#dns Development Tutorials & Tips | Roast Dev

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Hosting My Portfolio on AWS: A Serverless Journey with S3, CloudFront, and Lambda

This article describes how I hosted my static portfolio website, which is a static website in the cloud using Amazon Web Services, leveraging serverless technology. Thanks to Namecheap's free domain f...

04.04.2025 0 Read More

The Ultimate Guide to DNS: What It Is, How It Works, and How to Manage It

The Ultimate Guide to DNS: What It Is, How It Works, and How to Manage It Much like a phone book, a domain name system (DNS) bridges the communication gap between humans and computers by matc...

12.04.2025 0 Read More

Want to block websites or test local domains without touching your DNS?

Want to block websites or test local domains without touching your DNS? In this quick Ubuntu tip, I’ll show you how to edit the /etc/hosts file to block sites like Facebook or fake domains for devel...

14.04.2025 0 Read More

JIRA Avatars Not Showing in Chrome on Mac? Here’s What Worked for Me

One of the most frustrating parts of debugging isn’t always the bug itself—it’s when you can’t find a single working solution anywhere. That’s exactly what happened to me when JIRA avatars s...

15.04.2025 0 Read More

DNS Configuration in Red Hat Linux: A Beginner’s Guide

DNS (Domain Name System) is like the phonebook of the internet.It translates human-friendly website names (like google.com) into machine-readable IP addresses (like 8.8.8.8). Without DNS, you’d have...

24.04.2025 0 Read More

Phantom DNS Query to GCP VM Metadata Service in My AWS Workload 👻 — Revealed by Route 53 Resolver Logging 🔍

I Found Suspicious DNS Calls on AWS I was debugging flaky outbound calls from an AWS Fargate task. To gain better visibility into potential network issues, I followed the common best practice...

27.04.2025 0 Read More

Securing Your DNS Server in Red Hat Linux Against Attacks

A DNS server is a crucial component of any network, translating domain names into IP addresses. However, DNS-based attacks—such as DNS spoofing, cache poisoning, and DDoS attacks—can disrupt servi...

02.05.2025 0 Read More