Network Policy with Calico

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Network Policy with Calico

This lab covers the Kubernetes feature of Network Policy. The lab utilizes the `kops` installer to create a cluster using the Calico network overlay. The student is guided through the process of first creating a network policy that prohibits pod access, followed by another policy that grants pod access to certain clients and a named server.

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Lab Info

Level

Intermediate

Last updated

Sep 22, 2025

Duration

1h 0m

Challenge

Create the Kubernetes Cluster

You'll start by creating the cluster for the lab. (For specific commands, see the Project Guide and the videos.)
Challenge

Configure the Required Namespace

You'll next create the namespace.
Challenge

Create the Demo Pods

You'll create the pods within the namespace, and test the web server.
Challenge

Enable Isolation

You'll enable isolation.
Challenge

Test Isolation

With isolation enabled, you'll test that in fact you cannot access the web server.
Challenge

Allow Restricted Access Using a Network Policy

You'll now allow restricted access.
Challenge

Verify Access to nginx from the access Pod

From within a pod, you'll ensure you can access the web server.
Challenge

Verify That Access to nginx Is Not Allowed from Another Pod

And, you'll then test that from another pod you cannot access the web server.
Challenge

Delete the Namespace to Clean Up

Finally, you'll clean things up.

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