Enable MAC spoof filtering

MediaNivel 1Automatizadaopenshift-virt

Descripción

Mac spoof filtering is a feature that helps prevent man - in - the - middle attacks by verifying the authenticity of MAC addresses in network packets. By checking the MAC address of incoming packets, mac - spoof filtering can help ensure that only authorized devices are able to communicate with a particular device or network. Audit: Passes when every SR-IOV network has spoofChk "on" and every bridge-type NetworkAttachmentDefinition sets macspoofchk to true (needs jq). OVN Kubernetes localnet filters MAC spoofing by default. Requires oc logged in to the cluster with read access.

Cómo se verifica

Método de auditoría: Comando de shell

shell

command -v oc >/dev/null 2>&1 || exit 1; command -v jq >/dev/null 2>&1 || exit 1; s=$(oc get sriovnetwork -A -o json 2>/dev/null || echo '{"items":[]}'); n=$(oc get network-attachment-definitions -A -o json) || exit 1; b1=$(printf '%s' "$s" | jq '[.items[]|select(.spec.spoofChk != "on")]|length'); b2=$(printf '%s' "$n" | jq '[.items[]|(.spec.config|fromjson? // {})|select(.type == "bridge")|select(.macspoofchk != true)]|length'); [ "$b1" = 0 ] && [ "$b2" = 0 ] && echo compliant || echo noncompliant

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Enable MAC-spoof filtering per the deployed networking provider instructions. Instructions for Bridge CNI and SR-IOV CNI.

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: openshift-virtnetworkmac-spoofing
Referencia: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 4.2 Enable MAC spoof filtering

Verificar este host

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

shell

tmaegis scan --target openshift-virt