About This Guide

The following topics explain how to use this guide.

Document Objectives

The purpose of this guide is to help you configure the firewall features for the ASA series using the command-line interface. This guide does not cover every feature, but describes only the most common configuration scenarios.

You can also configure and monitor the ASA by using the Adaptive Security Device Manager (ASDM), a web-based GUI application. ASDM includes configuration wizards to guide you through some common configuration scenarios, and online help for less common scenarios.

Throughout this guide, the term “ASA” applies generically to supported models, unless specified otherwise.

Document Conventions

This document adheres to the following text, display, and alert conventions.

Text Conventions

Convention

Indication

boldface

Commands, keywords, button labels, field names, and user-entered text appear in boldface . For menu-based commands, the full path to the command is shown.

italic

Variables, for which you supply values, are presented in an italic typeface.

Italic type is also used for document titles, and for general emphasis.

monospace

Terminal sessions and information that the system displays appear in monospace type.

{x | y | z}

Required alternative keywords are grouped in braces and separated by vertical bars.

[ ]

Elements in square brackets are optional.

[x | y | z]

Optional alternative keywords are grouped in square brackets and separated by vertical bars.

[ ]

Default responses to system prompts are also in square brackets.

< >

Non-printing characters such as passwords are in angle brackets.

!, #

An exclamation point (!) or a number sign (#) at the beginning of a line of code indicates a comment line.

Reader Alerts

This document uses the following for reader alerts:


Note

Means reader take note. Notes contain helpful suggestions or references to material not covered in the manual.


Tip

Means the following information will help you solve a problem.


Caution

Means reader be careful. In this situation, you might do something that could result in equipment damage or loss of data.


Timesaver

Means the described action saves time. You can save time by performing the action described in the paragraph.


Warning

Means reader be warned. In this situation, you might perform an action that could result in bodily injury.

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