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Chapter 9 WAN
NBG7815 User’s Guide
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9.3 Wha t Yo u Ne e d To Kno w
The information in this section can help you configure the screens for your WAN connection, as well as
enable/disable some advanced features of your NBG7815.
9.3.1 C o nfig uring Yo ur Inte rne t C o nne c tio n
Enc a psula tio n Me tho d
Encapsulation is used to include data from an upper layer protocol into a lower layer protocol. To set up
a WAN connection to the Internet, you need to use the same encapsulation method used by your ISP
(Internet Service Provider). If your ISP offers a dial-up Internet connection using PPPoE (PPP over
Ethernet) or PPTP (Point-to-Point Tunneling Protocol), they should also provide a username and password
(and service name) for user authentication.
WAN IP Addre ss
The WAN IP address is an IP address for the NBG7815, which makes it accessible from an outside
network. It is used by the NBG7815 to communicate with other devices in other networks. It can be static
(fixed) or dynamically assigned by the ISP each time the NBG7815 tries to access the Internet.
If your ISP assigns you a static WAN IP address, they should also assign you the subnet mask and DNS
server IP address(es) (and a gateway IP address if you use the Ethernet or ENET ENCAP encapsulation
method).
DNS Se rve r Addre ss Assig nm e nt
Use Domain Name System (DNS) to map a domain name to its corresponding IP address and vice versa,
for instance, the IP address of www.zyxel.com is 204.217.0.2. The DNS server is extremely important
because without it, you must know the IP address of a computer before you can access it.
The NBG7815 can get the DNS server addresses in the following ways.
1
The ISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up.
If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.
2
If your ISP dynamically assigns the DNS server IP addresses (along with the NBG7815’s WAN IP address),
set the DNS server fields to get the DNS server address from the ISP.
WAN MAC Addre ss
The MAC address screen allows users to configure the WAN port's MAC address by either using the
factory default or cloning the MAC address from a computer on your LAN. Choose
Fa c to ry De fa ult
to
select the factory assigned default MAC Address.
Otherwise, click
C lo ne the c o m pute r's MAC a ddre ss - IP Addre ss
and enter the IP address of the
computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be
copied to configuration file. It is recommended that you clone the MAC address prior to hooking up the
WAN Port.