Table Of Contents

About This Guide

Document Objectives

Audience

Related Documentation

Document Organization

Document Conventions

Obtaining Documentation

Cisco.com

Ordering Documentation

Documentation Feedback

Obtaining Technical Assistance

Cisco Technical Support Website

Submitting a Service Request

Definitions of Service Request Severity

Obtaining Additional Publications and Information

About This Guide

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

•Document Objectives

•Obtaining Documentation

•Documentation Feedback

•Obtaining Technical Assistance

•Obtaining Additional Publications and Information

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: http://www.cisco.com/univercd/cc/td/doc/product/netsec/secmgmt/asdm/index.htm

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.

Audience

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

•Migrating to ASA for VPN 3000 Series Concentrator Administrators

•Cisco Security Appliance Command Reference

•Cisco ASA 5500 Series Adaptive Security Appliance Getting Started Guide

•Cisco ASA 5500 Series Release Notes

•Cisco Security Appliance Logging Configuration and System Log Messages

•Cisco Secure Desktop Configuration Guide for Cisco ASA 5500 Series Administrators

Document Organization

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

Table 1 Document Organization 

Chapter/Appendix	Definition
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, "Managing the AIP SSM and CSC SSM"	Describes how to configure the security appliance to send traffic to an AIP SSM or a CSC SSM, how to check the status of an SSM, and how to update the software image on an intelligent SSM.
Chapter 20, "Preventing Network Attacks"	Describes how to configure protection features to intercept and respond to network attacks.
Chapter 21, "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 22, "Configuring Application Layer Protocol Inspection"	Describes how to use and configure application inspection.
Chapter 23, "Configuring ARP Inspection and Bridging Parameters"	Describes how to enable ARP inspection and how to customize bridging operations.
Part 3: Configuring VPN
Chapter 24, "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 25, "Setting General IPSec VPN Parameters"	Describes miscellaneous VPN configuration procedures.
Chapter 26, "Configuring Tunnel Groups, Group Policies, and Users"	Describes how to configure VPN tunnel groups, group policies, and users.
Chapter 27, "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 28, "Configuring Remote Access IPSec VPNs"	Describes how to configure a remote access VPN connection.
Chapter 29, "Configuring LAN-to-LAN IPSec VPNs"	Describes how to build a LAN-to-LAN VPN connection.
Chapter 30, "Configuring WebVPN"	Describes how to establish a secure, remote-access VPN tunnel to a security appliance using a web browser.
Chapter 31, "Configuring SSL VPN Client"	Describes how to install and configure the SSL VPN Client.
Chapter 32, "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 33, "Managing System Access"	Describes how to access the security appliance for system management through Telnet, SSH, and HTTPS.
Chapter 34, "Managing Software, Licenses, and Configurations"	Describes how to enter license keys and download software and configurations files.
Chapter 35, "Monitoring the Security Appliance"	Describes how to monitor the security appliance.
Chapter 36, "Troubleshooting the Security Appliance"	Describes how to troubleshoot the security appliance.
Part 4: Reference
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.
Appendix E, "Configuring an External Server for Authorization and Authentication"	Provides information about configuring LDAP and RADIUS authorization servers.

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.

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

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Obtaining Documentation

Cisco documentation and additional literature are available on Cisco.com. Cisco also provides several ways to obtain technical assistance and other technical resources. These sections explain how to obtain technical information from Cisco Systems.

Cisco.com

You can access the most current Cisco documentation at this URL:

http://www.cisco.com/univercd/home/home.htm

You can access the Cisco website at this URL:

http://www.cisco.com

You can access international Cisco websites at this URL:

http://www.cisco.com/public/countries_languages.shtml

Ordering Documentation

You can find instructions for ordering documentation at this URL:

http://www.cisco.com/univercd/cc/td/doc/es_inpck/pdi.htm

You can order Cisco documentation in these ways:

•Registered Cisco.com users (Cisco direct customers) can order Cisco product documentation from the Ordering tool:

http://www.cisco.com/en/US/partner/ordering/index.shtml

•Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco Systems Corporate Headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 1 800 553-NETS (6387).

Documentation Feedback

You can send comments about technical documentation to bug-doc@cisco.com.

You can submit comments by using the response card (if present) behind the front cover of your document or by writing to the following address:

Cisco Systems
Attn: Customer Document Ordering
170 West Tasman Drive
San Jose, CA 95134-9883

We appreciate your comments.

Obtaining Technical Assistance

For all customers, partners, resellers, and distributors who hold valid Cisco service contracts, Cisco Technical Support provides 24-hour-a-day, award-winning technical assistance. The Cisco Technical Support Website on Cisco.com features extensive online support resources. In addition, Cisco Technical Assistance Center (TAC) engineers provide telephone support. If you do not hold a valid Cisco service contract, contact your reseller.

Cisco Technical Support Website

The Cisco Technical Support Website provides online documents and tools for troubleshooting and resolving technical issues with Cisco products and technologies. The website is available 24 hours a day, 365 days a year, at this URL:

http://www.cisco.com/techsupport

Access to all tools on the Cisco Technical Support Website requires a Cisco.com user ID and password. If you have a valid service contract but do not have a user ID or password, you can register at this URL:

http://tools.cisco.com/RPF/register/register.do

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Note Use the Cisco Product Identification (CPI) tool to locate your product serial number before submitting a web or phone request for service. You can access the CPI tool from the Cisco Technical Support Website by clicking the Tools & Resources link under Documentation & Tools. Choose Cisco Product Identification Tool from the Alphabetical Index drop-down list, or click the Cisco Product Identification Tool link under Alerts & RMAs. The CPI tool offers three search options: by product ID or model name; by tree view; or for certain products, by copying and pasting show command output. Search results show an illustration of your product with the serial number label location highlighted. Locate the serial number label on your product and record the information before placing a service call.

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Submitting a Service Request

Using the online TAC Service Request Tool is the fastest way to open S3 and S4 service requests. (S3 and S4 service requests are those in which your network is minimally impaired or for which you require product information.) After you describe your situation, the TAC Service Request Tool provides recommended solutions. If your issue is not resolved using the recommended resources, your service request is assigned to a Cisco TAC engineer. The TAC Service Request Tool is located at this URL:

http://www.cisco.com/techsupport/servicerequest

For S1 or S2 service requests or if you do not have Internet access, contact the Cisco TAC by telephone. (S1 or S2 service requests are those in which your production network is down or severely degraded.) Cisco TAC engineers are assigned immediately to S1 and S2 service requests to help keep your business operations running smoothly.

To open a service request by telephone, use one of the following numbers:

Asia-Pacific: +61 2 8446 7411 (Australia: 1 800 805 227)
EMEA: +32 2 704 55 55
USA: 1 800 553-2447

For a complete list of Cisco TAC contacts, go to this URL:

http://www.cisco.com/techsupport/contacts

Definitions of Service Request Severity

To ensure that all service requests are reported in a standard format, Cisco has established severity definitions.

Severity 1 (S1)—Your network is "down," or there is a critical impact to your business operations. You and Cisco will commit all necessary resources around the clock to resolve the situation.

Severity 2 (S2)—Operation of an existing network is severely degraded, or significant aspects of your business operation are negatively affected by inadequate performance of Cisco products. You and Cisco will commit full-time resources during normal business hours to resolve the situation.

Severity 3 (S3)—Operational performance of your network is impaired, but most business operations remain functional. You and Cisco will commit resources during normal business hours to restore service to satisfactory levels.

Severity 4 (S4)—You require information or assistance with Cisco product capabilities, installation, or configuration. There is little or no effect on your business operations.

Obtaining Additional Publications and Information

Information about Cisco products, technologies, and network solutions is available from various online and printed sources.

•Cisco Marketplace provides a variety of Cisco books, reference guides, and logo merchandise. Visit Cisco Marketplace, the company store, at this URL:

http://www.cisco.com/go/marketplace/

•The Cisco Product Catalog describes the networking products offered by Cisco Systems, as well as ordering and customer support services. Access the Cisco Product Catalog at this URL:

http://cisco.com/univercd/cc/td/doc/pcat/

•Cisco Press publishes a wide range of general networking, training and certification titles. Both new and experienced users will benefit from these publications. For current Cisco Press titles and other information, go to Cisco Press at this URL:

http://www.ciscopress.com

•Packet magazine is the Cisco Systems technical user magazine for maximizing Internet and networking investments. Each quarter, Packet delivers coverage of the latest industry trends, technology breakthroughs, and Cisco products and solutions, as well as network deployment and troubleshooting tips, configuration examples, customer case studies, certification and training information, and links to scores of in-depth online resources. You can access Packet magazine at this URL:

http://www.cisco.com/packet

•iQ Magazine is the quarterly publication from Cisco Systems designed to help growing companies learn how they can use technology to increase revenue, streamline their business, and expand services. The publication identifies the challenges facing these companies and the technologies to help solve them, using real-world case studies and business strategies to help readers make sound technology investment decisions. You can access iQ Magazine at this URL:

http://www.cisco.com/go/iqmagazine

•Internet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL:

http://www.cisco.com/ipj

•World-class networking training is available from Cisco. You can view current offerings at this URL:

http://www.cisco.com/en/US/learning/index.html