---
title: Secure port set to zero
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Infrastructure as Code (IaC)
  Security > IaC Security Rules > Secure port set to zero
---

# Secure port set to zero

{% callout %}
# Important note for users on the following Datadog sites: app.ddog-gov.com

{% alert level="danger" %}
This product is not supported for your selected [Datadog site](https://docs.datadoghq.com/getting_started/site). ().
{% /alert %}

{% /callout %}

## Metadata{% #metadata %}

**Id:** `3d24b204-b73d-42cb-b0bf-1a5438c5f71e`

**Cloud Provider:** Kubernetes

**Platform:** Kubernetes

**Severity:** High

**Category:** Networking and Firewall

#### Learn More{% #learn-more %}

- [Provider Reference](https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/)

### Description{% #description %}

When using `kube-apiserver`, the `--secure-port` flag should not be set to `0`. Setting `--secure-port=0` disables the API server's secure (HTTPS) listener, which can prevent encrypted communication and potentially expose the server to insecure access. This rule inspects container command arguments in `containers` and `initContainers` for `kube-apiserver` and flags any occurrence of `--secure-port=0`.

## Compliant Code Examples{% #compliant-code-examples %}

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: []
  restartPolicy: OnFailure
```

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver","--secure-port=6443"]
      args: []
  restartPolicy: OnFailure
```

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```yaml
apiVersion: v1
kind: Pod
metadata:
  name: command-demo
  labels:
    purpose: demonstrate-command
spec:
  containers:
    - name: command-demo-container
      image: gcr.io/google_containers/kube-apiserver-amd64:v1.6.0
      command: ["kube-apiserver"]
      args: ["--secure-port=0"]
  restartPolicy: OnFailure
```