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Firewall Configuration Checklist
Initial Setup and Configuration
Define the firewall's role within the network architecture.
Ensure the firewall's firmware is up to date.
Change the default administrator password.
Set up management interfaces securely.
Backup the initial configuration.
Access Control Policies
Define and implement inbound and outbound access rules.
Restrict administrative access to specific IP addresses.
Enable logging for all access control events.
Review and update firewall rules regularly.
Apply least privilege principle for access permissions.
Network Segmentation
Create separate zones for different types of network traffic.
Assign VLANs for each network segment.
Implement inter-zone policies based on security requirements.
Monitor and log traffic between network segments.
Regularly review and update segmentation rules.
Monitoring and Logging
Enable detailed logging for all firewall activities.
Set up alerts for critical events and threshold breaches.
Regularly review logs for unusual or suspicious activity.
Integrate firewall logs with a centralized logging system.
Ensure logs are retained according to compliance requirements.
Maintenance and Updates
Schedule regular firmware and software updates.
Perform routine configuration backups.
Test the firewall configuration in a staging environment before deployment.
Regularly audit firewall rules and configurations.
Document all changes and updates to the firewall settings.
