Pi-OS Bullseye plus Pi-hole and Unbound

# @laptop

cd ~

wget https://downloads.raspberrypi.org/raspios_lite_armhf/images/raspios_lite_armhf-2021-11-08/2021-10-30-raspios-bullseye-armhf-lite.zip -O raspbian_lite_latest.zip

zipinfo raspbian_lite_latest.zip

unzip raspbian_lite_latest.zip

lsblk

umount /media/dehakkelaar/rootfs /media/dehakkelaar/boot

sudo dd status=progress bs=4M conv=fsync if=2021-10-30-raspios-bullseye-armhf-lite.img of=/dev/sdb

sync

rm 2021-10-30-raspios-bullseye-armhf-lite.img

lsblk

sudo mount /dev/sdb1 /mnt/tmp

sudo touch /mnt/ssh

sudo umount /mnt

sudo mount /dev/sdb2 /mnt

sudo nano /mnt/tmp/etc/dhcpcd.conf
"
[..]
interface eth0
  static ip_address=10.0.0.4/24
  static routers=10.0.0.1
  static domain_name=home.dehakkelaar.nl
  static domain_name_servers=10.0.0.1
"

sync

sudo umount /mnt

ping 10.0.0.4

ssh pi@10.0.0.4  # pi / raspberry

# @Raspberry Pi

passwd

sudo dpkg-reconfigure tzdata

sudo hostnamectl set-hostname ph5b

sudo sed -i 's/^127.0.1.1/#127.0.1.1/' /etc/hosts

sudo tee -a /etc/hosts <<< "127.0.1.1      $(hostname).home.dehakkelaar.nl  $(hostname)"

sudo systemctl disable alsa-restore alsa-state avahi-daemon.service wpa_supplicant

sudo systemctl stop alsa-restore alsa-state avahi-daemon.service wpa_supplicant

ssh-keygen

nano ~/.ssh/authorized_keys2

tee ~/.bash_aliases <<< $"alias ll='ls -al --color'"

. ~/.bash_aliases

sudo apt update && sudo apt upgrade

sudo reboot

ping 10.0.0.4

ssh pi@10.0.0.4

timedatectl

hostname

hostname -f

dnsdomainname

hostname -i

hostname -I

sudo apt install apt-file dnsmasq-base mc nmap screen tcpdump tree whois

sudo apt-file update

curl -sSL https://install.pi-hole.net | bash

pihole -a -p

sudo tee /etc/dnsmasq.d/10-dhcp-dns.conf <<< $'dhcp-option=option:dns-server,0.0.0.0,0.0.0.0,0.0.0.0'

pihole-FTL --test

sudo service pihole-FTL reload

pihole status

host ph5b ph5b

host pi.hole $(hostname -i)

host pi.hole $(hostname -I)

host flurry.com $(hostname -I)

host pi-hole.net $(hostname -I)

curl -I http://$(hostname -i)/admin/

nc localhost 4711 <<< $'>stats >quit'

sudo apt install unbound

sudo systemctl disable unbound-resolvconf

sudo sed -i 's\^unbound_conf=\#unbound_conf=\g' /etc/resolvconf.conf

sudo rm /etc/unbound/unbound.conf.d/resolvconf_resolvers.conf

sudo service dhcpcd restart

sudo nano /etc/unbound/unbound.conf.d/pi-hole.conf
"
server:
    # If no logfile is specified, syslog is used
    # logfile: "/var/log/unbound/unbound.log"
    verbosity: 0

    interface: 127.0.0.1
    port: 5335
    do-ip4: yes
    do-udp: yes
    do-tcp: yes

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

    # You want to leave this to no unless you have *native* IPv6. With 6to4 and
    # Terredo tunnels your web browser should favor IPv4 for the same reasons
    prefer-ip6: no

    # Use this only when you downloaded the list of primary root servers!
    # If you use the default dns-root-data package, unbound will find it automatically
    #root-hints: "/var/lib/unbound/root.hints"

    # Trust glue only if it is within the server's 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: 192.168.0.0/16
    private-address: 169.254.0.0/16
    private-address: 172.16.0.0/12
    private-address: 10.0.0.0/8
    private-address: fd00::/8
    private-address: fe80::/10
"

sudo tee /etc/unbound/unbound.conf.d/remote-control.conf <<< $'remote-control:\n    control-enable: yes'

sudo service unbound restart

sudo reboot

cat /etc/resolv.conf

dig +short @localhost -p 53 chaos txt version.bind

dig +short @localhost -p 53 chaos txt servers.bind

dig +short @localhost -p 5335 chaos txt version.bind

dig +noall +comments +answer @localhost -p 5335 sigfail.verteiltesysteme.net

dig +noall +comments +answer @localhost -p 5335 sigok.verteiltesysteme.net

dig +short @localhost -p 5335 in a pi-hole.net

sudo unbound-control list_forwards

sudo unbound-control lookup pi-hole.net

# http://10.0.0.4/admin/settings.php?tab=dns
# Custom 1 (IPv4): 127.0.0.1#5335

host pi-hole.net $(hostname -I)