Can be changed during initial
configuration?DefaultSetting
Yes.IPv4: Obtained through DHCP from
Internet Service Provider (ISP) or upstream
router.
IPv6: Autoconfiguration.
Firepower 4100/9300: Data interfaces are
not pre-configured.
ISA 3000: BVI1 IP address is not
preconfigured. BVI1 includes all inside and
outside interfaces.
Outside interface IP address.
Default Interfaces by Device Model
You cannot select different inside and outside interfaces during initial configuration. To change the interface
assignments after configuration, edit the interface and DHCP settings. You must remove an interface from
the bridge group before you can configure it as a non-switched interface.
Inside InterfaceOutside InterfaceFTD device
VLAN1, which includes all other switch
ports except the outside interface, which is
a physical firewall interface.
Ethernet1/1Firepower 1010
Ethernet1/2Ethernet1/1Firepower 1120, 1140, 1150
Ethernet1/2Ethernet1/1Firepower 2100 series
Ethernet1/2Ethernet1/1Secure Firewall 3100 series
Data interfaces are not pre-configured.Data interfaces are not pre-configured.Firepower 4100 series
Data interfaces are not pre-configured.Data interfaces are not pre-configured.Firepower 9300 appliance
GigabitEthernet0/1GigabitEthernet0/0FTDv
GigabitEthernet1/2 and GigabitEthernet1/4GigabitEthernet1/1 and GigabitEthernet1/3
GigabitEthernet1/1 (outside1) and 1/2
(inside1), and GigabitEthernet1/3 (outside2)
and 1/4 (inside2) (non-fiber models only)
are configured as Hardware Bypass pairs.
All inside and outside interfaces are part of
BVI1.
ISA 3000
Getting Started
28
Getting Started
Default Configuration Prior to Initial Setup