Practical Linux security & sysadmin guides for small teams.
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Secure Multi-Party Computation Setup on Debian
TL;DR First, ensure your system is up-to-date and install the necessary packages for secure multi-party computation (SMPC): sudo apt update && sudo apt upgrade -y # Update package lists and upgrade installed packages sudo apt install -y python3-pip python3-venv # Install Python3 and virtual environment tools Set Up a Virtual Environment Create and activate a Python virtual environment to isolate your SMPC setup: ...
Homomorphic Encryption Implementation on Debian
TL;DR First, update your package list and install the necessary packages for homomorphic encryption: sudo apt update && sudo apt install -y build-essential libgmp-dev libntl-dev # Update and install dependencies Install HElib Clone and build the HElib library, which is a popular library for homomorphic encryption: git clone https://github.com/homenc/HElib.git # Clone HElib repository cd HElib mkdir build && cd build cmake .. make -j4 # Compile using 4 cores sudo make install # Install the library Basic Usage Example Create a simple C++ program to perform basic homomorphic encryption operations: ...
Privacy-Preserving Analytics with Differential Privacy on Debian
TL;DR To implement differential privacy, you need to install Python and some essential libraries. Run the following commands: sudo apt update && sudo apt upgrade -y # Update and upgrade packages sudo apt install -y python3 python3-pip # Install Python 3 and pip Set Up a Virtual Environment Create a virtual environment to manage dependencies: ...
Extended Detection and Response (XDR) with Debian
TL;DR To set up XDR on Debian 13, start by installing essential packages: sudo apt update && sudo apt install -y auditd audispd-plugins # Update package list and install audit tools Configure Audit Rules Edit the audit rules to monitor critical files and directories: sudo nano /etc/audit/rules.d/audit.rules Add the following lines to monitor /etc/passwd and /etc/shadow: ...
Runtime Application Security (RASP) on Debian Servers
TL;DR This guide provides a quick setup for Runtime Application Security Protection (RASP) on Debian 13 servers. RASP helps in detecting and blocking attacks in real-time by integrating security directly into your application runtime environment. Install Prerequisites First, ensure your system is up-to-date and install necessary packages: sudo apt update && sudo apt upgrade -y # Update and upgrade the system sudo apt install build-essential libssl-dev -y # Install essential build tools and libraries Install RASP Tool For this example, we’ll use AppArmor, a security module for Linux: ...
Threat Intelligence Integration with MISP on Debian
TL;DR This guide provides a quick setup for integrating Threat Intelligence with MISP (Malware Information Sharing Platform) on a Debian 13 server. MISP is an open-source threat intelligence platform used for sharing, storing, and correlating Indicators of Compromise (IOCs) of targeted attacks, threat intelligence, financial fraud information, vulnerability information, and even counter-terrorism information. ...
Security Information and Event Management (SIEM) with Wazuh
TL;DR This guide provides a quick setup for deploying Wazuh as a Security Information and Event Management (SIEM) solution on a Debian 13 server. Wazuh helps in monitoring, detecting, and responding to threats in real-time. Install Wazuh Add Wazuh Repository: curl -s https://packages.wazuh.com/key/GPG-KEY-WAZUH | sudo apt-key add - # Add Wazuh GPG key echo "deb https://packages.wazuh.com/4.x/apt/ stable main" | sudo tee /etc/apt/sources.list.d/wazuh.list # Add Wazuh repo Update and Install Wazuh Manager: ...
Data Loss Prevention (DLP) with rsyslog on Debian
TL;DR This guide provides a quick setup for implementing Data Loss Prevention (DLP) using rsyslog on a Debian 13 server. The goal is to ensure that sensitive logs are securely managed and monitored. Install rsyslog First, ensure that rsyslog is installed and running: sudo apt update && sudo apt install -y rsyslog # Update package list and install rsyslog sudo systemctl enable rsyslog # Enable rsyslog to start on boot sudo systemctl start rsyslog # Start the rsyslog service Configure rsyslog Edit the rsyslog configuration to define log rules: ...
Cloud Access Security Broker (CASB) Implementation on Debian
TL;DR Implementing a Cloud Access Security Broker (CASB) on Debian 13 involves setting up a secure environment to monitor and control data traffic between cloud services and users. This guide provides a quick setup using open-source tools. Install Required Packages First, ensure your system is up-to-date and install necessary packages: ...
Secure Remote Work Infrastructure on Debian
TL;DR Ensure OpenSSH is installed and running: sudo apt update && sudo apt install -y openssh-server # Update package list and install OpenSSH sudo systemctl enable ssh # Enable SSH to start on boot sudo systemctl start ssh # Start the SSH service Secure SSH Configuration Edit the SSH configuration file to enhance security: ...