10.2. Forwarding incoming traffic in firewalld from one local port to a different local port by using the firewall RHEL system role

Procedure

1. Create a playbook file, for example, ~/playbook.yml, with the following content:

   ---
   - name: Configure firewalld
     hosts: managed-node-01.example.com
     tasks:
       - name: Forward incoming traffic on port 8080 to 443
         ansible.builtin.include_role:
           name: redhat.rhel_system_roles.firewall
         vars:
           firewall:
             - forward_port: 8080/tcp;443;
               state: enabled
               runtime: true
               permanent: true

   The settings specified in the example playbook include the following:

   forward_port: 8080/tcp;443

   Traffic coming to the local port 8080 using the TCP protocol is forwarded to port 443.

   runtime: true

   Enables changes in the runtime configuration. The default is set to true.

   For details about all variables used in the playbook, see the /usr/share/ansible/roles/rhel-system-roles.firewall/README.md file on the control node.

2. Validate the playbook syntax:

   $ ansible-playbook --syntax-check ~/playbook.yml

   Note that this command only validates the syntax and does not protect against a wrong but valid configuration.

3. Run the playbook:

   $ ansible-playbook ~/playbook.yml