Richard Chamberlain articles - 60 total
SSH Authentication Key Rotation: Why and How to Expire SSH Keys
Learn how to implement SSH key expiration and rotation using AuthorizedKeysCommand for better security hygiene on Linux servers.
Secure SSH Access with Modular Policy Files
Learn how to harden your SSH server using modular configuration files and reusable security policies. Improve manageability, mitigate vulnerabilities, and enforce best practices.
🚀 Secure Remote Deployments with SSH Agent Forwarding and GitHub
Learn how to use SSH Agent Forwarding with GitHub for secure, scalable deployments—without exposing private keys on remote servers.
🔐 AppArmor and ROS2 – The Article I Tried Not to Write
Discover why AppArmor may not be ideal for ROS2 development with colcon. Learn from real-world insights comparing AppArmor, SELinux, and Oracle Linux in robotics system security.
🛡️ Blocking Admin SSH Logins with SELinux (`ssh_sysadm_login`)
Preventing direct administrative SSH access is a vital component of any defense-in-depth strategy. In...
Secure SSH by Using a Restricted User: Smarter Linux Hardening
Secure your Linux systems by using a restricted user for SSH access and separating admin privileges. Learn how to configure rbash, limit executable commands, and enhance server security with this practical guide for sysadmins.
Are Your Linux Files as Secure as They Should Be?
Learn how to secure Linux files using DAC, ACLs, and MAC. Explore key tools like AppArmor, SELinux, and Auditd to enhance system access control and prevent unauthorized access.
🛡️ Complete Guide to Fail2Ban: Protect Your SSH Server from Brute Force Attacks
Learn how to secure your SSH servers against brute force attacks using Fail2Ban. Step-by-step setup, testing scripts, and advanced hardening tips included.
🛡️ Securing ROS2 Robotic Projects with Auditd: A Practical Guide
Learn how to monitor and secure your projects using #Auditd and #Linux tools. Don't wait for a breach—audit and secure NOW!
🔐 How to Set Up Multi-Factor Authentication (MFA) on Ubuntu for SSH
Secure your Linux servers with this easy guide on setting up Multi-Factor Authentication (MFA) for SSH on Ubuntu 24.04 using Google Authenticator.
🔐 Securing ROS 2 Robots: Network Intrusion Detection with Suricata
As robots become more connected and operate across public and private networks, network-level intrusion detection is critical. In this guide, part of our comprehensive ROS 2 robot hardening series, you'll learn how to install and configure Suricata on Ubuntu 24.04 to monitor ROS 2 DDS traffic and detect suspicious activity in real time. We walk through host-based deployment, automated scripting via main.sh, and how to validate your setup—empowering you to build safer, more resilient robotic systems.
🔐 Mastering SSH Key-Based Authentication: Secure Passwordless Login for Linux and Windows
Learn how to set up secure, passwordless SSH login on Linux and Windows using SSH keys. Boost your server security and streamline remote access today.
🔐 Securing ROS2 Nodes with SROS2: Encryption and Permissions for Robot Communications
Learn how to secure communication between ROS2 nodes using SROS2. This guide covers keystore setup, node certificate creation, permission management, and encrypted messaging for robotic systems running on Linux.
Limiting SSH Access with TCP Wrappers, AllowUsers, and IP Restrictions
Learn how to secure SSH access on your Linux servers using TCP Wrappers, AllowUsers, AllowGroups, and IP restrictions. Step-by-step examples included for locking down your environment and preventing unauthorized access.
🔐 Robot Security with ROS2 and UFW: Firewalls for the Future of Robotics
Learn why robot security is essential in a connected world. This guide explores the unique cybersecurity risks robots face, how to configure UFW firewalls for ROS 2 robots, and best practices for securing autonomous systems. Keep your robots safe, updated, and resilient against cyber threats with practical Linux firewall configurations tailored for robotics
Setting Up a Secure ROS 2 System: Part 4 AppArmor and Auditd
Secure your ROS 2 robotics environment on Ubuntu using powerful Linux security tools like AppArmor, SELinux, and Auditd. This step-by-step guide covers how to set up mandatory access control, monitor system activity, and build hardened, audit-ready ROS 2 deployments.
Your First Steps to a Hardened SSH Server
A beginner-friendly yet technical exploration of SSH and its critical role in Linux system administration. Learn about the SSH daemon (`sshd`), its configuration, and why default settings aren't always secure.
Setting Up a Secure ROS 2 System: Part 3 Installing ROS 2
Learn how to automate and streamline your ROS 2 setup on Ubuntu 24.04 with our detailed walkthrough of the ros2_install.sh script. This guide covers everything from installing prerequisites and configuring package repositories to initializing rosdep and setting up your ROS 2 development environment. Ideal for robotics and automation developers looking to save time and ensure a reliable ROS 2 installation. Boost your productivity with this step-by-step guide tailored for the Noble Numbat release!
🛡️ Setting Up a Secure ROS 2 System: Part 2 – Updating Ubuntu and Creating a ROS User
Secure your ROS 2 robotic system with SROS2! This guide walks you through setting up encrypted communication between nodes using OpenSSL, certificates, and permission files.
🔒 Secure ROS2 Setup: Hardening Your Robot Project from the Start
Secure your ROS2 robot projects from the ground up. This series walks you through essential Linux hardening, ROS2 installation best practices, and network security steps to protect your robotics systems from cyber threats. Ideal for makers, developers, and anyone building secure, connected robots.
Running Linux in QEMU: How to Build a VM from an ISO
Learn how to create and boot a Linux virtual machine using QEMU and an ISO file, with support for x86 and PowerPC architectures. Perfect for portable testing environments.
Ansible Automation
Automated tools like Ansible are game-changers for rebuilding servers I've been using Ansible a lot...
How to Use QEMU to Run Linux VMs in Minutes
Learn how to quickly spin up Kali Linux and Fedora Server virtual machines using QEMU with real-world examples and command explanations.
QEMU: Lightweight Virtualization for the Command Line Enthusiast
Discover how QEMU, a powerful CLI-based hypervisor, makes it easy to spin up VMs for quick testing and development across platforms—even on laptops.
🚀 Automate Your GitHub Backups with Bash (Stop Losing Code!)
Struggling to keep your code backed up on GitHub? Learn how to automate project linking, authentication, and code check-ins using Bash scripts. Improve your workflow with this step-by-step guide!
Securing a Prankster Robot: Linux Security Strategies to Prevent Rogue AI
This article explores a security architecture designed to prevent a mischievous clown robot from going rogue. By leveraging Linux security policies, encryption, and strict access controls, it ensures that the robot’s prank mechanisms—like its bubble gun—operate safely. Key protections include isolating critical modules, enforcing token-based authentication, and implementing kernel-level security with SELinux and AppArmor to prevent unauthorized access.
Enhancing Code Reusability in Robotics: A Modular WiFi Scanner with ROS2 & Systemd
Learn how to build a modular WiFi scanner in Python that separates core logic from execution methods. We’ll integrate it with Systemd for automation and ROS2 for real-time robotics applications, demonstrating the power of Separation of Duty for better maintainability and reusability.
Building an Ethical Hacking Robot with ROS2: WiFi Scanner Implementation
Discover how to develop a WiFi-scanning robot using ROS2 (Robot Operating System 2). Learn about ROS2 topics, Python scripting, and practical applications for ethical hacking and network analysis.
Building a ROS2-Based Autonomous Cybersecurity Robot for Ethical Hacking
Explore the intersection of cybersecurity and robotics with this ROS2-based autonomous ethical hacking robot. Designed for penetration testing and security research, this project integrates Zero Trust Security, encryption, and AI-driven threat detection to secure robotic systems. Learn how to identify, test, and defend against cyber threats in autonomous robots.
Automate Port Knocking with Dynamic Port Rotation for Secure SSH Access
Take SSH security to the next level! Learn how to automatically rotate Port Knocking sequences daily using a systemd timer, making it nearly impossible for attackers to guess your SSH access.