An organization has a Cisco FTD that uses bridge groups to pass traffic from the inside interfaces to the outside interfaces. They are unable to gather information about neighboring Cisco devices or use multicast in their environment. What must be done to resolve this issue?
A. Create a firewall rule to allow CDP traffic
B. Create a bridge group with the firewall interfaces
C. Change the firewall mode to transparent
D. Change the firewall mode to routed
I would go with answer C:
In routed firewall mode, broadcast and multicast traffic is blocked even if you allow it in an access rule