ZyXEL Communications ZyXEL ZyWALL 35 User manual

www.zyxel.com
ZyWALL 5/35/70 Series
Internet Security Appliance
User’s Guide
Version 4.03
1/2008
Edition 1
DEFAULT LOGIN
IP Address http://192.168.1.1
Password 1234

About This User's Guide
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About This User's Guide
Intended Audience
This manual is intended for people who want to configure the ZyWALL using the web
configurator or System Management Terminal (SMT). You should have at least a basic
knowledge of TCP/IP networking concepts and topology.
Related Documentation
• Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. It contains
information on setting up your network and configuring for Internet access.
• Web Configurator Online Help
Embedded web help for descriptions of individual screens and supplementary
information.
• CLI Reference Guide
The CLI Reference Guide explains how to use the Command-Line Interface (CLI) to
configure the ZyWALL.
• Supporting Disk
Refer to the included CD for support documents.
• ZyXEL Web Site
Please refer to www.zyxel.com for additional support documentation and product
certifications.
User Guide Feedback
Help us help you. Send all User Guide-related comments, questions or suggestions for
improvement to the following address, or use e-mail instead. Thank you!
The Technical Writing Team,
ZyXEL Communications Corp.,
6 Innovation Road II,
Science-Based Industrial Park,
Hsinchu, 300, Taiwan.
E-mail: [email protected]

Document Conventions
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4
Document Conventions
Warnings and Notes
These are how warnings and notes are shown in this User’s Guide.
1Warnings tell you about things that could harm you or your device.
"Notes tell you other important information (for example, other things you may
need to configure or helpful tips) or recommendations.
Syntax Conventions
• The ZyWALL 5/35/70 series may be referred to as the “ZyWALL”, the “device” or the
“system” in this User’s Guide.
• Product labels, screen names, field labels and field choices are all in bold font.
• A key stroke is denoted by square brackets and uppercase text, for example, [ENTER]
means the “enter” or “return” key on your keyboard.
• “Enter” means for you to type one or more characters and then press the [ENTER] key.
“Select” or “choose” means for you to use one of the predefined choices.
• A right angle bracket ( > ) within a screen name denotes a mouse click. For example,
Maintenance > Log > Log Setting means you first click Maintenance in the navigation
panel, then the Log sub menu and finally the Log Setting tab to get to that screen.
• Units of measurement may denote the “metric” value or the “scientific” value. For
example, “k” for kilo may denote “1000” or “1024”, “M” for mega may denote “1000000”
or “1048576” and so on.
• “e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.

Document Conventions
ZyWALL 5/35/70 Series User’s Guide 5
Icons Used in Figures
Figures in this User’s Guide may use the following generic icons. The ZyWALL icon is not an
exact representation of your device.
ZyWALL Computer Notebook computer
Server Firewall Telephone
Switch Router

Safety Warnings
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6
Safety Warnings
1For your safety, be sure to read and follow all warning notices and instructions.
• Do NOT use this product near water, for example, in a wet basement or near a swimming
pool.
• Do NOT expose your device to dampness, dust or corrosive liquids.
• Do NOT store things on the device.
• Do NOT install, use, or service this device during a thunderstorm. There is a remote risk
of electric shock from lightning.
• Connect ONLY suitable accessories to the device.
• Do NOT open the device or unit. Opening or removing covers can expose you to
dangerous high voltage points or other risks. ONLY qualified service personnel should
service or disassemble this device. Please contact your vendor for further information.
• Make sure to connect the cables to the correct ports.
• Place connecting cables carefully so that no one will step on them or stumble over them.
• Always disconnect all cables from this device before servicing or disassembling.
• Use ONLY an appropriate power adaptor or cord for your device.
• Connect the power adaptor or cord to the right supply voltage (for example, 110V AC in
North America or 230V AC in Europe).
• Do NOT remove the plug and connect it to a power outlet by itself; always attach the plug
to the power adaptor first before connecting it to a power outlet.
• Do NOT allow anything to rest on the power adaptor or cord and do NOT place the
product where anyone can walk on the power adaptor or cord.
• Do NOT use the device if the power adaptor or cord is damaged as it might cause
electrocution.
• If the power adaptor or cord is damaged, remove it from the power outlet.
• Do NOT attempt to repair the power adaptor or cord. Contact your local vendor to order a
new one.
• Do not use the device outside, and make sure all the connections are indoors. There is a
remote risk of electric shock from lightning.
• CAUTION: RISK OF EXPLOSION IF BATTERY (on the motherboard) IS REPLACED
BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO
THE INSTRUCTIONS. Dispose them at the applicable collection point for the recycling
of electrical and electronic equipment. For detailed information about recycling of this
product, please contact your local city office, your household waste disposal service or the
store where you purchased the product.
• Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your
device.
• Fuse Warning! Replace a fuse only with a fuse of the same type and rating.

Safety Warnings
ZyWALL 5/35/70 Series User’s Guide 7
This product is recyclable. Dispose of it properly.

Safety Warnings
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Contents Overview
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Contents Overview
Introduction ............................................................................................................................53
Getting to Know Your ZyWALL .................................................................................................. 55
Introducing the Web Configurator ..............................................................................................61
Wizard Setup ............................................................................................................................. 87
Tutorials ................................................................................................................................... 109
Registration ............................................................................................................................. 141
Network .................................................................................................................................147
LAN Screens ........................................................................................................................... 149
Bridge Screens ........................................................................................................................ 161
WAN Screens .......................................................................................................................... 167
DMZ Screens ........................................................................................................................... 203
WLAN ...................................................................................................................................... 213
Security .................................................................................................................................241
Firewall .................................................................................................................................... 243
Intrusion Detection and Prevention (IDP) ................................................................................ 275
Configuring IDP ....................................................................................................................... 279
Anti-Virus ................................................................................................................................. 295
Anti-Spam ................................................................................................................................ 307
Content Filtering Screens ........................................................................................................321
Content Filtering Reports ......................................................................................................... 343
IPSec VPN ............................................................................................................................... 351
Certificates ............................................................................................................................... 395
Authentication Server .............................................................................................................. 425
Advanced ..............................................................................................................................429
Network Address Translation (NAT) ........................................................................................ 431
Static Route ............................................................................................................................. 449
Policy Route ............................................................................................................................ 453
Bandwidth Management ..........................................................................................................459
DNS ......................................................................................................................................... 475
Remote Management ..............................................................................................................487
UPnP ....................................................................................................................................... 515
Custom Application ..................................................................................................................525
ALG Screen ............................................................................................................................. 527

Contents Overview
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Reports, Logs and Maintenance .........................................................................................533
Reports .................................................................................................................................... 535
Logs Screens ........................................................................................................................... 547
Maintenance ............................................................................................................................575
SMT and Troubleshooting ...................................................................................................593
Introducing the SMT ................................................................................................................ 595
SMT Menu 1 - General Setup .................................................................................................. 603
WAN and Dial Backup Setup ...................................................................................................609
LAN Setup ............................................................................................................................... 623
Internet Access ........................................................................................................................ 629
DMZ Setup .............................................................................................................................. 635
Route Setup ............................................................................................................................. 639
Wireless Setup ........................................................................................................................ 643
Remote Node Setup ................................................................................................................ 649
IP Static Route Setup ..............................................................................................................659
Network Address Translation (NAT) ........................................................................................ 663
Introducing the ZyWALL Firewall ............................................................................................. 683
Filter Configuration .................................................................................................................. 685
SNMP Configuration ................................................................................................................ 701
System Information & Diagnosis ............................................................................................. 703
Firmware and Configuration File Maintenance ........................................................................ 715
System Maintenance Menus 8 to 10 ....................................................................................... 729
Remote Management ..............................................................................................................735
IP Policy Routing ..................................................................................................................... 739
Call Scheduling ........................................................................................................................ 747
Troubleshooting ....................................................................................................................... 751
Product Specifications ............................................................................................................. 757
Appendices and Index .........................................................................................................765