Dns Lookup; Configuring Dns Servers - D-Link NetDefend DFL-210 User Manual

3.9. DNS Lookup

3.9. DNS Lookup
A DNS server resolves a textual URL address into a numeric IP address. This allows the actual
physical IP address to change while the URL can stay the same.
URLs can be used in various areas of a NetDefendOS configuration where IP addresses are un-
known, or where it makes more sense to make use of DNS resolution instead of using static IP ad-
dresses.
To accomplish DNS resolution, NetDefendOS has a built-in DNS client that can be configured to
make use of up to three DNS servers.
Example 3.27. Configuring DNS Servers
In this example, the DNS client is configured to use one primary and one secondary DNS server, having IP ad-
dresses 10.0.0.1 and 10.0.0.2 respectively.
CLI
gw-world:/> set DNS DNSServer1=10.0.0.1 DNSServer2=10.0.0.2
Web Interface
1. Goto System > DNS
2. Enter the following:
• Primary DNS: 10.0.0.1
• Secondary DNS: 10.0.0.2
3. Click OK.
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Chapter 3. Fundamentals