After you identify how you want to segment
your network and the zones you will need to create to achieve the
segmentation (as well as the interfaces to map to each zone), you
can begin configuring the interfaces and zones on the firewall.
Configure
Interfaces on the firewall the to support the topology of
each part of the network you are connecting to. The following workflow
shows how to configure Layer 3 interfaces and assign them to zones.
For details on integrating the firewall using a different type of
interface deployments (for example as
Virtual
Wire Interfaces or as
Layer
2 Interfaces), see
Networking.
The firewall comes preconfigured with a
default virtual wire interface between ports Ethernet 1/1 and Ethernet
1/2 (and a corresponding default security policy and virtual router).
If you do not plan to use the default virtual wire, you must manually
delete the configuration and commit the change before proceeding
to prevent it from interfering with other settings you define. For
instructions on how to delete the default virtual wire and its associated
security policy and zones, see Step 3 in
Set Up Network
Access for External Services.