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How does the Ansible firewalld module work?

Answer»

Ansible firewalld is used to manage firewall rules on host machines. This works just as Linux firewalld daemon for allowing/blocking services from the port. It is split into two major concepts

  • Zones: This is the LOCATION for which we can CONTROL which services are exposed to or a location to which one the local network interface is connected.
  • Services: These are typically a series of port/protocol combinations (sockets) that your host may be listening on, which can then be placed in one or more zones

Few examples of setting up firewalld are

- name: permit traffic in default ZONE for HTTPS SERVICE ansible.posix.firewalld: service: https permanent: yes state: enabled - name: do not permit traffic in default zone on port 8081/tcp ansible.posix.firewalld: port: 8081/tcp permanent: yes state: disabled


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