firewall

Manage firewall ports on all (known) Linux operating systems.

GitHub	GitLab	Quality	Downloads	Version

Example Playbook

This example is taken from molecule/default/converge.yml and is tested on each push, pull request and release.

---
- name: Converge
  hosts: all
  become: yes
  gather_facts: yes

  roles:
    - role: robertdebock.firewall

The machine needs to be prepared. In CI this is done using molecule/default/prepare.yml:

---
- name: Prepare
  hosts: all
  gather_facts: no
  become: yes

  roles:
    - role: robertdebock.bootstrap

Also see a full explanation and example on how to use these roles.

Role Variables

The default values for the variables are set in defaults/main.yml:

---
# defaults file for firewall

# If you don't specify a protocol in `firewall_services`, fall back to this.
firewall_default_protocol: tcp

# If you don't specify a rule in `firewall_services`, fall back to this.
firewall_default_rule: allow

# A list of service to allow traffic to.
firewall_services:
  - name: ssh

# A bit more difficult example:
# firewall_services:
#   - name: ssh
#   - name: https
#   - name: 5353
#     protocol: udp
#   - name: 1234
#     protocol: tcp
#   - name: 1337
#     state: absent

# A list of interfaces you would like to add/remove to/from a zone in firewalld.
# firewall_interfaces: []

# examples:
# firewall_interfaces:
#   - interface: eth0
#     zone: trusted
#   - type: bond
#     interface: bond0
#     zone: trusted
#   - interface: ens0
#     zone: trusted
#     state: disabled

Requirements

• pip packages listed in requirements.txt.

• Feature Allow adding a select interface to a selected zone. is only supported on operating systems with firewalld as default firewall software. For details see manpage firewalld.zones(5) "How to set or change a zone for a connection?". This feature will only be usable if the interface is managed by NetworkManager. Suse os-family needs to switch from wicked to NetworkManager, RedHat os-family is using NetworkManger by default. Requires installing additional packages otherwise tasks for the feature will be skipped.

  • known issue: collection community.general is version('3.3.0', '>=') and ansible_distribution == 'Fedora' and ansible_distribution_major_version is version('30', '<=').

    • reason: those versions pulled in new settings see routing-rules in nm-settings.

      workarround: use collection community.general version 3.2.0 but this will introduce different issues. therefore fedora<=30 not supported

      # on centos7,fedora29,rhel7
      CRITICAL Idempotence test failed because of the following tasks:
      *  => ansible-role-firewall : add interface to a zone (networkmanager)
      

Status of used roles

The following roles are used to prepare a system. You can prepare your system in another way.

Requirement	GitHub	GitLab
robertdebock.bootstrap

Context

This role is a part of many compatible roles. Have a look at the documentation of these roles for further information.

Here is an overview of related roles:

Compatibility

This role has been tested on these container images:

container	tags
alpine	all
el	7,8
debian	all
fedora	all
opensuse	all
ubuntu	all

The minimum version of Ansible required is 2.10, tests have been done to:

• The previous version.
• The current version.
• The development version.

If you find issues, please register them in GitHub

License

Apache-2.0

Author Information

Robert de Bock

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