# Firewall Plan for Yii3 SatisfyManager

## Goal
Implement a firewall layer in the Yii3 SatisfyManager module to restrict access based on allowed IP addresses.

## Steps

1. **Design Firewall Middleware/Component**
   - Create a Firewall class or middleware.
   - Accept a list of allowed IPs (configurable).

2. **Integrate with Yii3 Application**
   - Register firewall middleware in application config.
   - Apply to all or selected routes/controllers.

3. **Configuration**
   - Store allowed IPs in a config file or environment variable.
   - Provide admin UI for managing allowed IPs (optional).

4. **Logging & Feedback**
   - Log blocked access attempts.
   - Return HTTP 403 Forbidden for denied IPs.

5. **Testing**
   - Unit tests for firewall logic.
   - Functional tests for access control.

## Checklist
- [ ] Design Firewall middleware/component
- [ ] Integrate with Yii3 application
- [ ] Add configuration for allowed IPs
- [ ] Add admin UI for IP management (optional)
- [ ] Implement logging and feedback
- [ ] Add tests

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Follow this plan step-by-step and mark each item complete as you progress.
