How to Use Linux iptables for Advanced Network Firewall Rules

Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering · Jun 11, 2026 · 8m · transcript

In this episode of Linux Server Admin with Fexingo, Lucas and Luna dive into the practical art of iptables on Linux. They start with a real-world scenario: a misconfigured firewall that locked out a developer's SSH session. From there, they explore three specific iptables use cases that go beyond basic port blocking—rate-limiting inbound connections to prevent brute-force attacks, using connection tracking to allow established traffic while blocking new malicious packets, and setting up a simple but effective DMZ with NAT rules for a web server. Lucas explains the difference between iptables…