Title: security  - Immanuel Raj

---

# Tag: security

 * [⌊A tech-themed image with a dark background. A glowing orange Ubuntu logo on
   the left is connected to a glowing blue globe (representing the internet) on 
   the right by a line with the word 'Netplan' in the center.⌉⌊A tech-themed image
   with a dark background. A glowing orange Ubuntu logo on the left is connected
   to a glowing blue globe (representing the internet) on the right by a line with
   the word 'Netplan' in the center.⌉[
 * 
   ## 󠀁[How to Add Floating IP to Ubuntu and Debian Servers with Netplan](https://immanuelraj.dev/netplan-floating-ip-configuration/)󠁿
   
 * [August 14, 2025](https://immanuelraj.dev/netplan-floating-ip-configuration/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [Linux](https://immanuelraj.dev/category/linux/), [Networking](https://immanuelraj.dev/category/networking/),
   [Self Hosting](https://immanuelraj.dev/category/self-hosting/)
 * Read Time
 * 8–11 minutes
 * Learn how to configure floating IP addresses on Ubuntu and Debian servers using
   Netplan for high availability and seamless failover. This comprehensive guide
   covers YAML configuration, troubleshooting, security best practices, and automation
   scripts for production environments.
 * [⌊Logo for Frappe Administrator Block featuring a blue hexagon with a white padlock
   icon on the left, and the text 'FRAPPE Administrator Block' in bold and regular
   navy blue font on the right, set against a white background.⌉⌊Logo for Frappe
   Administrator Block featuring a blue hexagon with a white padlock icon on the
   left, and the text 'FRAPPE Administrator Block' in bold and regular navy blue
   font on the right, set against a white background.⌉[
 * 
   ## 󠀁[Complete Frappe Security Guide: Block Administrator Installation & Configuration](https://immanuelraj.dev/secure-frappe-admin-block-administrator-guide/)󠁿
   
 * [July 30, 2025](https://immanuelraj.dev/secure-frappe-admin-block-administrator-guide/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [ERPNext](https://immanuelraj.dev/category/erpnext/), [Frappe](https://immanuelraj.dev/category/frappe/)
 * Read Time
 * 7–11 minutes
 * Comprehensive guide to securing Frappe Framework installations with Block Administrator.
   Learn enterprise-grade installation procedures, technical architecture, security
   benefits, and troubleshooting for protecting administrator accounts from unauthorized
   access and brute-force attacks.
 * 
   ## 󠀁[Cloudflare Header Tips](https://immanuelraj.dev/cloudflare-header-tips/)󠁿
   
 * [April 3, 2024](https://immanuelraj.dev/cloudflare-header-tips/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [Cloudflare](https://immanuelraj.dev/category/cloudflare/), [Security](https://immanuelraj.dev/category/security/),
   [Self Hosting](https://immanuelraj.dev/category/self-hosting/), [SSL](https://immanuelraj.dev/category/ssl/),
   [Web](https://immanuelraj.dev/category/web/)
 * Read Time
 * 2–3 minutes
 * I am pretty sure any developer would have known about cloudflare. Be it for Hosting,
   Ai, Storage, Mail, Security, Infra, Tunnels, DNS etc. When you are a guy who 
   uses free stuff to get things done for you, you cannot pay for things that you
   want, but also cannot stop from getting good things. Not…
 * 
   ## 󠀁[Linux Saviours](https://immanuelraj.dev/linux-saviours/)󠁿
   
 * [January 19, 2024](https://immanuelraj.dev/linux-saviours/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [Linux](https://immanuelraj.dev/category/linux/)
 * Read Time
 * 9–14 minutes
 * Few Basic linux (Ubuntu) stuff that will save you time and get the job done with
   ease. Linux and it’s programs are by default built to allows users to accomplish
   tasks easily. But many people dont even know that there are many other useful
   commands and tools.Many people know the basics or only what they…
 * [⌊The Philosophy and History of Linux⌉⌊The Philosophy and History of Linux⌉[
 * 
   ## 󠀁[The Philosophy and History of Linux](https://immanuelraj.dev/the-philosophy-and-history-of-linux/)󠁿
   
 * [January 18, 2024](https://immanuelraj.dev/the-philosophy-and-history-of-linux/)
 * —
 * by
 * [Immanuel Raj](https://immanuelraj.dev/author/iamimmanuelraj/)
 * in [Linux](https://immanuelraj.dev/category/linux/)
 * Read Time
 * 2–3 minutes
 * Linux has a rich history rooted in the Open Source movement and UNIX philosophy.
   From the GNU Project to Linus Torvalds’ creation of the Linux kernel, this article
   explores the origins, principles, and impact of Linux on modern computing. Discover
   how Free Software, the GPL, and key design philosophies have shaped Linux into
   the powerful…