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Chapter 5: Configuring the ADSL Gateway
The Setup Tab
ADSL Gateway
RFC 1483 Routed
If you are required to use RFC 1483 Routed, then select
RFC 1483 Routed
.
Internet IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP
will provide you with the IP Address you need to specify here.
Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask.
Gateway. Your ISP will provide you with the default Gateway Address, which is the ISP server’s IP address.
Primary DNS (Required) and Secondary DNS (Optional). Your ISP will provide you with at least one DNS
(Domain Name System) Server IP Address.
IPoA
If you are required to use Internet Protocol over ATM (Asynchronous Transfer Mode), then select IPoA.
Internet IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP
will provide you with the IP Address you need to specify here.
Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask.
Gateway. Your ISP will provide you with the default Gateway Address, which is the ISP server’s IP address.
Primary DNS (Required) and Secondary DNS (Optional). Your ISP will provide you with at least one DNS
(Domain Name System) Server IP Address.
Figure 5-5: RFC 1483 Routed
Figure 5-6: IPoA
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Chapter 5: Configuring the ADSL Gateway
The Setup Tab
ADSL Gateway
RFC 2516 PPPoE
Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If
you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do,
you will have to enable PPPoE.
Service Name. Enter the name of your PPPoE service in this field.
User Name and Password. Enter the User Name and Password provided by your ISP.
Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection
after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has
been terminated due to inactivity, Connect on Demand enables the Gateway to automatically re-establish
your connection as soon as you attempt to access the Internet again. To use this option, click the
Connect
on Demand
radio button. In the
Max Idle Time
field, enter the number of minutes you want to have
elapsed before your Internet connection terminates.
Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet
connection. If you are disconnected, then the Gateway will automatically re-establish your connection. To
use this option, click the
Keep Alive
radio button. In the
Redial Period
field, specify how often you want
the Gateway to check the Internet connection.
The default Redial Period is
20
seconds.
RFC 2364 PPPoA
Some DSL-based ISPs use PPPoA (Point-to-Point Protocol over ATM) to establish Internet connections. If you
are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoA. If they do, you
will have to enable PPPoA.
User Name and Password. Enter the User Name and Password provided by your ISP.
Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection
after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has
been terminated due to inactivity, Connect on Demand enables the Gateway to automatically re-establish
your connection as soon as you attempt to access the Internet again. To use this option, click the
Connect
on Demand
radio button. In the
Max Idle Time
field, enter the number of minutes you want to have
elapsed before your Internet connection terminates.
Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet
connection. If you are disconnected, then the Gateway will automatically re-establish your connection. To
use this option, click the
Keep Alive
radio button. In the
Redial Period
field, specify how often you want
the Gateway to check the Internet connection.
The default Redial Period is
20
seconds.
Figure 5-8: RFC 2364 PPPoA
Figure 5-7: RFC 2516 PPPoE
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17
Chapter 5: Configuring the ADSL Gateway
The Setup Tab
ADSL Gateway
Bridged Mode Only
If you are using your Gateway as a bridge, which makes the Gateway act like a stand-alone modem, select
Bridged Mode Only
. All NAT and routing settings are disabled in this mode.
Optional Settings (required by some ISPs)
Host Name and Domain Name. These fields allow you to supply a host and domain name for the Gateway.
Some ISPs require these names as identification. You may have to check with your ISP to see if your
broadband Internet service has been configured with a host and domain name. In most cases, you can leave
these fields blank.
MTU and Size. The MTU (Maximum Transmission Unit) setting specifies the largest packet size permitted for
network transmission. Select
Manual
and enter the value desired in the
Size
field. It is recommended that
you leave this value in the 1200 to 1500 range. By default, MTU is configured automatically.
Network Setup
Router IP. The values for the Gateway’s Local IP Address and Subnet Mask are shown here. In most cases,
keep the default values.
Local IP Address. The default value is
192.168.1.1
.
Subnet Mask. The default value is
255.255.255.0
.
Network Address Server Settings (DHCP). Configure the Gateway’s Dynamic Host Configuration Protocol
(DHCP) settings in this section.
Local DHCP Server. A Dynamic Host Configuration Protocol (DHCP) server automatically assigns an IP
address to each computer on your network for you. Unless you already have one, it is highly
recommended that you leave the Gateway enabled as a DHCP server. You can also use the Gateway in
DHCP Relay mode.
DHCP Relay Server. If you enable the DHCP Relay mode for the
Local DHCP Server
setting, enter the IP
address for the DHCP server in the fields provided.
Advanced: This button displays a window that lets you reserve addresses in the DHCP range for particular
machines.
Autodetect LAN DHCP Server: Enable this function if you already have a DHCP server on your LAN and you
wish to continue using it.
Figure 5-10: Optional Settings
Figure 5-9: Bridged Mode Only
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Chapter 5: Configuring the ADSL Gateway
The Setup Tab
ADSL Gateway
Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. This value
must be 192.168.1. 2 or greater, because the default IP address for the Gateway is 192.168.1.1.
Maximum Number of DHCP Users. Enter the maximum number of users/clients that can obtain an IP
address. The number will vary depending on the starting IP address entered.
Client Lease Time. The Client Lease Time is the amount of time a computer will be allowed connection to
the Gateway with its current dynamic IP address. Enter the amount of time, in minutes, that the computer
will be “leased” this dynamic IP address.
Static DNS 1-3. The Domain Name System (DNS) is how the Internet translates domain or website names
into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. You
can enter up to three DNS Server IP Addresses here. The Gateway will use these for quicker access to
functioning DNS servers.
WINS. The Windows Internet Naming Service (WINS) converts NetBIOS names to IP addresses. If you use a
WINS server, enter that server’s IP address here. Otherwise, leave this field blank.
Time Setting. Select the appropriate time zone for the Gateway’s location. If desired, check the
Automatically adjust clock for daylight saving changes
checkbox.
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes.
The DDNS Tab
The Gateway offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and
domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or
other server behind the Gateway.
Before you can use this feature, you need to sign up for DDNS service at DynDNS.org or TZO.com.
DDNS
DDNS Service. If your DDNS service is provided by DynDNS.org, then select
DynDNS.org
from the drop-down
menu. If your DDNS service is provided by TZO.com, then select
TZO.com
from the drop-down menu.To disable
DDNS Service, select
Disabled
.
Figure 5-11: Advanced DHCP
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Chapter 5: Configuring the ADSL Gateway
The Setup Tab
ADSL Gateway
DynDNS.org
User Name, Password, and Host Name. Enter the User Name, Password, and Host Name of the account you
set up with DynDNS.org.
Internet IP Address. The Gateway’s current Internet IP Address is displayed here. Because it is dynamic, it will
change.
Status. The status of the DDNS service connection is displayed here.
TZO.com
E-mail Address, Password, and Domain Name. Enter the E-mail Address, Password, and Domain Name of the
account you set up with TZO.
Internet IP Address. The Gateway’s current Internet IP Address is displayed here. Because it is dynamic, this
will change.
Status. The status of the DDNS service connection is displayed here.
When finished making your changes on this tab, click the
Save Settings
button to save these changes, or click
the
Cancel Changes
button to undo your changes.
Figure 5-13: TZO.com
Figure 5-12: DynDNS.org
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