Ensure directed_broadcast is disabled

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Descripción

The directed_broadcast parameter determines whether or not the system allows a directed broadcast to a network gateway. The directed_broadcast parameter will be set to 0, to prevent directed broadcasts being sent network gateways. This would prevent a redirected packet from reaching a remote network. Audit: `no -o directed_broadcast` must report 0.

Cómo se verifica

Método de auditoría: Comando de shell

shell

command -v no >/dev/null 2>&1 || exit 1; out=$(no -o directed_broadcast 2>/dev/null) || exit 1; printf '%s\n' "$out" | sed 's/[[:blank:]]*=[[:blank:]]*/=/'

Salida esperada: directed_broadcast=0

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

no -p -o directed_broadcast=0 (sets the running value and makes it persistent in /etc/tunables/nextboot)

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: aixnetwork
Referencia: CIS IBM AIX 7 Benchmark v1.2.0 - 4.5.4 Ensure directed_broadcast is disabled

Verificar este host

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

shell

tmaegis scan --target aix