> Firewall -- This function only processes forwarded packets, and does not process packets sent to the device itself.
> Note: Only one level rule can take effect at a time
> Note: If you need to create a level instance, you must first create a chain

> Enabled

> Level

> Name | Chain Name | DefaultPolicy | Enable | Remove

> Chain - Rule

> Chain Name | Source Interface | Dest Interface | Ip Version | SourceIP | DestIP | SourceIP(v6) | DestIP(v6) | Protocol | Source Port | Source Port Range Max | Dest Port | Dest Port Range Max | Action | Enable | Remove