Chapter 5 Lan Screens; Lan Overview; Dhcp Setup; Ip Pool Setup - ZyXEL Communications ZyWALL 10W User Manual

Internet security gateway

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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 32 IP addresses starting from 192.168.1.33 to 192.168.1.64.

This configuration leaves 31 IP addresses (excluding the ZyWALL itself) in the lower range for other server

computers, for instance, servers for mail, FTP, TFTP, web, etc., that you may have.

Use the LAN IP screen to configure the DNS server information that the ZyWALL sends to the DHCP client

devices on the LAN.

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 32 client IP addresses starting from 192.168.1.33.

ZyWALL Series Internet Security Gateway

This chapter describes how to configure LAN settings.

Troubleshooting

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