Setting up a security camera using a Raspberry Pi is a popular and budget-friendly way to create a DIY surveillance system. The Raspberry Pi can be equipped with a camera module and configured to stream video or take periodic snapshots. Here’s a simple guide to help you set up a basic security camera using a Raspberry Pi: Requirements: Raspberry Pi (any model, but newer models will perform better) Raspberry Pi Camera Module (or a compatible USB camera) ...
SSH (Secure Shell) is a cryptographic network protocol used to securely connect to remote systems over an unsecured network. It’s commonly used for managing servers, accessing network devices, and transferring files securely. Here’s a simple breakdown of how it works: 1. Client and Server Client: The system trying to access another system remotely. Usually, you run an SSH client (like ssh on Unix/Linux or PuTTY on Windows). Server: The remote system that the client wants to connect to, which runs an SSH server (like sshd on Unix/Linux). 2. Initiating the Connection When you try to connect to a remote system using SSH, the client sends a request to the SSH server on a specific port (usually port 22). The server then responds by sending its public key to the client. 3. Key Exchange and Authentication Key Exchange: The client and server exchange encryption keys to establish a secure communication channel. They use algorithms like Diffie-Hellman or Elliptic Curve Diffie-Hellman (ECDH) for this. This ensures that even if someone is eavesdropping on the connection, they won’t be able to decrypt the data. ...
Automating a web browser with Selenium allows you to control a browser (like Chrome, Firefox, etc.) using Python code. This is useful for tasks like web scraping, testing, or automating repetitive tasks like filling out forms or interacting with web elements. Here’s a basic guide to get you started: 1. Set up your environment To use Selenium with Python, you’ll need to install the selenium package and a web driver for the browser you want to control. ...