Secure Bind ansible role

Ansible role to setup Bind/Named DNS server with sane secure default. Including

• Secure template from Team Cymru template (http://www.cymru.com/Documents/secure-bind-template.html). Please note than separated internal/external views are not implemented currently.
• DNSSEC for authentication,
• RPZ to whitelist/blacklist entries
• Malware domains list blackholed
• Eventual integration with MISP RPZ export
• Authoritative DNS (mostly for internal zones) Mostly as cache/forwarder but could be other roles.

For internal domains, be aware:

• Reserved Top Level DNS Names, RFC2606: .test, .example, .invalid, .localhost, example.com, example.net, example.org; Private DNS Namespaces, RFC6762: .intranet, .internal, .private, .corp, .home, .lan
• Approved Resolutions | Special Meeting of the ICANN Board | 29 July 2024: Reserving .INTERNAL for Private-Use Applications
• Active Directory: Best Practices for Internal Domain and Network Names: "Microsoft strongly suggests to work with subdomains, within a publicly registered TLD domain", Naming conventions in Active Directory for computers, domains, sites, and OUs

Requirements & Dependencies

Ansible

It was tested on the following versions:

• 2.10-17

Python module netaddr must be present to create reverse zones.

Operating systems

Tested on Ubuntu 24.04 (bind 9.18.28), 22.04 (9.18.1) and centos/rockylinux 9 (9.16.23).

Example Playbook

Just include this role in your list. For example

- host: all
  roles:
    - juju4.bind

Variables

Nothing specific for now.

Continuous integration

This role has a travis basic test (for github), more advanced with kitchen and also a Vagrantfile (test/vagrant).

Once you ensured all necessary roles are present, You can test with:

$ cd /path/to/roles/juju4.bind
$ kitchen verify
$ kitchen login

or

$ cd /path/to/roles/juju4.bind/test/vagrant
$ vagrant up
$ vagrant ssh

or

$ pip install molecule docker
$ molecule test
$ MOLECULE_DISTRO=ubuntu:24.04 molecule test --destroy=never

Troubleshooting & Known issues

License

BSD 2-clause

Thanks

• To bertvv for his bind ansible role for authoritative DNS with nice jinja2 filters to handle reverse lookup https://github.com/bertvv/ansible-role-bind In the end, there is an existing filter to do that since 1.9 ipaddr('revdns') https://docs.ansible.com/ansible/playbooks_filters_ipaddr.html One limitation, it's for not fit for zone and as such IPv6 is untested/unsupported.