40NETWORK TYPE Select a type of network connection.DHCP DVR automatically get IP varying from time to time from networkand does not therefore need to be set.STATIC Assigned to an Internet service provider (ISP) to be its permanentaddress on the Internet.DNS (PRIMARY) The address for the primary DNS serverDNS (SECONDARY) The address for the secondary DNS serverDDNS Enable/disable using domain name address through DDNSserver. “ON” mode, DDNS server name appears for domainregistration.DDNS 1: Select this type to use the default (BESTDDNS) server.DDNS 2: Select this type when wants to use other general-purpose DDNS Server.DDNS INTERVAL: Set the connection interval (5-60minutes)NETWORK STREAM Set the value for network streaming. (Resoluiton, FPS, Quality)3-8-1. Port, Network Audio Port and Web PortWhen you connect one or more DVRs to a network through an IP sharing device, each device must have aunique TCP port number for access to each unit from outside the LAN. Also, the IP sharing device must beconfigured for port forwarding so when each port is accessed on the IP sharing device, it will forward to theappropriate DVR.Note: This port number is listed next to the Port menu option in the Network Setup screen. If you plan toaccess the DVR units only from within the same LAN, the TCP port does not have to be changed.3-8-2. Network Types3-8-2-1. DHCPAn IP address is automatically assigned by the DHCP server, which automatically assigns IP address andother parameters to new devices.When ADSL or other network being used adopts variable IP method, not fixed IP. This option is used as away to automatically get IP address.Network access beyond a routerIn order to access the DVR remotely beyond a router (firewall), the user must open TCP port forcommand level, live/storage channels. User need to open port number 5445 and 5446.If the DVR supports remote setup and upgrade function over the network, user need to open additionalport number 80.Web viewer Network access beyond RouterIn order to access beyond Router (Firewall), user must open 1 TCP port that is set on NETWORK >WEB PORT. If this port is not open properly, user cannot access DVR using direct Web viewer(Example: When NETWORK > WEB PORT is set as 80, 80 TCP port of IP address of DVR must beopen.)