Pi-hole mit rekursivem Nameserver

Written by  on Juli 12, 2019 

Wer sich Sorgen um die Privatsphäre macht, sollte Pi-hole direkt mit eigenem, rekursivem Nameserver betreiben, statt die DNS Daten an Google, Cloudflare oder seinem Internetprovider zu spenden.
Beschrieben wird das etwa unter Setting up Pi-hole as a recursive DNS server solution
Nochmal von mir getestet auf “Raspbian GNU/Linux 9 (stretch)”

apt-get install unbound
# root hints herunterladen, sollte man ab und zu aktualisieren
wget -O root.hints https://www.internic.net/domain/named.root
sudo mv root.hints /var/lib/unbound/


    # If no logfile is specified, syslog is used
    # logfile: "/var/log/unbound/unbound.log"
    verbosity: 0

    port: 5353
    do-ip4: yes
    do-udp: yes
    do-tcp: yes

    # May be set to yes if you have IPv6 connectivity
    do-ip6: no

    # Use this only when you downloaded the list of primary root servers!
    root-hints: "/var/lib/unbound/root.hints"

    # Trust glue only if it is within the servers authority
    harden-glue: yes

    # Require DNSSEC data for trust-anchored zones, if such data is absent, the zone becomes BOGUS
    harden-dnssec-stripped: yes

    # Don't use Capitalization randomization as it known to cause DNSSEC issues sometimes
    # see https://discourse.pi-hole.net/t/unbound-stubby-or-dnscrypt-proxy/9378 for further details
    use-caps-for-id: no

    # Reduce EDNS reassembly buffer size.
    # Suggested by the unbound man page to reduce fragmentation reassembly problems
    edns-buffer-size: 1472

    # Perform prefetching of close to expired message cache entries
    # This only applies to domains that have been frequently queried
    prefetch: yes

    # One thread should be sufficient, can be increased on beefy machines. In reality for most users running on small networks or on a single machine it should be unnecessary to seek performance enhancement by increasing num-threads above 1.
    num-threads: 1

    # Ensure kernel buffer is large enough to not lose messages in traffic spikes
    so-rcvbuf: 1m

    # Ensure privacy of local IP ranges
    private-address: fd00::/8
    private-address: fe80::/10
service unbound start
# Dienst aktivieren
systemctl enable unbound
dig pi-hole.net @ -p 5353

DNS Sec testen

dig sigfail.verteiltesysteme.net @ -p 5353
dig sigok.verteiltesysteme.net @ -p 5353

Im Pi-hole Admin als DNS Server festlegen: “”

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