D-Link DI-624S Router Manual PDF (Setup & Configuration Guide)

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86

DI-624S User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

How do I open ports on my router?

To allow trafﬁc from the internet to enter your local network, you will need to open up ports or the

router will block the request.

Step 1

Open your web browser and

enter the IP Address of your D-Link

router (192.168.0.1). Enter username

(admin) and your password (blank by

default).

Step 2

Click on the

Advanced

on top

and then click

Virtual Server

on the

left side.

Step 3

Check

Enabled

to activate

entry.

Step 4

Enter a name for your virtual server entry.

Step 5

Next to

Private IP

, enter the IP Address of the computer on your local network that you

want to allow the incoming service to.

Step 6

Choose

Protocol Type

- either TCP, UDP, or both. If you are not sure, select both.

Step 7

Enter the port information next to

Private Port

and

Public Port

. The private and public

ports are usually the same. The public port is the port seen from the WAN side, and the private

port is the port being used by the application on the computer within your local network.

Step 8

Enter the

Schedule

information.

Step 9

Click

Apply

and then click

Continue

.

Note:

Make sure DMZ host is disabled. If DMZ is enabled, it will disable all Virtual Server entries.

Because our routers use NAT (Network Address Translation), you can only open a speciﬁc port to

one computer at a time. For example: If you have 2 web servers on your network, you cannot open

port 80 to both computers. You will need to conﬁgure 1 of the web servers to use port 81. Now you

can open port 80 to the ﬁrst computer and then open port 81 to the other computer.

Page 87 / 106

87

DI-624S User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

What is DMZ?

Demilitarized Zone:

In computer networks, a DMZ (demilitarized zone) is a computer host or small network inserted as

a neutral zone between a company´s private network and the outside public network. It prevents

outside users from getting direct access to a server that has company data. (The term comes

from the geographic buffer zone that was set up between North Korea and South Korea following

the UN police action in the early 1950s.) A DMZ is an optional and more secure approach to a

ﬁrewall and effectively acts as a proxy server as well.

In a typical DMZ conﬁguration for a small company, a separate computer (or host in network

terms) receives requests from users within the private network for access to Web sites or other

companies accessible on the public network. The DMZ host then initiates sessions for these

requests on the public network. However, the DMZ host is not able to initiate a session back into

the private network. It can only forward packets that have already been requested.

Users of the public network outside the company can access only the DMZ host. The DMZ may

typically also have the company´s Web pages so these could be served to the outside world.

However, the DMZ provides access to no other company data. In the event that an outside user

penetrated the DMZ hosts security, the Web pages might be corrupted but no other company

information would be exposed. D-Link, a leading maker of routers, is one company that sells

products designed for setting up a DMZ.

How do I conﬁgure the DMZ Host?

The DMZ feature allows you to forward all incoming ports to one computer on the local network.

The DMZ, or Demilitarized Zone, will allow the speciﬁed computer to be exposed to the

Internet. DMZ is useful when a certain application or game does not work through the ﬁrewall.

The computer that is conﬁgured for DMZ will be completely vulnerable on the Internet, so it is

suggested that you try opening ports from the Virtual Server or Firewall settings before using

DMZ.

Step 1

Find the IP address of the computer you want to use as the DMZ host.

To ﬁnd out how to locate the IP Address of the computer in Windows XP/2000 or Macintosh

operating systems please refer to Step 4 of the ﬁrst question in this section (Frequently Asked

Questions).

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DI-624S User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

Step 2

Log into the web based conﬁguration of the router by

typing in the IP Address of the router (default:192.168.0.1)

in your web browser. The username is

admin

(all lowercase)

and the password is

blank

(nothing)

How do I conﬁgure the DMZ Host? (continued)

Step 3

Click the

Advanced

tab and then click on the

DMZ

button. Select

Enable

and type in the IP

Address you found in step 1.

Step 4

Click

Apply

and then

Continue

to save

the changes.

Note:

When DMZ is enabled, Virtual Server

settings will still be effective. Remember, you

cannot forward the same port to multiple IP

Addresses, so the Virtual Server settings will

take priority over DMZ settings.

DI-624S

Page 89 / 106

89

DI-624S User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

How do I open a range of ports on my DI-624S using Firewall rules?

Step 1

Access the router’s web conﬁguration by entering the router’s IP Address in your web

browser. The default IP Address is

192.168.0.1

. Login using your password. The default username is

“admin”

and the password is blank.

If you are having difﬁculty accessing web management, please see the ﬁrst question

in this section.

Step 2

From the web management Home page, click the

Advanced

tab then click the

Firewall

button.

Step 3

Click on

Enabled

and type in

a name for the new rule.

Step 4

Choose

WAN

as the

Source

and enter a range of IP Addresses out

on the internet that you would like this

rule applied to. If you would like this

rule to allow all internet users to be

able to access these ports, then put

an

Asterisk

in the ﬁrst box and leave

the second box empty.

Step 5

Select

LAN

as the

Destination

and enter the IP Address of the computer on your local

network that you want to allow the incoming service to. This will not work with a range of IP

Addresses

.

Step 6

Enter the port or range of ports that are required to be open for the incoming service.

Step 7

Click

Apply

and then click

Continue

.

Because our routers use NAT (Network Address Translation), you can only open a speciﬁc port to

one computer at a time. For example: If you have 2 web servers on your network, you cannot open

port 80 to both computers. You will need to conﬁgure 1 of the web servers to use port 81. Now you

can open port 80 to the ﬁrst computer and then open port 81 to the other computer.

Note:

Make sure DMZ host is disabled.

Page 90 / 106

90

DI-624S User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

What are virtual servers?

A Virtual Server is deﬁned as a service port, and all requests to this port will be redirected to

the computer speciﬁed by the server IP. For example, if you have an FTP Server (port 21) at

192.168.0.5, a Web server (port 80) at 192.168.0.6, and a VPN server at 192.168.0.7, then you

need to specify the following virtual server mapping table:

Server Port

Server IP

Enable

21

192.168.0.5

X

80

192.168.0.6

X

1723

192.168.0.7

X

How do I use

PC Anywhere

with my DI-624S router?

You will need to open 3 ports in the Virtual Server section of your D-Link router.

Step 1

Open your web browser and enter the IP Address of the router (192.168.0.1).

Step 2

Click on

Advanced

at the top and then click

Virtual Server

on the left side.

Step 3

Enter the information as seen below. The

Private IP

is the IP Address of the computer on

your local network that you want to connect to.

Step 4

The ﬁrst entry will read as shown here:

Step 5

Click

Apply

and then click

Continue

.

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