AOANGADSINGH OBBIinangadsingh.hashnode.dev路Mar 10 路 6 min readPart 1: The Life of a Packet (The Grand Tour)Have you ever typed: ping google.com 鈥nd wondered what actually happens inside the system before you see a reply?For many engineers, the Linux networking stack feels like a black box. Packets go in,00
AOANGADSINGH OBBIinangadsingh.hashnode.dev路Jul 10, 2025 路 4 min read馃 DNS ExplainedWhat is DNS? Ever wondered what magical force lets you type google.com and instantly bring up the world鈥檚 most powerful search engine? No, it鈥檚 not unicorns or fairy dust. It鈥檚 something called DNS, the Domain Name System, aka the internet鈥檚 very own...00
AOANGADSINGH OBBIinangadsingh.hashnode.dev路Jun 28, 2025 路 4 min readWhat is SELinux, and why does it matter?When we are talking about hardening a Linux box, there exists an interesting, frequently misunderstood, and most notably, an integrated-in-many-distributions tool SELinux (Security-Enhanced Linux). If we have servers deployed for enterprise applicati...00
AOANGADSINGH OBBIinangadsingh.hashnode.dev路Sep 29, 2024 路 4 min readRecovering a Linux System After a Full Root PartitionRunning out of space on your Linux system鈥檚 root partition can lead to serious problems, including sudden shutdowns or boot failures. If your system is powered off due to a full root partition, there鈥檚 no need to panic鈥攖here are clear steps to recove...01G
AOANGADSINGH OBBIinangadsingh.hashnode.dev路Aug 3, 2024 路 3 min readTroubleshooting NTP Issues: How to Get Your Linux Server Back on Track?Introduction Time synchronization is critical for the smooth operation of servers, especially in environments where precision and coordination are paramount. Network Time Protocol (NTP) is the cornerstone of maintaining accurate system time across ne...00
