ZyXEL ZyWALL 2 Plus User Guide - Page 494
LAN and DMZ IP addresses must be on separate subnets.
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Chapter 30 LAN Setup Table 178 Menu 3.2: DHCP Ethernet Setup Fields FIELD DESCRIPTION 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. 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. 494 Table 179 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. ZyWALL 2 Plus User's Guide