ZyXEL Communications Prestige 652 Series User manual

Prestige 652 Series
ADSL Security/Wireless LAN Router
User's Guide
Version 3.40
August 2003

Prestige 652 Series User’s Guide
ii Copyright
Copyright
Copyright © 2003 by ZyXEL Communications Corporation.
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.
Published by ZyXEL Communications Corporation. All rights reserved.
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.

Prestige 652 Series User’s Guide
FCC Statement 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.
Certifications
Refer to the product page at www.zyxel.com.

Prestige 652 Series User’s Guide
iv ZyXEL 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.
Safety Warnings
1. To reduce the risk of fire, use only No. 26 AWG or larger telephone wire.
2. Do not use this product near water, for example, in a wet basement or near a swimming pool.
3. Avoid using this product during an electrical storm. There may be a remote risk of electric shock from
lightening.

Prestige 652 Series User’s Guide
Customer Support v
Customer Support
Please have the following information ready when you contact customer support.
• Product model and serial number.
• 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
[email protected]m.tw [phone] www.zyxel.com
www.europe.zyxel.com
WORLDWIDE
[e-mail] [phone] ftp.europe.zyxel.com
ZyXEL Communications Corp.,
6 Innovation Road II, Science-
Based Industrial Park, Hsinchu
300, Taiwan.
[email protected]m [phone] www.us.zyxel.comNORTH
AMERICA
[e-mail] [phone] ftp.zyxel.com
[email protected] [phone] www.zyxel.dkSCANDINAVIA
[e-mail] [phone] ftp.zyxel.dk
ZyXEL Communications A/S,
Columbusvej 5, 2860 Soeborg,
Denmark.
[email protected] [phone] www.zyxel.deGERMANY
[e-mail] [phone]
ZyXEL Deutschland GmbH.
Adenauerstr. 20/A2 D-52146
Wuerselen, Germany
FINLAND [email protected]
[e-mail]
[phone]
[phone]
www.zyxel.fi ZyXEL Communications Oy,
Malminkaari 10, 00700
Helsinki, Finland.

Prestige 652 Series User’s Guide
vi Table of Contents
Table of Contents
Copyright.......................................................................................................................................................... ii
Federal Communications Commission (FCC) Interference Statement............................................................iii
ZyXEL Limited Warranty................................................................................................................................ iv
Customer Support ............................................................................................................................................. v
List of Figures..............................................................................................................................................xviii
List of Tables .............................................................................................................................................xxviii
List of Charts .............................................................................................................................................xxxiii
Preface ........................................................................................................................................................ xxxv
What is DSL?............................................................................................................................................ xxxvii
Getting Started ...................................................................................................................................................I
Chapter 1 Getting To Know Your Prestige.....................................................................................................1-1
1.1 Introducing the Prestige 652 Series ...........................................................................................1-1
1.2 Features of the Prestige..............................................................................................................1-1
1.3 Applications for the Prestige......................................................................................................1-6
Chapter 2 Introducing the Web Configurator.................................................................................................2-1
2.1 Web Configurator Overview......................................................................................................2-1
2.2 Accessing the Prestige Web Configurator .................................................................................2-1
2.3 Navigating the Prestige Web Configurator ................................................................................2-2
2.4 Resetting the Prestige.................................................................................................................2-3
Chapter 3 Wizard Setup .................................................................................................................................3-1
3.1 Wizard Setup Introduction.........................................................................................................3-1
3.2 Encapsulation.............................................................................................................................3-1
3.3 Multiplexing...............................................................................................................................3-2
3.4 VPI and VCI ..............................................................................................................................3-2
3.5 Wizard Setup Configuration: First Screen .................................................................................3-2

Prestige 652 Series User’s Guide
Table of Contents vii
3.6 IP Address and Subnet Mask .....................................................................................................3-4
3.7 IP Address Assignment..............................................................................................................3-4
3.8 Nailed-Up Connection (PPP) .....................................................................................................3-6
3.9 NAT ...........................................................................................................................................3-6
3.10 Wizard Setup Configuration: Second Screen .............................................................................3-6
3.11 DHCP Setup.............................................................................................................................3-11
3.12 Wizard Setup Configuration: Third Screen..............................................................................3-12
3.13 Wizard Setup Configuration: Connection Tests.......................................................................3-14
3.14 Test Your Internet Connection.................................................................................................3-15
Password, LAN, Wireless LAN and WAN....................................................................................................... II
Chapter 4 Password Setup..............................................................................................................................4-1
4.1 Password Overview....................................................................................................................4-1
4.2 Configuring Password................................................................................................................4-1
Chapter 5 LAN Setup.....................................................................................................................................5-1
5.1 LAN Overview...........................................................................................................................5-1
5.2 DNS Server Address ..................................................................................................................5-1
5.3 DNS Server Address Assignment ..............................................................................................5-2
5.4 LAN TCP/IP ..............................................................................................................................5-2
5.5 Configuring LAN .......................................................................................................................5-4
Chapter 6 Wireless LAN Setup ......................................................................................................................6-1
6.1 Wireless LAN Overview............................................................................................................6-1
6.2 Levels of Security ......................................................................................................................6-3
6.3 Data Encryption with WEP ........................................................................................................6-4
6.4 Inserting a PCMCIA Wireless LAN Card..................................................................................6-4
6.5 Configuring Wireless LAN ........................................................................................................6-4
6.6 Configuring MAC Filter.............................................................................................................6-6
6.7 Network Authentication .............................................................................................................6-8

Prestige 652 Series User’s Guide
viii Table of Contents
6.8 Configuring 802.1x..................................................................................................................6-10
6.9 Configuring Local User Authentication...................................................................................6-12
6.10 Configuring RADIUS ..............................................................................................................6-14
Chapter 7 WAN Setup....................................................................................................................................7-1
7.1 WAN Overview .........................................................................................................................7-1
7.2 Metric.........................................................................................................................................7-1
7.3 PPPoE Encapsulation.................................................................................................................7-1
7.4 Traffic Shaping ..........................................................................................................................7-2
7.5 Configuring WAN Setup ...........................................................................................................7-3
7.6 WAN Backup.............................................................................................................................7-7
7.7 Traffic Redirect..........................................................................................................................7-7
7.8 Configuring WAN Backup ........................................................................................................7-9
7.9 Configuring Advanced WAN Backup ..................................................................................... 7-11
7.10 AT Command Strings ..............................................................................................................7-15
7.11 DTR Signal ..............................................................................................................................7-16
7.12 Response Strings......................................................................................................................7-16
7.13 Configuring Advanced Modem Setup .....................................................................................7-16
NAT, Dynamic DNS and Time Zone .............................................................................................................. III
Chapter 8 Network Address Translation (NAT) Screens ...............................................................................8-1
8.1 NAT Overview ..........................................................................................................................8-1
8.2 SUA (Single User Account) Versus NAT .................................................................................8-5
8.3 SUA Server................................................................................................................................8-6
8.4 Selecting the NAT Mode ...........................................................................................................8-8
8.5 Configuring SUA Server............................................................................................................8-9
8.6 Configuring Address Mapping.................................................................................................8-11
8.7 Editing an Address Mapping Rule ...........................................................................................8-12
Chapter 9 Dynamic DNS Setup .....................................................................................................................9-1

Prestige 652 Series User’s Guide
Table of Contents ix
9.1 Dynamic DNS ............................................................................................................................9-1
9.2 Configuring Dynamic DNS........................................................................................................9-1
Chapter 10 Time Zone..................................................................................................................................10-1
10.1 Configuring Time Zone............................................................................................................10-1
Firewall and Content Filters............................................................................................................................IV
Chapter 11 Firewalls ....................................................................................................................................11-1
11.1 Firewall Overview....................................................................................................................11-1
11.2 Types of Firewalls....................................................................................................................11-1
11.3 Introduction to ZyXEL’s Firewall............................................................................................11-2
11.4 Denial of Service......................................................................................................................11-3
11.5 Stateful Inspection....................................................................................................................11-7
11.6 Guidelines For Enhancing Security With Your Firewall .......................................................11-11
11.7 Packet Filtering Vs Firewall...................................................................................................11-12
Chapter 12 Firewall Configuration ..............................................................................................................12-1
12.1 Remote Management and the Firewall.....................................................................................12-1
12.2 Enabling the Firewall ...............................................................................................................12-1
12.3 Attack Alert..............................................................................................................................12-2
Chapter 13 Creating Custom Rules..............................................................................................................13-1
13.1 Rules Overview........................................................................................................................13-1
13.2 Rule Logic Overview ...............................................................................................................13-1
13.3 Connection Direction ...............................................................................................................13-3
13.4 Logs..........................................................................................................................................13-4
13.5 Rule Summary..........................................................................................................................13-4
13.6 Predefined Services..................................................................................................................13-6
13.7 Creating/Editing Firewall Rules...............................................................................................13-9
13.8 Timeout ..................................................................................................................................13-12
Chapter 14 Customized Services .................................................................................................................14-1

Prestige 652 Series User’s Guide
x Table of Contents
14.1 Introduction to Customized Services .......................................................................................14-1
14.2 Creating/Editing A Customized Service ..................................................................................14-2
14.3 Example Custom Service Firewall Rule ..................................................................................14-3
Chapter 15 Content Filtering Screens ..........................................................................................................15-1
15.1 Content Filtering Overview .....................................................................................................15-1
15.2 Configuring Keyword Blocking...............................................................................................15-1
15.3 Configuring the Schedule ........................................................................................................15-3
15.4 Configuring Trusted Computers ..............................................................................................15-4
VPN/IPSec....................................................................................................................................................... V
Chapter 16 Introduction to IPSec.................................................................................................................16-1
16.1 VPN Overview.........................................................................................................................16-1
16.2 IPSec Architecture ...................................................................................................................16-3
16.3 Encapsulation...........................................................................................................................16-5
16.4 IPSec and NAT ........................................................................................................................16-5
Chapter 17 VPN Screens .............................................................................................................................17-1
17.1 VPN/IPSec Overview ..............................................................................................................17-1
17.2 IPSec Algorithms.....................................................................................................................17-1
17.3 My IP Address .........................................................................................................................17-2
17.4 Secure Gateway Address .........................................................................................................17-2
17.5 VPN Summary Screen .............................................................................................................17-3
17.6 Keep Alive ...............................................................................................................................17-5
17.7 ID Type and Content................................................................................................................17-5
17.8 Pre-Shared Key ........................................................................................................................17-7
17.9 Editing VPN Policies ...............................................................................................................17-7
17.10 IKE Phases.............................................................................................................................17-13
17.11 Configuring Advanced IKE Settings .....................................................................................17-14
17.12 Manual Key Setup .................................................................................................................17-18