5.5.16 Packet Tracer – Implement Physical Security with IoT Devices Answers

5.5.16 Packet Tracer – Implement Physical Security with IoT Devices (Answers)


Part 1: Connect IoT Devices to the Network
Part 2: Add IoT Devices to the Registration Server
Part 3: Explore IoT Security Device Functionality

Background / Scenario

In an attempt to increase the physical security of your home, you have decided to install some Internet of Things (IoT) devices to allow you to remotely monitor your home while you are away. In this Packet Tracer activity, you will install an IoT device to enhance home security. You will then configure all the IoT devices to connect to the wireless network and communicate with a remote IoT registration server.


Part 1: Connect IoT Devices to the Network

In this part, you will connect IoT devices to the wireless network and implement MAC address filtering.

Step 1: Connect the Siren to the Door

a. Click Home and locate the Home_Siren and Home Doors in the living room.

b. In the toolbar at the bottom, click Connections > IoT Custom Cable, which is the second to last option.

c. Click Home_Siren > DO interface, and then click Home Doors > DO interface.

d. Press and hold the ALT key and then click the door to open and close it. Notice that opening the door will now activate the siren.

Step 2: Associate all IoT Devices to HomeNet wireless network.

The Home Wireless Router is pre-configured to use WPA2-PSK and MAC Address filtering to control who can associate with the network and which devices can use the network to transfer traffic. All new devices must conform to the current configuration.

a. Locate the four wireless IoT devices:

  • Home_Siren
  • Home Doors
  • Home_Motion_Sensor (home office windows)
  • Home_Webcam (home office bookshelf)

b. Click Home_Siren, and then Config tab > Wireless0.

c. Configure the SSID and Authentication mode.

  • SSID: HomeNet
  • Authentication: WPA2-PSK
  • Pass Phrase: ciscorocks

d. In IP Configuration, click DHCP. Verify the device received an IP address from the network.

Note: It may be necessary to toggle between Static and DHCP to force Packet Tracer to converge on your settings.

e. Record the MAC address for the IoT device. Format the addresses with colons between each two hexadecimal numbers instead of a period between each four hexadecimal numbers. This format is required for the next step when you will apply MAC address filtering.



Home Doors



f. Repeat these steps for each IoT device.

Step 3: Configure MAC address filtering to allow the IoT devices.

a. Click Home Office PC > Desktop tab > Web Browser.

b. Login to the Home Wireless Router at Use admin as both the username and password.

c. Click Home Wireless Router > GUI tab.

d. Click Wireless, and then Wireless MAC Filter.

e. Verify that the filter is enabled for the 2.4 GHz wireless port and that it is set to permit PCs to access the wireless network.

f. Add the four IoT device MAC addresses to the table.

g. Scroll to the bottom and click Save Settings.

h. The Home Wireless Router will reboot. Close the Web Browser, and then click IP Configuration. If necessary, toggle the DHCP and Static buttons to renew the IP configuration so that Home Office PC has an IP address from the network.

Part 2: Add IoT Devices to the Registration Server

In this Part, you will sign up for an account with a IoT remote monitoring service. You will then register the IoT devices to communicate with the service. This will allow you to remotely monitor the IoT devices through a web portal.

Step 1: Create an account on the ISP IoT Registration Server.

a. On Home Office PC, close IP Configuration, and then click Web Browser.

b. Navigate to

c. Click Sign up now and create a new account with username HomeUser and password Pa$$w0rd.

Step 2: Register each IoT device with the Registration Server

Each of the four IoT devices must be registered with a registration server to remotely monitor and manage the device. Repeat the following steps for each IoT device.

a. Click the device > Config tab > Settings under GLOBAL.

b. Scroll to the IoT section at the bottom of the page and enter the following information:

  • Select Remote Server
  • Server Address:
  • User Name: HomeUser
  • Password: Pa$$w0rd

c. Click Connect button. The button will change to Connecting and then to Refresh in a few seconds. The IoT device is now registered with the server.

Note: If it does not change to Refresh then you may have entered the information incorrectly. Therefore, re-enter the information and repeat this step.

d. Repeat the above steps to register all the IoT devices.

Step 3: Verify all devices are registered.

a. Return to the Web Browser on the Home Office PC. If necessary, browse to and login with username HomeUser and password Pa$$w0rd.

b. Verify all four IoT devices are registered on the server.

Part 3: Explore IoT Security Device Functionality

In this part, you will explore the functionality of the IoT devices and monitor their states on the IoT Registration Server.

Step 1: Observe and control IoT devices from the registration server.

a. From the Web Browser on the Home Office PC, click each section for each IoT device to display device details.


What is the status of each device?
All devices should show “On” indicating they have an active connection to the IoT registration server.

b. Click the red rectangle under Home Doors to activate it.


What happened?
The siren and door rectangles simultaneously changed to green indicating that they are now active. This also confirms that they are linked. In the living room, the door is open and the siren is red

c. Click the door rectangle again to deactivate the device.


What happened?
The siren and door rectangles simultaneously turned red indicating that they are no longer active.

d. Click the green rectangle for Home_Webcam.


What happened?
The video feedback was turned off.

e. Click the green rectangle again to turn on the Home_Webcam.

f. Click the red circle for Home_Motion_Sensor. Nothing will happen because the motion sensor only sends information to the registration server. This is an example of a device that can be monitored only.

Step 2: Interact with the sensors in the home.

In Packet Tracer, the IoT devices can normally be activated by holding down the ALT key and then clicking the device (ALT-click). The Motion sensor is activated by holding down the ALT key and moving the mouse over the sensor. Have the IoT registration server screen visible for these actions.

a. ALT-Click on the door.


What happened?
The images for both the door and the siren changed indicating they were active. At the same time this information was sent to the registration server which showed both had been activated.

b. ALT-Click on the webcam.


What happened?
The display light on the webcam extinguished indicting it was turned off. This same information was reflected on the registration server.

c. Depress the ALT key and move your mouse over the motion sensor.


What happened?
The activity light illuminated when the sensor detected motion. This was also shown on the registration server by the activity light turning green while the sensor showed active.

Reflection Questions

1. What advantages do IoT enabled devices provide for home security?
IoT devices are easy to install and configure. They can also make use of existing home network security techniques to enhance their security.

2. What is the advantage of using a registration server for IoT enabled devices?
The registration server allows IoT devices to be remotely monitored and controlled. This allowed such things as video surveillance and monitoring of important services from remote locations.

3. Search the internet to find what types of IoT enabled devices are used for home security?
Answers will vary but may include such things as fire alarms, video monitoring devices, entry alarms, motion sensors, water sensors, device monitoring, etc



Inline Feedbacks
View all comments
Would love your thoughts, please comment.x