Planning for packet rules
Before you connect any of your network resources to the Internet, you need to develop a security plan and understand the potential security risks involved.
In general, you must gather detailed information about how you plan to use the Internet as well as a document that describes your internal network configuration. Based on the results of gathering this information, you can accurately evaluate your security needs. Planning and setting up system security provides you with the details you need to create a network security plan.
After you develop a plan, you can begin to configure your packet rules.