19216811.liveChapter 3:Accessing Internet
Unnumbered IP over ATM (IPoA)+NAT
Description:
If you apply for multiple IP addresses from your ISP, you can assign these public IP addresses to the
ADSL Router and public server, e.g., Web or FTP server. Typically the first IP is network address,
the second is used as router IP address and the last one is subnet broadcasting. Other remaining IP
addresses can be assigned to PCs on the LAN.
The following example uses the LAN IP address ranging from 10.3.75.49 to 10.3.75.54 and the
subnet mask for LAN is 255.255.255.248. The WAN address is 10.3.70.1, and the subnet mask for
WAN is 255.255.255.252.
In such circumstance, we enable NAT function but not assign any WAN IP.
Configuration:
1.
Start up your browser and type
192.168.1.1
as the address to enter this ADSL web-based
manager.
2.
Go to
Quick Start -Quick Setup
. Uncheck
Auto Scan Internet Connection (PVC)
. Type in
the
VCI
and
VPI
value. Then click the
Next
button.
VPI – 0
VCI – 32
3.
On the
Configure Internet Connection -Connection Type
page, select the
IP over ATM
(IPoA)
then click the
Next
button.
4.
In the
WAN IP Settings
page, select
None
for WAN IP address settings. Then, select
Use the
following DNS Server Address
. Type in the Primary DNS server and Secondary DNS server.
Click
Next
for next page.
Primary DNS server: 168.95.1.1
Secondary DNS server: 168.95.192.1
5.
Check the
Enable NAT
box. And click
Next
.
6.
In the
Configure LAN side Settings
page, type in the IP address and subnet mask for your
LAN.
Primary
IP Address
:
192.168.1.1
Subnet mask
:
255.255.255.0
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