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k3s/scripts/hardened/hardened-k3s-netpol.yaml

121 lines
2.4 KiB

---
# Allow all traffic within the kube-system namespace; block all other access
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
name: intra-namespace
namespace: kube-system
spec:
podSelector: {}
ingress:
- from:
- namespaceSelector:
matchLabels:
name: kube-system
policyTypes:
- Ingress
---
# Allow all traffic within the default namespace; block all other access
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
name: intra-namespace
namespace: default
spec:
podSelector: {}
ingress:
- from:
- namespaceSelector:
matchLabels:
name: default
policyTypes:
- Ingress
---
# Allow traffic within the kube-public namespace; block all other access
kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
name: intra-namespace
namespace: kube-public
spec:
podSelector: {}
ingress:
- from:
- namespaceSelector:
matchLabels:
name: kube-public
policyTypes:
- Ingress
---
# Allow all access to metrics-server
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-all-metrics-server
namespace: kube-system
spec:
podSelector:
matchLabels:
k8s-app: metrics-server
ingress:
- {}
policyTypes:
- Ingress
---
# Allow all access to coredns DNS ports
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: default-network-dns-policy
namespace: kube-system
spec:
ingress:
- ports:
- port: 53
protocol: TCP
- port: 53
protocol: UDP
podSelector:
matchLabels:
k8s-app: kube-dns
policyTypes:
- Ingress
---
# Allow all access to the the servicelb traefik HTTP/HTTPS ports
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-all-svclb-traefik
namespace: kube-system
spec:
podSelector:
matchLabels:
svccontroller.k3s.cattle.io/svcname: traefik
ingress:
- ports:
- port: 80
protocol: TCP
- port: 443
protocol: TCP
policyTypes:
- Ingress
---
# Allow all access to traefik HTTP/HTTPS ports
apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
name: allow-all-traefik
namespace: kube-system
spec:
podSelector:
matchLabels:
app.kubernetes.io/name: traefik
ingress:
- ports:
- port: 8000
protocol: TCP
- port: 8443
protocol: TCP
policyTypes:
- Ingress