diff --git a/charts/gerrit-replica/templates/netpol.yaml b/charts/gerrit-replica/templates/netpol.yaml
new file mode 100644
index 0000000..72a2bbd
--- /dev/null
+++ b/charts/gerrit-replica/templates/netpol.yaml
@@ -0,0 +1,248 @@
+{{ if .Values.networkPolicies.enabled -}}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: {{ .Release.Name }}-default-deny-all
+  labels:
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+  policyTypes:
+  - Ingress
+  - Egress
+  ingress: []
+  egress: []
+---
+{{ if .Values.networkPolicies.dnsPorts -}}
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ .Release.Name }}-allow-dns-access
+  labels:
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+  policyTypes:
+  - Egress
+  egress:
+  - ports:
+    {{ range .Values.networkPolicies.dnsPorts -}}
+    - port: {{ . }}
+      protocol: UDP
+    - port: {{ . }}
+      protocol: TCP
+    {{ end }}
+{{- end }}
+---
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: gerrit-replica-allow-external
+  labels:
+    app.kubernetes.io/component: gerrit-replica
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+      app.kubernetes.io/component: gerrit-replica
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  ingress:
+  - ports:
+    - port: 8080
+    from: []
+---
+{{ if or .Values.gitBackend.networkPolicy.ingress -}}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: git-backend-custom-ingress-policies
+  labels:
+    app.kubernetes.io/component: git-backend
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  policyTypes:
+  - Ingress
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+      app.kubernetes.io/component: git-backend
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  ingress:
+{{ toYaml .Values.gitBackend.networkPolicy.ingress | indent 2 }}
+{{- end }}
+---
+{{ if or .Values.gitBackend.networkPolicy.egress -}}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: git-backend-custom-egress-policies
+  labels:
+    app.kubernetes.io/component: git-backend
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  policyTypes:
+  - Egress
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+      app.kubernetes.io/component: git-backend
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  egress:
+{{ toYaml .Values.gitBackend.networkPolicy.egress | indent 2 }}
+{{- end }}
+---
+{{ if or .Values.gerritReplica.networkPolicy.ingress -}}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: gerrit-replica-custom-ingress-policies
+  labels:
+    app.kubernetes.io/component: gerrit-replica
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  policyTypes:
+  - Ingress
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+      app.kubernetes.io/component: gerrit-replica
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  ingress:
+{{ toYaml .Values.gerritReplica.networkPolicy.ingress | indent 2 }}
+{{- end }}
+---
+{{ if or .Values.gerritReplica.networkPolicy.egress -}}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: gerrit-replica-custom-egress-policies
+  labels:
+    app.kubernetes.io/component: gerrit-replica
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  policyTypes:
+  - Egress
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+      app.kubernetes.io/component: gerrit-replica
+      app.kubernetes.io/instance: {{ .Release.Name }}
+  egress:
+{{ toYaml .Values.gerritReplica.networkPolicy.egress | indent 2 }}
+{{- end }}
+---
+{{ if or .Values.istio.enabled -}}
+kind: NetworkPolicy
+apiVersion: networking.k8s.io/v1
+metadata:
+  name: istio-proxy
+  labels:
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  policyTypes:
+  - Egress
+  - Ingress
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+  egress:
+  - ports:
+    - protocol: TCP
+      port: 15012
+  ingress:
+  - ports:
+    - protocol: TCP
+      port: 15012
+---
+apiVersion: networking.k8s.io/v1
+kind: NetworkPolicy
+metadata:
+  name: {{ .Release.Name }}-istio-ingress
+  labels:
+    chart: {{ template "gerrit-replica.chart" . }}
+    heritage: {{ .Release.Service }}
+    release: {{ .Release.Name }}
+    {{- if .Values.additionalLabels }}
+{{ toYaml .Values.additionalLabels  | indent 4 }}
+    {{- end }}
+spec:
+  podSelector:
+    matchLabels:
+      chart: {{ template "gerrit-replica.chart" . }}
+      release: {{ .Release.Name }}
+  ingress:
+  - ports:
+    - protocol: TCP
+      port: 80
+    {{ if .Values.istio.ssh.enabled }}
+    - protocol: TCP
+      port: {{ .Values.gerritReplica.service.ssh.port }}
+    {{- end }}
+    from:
+    - namespaceSelector:
+        matchLabels:
+          name: istio-system
+    - podSelector:
+        matchLabels:
+          istio: ingressgateway
+
+{{- end }}
+{{- end }}