As you will have already guessed, this module, like the other facts modules, is used to gather facts on the firewall configuration of all of the hosts within our cluster:

- name: Get facts on all cluster hosts
  vmware_host_firewall_facts:
    hostname: "{{ vsphere_host }}"
    username: "{{ vsphere_username }}"
    password: "{{ vsphere_password }}"
    validate_certs: "no"
    cluster_name: "my_cluster"

It can also gather for just a single host:

- name: Get facts on a single host
  vmware_host_firewall_facts:
    hostname: "{{ vsphere_host }}"
    username: "{{ vsphere_username }}"
    password: "{{ vsphere_password }}"
    validate_certs: "no"
    esxi_hostname: "{{ exsi_host }}"