Host must block network traffic by default

MediaNivel 1Automatizadavmware

Descripción

By default, the host is configured to block all incoming and outgoing network traffic, except for the traffic pertaining to services enabled in the host security profile. This configuration is pivotal in reducing the attack surface and averting unauthorized access to the host. The audit runs esxcli network firewall get and requires "Enabled: true" and "Default Action: DROP"; review enabled rulesets as well. Runs in the ESXi Shell (busybox sh) as root.

Cómo se verifica

Método de auditoría: Comando de shell

shell

out=$(esxcli network firewall get 2>/dev/null) || exit 1
a=$(printf '%s\n' "$out" | sed -n 's/^ *Default Action: *//p' | head -n 1)
e=$(printf '%s\n' "$out" | sed -n 's/^ *Enabled: *//p' | head -n 1)
[ "$a" = DROP ] && [ "$e" = true ] && echo compliant || echo "firewall enabled=$e default action=$a"

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

1. Enable the ESXi firewall if disabled and disable unnecessary rulesets. 2. Use: esxcli network firewall set --enabled true 3. Configure only the required rulesets for documented services.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: vmwareesxinetwork
Referencia: CIS VMware ESXi 9.0 Benchmark v1.0.0 - 5.2 Host must block network traffic by default

Verificar este host

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

shell

tmaegis scan --target vmware