Bash Script for Managing iptables Rules

This Bash script allows users to easily manage iptables rules on a Linux system. It prompts users to set default policies, handle traffic from specific IP addresses, and specify which connection types and ports to allow. The script provides a simple and interactive way to configure iptables firewall rules.

Usage

1. Clone or download the script to your Linux system.
2. Make the script executable:

   chmod +x iptables-configuration.sh

3. Run the script as root:

   sudo ./iptables-configuration.sh

4. Follow the prompts to set default policies, handle traffic from specific IP addresses, and specify allowed connection types and ports.

Features

• Set default input policy (ACCEPT/DROP).
• Set loopback traffic policy (ACCEPT/DROP).
• Handle traffic from a specific IP address (ACCEPT/DROP).
• Specify allowed connection types (TCP/UDP/ALL).
• Specify ports or port ranges to allow.

Requirements

• Linux operating system.
• Bash shell.

Examples

Example 1: Allow HTTP and HTTPS traffic

./iptables-configuration.sh

Set default input policy: ACCEPT
Set loopback traffic policy: ACCEPT
Handle traffic from a specific IP: no
Specify connection types: TCP
Specify ports or port ranges to allow: 80 443

Example 2: Allow SSH traffic from a specific IP address

./iptables-configuration.sh

Set default input policy: DROP
Set loopback traffic policy: ACCEPT
Handle traffic from a specific IP: yes
Enter the IP address: 192.168.1.100
Do you want to accept or drop traffic from this IP? (ACCEPT/DROP): ACCEPT
Specify connection types: TCP
Specify ports or port ranges to allow: 22

Example 3: Allow all traffic from a specific IP address

./iptables-configuration.sh

Set default input policy: DROP
Set loopback traffic policy: ACCEPT
Handle traffic from a specific IP: yes
Enter the IP address: 192.168.1.100
Do you want to accept or drop traffic from this IP? (ACCEPT/DROP): ACCEPT
Specify connection types: ALL
Specify ports or port ranges to allow: 

Troubleshooting

If you encounter any issues or errors while using iptables-configuration, feel free to join our Discord server for assistance: Join Discord Server

Contact Information

• Email : halildeniz313@gmail.com
• Linkedin : https://www.linkedin.com/in/halil-ibrahim-deniz
• Instagram: https://www.instagram.com/deniz.halil333/
• Discord : https://discord.gg/nGBpfMHX4u
• Mysite : https://denizhalil.com

License

This project is licensed under the MIT License - see the LICENSE file for details.