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#
# /usr/local/etc/nsd/nsd.conf
# See nsd.conf(5)
#
# References
# ----------
# * NSD DNS Server Tutorial
# https://calomel.org/nsd_dns.html
# * Host Your own DNS, without Sacrificing Reliability
# https://blog.tom-fitzhenry.me.uk/2012/12/host-your-own-dns-without-sacrificing-reliability.html
# * Stealth (a.k.a. DMZ or Hidden Master) Name Server
# http://www.zytrax.com/books/dns/ch4/#stealth
# * Free Secondary/slave DNS services
# http://www.frankb.us/dns/
# * Free Secondary (slave) DNS
# https://bornoe.org/blog/2015/10/free-secondary-slave-dns/
#
#
# Aaron LI
#
# NOTE:
# Authoritative master server in *stealth* mode, i.e., hidden master.
#
# Due to the importance of the DNS, many registrars require that at least 2
# name servers are provided from different machines or even from different
# countries. Maybe you could create another glue record with the same IP
# address to fool the registrar, but some registrars may further check the
# IP addresses. Nevertheless, it is highly unrecommended to host your own
# DNS on single machine, and secondary/slave DNS services should be used.
# One can even configure a hidden master DNS with several slaves, which
# can greatly reduce the traffic to the (small) master DNS, since only the
# configured slaves have access to it, and the better security (avoid DDoS).
server:
# Specify the interfaces to bind.
# Default are the wildcard interfaces 0.0.0.0 and ::0).
ip-address: {{ network.ipv4.address }}
ip-address: {{ network.ipv6.address }}
# Use the reuseport socket option for performance.
# Default: no.
reuseport: yes
# Listen on IPv4 connections
do-ip4: yes
# Listen on IPv6 connections
do-ip6: yes
# The file used to store the compiled zone information.
# If set to "" then no disk-database is used, less memory used
# but zone updates are not (immediately) spooled to disk.
#database: "/var/db/nsd/nsd.db"
database: ""
# Don't answer VERSION.BIND and VERSION.SERVER CHAOS class queries
hide-version: yes
# Identify the server (CH TXT ID.SERVER entry)
identity: ""
# Statistics are produced every number of seconds.
# NOTE: requires BIND 8 statistics, which is disabled in the package
#statistics: 7200
# Verbosity level (0, 1, 2).
# Level 0 will print warnings and errors, and other events that are
# important to keep NSD running.
verbosity: 1
# Log messages to file. Default to stderr and syslog (with
# facility LOG_DAEMON). stderr disappears when daemon goes to bg.
#logfile: "/var/log/nsd.log"
# Remote control config section.
#
remote-control:
# Enable remote control with nsd-control(8) here.
control-enable: yes
# Interfaces listened to for control. Default is on localhost.
control-interface: 127.0.0.1
control-interface: ::1
# Server and nsd-control key and certificate files for remote control.
# Set up the keys and certificates with nsd-control-setup.
server-key-file: "/usr/local/etc/nsd/nsd_server.key"
server-cert-file: "/usr/local/etc/nsd/nsd_server.pem"
control-key-file: "/usr/local/etc/nsd/nsd_control.key"
control-cert-file: "/usr/local/etc/nsd/nsd_control.pem"
# Patterns have zone configuration that are shared by one or more zones.
#
pattern:
# Name by which the pattern is referred to
name: "stealth_zones"
# The zonefile for the zones that use this pattern.
# If relative then from the zonesdir (inside the chroot).
# the name is processed: %s - zone name (as appears in zone:name).
zonefile: "zones/%s.zone"
# Use "%s" to use the name of the zone to track its statistics from
# nsd-control stats and stats_noreset.
zonestats: "%s"
# Notify these slaves when the master zone changes, and allow them
# to transfer zones.
{% for server in nameservers %}
notify: {{ server.xfr_ip }} NOKEY # {{ server.name }}
provide-xfr: {{ server.xfr_ip }} NOKEY # {{ server.name }}
{% endfor %}
# Fixed zone entries. Here you can config zones that cannot be deleted.
# Zones that are dynamically added and deleted are put in the zonelist file.
#
{% for zf in zonefiles %}
zone:
name: "{{ zf | basename | regex_replace('\.zone\.j2', '') }}"
include-pattern: "stealth_zones"
{% endfor %}
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