Feature history for firewall mode – Cisco ASA 5505 User Manual

Page 181

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4-9

Cisco ASA 5500 Series Configuration Guide using the CLI

Chapter 4 Configuring the Transparent or Routed Firewall

Configuring ARP Inspection for the Transparent Firewall

Detailed Steps

Feature History for Firewall Mode

Table 4-2

lists the release history for each feature change and the platform release in which it was

implemented.

Configuring ARP Inspection for the Transparent Firewall

This section describes ARP inspection and how to enable it and includes the following topics:

Information About ARP Inspection, page 4-10

Licensing Requirements for ARP Inspection, page 4-10

Default Settings, page 4-10

Guidelines and Limitations, page 4-10

Configuring ARP Inspection, page 4-11

Monitoring ARP Inspection, page 4-12

Feature History for ARP Inspection, page 4-13

Command

Purpose

firewall transparent

Example:

hostname(config)# firewall transparent

Sets the firewall mode to transparent. To change the mode to routed, enter
the no firewall transparent command.

Note

You are not prompted to confirm the firewall mode change; the
change occurs immediately.

Table 4-2

Feature History for Firewall Mode

Feature Name

Releases

Feature Information

Transparent firewall mode

7.0(1)

A transparent firewall is a Layer 2 firewall that acts like a
“bump in the wire,” or a “stealth firewall,” and is not seen as
a router hop to connected devices.

We introduced the following commands: firewall
transparent
, show firewall.

Transparent firewall bridge groups

8.4(1)

Multiple bridge groups are now allowed in transparent
firewall mode. Also, you can now configure up to four
interfaces (per bridge group); formerly, you could only
configure two interfaces in transparent mode.

We introduced the following commands: firewall
transparent
, show firewall.

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