Routing: One of the primary functions of an edge device is its ability to route packets from one network location to another.
Static Routing: While routing is often considered a basic function of a device such as the firewall, there of numerous options for routing within the device. There are simple static routes that only look at the destination address of the traffic. These are often used internally to control traffic flow within a network.
Example: If we had a private network not connected directly to an interface on the firewall, then the Firewall would have no way of determining where to send traffic destined to for that network.
PBR (Policy Base routing): The firewall also offers policy based routing which allows the device to dig deeper into the traffic and make more intelligent decisions based on factors other than just the destination, such as the source address or services.
Dynamic routing: Dynamic routing protocols are also supported to allow the firewall to communicate with neighbors and populate it’s internal routing tables with minimal administrator interaction.