D-Link DIR-412 Router Manual PDF (Setup & Configuration Guide)

Page 46 / 101 Scroll up to view Page 41 - 45

42

D-Link DIR-412 User Manual

Section 3 - Conﬁguration

Check this box to enable the DHCP server on

your router. Uncheck to disable this function.

Enter the starting and ending IP addresses for

the DHCP server’s IP assignment.

Note:

If you statically (manually) assign IP

addresses to your computers or devices, make

sure the IP addresses are outside of this range

or you may have an IP conﬂict.

The length of time for the IP address lease. Enter the Lease time in minutes.

Enable DHCP

Server:

DHCP IP Address

Range:

DHCP Lease Time:

DHCP Server Settings

DHCP stands for Dynamic Host Control Protocol. The DIR-412 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 DIR-412. 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.

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43

D-Link DIR-412 User Manual

Section 3 - Conﬁguration

DHCP Reservation

If you want a computer or device to always have the same IP address assigned, you can create a DHCP reservation.

The router will assign the IP address only to that computer or device.

Conﬁgure the parameters, as described below, to create a new DHCP Reservation.

Note:

This IP address must be within the DHCP IP Address Range.

Displays a list of the DHCP reservations that have been conﬁgured

on the router.

In this section, you can see information about the

LAN devices

that are currently being leased IP addresses.

Enter the computer name or select a computer name from the

drop-down menu on the right-hand side and click

<<

.

Enter the IP address you want to assign to the computer or device.

This IP Address must be within the DHCP IP Address Range.

Enter the MAC address of the computer or device.

DHCP

Reservations List:

Number of

Dynamic DHCP

Clients:

Computer Name:

IP Address:

MAC Address:

When you have ﬁnished conﬁguring the above settings, check the boxes next to the DHCP Reservation entries you

want to add to the DHCP Reservations List and click the

Save Settings

button at the top or bottom of the window to

save your entries and activate your reservations.

Page 48 / 101

44

D-Link DIR-412 User Manual

Section 3 - Conﬁguration

The DIR-412 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 DIR-412 ﬁrewall feature ﬁlters out unrecognized packets to protect

your LAN network so all computers networked with the DIR-412 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 DIR-412 redirects

the external service request to the appropriate server within the LAN

network.

The DIR-412 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. Pre-deﬁned virtual services are

already listed in the table. You may use them by enabling them and

assigning the server IP to use that particular virtual service.

For a list of ports for common applications, please visit the

Support

section for more information.

Virtual Server

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45

D-Link DIR-412 User Manual

Section 3 - Conﬁguration

The Virtual Server feature allows you to open a single port. If you would like to open a range of ports, refer to the next

page. Conﬁgure the parameters, as described below, to create a new Virtual Server entry.

Enter a name for the rule or select an application

from the drop-down menu. Select an application

and click

<<

to populate the ﬁelds.

Enter the IP address of the computer on your

local network that you want to allow the incoming

service to. If your computer is receiving an IP

address automatically from the router (DHCP),

you computer will be listed in the “Computer

Name” drop-down menu. Select your computer

and click

<<

.

Enter the port number that you want to open next

to Private Port and Public Port. The private and

public ports are usually the same. The private port

is the port being used by the application on the

computer within your local network, and the public

port is the port seen from the Internet side.

Select

TCP

,

UDP

, or

Both

from the drop-down menu.

The schedule of time when the Virtual Server Rule will be enabled. The schedule may be set to Always, which will allow the

particular service to always be enabled. You can create your own times in the

Tools

>

Schedules

section.

Name:

IP Address:

Public Port/

Private Port:

Protocol Type:

Schedule:

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46

D-Link DIR-412 User Manual

Section 3 - Conﬁguration

Port Forwarding is a feature that allows you to open a single port or a range of ports and redirect the data received

through those ports to a single PC on your network.

Port Forwarding

Enter a name for the rule or select an application

from the drop-down menu. Select an application

and click

<<

to populate the ﬁelds.

Enter the IP address of the computer on your

local network that you want to allow the incoming

service to. If your computer is receiving an IP

address automatically from the router (DHCP),

you computer will be listed in the “Computer

Name” drop-down menu. Select your computer

and click

<<

.

Enter the range of ports that you want to open

next to the Private Port and Public Port ﬁelds.

The private and public ports are usually the

same. The private ports are the ports being

used by the application on the computer within

your local network, and the public ports are the

ports seen from the Internet side.

Use the drop-down menu to select whether

TCP

,

UDP

, or

All

types of trafﬁc are being used

for the port forwarding rule.

Select a schedule for when the Port Forwarding

Rule will be enabled. The schedule may

be set to Always, which will allow the

particular service to always be enabled.

You can create your own times in the

Tools

>

Schedules

section.

Name:

IP Address:

Public Port/

Private Port:

Trafﬁc Type:

Schedule:

Rate

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