Firewalld Explained in 5 Minutes | Linux Firewall Basics (Hands-On Demo)
In this video, you’ll learn the basics of firewalld in Linux and how to secure a server using essential firewall-cmd commands.
Even if your environment already uses a hardware firewall (such as FortiGate), enabling the Linux OS firewall adds an important defense-in-depth layer at the host level.
This hands-on demo covers:
Installing and starting firewalld
Opening and closing ports
Allowing services (HTTP, etc.)
Verifying firewall rules
This tutorial is ideal for Linux system administrators, DevOps engineers, and beginners working with AlmaLinux, CentOS, RHEL, Fedora, or similar distributions.
📌 All commands used in this video are shared in the pinned comment.
#linux #firewall #linuxsecurity #sysadmin #cybersecurity #serversecurity
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