In a Layer 3 deployment, the firewall routes traffic between multiple ports. This deployment requires that you assign an IP address to each interface and configure
to route the traffic. Choose this option when routing is required.
You can configure the firewall interface to act as a DHCP client and receive a dynamically assigned IP address. The firewall also provides the capability to propagate settings received by the DHCP client interface into a DHCP server operating on the firewall. This is most commonly used to propagate DNS server settings from an ISP to client machines operating on the network protected by the firewall.
For more information, see