Dns Relay; Static Routing - ZyXEL Communications Gateway 400 User Manual

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5.4.3

DNS Relay

A DNS (Domain Name Server) is required to resolve IP addresses. For example, the DNS server would

resolve google.com into 173.194.70.101 for IPv4 and into 2a00:1450:4005:800::1013 for IPv6. This

screen dialog allows you to set up your preferred DNS servers and configure how DNS requests are

handled.

DNS Relay:

default setting: enabled. The Gateway 400 acts as a DNS relay.

If this option is disabled, the DNS relay is inactive. In this case, a DNS server must be

entered manually at each terminal device.

DNS Cache:

Can only be enabled if DNS Relay has also been enabled. In this case, the Gateway

400 caches the DNS responses and uses them to respond to further requests by the

same (or any other) network device without querying the DNS again.

Activate User-Defined DNS Server: This setting is only required if you do not want to use the default

settings of your Internet service provider. If required, enter the IP address of the

DNS server. The DNS Server 1 and DNS Server 2 replace the Primary DNS and the

Secondary DNS from the Internet settings, respectively.

5.4.4

Here you can enter static routes for networks, which can be accessed via the WAN interface. Con-

nections to the LAN interfaces are configured under Network | LAN | Static Routing

on page

32).

Click New to open a screen dialog with the following settings:

Name:

Any name for the route.

Address Type:

IPv4 or IPv6, depending on the address range of the external network.

Destination Network: Address range of the network devices to be reached.

Gateway:

Address of the router to the destination network.

Interface:

Selection depends on the configured DSL or WAN interface.

Click Save to save the data of the route.

Configuration | Gateway 400 User Guide

("Static Routing"

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