Examples and Output
Let’s explore some detailed examples of flushing iptables and observe the expected output:
Example 1: Flushing iptables rules
$ sudo iptables -F
$ sudo iptables -X
$ sudo iptables -P INPUT ACCEPT
$ sudo iptables -P OUTPUT ACCEPT
$ sudo iptables -P FORWARD ACCEPT
In this example, running these commands will yield no output, indicating that the rules have been successfully flushed.
Example 2: Verifying iptables status
$ sudo iptables -L
After flushing iptables, executing iptables -L will display an empty list of rules. This signifies that no rules are currently in place, ensuring that all traffic will be allowed.
How to Flush the Iptables and Clear the Firewall Rules
Iptables is a robust and versatile tool for managing firewall rules on a Linux system. However, beginners may find it challenging to work with. This article is designed to help newcomers understand the process of flushing iptables and clearing all firewall rules on a Linux system in greater detail, offering step-by-step guidance and practical examples with code and output.