Configuring Physical Interfaces: This section discusses Cisco ASA interfaces that can be connected to a network through physical cabling, as well as the parameters that determine how the interfaces will operate.
Configuring VLAN Interfaces: This section covers logical interfaces that can be used to connect an ASA to VLANs over a trunk link.
Configuring Interface Security Parameters: This section explains the parameters you can set to assign a name, an IP address, and a security level to an ASA interface.
Configuring the Interface MTU: This section discusses the maximum transmission unit size and how it can be adjusted to set the largest possible Ethernet frame that can be transmitted on an Ethernet-based ASA interface.
Verifying Interface Operation: This section covers the commands you can use to display information about ASA interfaces and confirm whether they are operating as expected.
A Cisco ASA must be configured with enough information to begin accepting and forwarding traffic before it can begin doing its job of securing networks. Each of its interfaces must be configured to interoperate with other network equipment and to participate in the IP protocol suite. This chapter discusses each of these topics in detail.
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