Ensure DNS Server is not enabled

MediaNivel 1Automatizadaros

Descripción

The Domain Name System (DNS) is a hierarchical naming system that maps names to IP addresses for computers, services and other resources connected to a network. The audit requires the DNS server unit(s) bind9 not to be enabled or active (systemctl). Host-level control from the CIS ROS Melodic benchmark (Ubuntu 18.04 robot hosts); run as root.

Cómo se verifica

Método de auditoría: Comando de shell

shell

command -v systemctl >/dev/null 2>&1 || exit 1
bad=0
for u in bind9; do
  s=$(systemctl is-enabled "$u" 2>/dev/null)
  case "$s" in enabled|enabled-runtime|alias|indirect) echo "$u is $s"; bad=1 ;; esac
  systemctl is-active --quiet "$u" 2>/dev/null && { echo "$u is active"; bad=1; }
done
[ "$bad" -eq 0 ] && echo compliant

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Run the following commands to disable DNS server: # systemctl --now disable bind9

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: rosros1melodicservices
Referencia: CIS ROS Melodic Benchmark v1.0.0 - 2.2.8 Ensure DNS Server is not enabled

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target ros