The configuration commands for firewall will be more specific to AOS than to the specific hardware. The huge big picture is here: AOS Version R10.9 Command Reference Guide
This will vary slightly depending on the firmware you are running on the device. Perhaps if you post your existing configuration and exactly wat you're trying to accomplish it would make it easier to advise as to the specifics.
- You may find the following guide helpful: Understanding the Firewall Menu in the AOS Web Interface
Also, if you would like to post your configuration (remember to remove all sensitive information), I would be more than happy to review it for you. It is important to remember that if an interface has a security zone assigned to it, only traffic specified to be allowed or NATted through will be allowed through that interface.
Please do not hesitate to let us know if you have any further questions.