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How to Secure a Linux Firewall With IPTables Rules
Server hacking and unauthorized access are genuine threats. These reasons are why you should implement a firewall as part of your overall network security strategy. Configuring a firewall with iptables rules is one way to mitigate such risks on Linux systems.
Lucky for you, this tutorial will teach you how to implement a firewall with basic iptables rules configuration that you can then customize based on your requirements. Ready to get your hands dirty? Time to dive in!
This tutorial houses hands-on demonstrations. If you’d like to follow along, be sure you have an Linux server or desktop computer. This tutorial uses Ubuntu 14.04 for the examples but should work with other Linux distros and newer Ubuntu versions.