ZyXEL Communications ZYWALL 2 WG User manual

www.zyxel.com
ZyWALL 2WG
Internet Security Appliance
User’s Guide
Version 4.03
12/2007
Edition 1

About This User's Guide
ZyWALL 2WG User’s Guide 3
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.
• 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 2WG 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 2WG 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 DSLAM 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.

Safety Warnings
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• Antenna Warning! This device meets ETSI and FCC certification requirements when
using the included antenna(s). Only use the included antenna(s).
• If you wall mount your device, make sure that no electrical lines, gas or water pipes will
be damaged.
This product is recyclable. Dispose of it properly.

Safety Warnings
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Contents Overview
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Contents Overview
Introduction ............................................................................................................................ 51
Getting to Know Your ZyWALL .................................................................................................. 53
Introducing the Web Configurator .............................................................................................. 57
Wizard Setup ............................................................................................................................. 81
Tutorial ..................................................................................................................................... 101
Registration ............................................................................................................................. 141
Network and Wireless ..........................................................................................................145
LAN Screens ........................................................................................................................... 147
Bridge Screens ........................................................................................................................ 159
WAN Screens .......................................................................................................................... 165
DMZ Screens ........................................................................................................................... 201
Wireless LAN ............................................................................................................................211
Security ................................................................................................................................. 237
Firewall .................................................................................................................................... 239
Content Filtering Screens ........................................................................................................ 271
Content Filtering Reports ......................................................................................................... 293
IPSec VPN ............................................................................................................................... 301
Certificates ............................................................................................................................... 349
Authentication Server .............................................................................................................. 379
Advanced .............................................................................................................................. 383
Network Address Translation (NAT) ........................................................................................ 385
Static Route ............................................................................................................................. 401
Policy Route ............................................................................................................................ 405
Bandwidth Management ...........................................................................................................411
DNS ......................................................................................................................................... 427
Remote Management ..............................................................................................................439
UPnP ....................................................................................................................................... 461
Custom Application .................................................................................................................. 471
ALG Screen ............................................................................................................................. 473
Logs and Maintenance ........................................................................................................ 479
Logs Screens ........................................................................................................................... 481
Maintenance .............................................................................................................................511

Contents Overview
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SMT ....................................................................................................................................... 529
Introducing the SMT ................................................................................................................ 531
SMT Menu 1 - General Setup .................................................................................................. 539
WAN and Dial Backup Setup ................................................................................................... 545
LAN Setup ............................................................................................................................... 559
Internet Access ........................................................................................................................ 565
DMZ Setup .............................................................................................................................. 571
Route Setup ............................................................................................................................. 575
Wireless Setup ........................................................................................................................ 579
Remote Node Setup ................................................................................................................ 583
IP Static Route Setup .............................................................................................................. 591
Network Address Translation (NAT) ........................................................................................ 595
Introducing the ZyWALL Firewall ............................................................................................. 615
Filter Configuration .................................................................................................................. 617
SNMP Configuration ................................................................................................................ 633
System Information & Diagnosis ............................................................................................. 635
Firmware and Configuration File Maintenance ........................................................................ 647
System Maintenance Menus 8 to 10 ....................................................................................... 661
Remote Management ..............................................................................................................669
IP Policy Routing ..................................................................................................................... 673
Call Scheduling ........................................................................................................................ 681
Troubleshooting and Specifications .................................................................................. 685
Troubleshooting ....................................................................................................................... 687
Product Specifications ............................................................................................................. 693
Appendices and Index ......................................................................................................... 703