92 Chapter 5 Configuring the systemNN46110-5001 Enter a Management IP Address for the system. You need this address tocontact all system services, such as HTTP, FTP, and SNMP. To be accessible,the Management IP Address must map to the same network as one of theprivate interfaces. For example, if you are planning on assigning IP address10.2.3.3 with the subnet mask 255.255.0.0 to the private physical interface,the Management IP Address must reside in the 10.2.x.x network.If you configure the Nortel VPN Router on one network and plan to move it toanother network, change the Management IP address and private LANinterface addresses before moving the Nortel VPN Router. Then,communicate with the Nortel VPN Router using the new Management IPaddress from your browser's URL address field.2 Under Domain Identity, enter the DNS Host Name to identify the system.This should be the same name that is used by the DNS server to identify themanagement address of the Nortel VPN Router that is located on your privatenetwork. You can enter up to 64 characters maximum.3 In the DNS Domain Name box enter the Name of the Internet Domain intowhich this system is being placed. This must be the same Internet Domain asthe System Name in the Domain Name System (DNS) server. A domain is apart of the Internet naming hierarchy that refers to general groupings ofnetworks that are based on organization-type or geography. For example,mycompany.com is the domain name for a commercial (.com) enterprise.4 The DNS Proxy Enabled/Disabled check box allows you to select whetheryou want the DNS Proxy to act as a DNS server to the private side. It itenabled by default.5 Click on the Split DNS check box if you have a split name space.6 For Primary, enter the address of the DNS server that the DNS proxy tries tocontact first.7 For Second, enter an address for the Second Domain Name System (DNS)server. If the Primary DNS server doesn’t respond in a few seconds, service isrequested of the Second DNS server (if present).8 For Third, enter an address for the Third Domain Name System (DNS)server. If the Primary and Secondary DNS servers doesn’t respond, service isrequested of the third DNS server (if present).9 For Fourth, enter an address for the Fourth Domain Name System (DNS)server. If the preceding servers doesn’t respond, service is requested of thefourth DNS server (if present).