NETGEAR ProSafe FWAG114 Manual de usuario

SM-FWAG114NA-0

Version 1.0

June 2003

NETGEAR, Inc.

4500 Great America Parkway

Santa Clara, CA 95054 USA

Reference Manual for the

ProSafe Dual Band

Wireless VPN Firewall

FWAG114

Trademarks

NETGEAR is a trademark of Netgear, Inc.

Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.

Other brand and product names are registered trademarks or trademarks of their respective holders.

Statement of Conditions

In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to

make changes to the products described in this document without notice.

NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit

layout(s) described herein.

Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a

residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and

used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no

guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to

radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try

to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.

• Increase the separation between the equipment and receiver.

• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

• Consult the dealer or an experienced radio/TV technician for help.

FCC Caution

1. FCC RF Radiation Exposure Statement: The equipment complies with FCC RF radiation exposure limits set forth

for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20

centimeters between the radiator and your body.

2. This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. 3.

Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the

user authority to operate the equipment.

EN 55 022 Declaration of Conformance

This is to certify that the ProSafe Dual Band Wireless VPN Firewall FWAG114 is shielded against the generation of

radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is

declared by the application of EN 55 022 Class B (CISPR 22).

iii

Bestätigung des Herstellers/Importeurs

Es wird hiermit bestätigt, daß das ProSafe Dual Band Wireless VPN Firewall FWAG114 gemäß der im

BMPT-AmtsblVfg 243/1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben

einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die

Anmerkungen in der Betriebsanleitung.

Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt

gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.

Certificate of the Manufacturer/Importer

It is hereby certified that the ProSafe Dual Band Wireless VPN Firewall FWAG114 has been suppressed in accordance

with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for

example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please

refer to the notes in the operating instructions.

Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market

and has been granted the right to test the series for compliance with the regulations.

Voluntary Control Council for Interference (VCCI) Statement

This equipment is in the second category (information equipment to be used in a residential area or an adjacent area

thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing

Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.

When used near a radio or TV receiver, it may become the cause of radio interference.

Read instructions for correct handling.

Contents v

Contents

Chapter 1

About This Manual

Audience .........................................................................................................................1-1

Typographical Conventions ............................................................................................1-1

Special Message Formats ..............................................................................................1-1

Features of the HTML Version of this Manual ................................................................1-2

Chapter 2

Introduction

Key Features of the VPN Firewall ..................................................................................2-1

802.11g and 802.11b Wireless Networking ..............................................................2-2

A Powerful, True Firewall with Content Filtering ......................................................2-2

Security ....................................................................................................................2-3

Autosensing Ethernet Connections with Auto Uplink ...............................................2-3

Extensive Protocol Support ......................................................................................2-3

Easy Installation and Management ..........................................................................2-4

Maintenance and Support ........................................................................................2-5

Package Contents ..........................................................................................................2-5

The FWAG114’s Front Panel ...................................................................................2-6

The FWAG114’s Rear Panel ....................................................................................2-7

Chapter 3

Connecting the FWAG114 to the Internet

What You Will Need Before You Begin ...........................................................................3-1

Cabling and Computer Hardware Requirements .....................................................3-1

Computer Network Configuration Requirements .....................................................3-1

Internet Configuration Requirements .......................................................................3-2

Where Do I Get the Internet Configuration Parameters? .........................................3-2

Record Your Internet Connection Information ..........................................................3-3

Connecting the ProSafe Dual Band Wireless VPN Firewall FWAG114 to Your LAN .....3-4

PPPoE Wizard-Detected Option ..............................................................................3-8

vi Contents

Dynamic IP Wizard-Detected Option .....................................................................3-10

Fixed IP Account Wizard-Detected Option ............................................................. 3-11

Manually Configuring Your Internet Connection ...........................................................3-12

Chapter 4

Wireless Configuration

Observe Performance, Placement, and Range Guidelines ............................................4-1

Implement Appropriate Wireless Security ......................................................................4-2

Understanding Wireless Settings ...................................................................................4-4

Common Wireless Settings ......................................................................................4-5

Understanding WEP Authentication and Encryption ................................................4-6

Authentication Type ...........................................................................................4-6

WEP ..................................................................................................................4-7

Default Factory Settings ...........................................................................................4-7

Before You Change the SSID and WEP Settings ....................................................4-8

How to Set Up and Test Basic Wireless Connectivity ..............................................4-9

How to Restrict Wireless Access by MAC Address ...............................................4-10

How to Configure WEP ..........................................................................................4-12

Chapter 5

Firewall Protection and

Content Filtering

Firewall Protection and Content Filtering Overview ........................................................5-1

Block Sites ......................................................................................................................5-2

Using Rules to Block or Allow Specific Kinds of Traffic ..................................................5-3

Inbound Rules (Port Forwarding) .............................................................................5-5

Inbound Rule Example: A Local Public Web Server ..........................................5-5

Inbound Rule Example: Allowing Videoconference from Restricted Addresses 5-6

Considerations for Inbound Rules .....................................................................5-6

Outbound Rules (Service Blocking) .........................................................................5-7

Following is an application example of outbound rules: ....................................5-7

Outbound Rule Example: Blocking Instant Messenger .....................................5-7

Order of Precedence for Rules ................................................................................5-8

Default DMZ Server .................................................................................................5-8

Respond to Ping on Internet WAN Port ...................................................................5-9

Services ........................................................................................................................5-10

Using a Schedule to Block or Allow Specific Traffic ......................................................5-12

Time Zone ........................................................................................................5-13

Contents vii

Getting E-Mail Notifications of Event Logs and Alerts ..................................................5-14

Viewing Logs of Web Access or Attempted Web Access .............................................5-16

Syslog ....................................................................................................................5-17

Chapter 6

Maintenance

Viewing VPN Firewall Status Information .......................................................................5-1

Viewing a List of Attached Devices .................................................................................5-5

Upgrading the Router Software ......................................................................................5-5

Configuration File Management .....................................................................................5-6

Restoring and Backing Up the Configuration ...........................................................5-7

Erasing the Configuration .........................................................................................5-8

Changing the Administrator Password ...........................................................................5-8

Chapter 7

Virtual Private Networking

Overview of FWAG114 Policy-Based VPN Configuration ..............................................6-1

Using Policies to Manage VPN Traffic .....................................................................6-2

Using Automatic Key Management ..........................................................................6-2

IKE Policies’ Automatic Key and Authentication Management ................................6-3

VPN Policy Configuration for Auto Key Negotiation .................................................6-6

VPN Policy Configuration for Manual Key Exchange ...............................................6-9

Using Digital Certificates for IKE Auto-Policy Authentication .......................................6-14

Certificate Revocation List (CRL) ...........................................................................6-14

Walk-Through of Configuration Scenarios on the FWAG114 .......................................6-15

VPN Consortium Scenario 1:

Gateway-to-Gateway with Preshared Secrets .......................................................6-16

FWAG114 Scenario 1: FWAG114 to Gateway B IKE and VPN Policies ................6-17

How to Check VPN Connections ...........................................................................6-20

FWAG114 Scenario 2: FWAG114 to FWAG114 with RSA Certificates ..................6-22

Chapter 8

Advanced Configuration

How to Configure Dynamic DNS ....................................................................................6-1

Using the LAN IP Setup Options ....................................................................................6-3

Configuring LAN TCP/IP Setup Parameters ............................................................6-3

Using the Router as a DHCP server ........................................................................6-4

Using Address Reservation ......................................................................................6-5

Configuring Static Routes ...............................................................................................6-6

viii Contents

Enabling Remote Management Access .........................................................................6-8

Chapter 9

Troubleshooting

Basic Functioning ...........................................................................................................7-1

Power LED Not On ...................................................................................................7-1

LEDs Never Turn Off ................................................................................................7-2

LAN or Internet Port LEDs Not On ...........................................................................7-2

Troubleshooting the Web Configuration Interface ..........................................................7-3

Troubleshooting the ISP Connection ..............................................................................7-4

Troubleshooting a TCP/IP Network Using a Ping Utility .................................................7-5

Testing the LAN Path to Your Router .......................................................................7-5

Testing the Path from Your PC to a Remote Device ................................................7-6

Restoring the Default Configuration and Password ........................................................7-7

Problems with Date and Time .........................................................................................7-7

Appendix A

Technical Specifications

Appendix B

Network, Routing, Firewall, and Basics

Related Publications ...................................................................................................... B-1

Basic Router Concepts .................................................................................................. B-1

What is a Router? ................................................................................................... B-2

Routing Information Protocol ................................................................................... B-2

IP Addresses and the Internet ....................................................................................... B-2

Netmask .................................................................................................................. B-4

Subnet Addressing .................................................................................................. B-5

Private IP Addresses ............................................................................................... B-7

Single IP Address Operation Using NAT ....................................................................... B-8

MAC Addresses and Address Resolution Protocol ................................................. B-9

Related Documents ................................................................................................. B-9

Domain Name Server ............................................................................................ B-10

IP Configuration by DHCP ........................................................................................... B-10

Internet Security and Firewalls .................................................................................... B-10

What is a Firewall? .................................................................................................B-11

Stateful Packet Inspection ...............................................................................B-11

Denial of Service Attack ..................................................................................B-11

Contents ix

Ethernet Cabling .......................................................................................................... B-12

Uplink Switches, Crossover Cables, and MDI/MDIX Switching ............................ B-12

Cable Quality ......................................................................................................... B-13

Appendix C

Preparing Your Network

Preparing Your Computers for TCP/IP Networking ....................................................... C-1

Configuring Windows 95, 98, and Me for TCP/IP Networking ....................................... C-2

Install or Verify Windows Networking Components ................................................. C-2

Enabling DHCP to Automatically Configure TCP/IP Settings ................................. C-4

Selecting Windows’ Internet Access Method .......................................................... C-6

Verifying TCP/IP Properties .................................................................................... C-6

Configuring Windows NT4, 2000 or XP for IP Networking ............................................ C-7

Install or Verify Windows Networking Components ................................................. C-7

Enabling DHCP to Automatically Configure TCP/IP Settings ................................. C-8

DHCP Configuration of TCP/IP in Windows XP ..................................................... C-8

DHCP Configuration of TCP/IP in Windows 2000 ................................................ C-10

DHCP Configuration of TCP/IP in Windows NT4 .................................................. C-13

Verifying TCP/IP Properties for Windows XP, 2000, and NT4 .............................. C-15

Configuring the Macintosh for TCP/IP Networking ...................................................... C-16

MacOS 8.6 or 9.x .................................................................................................. C-16

MacOS X ............................................................................................................... C-16

Verifying TCP/IP Properties for Macintosh Computers ......................................... C-17

Verifying the Readiness of Your Internet Account ....................................................... C-18

Are Login Protocols Used? ................................................................................... C-18

What Is Your Configuration Information? .............................................................. C-18

Obtaining ISP Configuration Information for Windows Computers ....................... C-19

Obtaining ISP Configuration Information for Macintosh Computers ..................... C-20

Restarting the Network ................................................................................................ C-21

Appendix D

Wireless Networking Basics

Wireless Networking Overview ...................................................................................... D-1

Infrastructure Mode ................................................................................................. D-2

Ad Hoc Mode (Peer-to-Peer Workgroup) ................................................................ D-2

Network Name: Extended Service Set Identification (ESSID) ................................ D-2

Authentication and WEP Data Encryption ..................................................................... D-3

xContents

802.11 Authentication .............................................................................................. D-3

Open System Authentication ................................................................................... D-4

Shared Key Authentication ...................................................................................... D-4

Overview of WEP Parameters ................................................................................ D-5

Key Size .................................................................................................................. D-6

WEP Configuration Options .................................................................................... D-7

Wireless Channels ......................................................................................................... D-7

802/11b/g Wireless Channels ................................................................................. D-8

802/11a Legal Power Output and Wireless Channels ............................................. D-9

Appendix E

Virtual Private Networking

What is a VPN? ............................................................................................................. E-1

What Is IPSec and How Does It Work? ......................................................................... E-2

IPSec Security Features ......................................................................................... E-2

IPSec Components ................................................................................................. E-3

Encapsulating Security Payload (ESP) ................................................................... E-3

Authentication Header (AH) .................................................................................... E-4

IKE Security Association ......................................................................................... E-5

Mode ................................................................................................................. E-5

Key Management .................................................................................................... E-6

Understand the Process Before You Begin ................................................................... E-7

VPN Process Overview ................................................................................................. E-7

Network Interfaces and Addresses ......................................................................... E-8

Interface Addressing ......................................................................................... E-8

Firewalls ........................................................................................................... E-9

Setting Up a VPN Tunnel Between Gateways ........................................................ E-9

VPNC IKE Security Parameters ...................................................................................E-11

VPNC IKE Phase I Parameters ..............................................................................E-11

VPNC IKE Phase II Parameters ............................................................................ E-12

Testing and Troubleshooting ........................................................................................ E-12

Additional Reading ...................................................................................................... E-12

Glossary

List of Glossary Terms ................................................................................................... G-1

Index

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