ZyXEL Communications Prestige 652 User manual

Prestige 652
ADSL Security Router
User's Guide
Version 3.40
August 2002

Prestige 652 ADSL Security Router
ii Copyright
Copyright
Copyright © 2002 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 ADSL Security Router
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 ADSL Security Router
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.

Prestige 652 ADSL Security Router
ZyXEL Limited Waranty v
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 ADSL Security Router
vi Customer Support
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
[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, Taiwan 300,
R.O.C.
[email protected]m [phone]
800-255-4101
www.zyxel.comNORTH AMERICA
[e-mail] [phone] ftp.zyxel.com
ZyXEL Communications Inc.,
1650 Miraloma Avenue,
Placentia, CA 92870, U.S.A.
[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/A4 D-52146
Wuerselen, Germany
[email protected]m.my [phone] www.zyxel.com.myMALAYSIA
[e-mail] [phone]
Lot B2-06, PJ Industrial Park,
Section 13, Jalan Kemajuan,
46200 Petaling Jaya
Selangor Darul Ehasn,
Malaysia

Prestige 652 ADSL Security Router
Table of Contents vii
Table of Contents
GETTING STARTED........................................................................................................................................I
Chapter 1 Getting To Know Your Prestige.................................................................................................1-1
1.1 Prestige 652 ADSL Security Router ..........................................................................................1-1
1.2 Features ......................................................................................................................................1-1
1.3 Applications for the Prestige 652 ...............................................................................................1-6
Chapter 2 Hardware Installation and Initial Setup ..................................................................................2-1
2.1 Front Panel LEDs of the P652....................................................................................................2-1
2.2 Rear Panel and Connections.......................................................................................................2-2
2.3 Additional Installation Requirements.........................................................................................2-3
2.4 P652 with POTS.........................................................................................................................2-4
2.5 P652 with ISDN .........................................................................................................................2-6
2.6 Turning On Your Prestige..........................................................................................................2-7
2.7 Configuring Your Prestige For Internet Access .........................................................................2-7
2.8 Resetting the Prestige.................................................................................................................2-8
2.9 Navigating the SMT Interface..................................................................................................2-10
2.10 Changing the System Password ...............................................................................................2-13
Chapter 3 General Setup .............................................................................................................................3-1
3.1 System Name .............................................................................................................................3-1
3.2 Dynamic DNS ............................................................................................................................3-1
3.3 General Setup.............................................................................................................................3-2
3.4 LAN Setup .................................................................................................................................3-4
3.5 Protocol Dependent Ethernet Setup ...........................................................................................3-5
Chapter 4 Internet Access ...........................................................................................................................4-1
4.1 Factory Ethernet Defaults...........................................................................................................4-1
4.2 LANs and WANs .......................................................................................................................4-1
4.3 TCP/IP Parameters .....................................................................................................................4-2
4.4 IP Multicast ................................................................................................................................4-5
4.5 IP Policies ..................................................................................................................................4-5
4.6 IP Alias.......................................................................................................................................4-5
4.7 Route IP Setup............................................................................................................................4-8
4.8 TCP/IP Ethernet Setup and DHCP.............................................................................................4-8
4.9 VPI and VCI.............................................................................................................................4-11
4.10 Multiplexing.............................................................................................................................4-11
4.11 Encapsulation ...........................................................................................................................4-11
4.12 IP Address Assignment ............................................................................................................4-12
4.13 Internet Access Configuration..................................................................................................4-13
Advanced Applications .................................................................................................................................... II

Prestige 652 ADSL Security Router
viii Table of Contents
Chapter 5 Remote Node Configuration .....................................................................................................5-1
5.1 Remote Node Setup ...................................................................................................................5-1
5.2 Remote Node Setup ...................................................................................................................5-6
5.3 Remote Node Filter....................................................................................................................5-8
Chapter 6 Remote Node TCP/IP Configuration........................................................................................6-1
6.1 TCP/IP Configuration ................................................................................................................6-1
Chapter 7 Bridging Setup ...........................................................................................................................7-1
7.1 Bridging in General....................................................................................................................7-1
7.2 Bridge Ethernet Setup................................................................................................................7-1
Chapter 8 Network Address Translation (NAT)........................................................................................8-1
8.1 Introduction................................................................................................................................8-1
8.2 Using NAT.................................................................................................................................8-6
8.3 NAT Setup .................................................................................................................................8-8
8.4 NAT Server Sets – Port Forwarding ........................................................................................8-16
8.5 General NAT Examples...........................................................................................................8-20
FIREWALL AND CONTENT FILTERS........................................................................................................ III
Chapter 9 Firewalls......................................................................................................................................9-1
9.1 What Is a Firewall? ....................................................................................................................9-1
9.2 Types of Firewalls......................................................................................................................9-1
9.3 Introduction to ZyXEL’s Firewall .............................................................................................9-2
9.4 Denial of Service .......................................................................................................................9-3
9.5 Stateful Inspection .....................................................................................................................9-7
9.6 Guidelines For Enhancing Security With Your Firewall .........................................................9-11
9.7 Packet Filtering Vs Firewall ....................................................................................................9-12
Chapter 10 Introducing the Prestige Firewall .........................................................................................10-1
10.1 Remote Management and the Firewall ....................................................................................10-1
10.2 Access Methods .......................................................................................................................10-1
10.3 Using Prestige SMT Menus .....................................................................................................10-1
Chapter 11 Using the Prestige Web Configurator................................................................................... 11-1
11.1 Web Configurator Login and Main Menu Screens ..................................................................11-1
11.2 Enabling the Firewall...............................................................................................................11-2
11.3 E-mail ......................................................................................................................................11-2
11.4 Attack Alert..............................................................................................................................11-6
Chapter 12 Creating Custom Rules .........................................................................................................12-1
12.1 Rules Overview........................................................................................................................12-1
12.2 Rule Logic Overview...............................................................................................................12-1
12.3 Connection Direction...............................................................................................................12-3
12.4 Rule Summary .........................................................................................................................12-4
12.5 Predefined Services..................................................................................................................12-6
12.6 Timeout.................................................................................................................................. 12-13
Chapter 13 Customized Services ..............................................................................................................13-1

Prestige 652 ADSL Security Router
Table of Contents ix
13.1 Introduction..............................................................................................................................13-1
13.2 Creating/Editing A Customized Service ..................................................................................13-3
13.3 Example DHCP Negotiation and Syslog Connection from the Internet ..................................13-4
Chapter 14 Logs .........................................................................................................................................14-1
14.1 Log Screen ...............................................................................................................................14-1
Chapter 15 Content Filtering ....................................................................................................................15-1
15.1 Keyword...................................................................................................................................15-1
15.2 Schedule...................................................................................................................................15-1
15.3 Trusted .....................................................................................................................................15-1
15.4 Logs..........................................................................................................................................15-1
Advanced Management...................................................................................................................................IV
Chapter 16 Filter Configuration...............................................................................................................16-1
16.1 About Filtering.........................................................................................................................16-1
16.2 Configuring a Filter Set............................................................................................................16-4
16.3 Configuring a Filter Rule .........................................................................................................16-9
16.4 Filter Types and NAT ............................................................................................................16-16
16.5 Example Filter........................................................................................................................16-16
16.6 Applying Filters and Factory Defaults ...................................................................................16-19
Chapter 17 SNMP Configuration .............................................................................................................17-1
17.1 About SNMP............................................................................................................................17-1
17.2 Supported MIBs .......................................................................................................................17-2
17.3 SNMP Configuration ...............................................................................................................17-2
17.4 SNMP Traps.............................................................................................................................17-4
Chapter 18 System Information and Diagnosis.......................................................................................18-1
18.1 System Status ...........................................................................................................................18-1
18.2 System Information and Console Port Speed...........................................................................18-3
18.3 Log and Trace ..........................................................................................................................18-5
18.4 Diagnostic ................................................................................................................................18-8
18.5 Command Interpreter Mode.....................................................................................................18-9
Chapter 19 Firmware and Configuration File Maintenance..................................................................19-1
19.1 Filename Conventions..............................................................................................................19-1
19.2 Backup Configuration ..............................................................................................................19-2
19.3 Restore Configuration ..............................................................................................................19-7
19.4 Uploading Firmware and Configuration Files........................................................................19-10
Chapter 20 System Maintenance and Information .................................................................................20-1
20.1 Command Interpreter Mode.....................................................................................................20-1
20.2 Call Control Support ................................................................................................................20-2
20.3 Time and Date Setting..............................................................................................................20-4
Chapter 21 Remote Management .............................................................................................................21-1
21.1 About Telnet Configuration .....................................................................................................21-1
21.2 Telnet Under NAT ...................................................................................................................21-1

Prestige 652 ADSL Security Router
x Table of Contents
21.3 Telnet Capabilities ...................................................................................................................21-1
21.4 FTP ..........................................................................................................................................21-2
21.5 Web..........................................................................................................................................21-2
21.6 Remote Management ...............................................................................................................21-2
21.7 Remote Management and NAT ...............................................................................................21-4
21.8 System Timeout .......................................................................................................................21-4
Chapter 22 IP Policy Routing ...................................................................................................................22-1
22.1 Introduction..............................................................................................................................22-1
22.2 Benefits ....................................................................................................................................22-1
22.3 Routing Policy .........................................................................................................................22-1
22.4 IP Routing Policy Setup...........................................................................................................22-2
22.5 Applying an IP Policy..............................................................................................................22-5
22.6 IP Policy Routing Example......................................................................................................22-7
CALL SCHEDULING, VPN/IPSEC AND INTERNAL SPTGEN ................................................................. V
Chapter 23 Call Scheduling ......................................................................................................................23-1
23.1 Introduction..............................................................................................................................23-1
Chapter 24 Introduction to IPSec.............................................................................................................24-1
24.1 Introduction..............................................................................................................................24-1
24.2 IPSec Architecture ...................................................................................................................24-3
24.3 Encapsulation...........................................................................................................................24-5
24.4 IPSec and NAT ........................................................................................................................24-5
Chapter 25 VPN/IPSec Setup....................................................................................................................25-1
25.1 VPN/IPSec Setup.....................................................................................................................25-1
25.2 IPSec Algorithms .....................................................................................................................25-2
25.3 IPSec Summary........................................................................................................................25-3
25.4 IPSec Setup..............................................................................................................................25-8
25.5 IKE Setup...............................................................................................................................25-12
25.6 Manual Setup .........................................................................................................................25-17
Chapter 26 SA Monitor .............................................................................................................................26-1
1.1. Introduction..............................................................................................................................26-1
Chapter 27 IPSec Log................................................................................................................................27-1
27.1 IPSec Logs ...............................................................................................................................27-1
Chapter 28 Internal SPTGEN ..................................................................................................................28-1
28.1 The Configuration Text File Format........................................................................................28-1
28.2 Internal SPTGEN FTP Download Example ............................................................................28-3
28.3 Internal SPTGEN FTP Upload Example .................................................................................28-4
ADDITIONAL INFORMATION ................................................................................................................... VI
Chapter 29 Troubleshooting......................................................................................................................29-1
29.1 Problems Starting Up the Prestige ...........................................................................................29-1
29.2 Problems with the LAN LED...................................................................................................29-1
29.3 Problems with the DSL LED ...................................................................................................29-2