Merge pull request #422 from ansible-lockdown/issue_416_fix

Issue 416 fix

defaults/main.yml

@@ -802,6 +802,8 @@ rhel9cis_tftp_client: false
 ## Control 3.1.1 - Ensure IPv6 status is identified
 # This variable governs whether ipv6 is enabled or disabled.
 rhel9cis_ipv6_required: true
+# rhel9cis_ipv6_disable defines the method of disabling IPv6, sysctl vs kernel
+rhel9cis_ipv6_disable_method: "sysctl"
 
 ## Control 3.1.2 - Ensure wireless interfaces are disabled
 # if wireless adapter found allow network manager to be installed

tasks/section_3/cis_3.1.x.yml

@@ -16,15 +16,30 @@
     - rule_3.1.1
     - NIST800-53R5_CM-7
   block:
-    - name: "3.1.1 | PATCH | Ensure IPv6 status is identified | refresh"
+    - name: "3.1.1 | PATCH | Ensure IPv6 status is identified | Set vars for sysctl template"
+      when: "'sysctl' in rhel9cis_ipv6_disable_method"
       ansible.builtin.set_fact:
         rhel9cis_sysctl_update: true
         rhel9cis_flush_ipv6_route: true
 
-    - name: "3.1.1 | PATCH | Ensure IPv6 status is identified | disable"
+    - name: "3.1.1 | AUDIT | Ensure IPv6 status is identified | Message out implementation info"
+      when: "'sysctl' in rhel9cis_ipv6_disable_method"
       ansible.builtin.debug:
         msg: "Control being set via Handler 'update sysctl' which writes to /etc/sysctl.d/60-disable_ipv6.conf"
 
+    - name: "3.1.1 | AUDIT | Ensure IPv6 status is identified | Find IPv6 status"
+      when: "'kernel' in rhel9cis_ipv6_disable_method"
+      ansible.builtin.command: grubby --info=ALL
+      changed_when: false
+      failed_when: false
+      register: discovered_rhel9cis_3_1_1_ipv6_status
+
+    - name: "3.1.1 | PATCH | Ensure IPv6 status is identified | Disable IPV6 via Kernel"
+      when:
+        - "'kernel' in rhel9cis_ipv6_disable_method"
+        - "'ipv6.disable=1' not in discovered_rhel9cis_3_1_1_ipv6_status.stdout"
+      ansible.builtin.shell: grubby --update-kernel=ALL --args="ipv6.disable=1"
+
 - name: "3.1.2 | PATCH | Ensure wireless interfaces are disabled"
   when:
     - rhel9cis_rule_3_1_2

templates/etc/sysctl.d/60-disable_ipv6.conf.j2

@@ -4,4 +4,7 @@
 {% if rhel9cis_rule_3_1_1 and not rhel9cis_ipv6_required %}
 net.ipv6.conf.all.disable_ipv6 = 1
 net.ipv6.conf.default.disable_ipv6 = 1
+{% for interface in ansible_interfaces %}
+net.ipv6.conf.{{ interface }}.disable_ipv6 = 1
+{% endfor %}
 {% endif %}