Cisco Security Appliance Command Line Configuration Guide, Version 7.0
About This Guide
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About This Guide

Table Of Contents

About This Guide

Document Objectives


Related Documentation

Document Organization

Document Conventions

Obtaining Documentation and Submitting a Service Request

About This Guide

This preface introduce the Cisco Security Appliance Command Line Configuration Guide, and includes the following sections:

Document Objectives

Obtaining Documentation and Submitting a Service Request

Document Objectives

The purpose of this guide is to help you configure the security appliance 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 security appliance by using 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. For more information, see the following URL:

This guide applies to the Cisco PIX 500 series security appliances (PIX 515E, PIX 525, and PIX 535) and the Cisco ASA 5500 series security appliances (ASA 5510, ASA 5520, and ASA 5540). Throughout this guide, the term "security appliance" applies generically to all supported models, unless specified otherwise. The PIX 501, PIX 506E, and PIX 520 security appliances are not supported in software Version 7.0.


This guide is for network managers who perform any of the following tasks:

Manage network security

Install and configure firewalls/security appliances

Configure VPNs

Configure intrusion detection software

Related Documentation

For more information, refer to the following documentation:

Cisco PIX Security Appliance Release Notes

Cisco ASDM Release Notes

Cisco PIX 515E Quick Start Guide

Guide for Cisco PIX 6.2 and 6.3 Users Upgrading to Cisco PIX Software Version 7.0

Cisco Security Appliance Command Reference

Cisco ASA 5500 Series Quick Start Guide

Cisco ASA 5500 Series Release Notes

Cisco Security Appliance Logging Configuration and System Log Messages

Document Organization

This guide includes the chapters and appendixes described in Table 1.

Table 1 Document Organization 

Part 1: Getting Started and General Information

Chapter 1, "Introduction to the Security Appliance"

Provides a high-level overview of the security appliance.

Chapter 2, "Getting Started"

Describes how to access the command-line interface, configure the firewall mode, and work with the configuration.

Chapter 3, "Enabling Multiple Context Mode"

Describes how to use security contexts and enable multiple context mode.

Chapter 4, "Configuring Ethernet Settings and Subinterfaces"

Describes how to configure Ethernet settings for physical interfaces and add subinterfaces.

Chapter 5, "Adding and Managing Security Contexts"

Describes how to configure multiple security contexts on the security appliance.

Chapter 6, "Configuring Interface Parameters"

Describes how to configure each interface and subinterface for a name, security, level, and IP address.

Chapter 7, "Configuring Basic Settings"

Describes how to configure basic settings that are typically required for a functioning configuration.

Chapter 8, "Configuring IP Routing and DHCP Services"

Describes how to configure IP routing and DHCP.

Chapter 9, "Configuring IPv6"

Describes how to enable and configure IPv6.

Chapter 10, "Configuring AAA Servers and the Local Database"

Describes how to configure AAA servers and the local database.

Chapter 11, "Configuring Failover"

Describes the failover feature, which lets you configure two security appliances so that one will take over operation if the other one fails.

Part 2: Configuring the Firewall

Chapter 12, "Firewall Mode Overview"

Describes in detail the two operation modes of the security appliance, routed and transparent mode, and how data is handled differently with each mode.

Chapter 13, "Identifying Traffic with Access Lists"

Describes how to identify traffic with access lists.

Chapter 14, "Applying NAT"

Describes how address translation is performed.

Chapter 15, "Permitting or Denying Network Access"

Describes how to control network access through the security appliance using access lists.

Chapter 16, "Applying AAA for Network Access"

Describes how to enable AAA for network access.

Chapter 17, "Applying Filtering Services"

Describes ways to filter web traffic to reduce security risks or prevent inappropriate use.

Chapter 18, "Using Modular Policy Framework"

Describes how to use the Modular Policy Framework to create security policies for TCP, general connection settings, inspection, and QoS.

Chapter 19, "Intercepting and Responding to Network Attacks"

Describes how to configure protection features to intercept and respond to network attacks.

Chapter 20, "Applying QoS Policies"

Describes how to configure the network to provide better service to selected network traffic over various technologies, including Frame Relay, Asynchronous Transfer Mode (ATM), Ethernet and 802.1 networks, SONET, and IP routed networks.

Chapter 21, "Applying Application Layer Protocol Inspection"

Describes how to use and configure application inspection.

Chapter 22, "Configuring ARP Inspection and Bridging Parameters"

Describes how to enable ARP inspection and how to customize bridging operations.

Part 3: Configuring VPN

Chapter 23, "Configuring IPSec and ISAKMP"

Describes how to configure ISAKMP and IPSec tunneling to build and manage VPN "tunnels," or secure connections between remote users and a private corporate network.

Chapter 24, "Setting General VPN Parameters"

Describes miscellaneous VPN configuration procedures.

Chapter 25, "Configuring Tunnel Groups, Group Policies, and Users"

Describes how to configure VPN tunnel groups, group policies, and users.

Chapter 26, "Configuring IP Addresses for VPNs"

Describes how to configure IP addresses in your private network addressing scheme, which let the client function as a tunnel endpoint.

Chapter 27, "Configuring Remote Access VPNs"

Describes how to configure a remote access VPN connection.

Chapter 28, "Configuring LAN-to-LAN VPNs"

Describes how to build a LAN-to-LAN VPN connection.

Chapter 29, "Configuring WebVPN"

Describes how to establish a secure, remote-access VPN tunnel to a security appliance using a web browser.

Chapter 30, "Configuring Certificates"

Describes how to configure a digital certificates, which contains information that identifies a user or device. Such information can include a name, serial number, company, department, or IP address. A digital certificate also contains a copy of the public key for the user or device.

Part 4: System Administration

Chapter 31, "Managing System Access"

Describes how to access the security appliance for system management through Telnet, SSH, and HTTPS.

Chapter 32, "Managing Software, Licenses, and Configurations"

Describes how to enter license keys and download software and configurations files.

Chapter 33, "Monitoring and Troubleshooting"

Describes how to monitor and troubleshoot the security appliance.

Appendix A, "Feature Licenses and Specifications"

Describes the feature licenses and specifications.

Appendix B, "Sample Configurations"

Describes a number of common ways to implement the security appliance.

Appendix C, "Using the Command-Line Interface"

Describes how to use the CLI to configure the the security appliance.

Appendix D, "Addresses, Protocols, and Ports"

Provides a quick reference for IP addresses, protocols, and applications.

Document Conventions

Command descriptions use these conventions:

Braces ({ }) indicate a required choice.

Square brackets ([ ]) indicate optional elements.

Vertical bars ( | ) separate alternative, mutually exclusive elements.

Boldface indicates commands and keywords that are entered literally as shown.

Italics indicate arguments for which you supply values.

Examples use these conventions:

Examples depict screen displays and the command line in screen font.

Information you need to enter in examples is shown in boldface screen font.

Variables for which you must supply a value are shown in italic screen font.

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

Obtaining Documentation and Submitting a Service Request

For information on obtaining documentation, submitting a service request, and gathering additional information, see the monthly What's New in Cisco Product Documentation, which also lists all new and revised Cisco technical documentation, at:

Subscribe to the What's New in Cisco Product Documentation as a Really Simple Syndication (RSS) feed and set content to be delivered directly to your desktop using a reader application. The RSS feeds are a free service and Cisco currently supports RSS Version 2.0.