no message

hardening002.yml

+---
+- hosts: APIManager
+  become: true
+  tasks:
+       - import_role:
+            name: hardening
\ No newline at end of file

roles/hardening/tasks/main.yml

+- name: Hardening OS
+  import_tasks: ubuntu.yml
+  when: ansible_os_platform|lower == 'ubuntu'
+  

roles/hardening/tasks/ubuntu.yml

+- name: Hardening Ubuntu OS Disable IPv6
+  sysctl:
+    name: "{{ item.parameter }}"
+    state: present
+    value: "{{ item.value }}"
+  with_items:
+    - { parameter: net.ipv6.conf.all.disable_ipv6, value: 1 }
+    - { parameter: net.ipv6.conf.default.disable_ipv6, value: 1 }
+    - { parameter: net.ipv6.conf.lo.disable_ipv6, value: 1 }
+  
+- name: Hardening Ubuntu OS IP Spoofing protection
+  sysctl:
+    name: "{{ item.parameter }}"
+    state: present
+    value: "{{ item.value }}"
+  with_items:
+    - { parameter: net.ipv4.conf.all.rp_filter, value: 1 }
+    - { parameter: net.ipv4.conf.default.rp_filter, value: 1 }
+
+- name: Hardening Ubuntu OS Block SYN attacks
+  sysctl:
+    name: "{{ item.parameter }}"
+    state: present
+    value: "{{ item.value }}"
+  with_items:
+    - { parameter: net.ipv4.tcp_syncookies, value: 1 }
+    - { parameter: net.ipv4.tcp_max_syn_backlog, value: 2048 }
+    - { parameter: net.ipv4.tcp_synack_retries, value: 2 }
+    - { parameter: net.ipv4.tcp_syn_retries, value: 5 }
+    
+- name: Hardening Ubuntu OS Ignore send redirects
+  sysctl:
+    name: "{{ item.parameter }}"
+    state: present
+    value: "{{ item.value }}"
+  with_items:
+    - { parameter: net.ipv4.conf.all.send_redirects, value: 0 }
+    - { parameter: net.ipv4.conf.default.send_redirects, value: 0 }
+    
+- name: Hardening Ubuntu OS Log Martians
+  sysctl:
+    name: "{{ item.parameter }}"
+    state: present
+    value: "{{ item.value }}"
+  with_items:
+    - { parameter: net.ipv4.conf.all.log_martians, value: 1 }
+    - { parameter: net.ipv4.icmp_ignore_bogus_error_responses, value: 1 }
+