Chapter 4 Lan Screens; Lan Overview; Dhcp Setup; Ip Pool Setup - ZyXEL Communications ZyWall 70 User Manual

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This chapter describes how to configure LAN settings. This chapter is only applicable when

the ZyWALL is in router mode.

Local Area Network (LAN) is a shared communication system to which many computers are

attached. The LAN screens can help you configure a LAN DHCP server, manage IP addresses,

and partition your physical network into logical networks.

DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual

clients to obtain TCP/IP configuration at start-up from a server. You can configure the

ZyWALL as a DHCP server or disable it. When configured as a server, the ZyWALL provides

the TCP/IP configuration for the clients. If DHCP service is disabled, you must have another

DHCP server on your LAN, or else the computer must be manually configured.

The ZyWALL is pre-configured with a pool of IP addresses for the DHCP clients (DHCP

Pool). See the product specifications in the appendices. Do not assign static IP addresses from

the DHCP pool to your LAN computers.

The ZyWALL has built-in DHCP server capability that assigns IP addresses and DNS servers

to systems that support DHCP client capability.

The LAN parameters of the ZyWALL are preset in the factory with the following values:

• IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits)

• DHCP server enabled with 128 client IP addresses starting from 192.168.1.33.

Chapter 4 LAN Screens

ZyWALL 70 User's Guide