D-Link DI-LB604 Router Manual PDF (Setup & Configuration Guide)

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66

DI-LB604 User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

4 Can I use my D-Link Broadband Router to share my

Internet connection provided by AOL DSL Plus?

In most cases yes. AOL DSL+ may use PPPoE for authentication bypassing the client

software. If this is the case, then our routers will work with this service. Please contact

AOL if you are not sure.

To set up your router:

Step 1:

Log into the web-based conﬁguration (192.168.0.1) and conﬁgure the WAN

side to use PPPoE.

Step 2:

Enter your screen name followed by @aol.com for the user name. Enter your

AOL password in the password box.

Step 3:

You will have to set the MTU to 1400. AOL DSL does not allow for anything

higher than 1400.

Step 4:

Apply settings.

Step 5:

Recycle the power to the modem for 1 minute and then recycle power to the

router. Allow 1 to 2 minutes to connect.

If you connect to the Internet with a different internet service provider and want to use

the AOL software, you can do that without conﬁguring the router’s ﬁrewall settings. You

need to conﬁgure the AOL software to connect using TCP/IP.

Go to http://www.aol.com for more speciﬁc conﬁguration information of their software.

5 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

Advanced

on top and then click

Virtual Server

on the left side.

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67

DI-LB604 User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

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 or UDP.

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.

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68

DI-LB604 User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

6 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

7 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/Me/9x or

Macintosh operating systems please refer to Step 4 of the ﬁrst question in this section

(Frequently Asked Questions).

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69

DI-LB604 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)

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.

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70

DI-LB604 User’s Manual

D-Link Systems, Inc.

Frequently Asked Questions

8 How do I open a range of ports on my DI-LB604 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

.

Note: Make sure DMZ host is disabled.

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