UBUNTU24-CIS-Audit/section_3/cis_3.3/cis_3.3.1.yml

---

{{ if .Vars.ubtu24cis_level_1 }}
  {{ if not .Vars.ubtu24cis_is_router }}
    {{ if .Vars.ubtu24cis_rule_3_3_1 }}
kernel-param:
  net.ipv4.ip_forward:
    title: 3.3.1 | Ensure IP forwarding is disabled | IPv4
    value: '0'
    meta:
      server: 1
      workstation: 1
      CIS_ID:
      - 3.3.1
      CISv8:
      - 4.8
      CISv8_IG1: false
      CISv8_IG2: true
      CISv8_IG3: true
      NIST800-53R5:
      - CM-1
      - CM-2
      - CM-6
      - CM-7
      - IA-5
  {{ if .Vars.ubtu24cis_ipv6_required }}
  net.ipv6.conf.all.forwarding:
    title: 3.3.1 | Ensure IP forwarding is disabled | IPv6
    value: '0'
    meta:
      server: 1
      workstation: 1
      CIS_ID:
      - 3.3.1
      CISv8:
      - 4.8
      CISv8_IG1: false
      CISv8_IG2: true
      CISv8_IG3: true
      NIST800-53R5:
      - CM-1
      - CM-2
      - CM-6
      - CM-7
      - IA-5
  {{ end }}
command:
  ipv4_ip_forward:
    title: 3.3.1 | Ensure IP forwarding is disabled | IPv4 config
    exec: grep -E "^\s*net\.ipv4\.ip_forward" /etc/sysctl.conf /etc/sysctl.d/*.conf /usr/lib/sysctl.d/*.conf /run/sysctl.d/*.conf
    exit-status:
      or:
      - 0
      - 1
      - 2
    stdout:
    - '/^.*:net.ipv4.ip_forward\s*=\s*0/'
    meta:
      server: 1
      workstation: 1
      CIS_ID:
      - 3.3.1
      CISv8:
      - 4.8
      CISv8_IG1: false
      CISv8_IG2: true
      CISv8_IG3: true
      NIST800-53R5:
      - CM-1
      - CM-2
      - CM-6
      - CM-7
      - IA-5
  {{ if .Vars.ubtu24cis_ipv6_required }}
  ipv6_ip_forward:
    title: 3.3.1 | Ensure IP forwarding is disabled | IPv6 config
    exec: grep -E "^\s*net\.ipv6\.conf\.all\.forwarding" /etc/sysctl.conf /etc/sysctl.d/*.conf /usr/lib/sysctl.d/*.conf /run/sysctl.d/*.conf
    exit-status:
      or:
      - 0
      - 1
      - 2
    stdout:
    - '/^.*:net.ipv6.conf.all.forwarding\s*=\s*0/'
    meta:
      server: 1
      workstation: 1
      CIS_ID:
      - 3.3.1
      CISv8:
      - 4.8
      CISv8_IG1: false
      CISv8_IG2: true
      CISv8_IG3: true
      NIST800-53R5:
      - CM-1
      - CM-2
      - CM-6
      - CM-7
      - IA-5
      {{ end }}
    {{ end }}
  {{ end }}
{{ end }}