ZyXEL Communications Corporation NBG419N Manuel D’Utilisation
Chapter 12 WAN
NBG-419N Users Guide
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12.3 What You Need To Know
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 NBG-419N.
connection, as well as enable/disable some advanced features of your NBG-419N.
12.3.1 Configuring Your Internet Connection
Encapsulation Method
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.
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 Address
The WAN IP address is an IP address for the NBG-419N, which makes it accessible
from an outside network. It is used by the NBG-419N to communicate with other
devices in other networks. It can be static (fixed) or dynamically assigned by the
ISP each time the NBG-419N tries to access the Internet.
from an outside network. It is used by the NBG-419N to communicate with other
devices in other networks. It can be static (fixed) or dynamically assigned by the
ISP each time the NBG-419N 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).
subnet mask and DNS server IP address(es) (and a gateway IP address if you use
the Ethernet or ENET ENCAP encapsulation method).
DNS Server Address Assignment
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.
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 NBG-419N 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.
enter them in the DNS server fields.
2 If your ISP dynamically assigns the DNS server IP addresses (along with the NBG-
419Ns WAN IP address), set the DNS server fields to get the DNS server address
from the ISP.
from the ISP.
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