ZyXEL Communications ZyXEL ZyAIR 100 - Manual (Page 69)

ZyWALL 10~100 Series Internet Security Gateway
LAN 5-1
Chapter 5
LAN Screens
This chapter describes how to configure LAN settings. Static DHCP does not apply to the ZyWALL
10.
5.1 LAN Overview
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.
5.2 DHCP Setup
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 set to
None, DHCP service will be disabled and you must have another DHCP server on your LAN, or else the
computer must be manually configured.
5.2.1 IP Pool Setup
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.
5.2.2 Primary and Secondary DNS Server
Refer to the IP Address and Subnet Mask section in the Wizard Setup chapter.
5.3 LAN TCP/IP
The ZyWALL has built-in DHCP server capability that assigns IP addresses and DNS servers to systems that
support DHCP client capability.
5.3.1 Factory LAN Defaults
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.