Chapter 9Firepower Deployment in Transparent Mode

FTD Transparent Mode allows you to control your network traffic like a firewall, while the FTD device stays invisible to the hosts in your network. This chapter discusses the configuration of FTD Transparent Mode.

Transparent Mode Essentials

In Transparent Mode, FTD bridges the inside and outside interfaces into a single Layer 2 network and remains transparent to the hosts. When FTD is in Transparent Mode, the FMC does not allow you to assign an IPv4 address to a directly connected interface. As a result, the hosts are unable to communicate with any connected interfaces. Unlike with Routed Mode, you cannot configure the connected interfaces as the default gateway for the hosts.

You can, however, ...

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