Planet Technology ADE-4000 DNS Configuration, Disable DNS Proxy, Auto Discovery + User Configured

System Configuration

Figure 4-22:Bridge Filtering Screen

DNS Configuration

The DNS Configuration page allows you to set the configuration of DNS proxy. ADE-4000 supports the DNS proxy function. For the DHCP requests from local PCs, the DHCP server will set the LAN port IP as the default DNS server. Thus, all DNS query messages will come into LAN port first. The DNS proxy on the ADSL modem recorded the available DNS servers, and forward DNS query messages to one of DNS server.

Four DNS proxy modes available in ADE-4000:

Disable DNS Proxy

The LAN port does not process the DNS query message. For the DHCP requests from local PCs, the DHCP server will set the user-configured preferred DNS sever or alternate DNS server whichever is available as the DNS server. Then all DNS query messages will be directly sent to the DNS servers.

Use Auto Discovered DNS Servers Only

The DNS proxy will store the DNS server IP addresses obtained from DHCP client or PPP into the table. And all DNS query messages will be sent to one of the dy- namically obtained DNS servers.

Use User Configured DNS Servers Only

The DNS proxy will use the user-configured preferred DNS server and alternate DNS server. And all DNS query message will be sent to one of DNS servers.

Auto Discovery + User Configured

The DNS proxy’s table has all the IP addresses of dynamically obtained and user configured DNS servers.

Figure 4-23:DNS Configuration Screen

Note: Before the DNS proxy mode is enabled; please go to the Miscellaneous Configuration to enable the DNS proxy. Otherwise, DNS Proxy selection will not be valid.

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