---
title: "Discussion on \"📘 Day 43: DNS, DHCP, NAT & Firewall Basics\" | Hashnode"
description: "Discussion on \"📘 Day 43: DNS, DHCP, NAT & Firewall Basics\". Explore the basics of DNS, DHCP, NAT, and firewalls with practical hands-on firewall configuration in this insightful networking journey"
url: "https://hashnode.com/posts/day-43-dns-dhcp-nat-and-firewall-basics/68a1e9a3cf66b2b7d7c946a8"
---

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# [📘 Day 43: DNS, DHCP, NAT & Firewall Basics](https://ritesh-devops.hashnode.dev/day-43-dns-dhcp-nat-and-firewall-basics?utm_source=hashnode&utm_medium=feed)

Explore the basics of DNS, DHCP, NAT, and firewalls with practical hands-on firewall configuration in this insightful networking journey

Aug 17, 2025 · 3 min read · ritesh-devops.hashnode.dev  
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## Written by

[Ritesh Singh](https://hashnode.com/@ritesh456)

@ritesh456

  
[View profile](https://hashnode.com/@ritesh456)

🔥 🚀 Sharing My 100-Day Journey to Becoming a DevOps Engineer.

Hi, I’m Ritesh 👋 I’m on a mission to become a DevOps Engineer — and I’m learning in public every single day.With a full-time commitment of 8–10 hours daily, I’m building skills in: ✅ Linux✅ Git & GitHub✅ Docker & Kubernetes✅ AWS EC2, S3✅ Jenkins, GitHub Actions✅ Terraform, Prometheus, Grafana I post daily blogs on Hashnode, push projects to GitHub, and stay active on LinkedIn and Twitter/X. Let’s connect, collaborate, and grow together 🚀 #100DaysOfDevOps #LearningInPublic #DevOps

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