Ovislink OV804WV User Manual page 76

Use WAN Interface: as to BAS equipment, it is the IP address
of the downlink interface.
Obtain DNS server address automatically: to obtain the IP
address of the DNS server assigned by the uplink equipment
such as BAS.
Use the following DNS server addresses: If you want to
manually enter the IP address of the DNS server, select this
check box and enter the information in the fields.
Primary DNS server: enter the IP address of the primary DNS
server.
Secondary DNS server: enter the IP address of the secondary
DNS server provided by your ISP.
After proper modifications, click Next and the following page
appears.
In this page, you can modify the service name, and enable or
disable the NAT, firewall, IGMP multicast, and WAN service.
Figure 57 MER IGMP and WAN service
Enable NAT: select it to enable the NAT functions of the DSL
Router. If you do not want to enable NAT and wish the DSL
Router user to access the Internet normally, you must add a
route on the uplink equipment. Otherwise, the access to the
Internet fails. Normally, NAT should be enabled.
72