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Page 26 / 58 Scroll up to view Page 21 - 25
TD-8817
ADSL2/2+ Ethernet/USB Router User Guide
20
on.
¾
Static/Dynamic IP Address:
For PPPoE/PPPoA connection, you need to specify the public
IP address for this ADSL Router. The IP address can be either dynamically (via DHCP) or
given IP address provided by your ISP. For Static IP, you need to specify the IP address,
Subnet Mask and Gateway IP address.
¾
Default Route:
You should select
Yes
to configure the PVC as the default gateway to
internet from this device.
¾
MAC Spoofing:
MAC Spoofing feature allows you to change the assigned MAC address of
the ADSL Router to a different one, which may allow the bypassing of access control lists on
servers either hiding a computer on a network or allowing it to impersonate another computer.
You can select
Enable
and specify a MAC Address for the Router here, or keep the default
setting as
Disable.
4.
Bridge Mode
If you select this type of connection, the modem can be configured to act as a bridging device
between your LAN and your ISP. Bridges are devices that enable two or more networks to
communicate as if they are two segments of the same physical LAN.
Figure 4-8
)
Note:
After you finish the Internet configuration, please click SAVE to make the settings take effect.
4.3.2 LAN
Choose “
Interface Setup
→
LAN
” menu, and you will see the LAN screen (shown in Figure 4-9).
Please configure the parameters for LAN ports according to the descriptions below.
Page 27 / 58
TD-8817
ADSL2/2+ Ethernet/USB Router User Guide
21
Figure 4-9
¾
Router Local IP:
These are the IP settings of the LAN interface for the device. These
settings may be referred to as Private settings. You may change the LAN IP address if
needed. The LAN IP address is private to your internal network and cannot be seen on the
Internet.
•
IP Address:
Enter the Router’s local IP Address, then you can access to the Web-based
Utility via the IP Address, the default value is 192.168.1.1.
•
IP Subnet Mask:
Enter the Router’s Subnet Mask, the default value is 255.255.255.0.
•
Dynamic Route:
Select this option to specify the RIP (Routing Information protocol)
version for LAN interface, including
RIP1
,
RIP2-B
and
RIP2-M
. RIP2-B and RIP2-M are
both sent in RIP2 format, the difference is that RIP2-M using Multicast, while RIP2-B
using Broadcast format.
•
Direction:
Select this option to specify the RIP direction.
None
is for disabling the RIP
function.
Both
means the ADSL Router will periodically send routing information and
accept routing information, and then incorporate them into routing table.
IN only
means
the ADLS router will only accept but will not send RIP packet.
OUT only
means the
ADLS router will only send but will not accept RIP packet.
•
Multicast:
Select IGMP version, or disable the function. IGMP (Internet Group Multicast
Protocol) is a session-layer protocol used to establish membership in a multicast group.
The ADSL ATU-R supports both IGMP version 1 (
IGMP v1
) and
IGMP v2
. Select
“Disabled” to disable it.
•
IGMP Snoop:
Enable the IGMP Snoop function if you need.
¾
DHCP Server:
Select
Enabled
, then you will see the screen below (shown in Figure 4-10).
The Router will work as a DHCP Server, it becomes the default gateway for DHCP client
Page 28 / 58
TD-8817
ADSL2/2+ Ethernet/USB Router User Guide
22
connected to it. DHCP stands for Dynamic Host Control Protocol. The DHCP Server gives
out IP addresses when a device is booting up and request an IP address to be logged on to
the network. That device must be set as a DHCP client to obtain the IP address automatically.
By default, the DHCP Server is enabled. The DHCP address pool contains the range of the
IP address that will automatically be assigned to the clients on the network.
Figure 4-10
•
Starting IP Address:
Enter the starting IP address for the DHCP server's IP assignment.
Because the default IP address for the Router is 192.168.1.1, the default Start IP
Address is
192.168.1.2
, and the Start IP Address must be 192.168.1.2 or greater, but
smaller than 192.168.1.254.
•
IP Pool Count:
The max user pool size.
•
Lease Time:
The length of time for the IP lease. After the dynamic IP address has
expired, the user will be automatically assigned a new dynamic IP address. The default
is
259200
seconds.
•
DNS Relay:
If you want to disable this feature, you just need to set both Primary and
secondary DNS IP to 0.0.0.0. If you want to use DNS relay, you can setup DNS server IP
to 192.168.1.1 on their Computer. If not, the device will perform as no DNS relay.
•
Primary DNS Server:
Type in your preferred DNS server.
•
Secondary DNS Server:
Type in your preferred DNS server.
•
Current Pool Summary:
Click the button, you can view the IP addresses that the DHCP
Server gives out.
)
Note:
If
Use Auto Discovered DNS Server Only
is selected in DNS Relay, this router will accept the
first received DNS assignment from one of the PPPoA, PPPoE or MER/DHCP enabled PVC(s)
during the connection establishment. If
Use User Discovered DNS Server Only
is selected in
DNS Relay, it is necessary for you to enter the primary and optional secondary DNS server IP
addresses. After type in the address, click SAVE button to save it and invoke it.
¾
DHCP Relay:
Select
Relay
, then you will see the next screen (shown in Figure 4-11), the
Router will work as a DHCP Relay. A DHCP relay is a computer that forwards DHCP data
between computers that request IP addresses and the DHCP server that assigns the
Page 29 / 58
TD-8817
ADSL2/2+ Ethernet/USB Router User Guide
23
addresses. Each of the device's interfaces can be configured as a DHCP relay. If it is enabled,
the DHCP requests from local PCs will forward to the DHCP server runs on WAN side. To
have this function working properly, please run on router mode only, disable the DHCP server
on the LAN port, and make sure the routing table has the correct routing entry.
Figure 4-11
•
DHCP Server IP for Relay Agent:
Enter the DHCP server IP Address runs on WAN
side.
)
Note:
If you select
Disabled
, the DHCP function will not take effect.
Page 30 / 58
TD-8817
ADSL2/2+ Ethernet/USB Router User Guide
4.4
Advanced Setup
Choose “
Advanced Setup
”, you can see the next submenus:
Figure 4-12
Click any of them, and you will be able to configure the corresponding function.
4.4.1 Firewall
Choose “
Advanced Setup
→
Firewall
” menu, and you will see the next screen (shown in Figure
4-13).
Figure 4-13
¾
Firewall:
Select this option can automatically detect and block Denial of Service (DoS)
attacks, such as Ping of Death, SYN Flood, Port Scan and Land Attack.
¾
SPI:
If you enable SPI, all traffics initiated from WAN would be blocked, including DMZ,
Virtual Server, and ACL WAN side.
4.4.2 Routing
Choose “
Advanced Setup
→
Routing
” menu, and you will see the routing information in the next
screen (shown in Figure 4-14).
24

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