ZyWALL 5/35/70 Series User’s Guide

1The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.

2If your ISP dynamically assigns the DNS server IP addresses (along with the ZyWALL’s WAN IP address), set the DNS server fields to get the DNS server address from the ISP.

3You can manually enter the IP addresses of other DNS servers. These servers can be public or private. A DNS server could even be behind a remote IPSec router (see Section 26.5.1 on page 415).

7.11WAN MAC Address

Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02.

You can configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Once it is successfully configured, the address will be copied to the "rom" file (ZyNOS configuration file). It will not change unless you change the setting or upload a different "rom" file.

Table 38 Example of Network Properties for LAN Servers with Fixed IP Addresses

Choose an IP address

192.168.1.2-192.168.1.32; 192.168.1.65-192.168.1.254.

 

 

Subnet mask

255.255.255.0

 

 

Gateway (or default route)

192.168.1.1(ZyWALL LAN IP)

 

 

7.12 WAN

To change your ZyWALL's WAN ISP, IP and MAC settings, click NETWORK, WAN and then the WAN, WAN1 or WAN2 tab. The screen differs by the encapsulation.

Note: The WAN1 and WAN2 IP addresses of a ZyWALL with multiple WAN ports must be on different subnets.

7.12.1 WAN Ethernet Encapsulation

For ISPs (such as Telstra) that send UDP heartbeat packets to verify that the customer is still online, please create a WAN-to-WAN/ZyWALLfirewall rule for those packets. Contact your ISP to find the correct port number.

The screen shown next is for Ethernet encapsulation.

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Chapter 7 WAN Screens