How to Use Linux Server Iptables for Advanced Packet Filtering

In this episode of Linux Server Admin with Fexingo, Lucas and Luna dive into iptables — the classic packet filtering framework still essential for sysadmins managing Linux servers. They walk through real-world examples: setting up rules to allow SSH while blocking brute-force attempts, creating stateful firewall policies, and logging dropped packets for troubleshooting. Lucas explains the difference between chains, tables, and matches, and shares a minimal iptables script that secures a basic web server. Luna asks why iptables remains relevant alongside nftables, and they discuss migration strategies. Perfect for sysadmins who need practical iptables skills today.

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