June 2024 – Sadik Hasan

Automated Deployment Script for Java Applications using Docker and Docker Compose

Introduction Deploying Java applications efficiently is crucial for ensuring smooth updates and minimizing downtime. This comprehensive guide provides an automated deployment script along with necessary Docker and Docker Compose configurations. This setup allows seamless deployment of Java applications, ensuring they are built, tested, and deployed with minimal manual intervention. Deployment Script Here’s the updated deployment […]

Dev ops, Linux

Exim Setup Guide on Linux

Setting up Exim, a popular mail transfer agent (MTA), on Debian can be straightforward with the right steps. Here’s a comprehensive guide to installing and configuring Exim on a Debian system: Step 1: Install Exim First, ensure your system packages are up to date. Open a terminal and run the following commands: Now, install Exim:

Dev ops

Setting Up StrongSwan for Site-to-Site IPsec VPN

StrongSwan is an open-source IPsec-based VPN solution that provides secure communication between two or more networks. In this guide, we’ll walk through the steps to set up StrongSwan on Ubuntu for a site-to-site IPsec VPN. Prerequisites Before we begin, ensure you have the following: Step 1: Install StrongSwan Update the repository indexes and install StrongSwan

Dev ops

Setting Up WireGuard VPN

WireGuard is a modern VPN (Virtual Private Network) protocol known for its simplicity and efficiency. In this guide, we’ll walk through the steps to install and configure WireGuard on a Linux server and client. Step 1: Installation Begin by updating the package list and installing WireGuard on your server: Step 2: Generating Keypairs Navigate to

Dev ops, Programming

Setting Up Keycloak for Testing Authentication

Keycloak is an open-source identity and access management solution that provides single sign-on (SSO) and multi-factor authentication capabilities. In this guide, we’ll walk through the steps to set up Keycloak on a virtual machine for testing authentication. Step 1: Download and Install Keycloak Add the following content to the script: Make the script executable and

Dev ops, Linux

Setting Up Let’s Encrypt SSL Certificates

Introduction In this guide, we’ll set up Let’s Encrypt SSL certificates for your server. SSL/TLS certificates are essential for securing communication between clients and your server. Let’s Encrypt provides free SSL certificates, making it an excellent choice for securing your services. Step 1: Install Certbot Certbot is a tool for automatically obtaining and managing Let’s

Dev ops, Linux

Setting Up Ejabberd

Introduction In this guide, we’ll set up the Ejabberd XMPP server, configure LDAP authentication, and secure it with SSL certificates. We’ll reference our previous setups of Inspircd and LDAP for user authentication and SSL certificate generation. Step 1: Install Ejabberd Begin by installing the Ejabberd XMPP server: Step 2: Configure Ejabberd Navigate to the Ejabberd

Dev ops, Linux

Setting Up Inspircd

Introduction In this guide, we’ll set up the Inspircd IRC server, including generating SSL certificates and configuring the server. We’ll reference our previous setup of the LDAP server where necessary for user authentication. Step 1: Install Inspircd Begin by installing the Inspircd IRC server: Step 2: Generate SSL Certificates Navigate to the Inspircd configuration directory

Dev ops, Linux

Setting Up LDAP Server

Introduction In this guide, we’ll set up an LDAP (Lightweight Directory Access Protocol) server, which will be used for centralized authentication and directory services. LDAP is commonly used in network environments to provide a single source of truth for user authentication and authorization. Step 1: Install LDAP Server and Utilities Begin by installing the LDAP

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Configuring UFW Firewall for Your Server

Introduction In this guide, we’ll walk through the essential steps to configure the UFW firewall on your server. Proper firewall configuration is crucial for securing your server against unauthorized access and ensuring that only necessary services are accessible. Step 1: Install UFW The Uncomplicated Firewall (UFW) is a simple and user-friendly tool for managing firewall