Chapter 10 WAN
NBG6815 User’s Guide
78
10.5 NAT
Use this screen to change your NBG6815’s NAT (Network Address Translation) settings. Click
Expert Mode > WAN > NAT.
10.5.1 General Screen
Use this screen to enable NAT, set a default server and configure your NBG6815’s port forwarding
settings to forward incoming service requests to the server(s) on your local network
. Click Expert
Mode > WAN > NAT > General.
IPv6 DNS Server
This is available only when you select IPv4 Only in the IPv4/IPv6 field and set IPv6 Tunneling to 6RD,
6in4 or 6to4.
First DNS Server
Second DNS
Server
Third DNS Server
Specify the DNS server IPv6 address assigned by the ISP.
IPv6 DNS Server
This is available only when you select Dual Stack or IPv6 Only in the IPv4/IPv6 field.
First DNS Server
Second DNS
Server
Third DNS Server
Select Obtained From ISP to have the NBG6815 get the IPv6 DNS server addresses
from the ISP automatically.
Select User-Defined and enter the IPv6 DNS server address assigned by the ISP to
have the NBG6815 use the IPv6 DNS server addresses you configure manually.
Select None if you do not want to configure DNS servers. If you do not configure a DNS
server, you must know the IPv6 address of a computer in order to access it.
Multicast Setup
Multicast Setup Select IGMPv1/v2 to enable multicasting. This applies to traffic routed from the WAN to
the LAN.
Select None to disable this feature. This may cause incoming traffic to be dropped or
sent to all connected network devices.
Auto-Subnet Configuration
Enable Auto-IP-
Change Mode
Select this option to have the NBG6815 change its LAN IP address to 10.0.0.1 or
192.168.1.1 accordingly when the NBG6815 gets a dynamic WAN IP address in the same
subnet as the LAN IP address 192.168.1.1 or 10.0.0.1.
The NAT, DHCP server and firewall functions on the NBG6815 are still available in this
mode.
Apply Click Apply to save your changes back to the NBG6815.
Cancel Click Cancel to begin configuring this screen afresh.
Table 20 Network > WAN > Internet Connection: PPPoE Encapsulation (continued)
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