ZyXEL Communications ZyXEL ZyWALL 2WG - Manual (Page 500)

Chapter 30 LAN Setup
ZyWALL 2WG User’s Guide
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Use the instructions in the following table to configure TCP/IP parameters for the LAN port.
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LAN and DMZ IP addresses must be on separate subnets.
First DNS Server
Second DNS
Server
Third DNS
Server
The ZyWALL passes a DNS (Domain Name System) server IP address (in the
order you specify here) to the DHCP clients.
Select From ISP if your ISP dynamically assigns DNS server information (and the
ZyWALL's WAN IP address). The IP Address field below displays the (read-only)
DNS server IP address that the ISP assigns.
Select User-Defined if 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-Defined changes 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-Defined changes 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
Address
If Relay is selected in the DHCP field above, then type the IP address of the actual,
remote DHCP server here.
Table 203 Menu 3.2: DHCP Ethernet Setup Fields
FIELD DESCRIPTION
Table 204 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.