How to Set Up Free Email with Zoho Mail and Your Custom Domain Using Cloudflare DNS
Want a professional email like you@your_domain without paying for Gmail or Outlook? With Zoho Mail’s Forever Free Plan, you can
Web Platforms & Applications
Configuration
Identity, Security & PKI
Install OpenLDAP on Ubuntu 24.04 with LDAPS via OPNsense HAProxy
In this guide, you’ll learn how to install and configure OpenLDAP on Ubuntu 24.04, and expose it securely using HAProxy
Data Platforms & Analytics
Getting Started with JupyterLab: A Quick Notebook Example for Data Analysis
This quick-start example builds on our previous post about installing JupyterLab on Ubuntu 24.04, where we configured a secure, password-protected
IoT & Embedded Systems
ESP32 Firmware for BLE Wi-Fi Provisioning and Secure MQTT with X.509 Authentication to ThingsBoard
In a previous post, I explained how to secure ThingsBoard using X.509 client certificate authentication and enable auto-provisioning.This post focuses
Identity, Security & PKI
Secure ThingsBoard MQTTS with X.509 Certificate Chain and Auto-Provisioning
This guide builds on: to enable: Why We Removed MQTTS from HAProxy In the earlier setup, HAProxy terminated TLS for
Identity, Security & PKI
How to Install HashiCorp Vault OSS on AWS EC2 (Ubuntu 24.04)
This guide installs Vault OSS on an EC2 Ubuntu 24.04 instance, enables AWS KMS auto-unseal, and exposes the Vault UI
Networking & Connectivity
Install and Configure HAProxy on Bare Metal Ubuntu 24.04
Set up HAProxy 3.2 on Ubuntu 24.04 and forward HTTP/HTTPS to a backend Jenkins host using SNI-based TLS passthrough. HAProxy
DevOps & Software Delivery
Set Up a Gerrit Replica
This guide configures a Gerrit replica that: Prerequisite Install Gerrit on both servers using: Install Gerrit 3.11.2 on Ubuntu 24.04
Android & Mobile Development
How to Enable ccache in AOSP 15
ccache is a powerful compiler cache that speeds up Android builds by avoiding redundant compilation. AOSP 15 fully supports it
Identity, Security & PKI
Secure Jenkins with Keycloak SSO
This guide shows how to configure Jenkins to authenticate users via Keycloak using OpenID Connect (OIDC). It’s based on: Prerequisites