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Page 21 / 101 Scroll up to view Page 16 - 20
21
DI-724U User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
LAN is short for Local Area Network. This is considered your internal network. These are
the IP settings of the LAN interface for the DI-724U. 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.
LAN
Home > LAN
IP Address:
The IP address of your router on the local area network. Your
local area network settings are based on the address assigned
here. For example, 192.168.0.1.
Default Subnet
Mask:
The subnet mask of your router on the local area network.
DNS Relay:
When DNS Relay is enabled, the router plays the role of a
DNS server. DNS requests sent to the router are forwarded
to the ISP’s DNS server. You should disable DNS relay if you
implement a LAN-side DNS server as a virtual server.
Local Domain
Name:
This entry is optional. Enter a domain name for the local network.
The DHCP server will give this domain name to the computers
on the LAN. So, for example, if you enter mynetwork.net here,
and you have a PC with a name of chris, that PC will be known as
chris.mynetwork.net. Note, however, if the router’s WAN settings
specify Dynamic IP Address, and the ISP’s DHCP server assigns
a domain name to the router, that domain name will override any
name you enter here.
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Page 22 / 101
22
DI-724U User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
DHCP
stands for
Dynamic Host Control Protocol
. The DI-724U has a built-in DHCP
server. The DHCP Server will automatically assign an IP address to the computers on
the LAN/private network. Be sure to set your computers to be DHCP clients by setting
their TCP/IP settings to “Obtain an IP Address Automatically.” When you turn your
computers on, they will automatically load the proper TCP/IP settings provided by the
DI-724U. The DHCP Server will automatically allocate an unused IP address from the
IP address pool to the requesting computer. You must specify the starting and ending
address of the IP address pool.
DHCP
Home > DHCP
DHCP Server:
Select
Enabled
or
Disabled
. The
default
setting is
Enabled
.
DHCP IP Address
Range:
These two values (from and to) define a range of addresses that
the DHCP Server uses when assigning addresses to computers
and devices on your Local Area Network.
Lease Time:
The amount of time that a computer may have an IP address
before it is required to renew the lease.
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Page 23 / 101
23
DI-724U User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
DHCP Client:
This is a list of the computers or other devices for which you
have created Static DHCP entries. You can enable and disable
entries with the Enabled checkbox. A Static DHCP entry can
be changed by clicking the Edit icon, or deleted by clicking the
Delete icon. When you click the Edit icon, the item is highlighted,
and the “Static DHCP” section is activated for editing.
MAC Address:
To input the MAC address of your computer, enter it in manually
or connect to the router’s Web-Management interface from the
computer and click the Clone Your PC button.
Always Broadcast:
If all the computers on the LAN successfully obtain their IP addresses
from the router’s DHCP server as expected, this option can remain
disabled. However, if one of the computers on the LAN fails to obtain
an IP address from the router’s DHCP server, it may have an old
DHCP client that incorrectly turns off the broadcast flag of DHCP
packets. Enabling this option will cause the router to always broad-
cast its responses to all clients, thereby working around the problem,
at the cost of increased broadcast traffic on the LAN.
Computer Name:
You can assign a name for each computer that is given a static
IP address. This may help you keep track of which computers
are assigned this way.
IP Address:
The LAN address that you want to reserve.
Static DHCP:
In this section you can add reserved IP address to the Static
DHCP Client List below or edit existing entries. Each entry in
the table lets you reserve an IP addresses, and assign the
same IP address to the network device with the specified
MAC address any time it requests an IP address.
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Page 24 / 101
24
DI-724U User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Virtual Server
The DI-724U can be configured as a virtual server so that remote users accessing
Web or FTP services via the public IP address can be automatically redirected to local
servers in the LAN (Local Area Network).
The DI-724U firewall feature filters out unrecognized packets to protect your LAN
network so all computers networked with the DI-724U are invisible to the outside world.
If you wish, you can make some of the LAN computers accessible from the Internet by
enabling
Virtual Server.
Depending on the requested service, the DI-724U redirects
the external service request to the appropriate server within the LAN network.
The DI-724U is also capable of port-redirection meaning incoming traffic to a particular
port may be redirected to a different port on the server computer.
Each virtual service that is created will be listed at the bottom of the screen in the
Virtual Servers List. There are pre-defined virtual services already in the table. You may
use them by enabling them and assigning the server IP to use that particular virtual
service.
Advanced
Advanced > Virtual Server
The Advanced tab provides the following configuration options: Virtual Server, Applications,
Port Fowarding, StreamEngine, Filters, Parental Control, Firewall, DMZ, Performance and
Schedules.
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Page 25 / 101
25
DI-724U User’s Manual
D-Link Systems, Inc.
Using the Configuration Menu
Click on this icon to edit the virtual service.
Click on this icon to delete the virtual service.
Virtual Server:
Here you can add a new Virtual Server List entry or edit an
existing one.
Name:
Assign a meaningful name to the virtual server, for example
Web Server.
Private IP:
The IP address of the system on your internal network that will
provide the virtual service, for example 192.168.0.50.
Protocol Type:
Select the protocol used by the service.
Private Port:
The port that will be used on your internal network.
Public Port:
The port that will be accessed from the Internet.
Schedule:
Select a schedule for when the service will be enabled. If you do
not see the schedule you need in the list of schedules, go to the
Advanced
->
Schedules
screen and create a new schedule.
Example #1:
If you have a Web server that you wanted Internet users to
access at all times, you would need to enable it. Web (HTTP)
server is on LAN (Local Area Network) computer 192.168.0.25.
HTTP uses port 80, TCP
Name: Web Server
Private IP: 192.168.0.25
Protocol Type: TCP
Private Port: 80
Public Port: 80
Schedule: always
Firewall Rule:
Select a firewall rule that controls access as needed for this
virtual server. If you do not see the firewall rule you need in
the list of firewall rules, go to the
Advanced
->
Firewalls
page
and create a new firewall rule.
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