ZyXEL Communications ZyWALL 70 User manual

ZyWALL 70
Internet Security Gateway
Quick Start Guide
Version 3.64
3/2005
Table of Contents
ENGLISH 1
DEUTSCH 23
ESPAÑOL 47
FRANÇAIS 71
ITALIANO 95
中文 119

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1
Overview
The ZyWALL 70 is a load-balancing, dual WAN firewall with VPN, bandwidth management, content filtering
and many other features. You can use it as a transparent firewall and not reconfigure your network nor
configure the ZyWALL’s routing features. The ZyWALL increases network security by providing DMZ ports for
use with publicly accessible servers. This guide covers the initial connections and configuration needed to
start using the ZyWALL in your network.
See the User’s Guide for more information on all features.
You may need your Internet access information.
This guide is divided into the following sections.
1 Hardware Connections
You need the following.
1Hardware Connections
2Accessing the Web Configurator
3Bridge Mode
4Internet Access Setup
5DNS
6NAT
7Firewall
8VPN Rule Setup
9myZyXEL.com Product Registration
10External Database Content Filtering
11Troubleshooting
ZyWALL Computer Ethernet Cables Power Cord
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2
Do the following to make hardware connections for initial setup.
1Use an Ethernet cable to connect the LAN port to a computer. You can also use Ethernet cables to
connect public servers (web, e-mail, FTP, etc.) to the DMZ ports.
2Use another Ethernet cable(s) to connect the WAN 1 and/or WAN 2 port to an Ethernet jack with Internet
access.
3Use the included power cord to connect the power socket (on the rear panel) to a power outlet
4Push the power switch to the on position and look at the front panel. The PWR LED turns on. The SYS
LED blinks while performing system testing and then stays on if the testing is successful. The ACT, CARD,
LAN, DMZ, and WAN LEDs turn on and stay on if the corresponding connections are properly made.

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2 Accessing the Web Configurator
Use this section to configure the WAN 1 interface for Internet access.
5The HOME screen opens.
The ZyWALL is in router mode by default. Continue to the next step if you want to use routing features
such as NAT, DHCP and VPN.
Go to Section 3 if you prefer to use the ZyWALL as a transparent firewall.
1Launch your web browser. Enter 192.168.1.1 (the
ZyWALL’s default IP address) as the address.
If the login screen does not display, see Section
11.1 to set your computer’s IP address.
2Click Login (the default password 1234 is already
entered).
3Change the login password by entering a new
password and clicking Apply.
4Click Apply to replace the ZyWALL’s default
digital certificate.

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3 Bridge Mode
When you set the ZyWALL to bridge mode, it functions as a transparent firewall. Do the following to set the
ZyWALL to bridge mode.
6Check the Network
Status table. If the
WAN 1 status is not
Down and there is an
IP address, go to
Section 5.
If the WAN 1 status is
Down (or there is not
an IP address), click
Internet Access and
use Section 4 to
configure WAN 1.
Use the NETWORK
WAN screens if you
need to configure
WAN 2. You can also
configure load
balancing between the
WAN ports.

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5
4 Internet Access Setup
Enter the Internet access information exactly as given to you.
If you were given an IP address to use, select Static in the IP Address Assignment drop-down list box and
enter the information provided.
Note: The fields vary depending on what you select in the Encapsulation field. Fill them in with the
information provided by the ISP or network administrator.
Click Finish when you are done.
1Click MAINTENANCE in
the navigation panel and
then Device Mode.
2Select Bridge and
configure a (static) IP
address subnet mask and
gateway IP address for
the ZyWALL’s LAN, WAN,
DMZ and WLAN
interfaces.
3Click Apply. The ZyWALL
restarts.
Skip to Section 5 if you have
servers that you need to be
accesible from the WAN.

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•PPP over Ethernet or PPTP Encapsulation
Select Nailed-Up when you want your connection up all the time (this could be expensive if your ISP bills you
for Internet usage time instead of a flat monthly fee).
To not have the connection up all the time, specify an idle time-out period (in seconds) in Idle Timeout.
•Ethernet Encapsulation
Configure a Roadrunner service in the
NETWORK WAN screens (use the WAN 1 tab).

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5 DMZ
The DeMilitarized Zone (DMZ) allows public servers (web, e-mail, FTP, etc.) to be visible to the outside world
and still have firewall protection from DoS (Denial of Service) attacks.
Unlike the LAN, the ZyWALL does not assign TCP/IP configuration via DHCP to computers connected to the
DMZ ports. Configure the computers with static IP addresses (in the same subnet as the DMZ port's IP
address) and DNS server addresses. Use the ZyWALL's DMZ IP address as the default gateway.
Do the following to configure the DMZ if the ZyWALL is in routing mode.
Note: You do not need to configure DMZ with bridge mode, skip to Section 7.
1Click DMZ in the navigation panel.

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6 NAT
NAT (Network Address Translation - NAT, RFC 1631) means the translation of an IP address in one network
to a different IP address in another. You can use the NAT Address Mapping screens to have the ZyWALL
translate multiple public IP addresses to multiple private IP addresses on your LAN (or DMZ).
The following example allows access from the WAN to an HTTP (web) server on the DMZ. The server has a
private IP address of 10.0.0.20.
2Specify an IP address and subnet mask for the DMZ
interface.
If you use private IP addresses on the DMZ, use NAT to
make the servers publicly accessible (see Section 6).
A public IP address must be on a separate subnet from
the WAN port’s public IP address. If you do not configure
NAT for the public IP addresses on the DMZ, the ZyWALL
routes traffic to the public IP addresses on the DMZ
without performing NAT. This may be useful for hosting
servers for NAT unfriendly applications.
3Click Apply.

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7 Firewall
You can use the ZyWALL without configuring the firewall.
The ZyWALL’s firewall is pre-configured to protect your LAN from attacks from the Internet. By default, no
traffic can enter your LAN unless a request was generated on the LAN first. The ZyWALL allows access to the
DMZ from the WAN or LAN, but blocks traffic from the DMZ to the LAN.
If you are using the ZyWALL in router mode, continue with the next section. For bridge mode, skip to Section
9.
1Click NAT in the navigation panel
and then Port Forwarding.
2Select the Active check box.
3Type a name for the rule.
4Type the port number that the
service uses.
5Type the HTTP server’s IP address.
6Click Apply.