Apr 7 · 3 min read · Content: Today I worked on securing application servers by configuring firewall rules using IPTables. The objective was to restrict access to the Apache service running on port 6300, allowing only th
Join discussionNov 24, 2025 · 4 min read · Task: 1. Install iptables and all its dependencies on each app host. 2. Block incoming port 3000 on all apps for everyone except for LBR host. 3. Make sure the rules remain, even after system reboot. What is iptables? This is a Linux tool, that contr...
Join discussionNov 22, 2025 · 32 min read · Welcome back! 👋 Day 17 of the 100 Days Cloud DevOps Challenge, and today we're stepping into the world of databases! The development team is ready to deploy a new application, but there's a catch - they need a PostgreSQL database configured and read...
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Nov 19, 2025 · 9 min read · 👋 Welcome Back to Day 14 of the 100 Days Cloud DevOps Challenge! Today’s challenge was one of the MOST realistic production-like incidents I’ve faced in this journey so far. This wasn’t just a simple Apache restart.This wasn’t just another firewall ...
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Nov 18, 2025 · 6 min read · Welcome back! 👋 Day 13 of the 100 Days Cloud DevOps Challenge, and today we’re diving into a security incident that could’ve exposed our application to the entire internet. This time it’s not a downed database… but something equally dangerous:🔓 An ...
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Nov 11, 2025 · 5 min read · I wanted to truly understand VPCs beyond clicking buttons in AWS — so I built one myself using only Linux networking tools…and finally understood what happens behind the cloud console magic! If you've ever created a VPC in AWS and wondered "what is a...
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