D-Link DFL-2500 User Guide - Page 120
Domain Name System DNS
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12 CHAPTER DNS Domain Name System (DNS) can be considered as a gigantic distributed database that is used to translate from computer names to their IP addresses. DNS is used within the firewall whenever there is need to translate a domain name to an IP address. Also, the DHCP server within the firewall can hand out the DNS servers configured in the firewall to all clients that request an IP lease. The example below describes how to configure DNS servers in D-Link firewalls. The configured servers are used by the internal DNS client as well as other subsystems such as the DHCP server. Example: Configuring DNS server(s) WebUI : System → DNS: Primary Server: Enter the IP address of the primary DNS server or select the address object from the dropdown list (if the address of the server has been defined in Address Book). Secondary Server: (Optional) Tertiary Server: (Optional) Then click OK. 101
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