Cisco ASA 5500 Series Configuration Guide using the CLI

Sep 26, 2026

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Cisco ASA 5500 Series Configuration Guide using the CLI (Software Version 8.3) provides objectives, audience guidance, and document conventions for configuring Cisco ASA security appliances. It outlines initial setup and general information, then expands into core capabilities such as firewall function overview, security policy and access lists, NAT, IP fragment protection, AAA for traffic, HTTP/HTTPS/FTP filtering, application inspection, QoS policies, connection limits, TCP normalization, and threat or botnet detection. It further covers VPN and security context concepts and management of feature licenses by model, compatibility, activation, failover, and limitations.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages1774

Reading Time74 h 30 min

AccessFree to download

About This Guide

Document Objectives

Audience

Related Documentation

Document Conventions

Obtaining Documentation, Obtaining Support, and Security Guidelines

Part 1 Getting Started and General Information

Chapter 1 Introduction to the Cisco ASA 5500 Series Adaptive Security Appliance

Chapter 2 Getting Started

Chapter 3 Managing Feature Licenses

Cisco ASA 5500 Series Configuration Guide using the CLI Software Version 8.3 Americas Headquarters Cisco Systems, Inc. 170 West Tasman Drive San Jose, CA 95134-1706 USA [http://www.cisco.com](http://www.cisco.com) [Tel: 408 526-4000](Tel: 408 526-4000) 800 553-NETS (6387) Fax: 408 527-0883 Customer Order Number: N/A, Online only Text Part Number: OL-20336-01 THE SPECIFICATIONS AND INFORMATION REGARDING THE PRODUCTS IN THIS MANUAL ARE SUBJECT TO CHANGE WITHOUT NOTICE. ALL STATEMENTS, INFORMATION, AND RECOMMENDATIONS IN THIS MANUAL ARE BELIEVED TO BE ACCURATE BUT ARE PRESENTED WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. USERS MUST TAKE FULL RESPONSIBILITY FOR THEIR APPLICATION OF ANY PRODUCTS. THE SOFTWARE LICENSE AND LIMITED WARRANTY FOR THE ACCOMPANYING PRODUCT ARE SET FORTH IN THE INFORMATION PACKET THAT SHIPPED WITH THE PRODUCT AND ARE INCORPORATED HEREIN BY THIS REFERENCE. IF YOU ARE UNABLE TO LOCATE THE SOFTWARE LICENSE OR LIMITED WARRANTY, CONTACT YOUR CISCO REPRESENTATIVE FOR A COPY. The Cisco implementation of TCP header compression is an adaptation of a program developed by the University of California, Berkeley (UCB) as part of UCB’s public domain version of the UNIX operating system. All rights reserved. Copyright © 1981, Regents of the University of California. NOTWITHSTANDING ANY OTHER WARRANTY HEREIN, ALL DOCUMENT FILES AND SOFTWARE OF THESE SUPPLIERS ARE PROVIDED “AS IS” WITH ALL FAULTS. CISCO AND THE ABOVE-NAMED SUPPLIERS DISCLAIM ALL WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION, THOSE OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OR ARISING FROM A COURSE OF DEALING, USAGE, OR TRADE PRACTICE. IN NO EVENT SHALL CISCO OR ITS SUPPLIERS BE LIABLE FOR ANY INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES, INCLUDING, WITHOUT LIMITATION, LOST PROFITS OR LOSS OR DAMAGE TO DATA ARISING OUT OF THE USE OR INABILITY TO USE THIS MANUAL, EVEN IF CISCO OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Cisco and the Cisco Logo are trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and other countries. A listing of Cisco's trademarks can be found at [www.cisco.com/go/trademarks](www.cisco.com/go/trademarks. Third party trademarks mentioned are)[. Third party trademarks mentioned are](www.cisco.com/go/trademarks. Third party trademarks mentioned are) the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1005R) Cisco ASA 5500 Series Configuration Guide using the CLI Copyright © 2010 Cisco Systems, Inc. All rights reserved. C O N T E N T S About This Guide lix Document Objectives lix Audience lix Related Documentation lx Document Conventions lx Obtaining Documentation, Obtaining Support, and Security Guidelines lx PA RT 1 Getting Started and General Information C HA PTER 1 Introduction to the Cisco ASA 5500 Series Adaptive Security Appliance 1-1 ASA 5500 Model Support 1-1 Module Support 1-1 VPN Specifications 1-2 New Features 1-2 New Features in Version 8 .3(2) 1-3 New Features in Version 8 .3(1) 1-5 Firewall Functional Overview 1-10 Security Policy Overview 1-11 Permitting or Denying Traffic with Access Lists 1-11 Applying NAT 1-11 Protecting from IP Fragments 1-12 Using AAA for Through Traffic 1-12 Applying [HTTP](HTTP), [HTTPS](HTTPS), or FTP Filtering 1-12 Applying Application Inspection 1-12 Sending Traffic to the Advanced Inspection and Prevention Security Services Module 1-12 Sending Traffic to the Content Security and Control Security Services Module 1-12 Applying QoS Policies 1-13 Applying Connection Limits and TCP Normalization 1-13 Enabling Threat Detection 1-13 Enabling the Botnet Traffic Filter 1-13 Configuring Cisco Unified Communications 1-13 Firewall Mode Overview 1-14 Stateful Inspection Overview 1-14 VPN Functional Overview 1-15 Cis

FAQs

Who is the guide intended for and what does it define up front?

The guide specifies document objectives and the intended audience, and it explains document conventions used throughout. It also includes security guidelines for obtaining documentation and support.

What configuration topics are covered in the introduction and overview chapters?

The guide covers firewall functional overview, security policy overview, permitting/denying traffic with access lists, NAT, IP fragment protection, AAA for through traffic, and multiple filtering and inspection capabilities such as HTTP/HTTPS/FTP filtering and application inspection.

How does the guide approach feature license management on the ASA 5500 series?

It describes supported feature licenses per model, license notes, VPN license and feature compatibility, preinstalled/permanent/time-based licensing, activation guidelines, how timers work, shared SSL VPN licensing, and requirements and behavior for failover and shared licenses.

Sep 26, 2026

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