Apr 30 · 8 min read · I blocked Tor exit nodes, then I opened Tor Browser A SaaS I work on has no business serving Tor traffic, and the box had no Tor block of any kind on it. A firewall-level deny felt like the clean, sufficient answer: drop the packets at the kernel, n...
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Feb 11 · 4 min read · As IPv4 exhaustion becomes increasingly real, dual-stack Kubernetes is no longer just an experiment it’s a strategic decision. Recently, I implemented and validated a dual-stack cluster in Oracle Kubernetes Engine on Oracle Cloud Infrastructure, and ...
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Jan 16 · 2 min read · My ISP (Internet Service Provider) gives me /64 ipv6 address on which i configured a postfix mailserver on port 25 which can directly mail to my laptop. But the problem was that the ipv6 address changed every time i connected to my hotspot. So i crea...
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Dec 17, 2025 · 7 min read · I didn’t set out to “solve a hard networking problem.” I just wanted to open a web UI on my phone. The web UI was File Browser running on my home Linux machine. The goal was boring and practical: Open File Browser from my phone From ANYWHERE (meani...
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Dec 17, 2025 · 4 min read · The internet was originally built on a simple yet powerful idea: every device should be able to talk directly to every other device. This concept, known as the end-to-end principle, allowed the early web to thrive. But as the number of connected devi...
Join discussionDec 4, 2025 · 3 min read · An IP address is a unique identifier for a device on a network—much like a home address in the digital world. It allows devices to find each other and exchange data across local and global networks. Types of IP Addresses IPv4 Format: four numbers (0...
Join discussionOct 30, 2025 · 5 min read · Introduction Every time you send a message on WhatsApp, watch a YouTube video, or connect your Alexa speaker to Wi-Fi, your device quietly performs a digital handshake using something called an IP address. Think of it as the “postal address” of your ...
Join discussionOct 3, 2025 · 11 min read · Notes The original post has been published in 2019 on the Amossys blog (not available anymore). I present some pieces of codes which are originally commented by their authors. I keep authors' comments under the format /* comments */ while my own co...
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Sep 8, 2025 · 8 min read · If you've ever worked with IP addresses in JavaScript or TypeScript, you know the pain. Whether you're building a network monitoring dashboard, implementing IPAM (IP Address Management) systems, or just trying to validate and manipulate CIDR blocks, ...
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