validator for authentication from
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# potentially bad data in the additional section. Instruct the validator to
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# remove data from the additional section of secure messages that are not
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# signed properly. Messages that are insecure, bogus, indeterminate or
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# unchecked are not affected.
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val-clean-additional: yes
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###########################################################################
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# PERFORMANCE SETTINGS
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###########################################################################
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# https://nlnetlabs.nl/documentation/unbound/howto-optimise/
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# https://nlnetlabs.nl/news/2019/Feb/05/unbound-1.9.0-released/
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# Perform prefetching of close to expired message cache entries
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# This only applies to domains that have been frequently queried
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prefetch: yes
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# fetch DS records earlier (DNSSEC): more cpu usage, less latency
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prefetch-key: yes
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# One thread should be sufficient, can be increased on beefy machines
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num-threads: 1
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# increase cache size to utilize more RAM, rrset=msg*2
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msg-cache-size: 64m
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rrset-cache-size: 128m
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remote-control:
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control-enable: no
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# get data for all TLDs by IXFR (or AXFR) from root servers
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# these are the only servers that answer an IXFR query
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auth-zone:
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name: "."
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primary: 199.9.14.201 # b.root-servers.net
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primary: 192.33.4.12 # c.root-servers.net
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primary: 192.112.36.4 # g.root-servers.net
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primary: 2001:500:200::b # b.root-servers.net
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primary: 2001:500:2::c # c.root-servers.net
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primary: 2001:500:12::d0d # g.root-servers.net
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fallback-enabled: yes
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for-downstream: no
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for-upstream: yes
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zonefile: /var/lib/unbound/root.zone
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