well-known-security/safelist.md

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Markdown

### Refined General Structure
#### Hierarchical Approach
1. **Manufacturer Level**:
- Contains general policies and information applicable to all devices from that manufacturer.
- Includes a `safelist-ips.json` and `security-contact.json` relevant to the entire range of products.
2. **Device-Specific Level**:
- Provides detailed, device-specific instructions and information.
- Contains its own `safelist-ips.json`, `security-contact.json`, and `firewall-profile.json`.
- Device-specific information overrides manufacturer-level information when present.
#### Example Structure
```plaintext
/.well-known/device-instructions
/{manufacturer}
/safelist-ips.json # Manufacturer-level IP safelist
/security-contact.json # Manufacturer-level security contact
/{device-model}
/instructions.json # Specific device instructions
/firewall-profile.json # Device-specific firewall profile
/safelist-ips.json # Device-specific IP safelist
/security-contact.json # Device-specific security contact
```
#### Precedence Rules
- **Device-Specific Over Manufacturer-Level**: Routers and other network management tools should prioritize device-specific instructions and settings. If a device-specific `safelist-ips.json` or `security-contact.json` exists, it should override the manufacturer-level files.
#### Goals for Hierarchical Safelist and Contacts
- **Flexibility and Specificity**: Allow for both broad policies applicable across all devices and specific configurations tailored to individual models.
- **Clarity in Implementation**: Ensure that device-specific precedence over manufacturer-level information is clear and easy to implement in network management systems.
- **Enhanced Security and Compatibility**: Provide more precise security and operational guidelines, enhancing each device's security posture and operating compatibility.
#### Additional Considerations
- **Documentation and Communication**: Document the hierarchy and precedence rules, ensuring manufacturers and network administrators understand how to implement and interpret these files.
- **Update Mechanisms**: Establish efficient processes for updating manufacturer-level and device-specific files to keep them current and relevant.
- **Testing and Validation**: Rigorously test the hierarchical structure to ensure routers and network tools correctly apply the precedence rules in various scenarios.
With this refined structure, you can create a robust framework for disseminating device and manufacturer-specific firewall profiles, IP safelists, and security contacts, greatly enhancing networked devices' security and operational efficiency.