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Lock Down Inter-Pod Communication with NetworkPolicies

NetworkPolicies are a great way to control network communication within a Kubernetes cluster. In this lab, you will make a Kubernetes cluster more secure by using NetworkPolicies to restrict network traffic to only traffic that is actually needed by applications running in the cluster.

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Labs

Path Info

Level
Clock icon Advanced
Duration
Clock icon 30m
Last updated
Clock icon Sep 01, 2025

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Table of Contents

  1. Challenge

    Block Incoming Traffic by Default for All Pods in the web-auth Namespace

    Create a configuration that causes incoming traffic to all Pods in the web-auth namespace to be blocked by default.

  2. Challenge

    Allow Traffic from the auth-client Pod to Reach the web-auth-server

    Allow the auth-client Pod to reach web-auth-server. Both Pods are in the web-auth namespace. You can use existing labels to accomplish this.

    • auth-client needs to be able to reach web-auth-server on port 80.
    • Only Pods with the appropriate label should be able to access web-auth-server, even if they are in the web-auth namespace.
    • Pods outside the web-auth namespace should never be able to access web-auth-server, no matter what labels they have.
Pluralsight Skills - Labs - Pluralsight
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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

What's a lab?

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

Did you know?

On average, you retain 75% more of your learning if you get time for practice.
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