ZyXEL Communications ZyXEL ZyWALL 50 Bedienungsanleitung

ZyWALL 50

Internet Security Gateway

User’s Guide

Version 3.50

November 2001

ZyWALL 50 Internet Security Gateway

ii Copyright

The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a

retrieval system, translated into any language, or transmitted in any form or by any means, electronic,

mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written

permission of ZyXEL Communications Corporation.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any products, or software

described herein. Neither does it convey any license under its patent rights nor the patent rights of others.

ZyXEL further reserves the right to make changes in any products described herein without notice. This

publication is subject to change without notice.

Trademarks

ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc.

Other trademarks mentioned in this publication are used for identification purposes only and may be

properties of their respective owners.

ZyWALL 50 Internet Security Gateway

FCC iii

Federal Communications Commission

(FCC) Interference Statement

This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference.

• This device must accept any interference received, including interference that may cause undesired

operations.

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 commercial environment. 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.

If this equipment does cause harmful interference to radio/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:

1. Reorient or relocate the receiving antenna.

2. Increase the separation between the equipment and the receiver.

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

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

Notice 1

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

user's authority to operate the equipment.

ZyWALL 50 Internet Security Gateway

iv Information for Canadian Users

Information for Canadian Users

The Industry Canada label identifies certified equipment. This certification means that the equipment meets

certain telecommunications network protective operation and safety requirements. The Industry Canada

label does not guarantee that the equipment will operate to a user's satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities

of the local telecommunications company. The equipment must also be installed using an acceptable

method of connection. In some cases, the company's inside wiring associated with a single line individual

service may be extended by means of a certified connector assembly. The customer should be aware that

compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated

by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions,

may give the telecommunications company cause to request the user to disconnect the equipment.

For their own protection, users should ensure that the electrical ground connections of the power utility,

telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution

may be particularly important in rural areas.

Caution

Users should not attempt to make such connections themselves, but should contact the appropriate electrical

inspection authority, or electrician, as appropriate.

Note

This digital apparatus does not exceed the Class A limits for radio noise emissions from digital apparatus

set out in the radio interference regulations of Industry Canada.

ZyWALL 50 Internet Security Gateway

Declaration of Conformity v

Declaration of Conformity

We, the Manufacturer/Importer,

ZyXEL Communications Corp.

No. 6, Innovation Rd. II,

Science-Based Industrial Park,

Hsinchu, Taiwan, 300 R.O.C

declare that the product

ZyWALL 50

is in conformity with

(reference to the specification under which conformity is declared)

Standard Standard Item Version

• EN 55022 Radio disturbance characteristics — Limits and method of

measurement.

1994

• EN 61000-3-2 Disturbance in supply system caused by household appliances

and similar electrical equipment “Harmonics”.

1995

• EN 61000-3-3 Disturbance in supply system caused by household appliances

and similar electrical equipment “Voltage fluctuations”.

1995

• EN 61000-4-2 Electrostatic discharge immunity test — Basic EMC Publication 1995

• EN 61000-4-3 Radiated, radio-frequency, electromagnetic field immunity test 1996

• EN 61000-4-4 Electrical fast transient / burst immunity test - Basic EMC

Publication

1995

• EN 61000-4-5 Surge immunity test 1995

• EN 61000-4-6 Immunity to conducted disturbances, induced by radio-frequency

fields

1996

• EN 61000-4-8 1993

• EN 61000-4-11 Voltage dips, short interruptions and voltage variations immunity

tests

1994

Certifications

Refer to the product page at www.zyxel.com.

ZyWALL 50 Internet Security Gateway

vi ZyXEL Limited Warranty

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or

workmanship for a period of up to two years from the date of purchase. During the warranty period, and upon

proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials,

ZyXEL will, at its discretion, repair or replace the defective products or components without charge for

either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to

proper operating condition. Any replacement will consist of a new or re-manufactured functionally

equivalent product of equal value, and will be solely at the discretion of ZyXEL. This warranty shall not

apply if the product is modified, misused, tampered with, damaged by an act of God, or subjected to

abnormal working conditions.

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This

warranty is in lieu of all other warranties, express or implied, including any implied warranty of

merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect

or consequential damages of any kind of character to the purchaser.

To obtain the services of this warranty, contact ZyXEL's Service Center for your Return Material

Authorization number (RMA). Products must be returned Postage Prepaid. It is recommended that the unit be

insured when shipped. Any returned products without proof of purchase or those with an out-dated warranty

will be repaired or replaced (at the discretion of ZyXEL) and the customer will be billed for parts and labor.

All repaired or replaced products will be shipped by ZyXEL to the corresponding return address, Postage

Paid. This warranty gives you specific legal rights, and you may also have other rights that vary from country

to country.

Online Registration

Don’t forget to register your ZyXEL product (fast, easy online registration at www.zyxel.com) for free future

product updates and information.

ZyWALL 50 Internet Security Gateway

Customer Support vii

Customer Support

Please have the following information ready when you contact customer support.

• Product model and serial number.

• Information in Menu 24.2.1 – System Information.

• Warranty Information.

• Date that you received your device.

• Brief description of the problem and the steps you took to solve it.

METHOD

LOCATION

E-MAIL

SUPPORT/SALES

TELEPHONE/FAX WEB SITE/ FTP SITE REGULAR MAIL

support@zyxel.com.tw

support@europe.zyxel.com

+886-3-578-3942 www.zyxel.com

www.europe.zyxel.com

WORLDWIDE

sales@zyxel.com.tw +886-3-578-2439 ftp.europe.zyxel.com

ZyXEL Communications Corp.,

6 Innovation Road II, Science-

Based Industrial Park,

HsinChu, Taiwan 300, R.O.C.

support@zyxel.com +1-714-632-0882

800-255-4101

www.zyxel.comNORTH AMERICA

sales@zyxel.com +1-714-632-0858 ftp.zyxel.com

ZyXEL Communications Inc.,

1650 Miraloma Avenue,

Placentia, CA 92870, U.S.A.

support@zyxel.dk +45-3955-0700 www.zyxel.dkSCANDINAVIA

sales@zyxel.dk +45-3955-0707 ftp.zyxel.dk

ZyXEL Communications A/S,

Columbusvej 5, 2860 Soeborg,

Denmark.

support@zyxel.at +43-1-4948677-0 www.zyxel.at

USTRIA

sales@zyxel.at +43-1-4948678 ftp.zyxel.at

ZyXEL Communications

Services GmbH. Thaliastrasse

125a/2/2/4 A-1160 Vienna,

Austria

support@zyxel.de +49-2405-6909-0 www.zyxel.deGERMANY

sales@zyxel.de +49-2405-6909-99

ZyXEL Deutschland GmbH.

Adenauerstr. 20/A4 D-52146

Wuerselen, Germany

support@zyxel.com.my +603-795-44-688 www.zyxel.com.myMALAYSIA

sales@zyxel.com.my +603-795-34-407

Lot B2-06, PJ Industrial Park,

Section 13, Jalan Kemajuan,

46200 Petaling Jaya Selangor

Darul Ehasn, Malaysia

P312 Broadband Security Gateway

viii Table Of Contents

Table of Contents

Copyright..................................................................................................................................................... ii

Federal Communications Commission (FCC) Interference Statement................................................. iii

Information for Canadian Users............................................................................................................... iv

ZyXEL Limited Warranty......................................................................................................................... vi

Customer Support..................................................................................................................................... vii

List of Figures........................................................................................................................................... xix

List Of Tables ......................................................................................................................................... xxvi

Preface..................................................................................................................................................... xxxi

GETTING STARTED ......................................................................................................................................I

Chapter 1 Getting to Know Your ZyWALL...........................................................................................1-1

1.1 The ZyWALL 50 Internet Security Gateway ............................................................................. 1-1

1.2 Features of The ZyWALL 50 ..................................................................................................... 1-1

1.3 Applications for the ZyWALL 50 .............................................................................................. 1-4

1.3.1 Secure Broadband Internet Access via Cable or DSL Modem........................................... 1-4

1.3.2 VPN Application ................................................................................................................ 1-5

Chapter 2 Hardware Installation............................................................................................................ 2-1

2.1 Front Panel LEDs and Back Panel Ports .................................................................................... 2-1

2.1.1 Front Panel LEDs ............................................................................................................... 2-1

2.2 ZyWALL 50 Rear Panel and Connections ................................................................................. 2-2

2.3 Additional Installation Requirements ......................................................................................... 2-5

Chapter 3 Initial Setup ............................................................................................................................ 3-1

3.1 Turning On Your ZyWALL ....................................................................................................... 3-1

ZyWALL 50 Internet Security Gateway

Table Of Contents ix

3.1.1 Initial Screen .......................................................................................................................3-1

3.1.2 Entering the Password.........................................................................................................3-1

3.2 Navigating the SMT Interface ....................................................................................................3-2

3.2.1 Main Menu..........................................................................................................................3-3

3.2.2 System Management Terminal Interface Summary............................................................3-3

3.2.3 SMT Menus at a Glance .....................................................................................................3-5

3.3 Changing the System Password..................................................................................................3-7

3.4 Resetting the ZyWALL ..............................................................................................................3-8

3.4.1 Methods of Restoring Factory-Defaults..............................................................................3-8

3.4.2 Procedure To Use The Reset Button...................................................................................3-9

Chapter 4 General And WAN Setup .......................................................................................................4-1

4.1 System Name ..............................................................................................................................4-1

4.2 Dynamic DNS.............................................................................................................................4-1

4.3 WAN Setup.................................................................................................................................4-3

Chapter 5 LAN Setup...............................................................................................................................5-1

5.1 Introduction.................................................................................................................................5-1

5.2 LAN Port Filter Setup.................................................................................................................5-1

5.3 TCP/IP and DHCP for LAN .......................................................................................................5-1

5.3.1 Factory LAN Defaults.........................................................................................................5-2

5.3.2 DHCP Configuration ..........................................................................................................5-2

5.3.3 IP Address and Subnet Mask ..............................................................................................5-2

5.3.4 Private IP Addresses ...........................................................................................................5-3

5.3.5 RIP Setup ............................................................................................................................5-4

5.3.6 IP Multicast.........................................................................................................................5-4

5.3.7 IP Alias ...............................................................................................................................5-5

5.4 TCP/IP and DHCP Ethernet Setup Menu ...................................................................................5-5

5.4.1 IP Alias Setup .....................................................................................................................5-7

P312 Broadband Security Gateway

x Table Of Contents

Chapter 6 Internet Access ....................................................................................................................... 6-1

6.1 Internet Access Setup ................................................................................................................. 6-1

6.1.1 Ethernet Encapsulation ....................................................................................................... 6-1

6.1.2 PPTP Encapsulation ........................................................................................................... 6-2

6.1.3 Configuring the PPTP Client.............................................................................................. 6-3

6.1.4 PPPoE Encapsulation ......................................................................................................... 6-4

6.2 Basic Setup Complete................................................................................................................. 6-5

ADVANCED APPLICATIONS ..................................................................................................................... II

Chapter 4 Remote Node Setup................................................................................................................ 4-1

4.1 Remote Node Profile .................................................................................................................. 4-1

4.1.1 Ethernet Encapsulation ....................................................................................................... 4-1

4.1.2 PPPoE Encapsulation ......................................................................................................... 4-3

4.1.3 PPTP Encapsulation ........................................................................................................... 4-5

4.2 Editing TCP/IP Options (with Ethernet Encapsulation) ............................................................. 4-7

4.2.1 Editing TCP/IP Options (with PPTP Encapsulation).......................................................... 4-8

4.2.2 Editing TCP/IP Options (with PPPoE Encapsulation)...................................................... 4-10

4.3 Remote Node Filter .................................................................................................................. 4-10

Chapter 5 IP Static Route Setup ............................................................................................................. 5-1

5.1 IP Static Route Setup.................................................................................................................. 5-2

Chapter 6 Network Address Translation (NAT).................................................................................... 6-1

6.1 Introduction ................................................................................................................................ 6-1

6.1.1 NAT Definitions.................................................................................................................6-1

6.1.2 What NAT Does ................................................................................................................. 6-2

6.1.3 How NAT Works ............................................................................................................... 6-2

6.1.4 NAT Application ................................................................................................................ 6-3

6.1.5 NAT Mapping Types.......................................................................................................... 6-4

6.2 Using NAT ................................................................................................................................. 6-6

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