Book Image

Internet of Things with Raspberry Pi 3

By : Maneesh Rao
Book Image

Internet of Things with Raspberry Pi 3

By: Maneesh Rao

Overview of this book

This book is designed to introduce you to IoT and Raspberry Pi 3. It will help you create interesting projects, such as setting up a weather station and measuring temperature and humidity using sensors; it will also show you how to send sensor data to cloud for visualization in real-time. Then we shift our focus to leveraging IoT for accomplishing complex tasks, such as facial recognition using the Raspberry Pi camera module, AWS Rekognition, and the AWS S3 service. Furthermore, you will master security aspects by building a security surveillance system to protect your premises from intruders using Raspberry Pi, a camera, motion sensors, and AWS Cloud. We'll also create a real-world project by building a Wi-Fi – controlled robot car with Raspberry Pi using a motor driver circuit, DC motor, and a web application. This book is a must-have as it provides a practical overview of IoT’s existing architectures, communication protocols, and security threats at the software and hardware levels—security being the most important aspect of IoT.
Table of Contents (11 chapters)

Improving SSH security

SSH is one of the most common techniques to access Raspberry Pi over the network and it becomes necessary to use if you want to make it secure.

Username and password security

Apart from having a strong password, we can allow and deny access to specific users. This can be done by making changes in the sshd_config file. Run the sudo nano /etc/ssh/sshd_config command.

This will open up the sshd_config file; then, add the following line(s) at the end to allow or deny specific users:

  • To allow users, add the line: AllowUsers tom john merry
  • To deny users, add this line: DenyUsers peter methew

For these changes to take effect, it is necessary to reboot the Raspberry Pi.