Enable MAC spoof filtering

MoyenneNiveau 1Automatiséeopenshift-virt

Description

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.

Méthode de vérification

Méthode d'audit: Commande 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

Sortie attendue: compliant

Méthode de correction

Méthode de correction: Recommandation ou correctif d'infrastructure

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

Propriétés

Systèmes d'exploitation: Tous
Étiquettes: openshift-virtnetworkmac-spoofing
Référence: CIS Red Hat OpenShift Virtual Machine Extension Benchmark v1.0.0 - 4.2 Enable MAC spoof filtering

Vérifier cet hôte

Exécutez cette commande sur une machine que vous êtes autorisé à auditer. L'analyse est en lecture seule.

shell

tmaegis scan --target openshift-virt