Cisco Firepower 2100 Getting Started Manual page 121

ASA Platform Mode Deployment with ASDM and Firepower Chassis Manager
If you connect the outside interface directly to a cable modem or DSL modem, we recommend that you put
the modem into bridge mode so the ASA performs all routing and NAT for your inside networks. If you need
to configure PPPoE for the outside interface to connect to your ISP, you can do so as part of the ASDM Startup
Wizard.
Note
If you cannot use the default FXOS and ASA Management IP addresses, see
and ASA Management IP Addresses or Gateway, on page
If you need to change the inside IP address, you can do so using the ASDM Startup Wizard. For example,
you may need to change the inside IP address in the following circumstances:
• If the outside interface tries to obtain an IP address on the 192.168.1.0 network, which is a common
• If you add the ASA to an existing inside network, you will need to change the inside IP address to be on
Figure 31: Firepower 2100 in Your Network
Firepower 2100 Platform Mode Default Configuration
You can set the Firepower 2100 to run in Platform mode; Appliance mode is the default.
default network, the DHCP lease will fail, and the outside interface will not obtain an IP address. This
problem occurs because the ASA cannot have two interfaces on the same network. In this case you must
change the inside IP address to be on a new network.
the existing network.
Firepower 2100 Platform Mode Default Configuration
(Optional) Change the FXOS
125.
Cisco Firepower 2100 Getting Started Guide
119