How to Use iptables in Linux

The command iptables enables administrators to configure the IP packet filter rules of the Linux kernel firewall. It is essentially a tool that controls the network traffic in a system by determining what packets of data get to stay, where they are directed, and which ones are not allowed.
With iptables, you can define filters and rules based on IP addresses, protocols (such as TCP, UDP), ports, or a combination of these.So, typically, iptables is used for establishing, managing, and enforcing