H 242: Cloudflare WARP (10 pts extra)

What You Need for This Project

Purpose

To protect the network traffic with Cloudflare's WARP service, a free VPN service.

Deactivating Tailscale

If you have Tailscale on your Windows machine, right-click the icon in the Notification Area on the lower right and click Exit.

Observing Privacy Exposures

Installing Wireshark

On your Windows client machine, If you don't already have it, download and install Wireshark from

https://wireshark.org

Monitoring "puppy" Packets

Launch Wireshark.

In the main Wireshark window, double-click Ethernet0, or whatever adapter connects to the Internet on your system, as shown below.

In the the "Capturing from Ethernet0" window, at the top left, in the "Apply a display filter" bar, type this:

frame contains "puppy"
and press Enter.

The filter bar turns green, as shown below.

Wireshark is now listening for any packets containing the word "puppy".

Sending HTTP Traffic

In Edge, go to

http://ad/samsclass.info/cookielogin

Log in with a username and password that contain "puppy", as shown below.

The login is rejected. The browser sent the username and password to the server.

In Wireshark, you see your username and password being sent over the Internet without encryption, as shown below.

Installing WARP on Windows

On Windows, in a Web browser, go to

https://one.one.one.one/

Click the Windows button. Download and install the software.

In the lower right of your Windows desktop, near the clock, there are several icons.

Click the WARP icon, outlined in red in the image below.

In the "What is WARP?" box, click Next.

In the "Our Commitment to Privacy" box, click Accept.

You see a WARP box, as shown below.

Click the big toggle button above the word "Disconnected" to connect WARP.

Note: on my Windows 11 machine, the toggle button is invisible. Just click there anyway.

WARP is enabled, as shown below.

Testing the Encryption Again

In Wireshark, click Capture, Restart.

Click "Continue without Saving".

In Edge, go to

http://ad/samsclass.info/cookielogin

Log in with a username and password that contain "puppy", as shown below.

Wireshark doesn't see any packets containing "puppy". The VPN is working!

Flag H 242.1: Adapter Name (10 pts)

On your Windows machine, click Start and type CMD. Open a Command Prompt and execute this command:
ipconfig

The flag is covered by a green rectangle in the image below.

Posted 10-31-25