Chapter 31 LAN Setup

Table 210 Menu 3.2: DHCP Ethernet Setup Fields

FIELD

DESCRIPTION

First DNS Server

The ZyWALL passes a DNS (Domain Name System) server IP address (in the

Second DNS

order you specify here) to the DHCP clients.

Server

Select From ISP if your ISP dynamically assigns DNS server information (and the

Third DNS

ZyWALL's WAN IP address). The IP Address field below displays the (read-only)

Server

DNS server IP address that the ISP assigns.

 

Select User-Definedif you have the IP address of a DNS server. Enter the DNS

 

server's IP address in the IP Address field below. If you chose User-Defined, but

 

leave the IP address set to 0.0.0.0, User-Definedchanges to None after you save

 

your changes. If you set a second choice to User-Defined, and enter the same IP

 

address, the second User-Definedchanges to None after you save your changes.

 

Select DNS Relay to have the ZyWALL act as a DNS proxy. The ZyWALL's LAN IP

 

address displays in the IP Address field below (read-only). The ZyWALL tells the

 

DHCP clients on the LAN that the ZyWALL itself is the DNS server. When a

 

computer on the LAN sends a DNS query to the ZyWALL, the ZyWALL forwards

 

the query to the ZyWALL's system DNS server (configured in menu 1) and relays

 

the response back to the computer. You can only select DNS Relay for one of the

 

three servers; if you select DNS Relay for a second or third DNS server, that choice

 

changes to None after you save your changes.

 

Select None if you do not want to configure DNS servers. If you do not configure a

 

DNS server, you must know the IP address of a machine in order to access it.

 

 

DHCP Server

If Relay is selected in the DHCP field above, then type the IP address of the actual,

Address

remote DHCP server here.

 

 

Use the instructions in the following table to configure TCP/IP parameters for the LAN port.

"LAN and DMZ IP addresses must be on separate subnets.

Table 211 Menu 3.2: LAN TCP/IP Setup Fields

FIELD

DESCRIPTION

TCP/IP Setup:

 

 

 

IP Address

Enter the IP address of your ZyWALL in dotted decimal notation

 

 

IP Subnet Mask

Your ZyWALL will automatically calculate the subnet mask based on the IP

 

address that you assign. Unless you are implementing subnetting, use the subnet

 

mask computed by the ZyWALL.

 

 

RIP Direction

Press [SPACE BAR] and then [ENTER] to select the RIP direction. Options are:

 

Both, In Only, Out Only or None.

 

 

Version

Press [SPACE BAR] and then [ENTER] to select the RIP version. Options are:

 

RIP-1,RIP-2B or RIP-2M.

 

 

Multicast

IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to

 

establish membership in a Multicast group. The ZyWALL supports both IGMP

 

version 1 (IGMP-v1) and version 2 (IGMP-v2). Press [SPACE BAR] and then

 

[ENTER] to enable IP Multicasting or select None (default) to disable it.

 

 

Edit IP Alias

The ZyWALL supports three logical LAN interfaces via its single physical Ethernet

 

interface with the ZyWALL itself as the gateway for each LAN network. Press

 

[SPACE BAR] to select Yes and then press [ENTER] to display menu 3.2.1

 

 

When you have completed this menu, press [ENTER] at the prompt [Press ENTER to Confirm…] to save your configuration, or press [ESC] at any time to cancel.

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ZyWALL 2WG User’s Guide