BIND DNS: Disable Dynamic Updates

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To disable dynamic updates in BIND DNS, follow these steps:

  1. Open the named.conf file in a text editor. The location of the file may vary depending on your system configuration, but it is typically located in /etc/named.conf.
  2. Find the section of the named.conf file that contains the configuration for the zone that you want to disable dynamic updates for. This section will typically look like this:
zone "example.com" {
type master;
file "/etc/named/example.com.zone";
allow-update { key "example.com.key"; };
};
  1. Remove the “allow-update” statement from the zone configuration, or comment it out by placing a “#” character at the beginning of the line. This statement is what allows dynamic updates, so removing or commenting it out will disable dynamic updates for the zone.
zone "example.com" {
type master;
file "/etc/named/example.com.zone";
# allow-update { key "example.com.key"; };
};
  1. Save the named.conf file and exit the text editor.
  2. Restart the BIND DNS service to apply the changes:
sudo systemctl restart named

With these steps, dynamic updates should now be disabled for the specified zone in BIND DNS.

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