Iptables is a built-in command-line utility that performs packet filtering functionalities using the Linux Kernel Netfilter firewall framework. It controls incoming and outgoing network traffic by matching network packets with available chain rules on the server. Iptables uses a hierarchical rule execution format which includes tables, chains, and rules to filter network traffic on the server. This article explains how to set up firewall policies using iptables on a Vultr Cloud Server. You will ......