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D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

This section will allow you to change the local network settings of the router and to configure the DHCP settings.

Network Settings

Enter the IP address of the router. The default

IP address is 192.168.0.1.

If you change the IP address, once you click

Apply, you will need to enter the new IP address

in your browser to get back into the configuration

utility.

Enter the Subnet Mask. The default subnet mask

is 255.255.255.0.

Enter the Domain name (Optional).

Check the box to transfer the DNS server

information from your ISP to your computers. If

unchecked, your computers will use the router

for a DNS server.

IP Address:

Subnet Mask:

Local Domain:

Enable DNS Relay:

Refer to the next page for DHCP information.

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D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Check the 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.

The length of time for the IP address lease.

Enter the Lease time in minutes.

Enable DHCP

Server:

DHCP IP Address

Range:

Lease Time:

DHCP Server Settings

DHCP stands for Dynamic Host Control Protocol. The DIR-451 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-451. 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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D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Virtual Server

This will allow you to open and redirect a single port.

Rule:

Name:

IP Address:

Public Port/

Private Port:

Traffic Type:

Schedule:

Check the box to enabled the rule.

Enter a name for the rule. You may select an

application from the drop-down menu and click

<< to fill in the fields automatically.

Enter the IP address of the computer on your

local network that you want to allow the incoming

service to. You may select a computer from the

drop-down menu and click <<.

Enter the port that you want to open. In most

cases, the public and private will be the same

port.

Select

TCP

,

UDP

, or

ANY

.

Select Always or a created schedule from the

drop-down menu.

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D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Port Forwarding

This will allow you to open a single port or a range of ports.

Rule:

Name:

IP Address:

Start Port/

End Port:

Traffic Type:

Schedule:

Check the box to enabled the rule.

Enter a name for the rule. You may select an

application from the drop-down menu and click

<< to fill in the fields automatically.

Enter the IP address of the computer on your

local network that you want to allow the incoming

service to. You may select a computer from the

drop-down menu and click <<.

Enter the range of ports that you want to open.

If you want to open 1 port, enter the same port

in both boxes.

Select

TCP

,

UDP

, or

ANY

.

Select Always or a created schedule from the

drop-down menu.

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D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Application Rules

Some applications require multiple connections, such as Internet gaming, video conferencing, Internet telephony and

others. These applications have difficulties working through NAT (Network Address Translation). Special Applications

makes some of these applications work with the DIR-451.

Check the box to enabled the rule.

Enter a name for the rule.

This is the port used to trigger the application. It

can be either a single port or a range of ports.

This is the port number on the WAN side that

will be used to access the application. You may

define a single port or a range of ports. You

can use a comma to add multiple ports or port

ranges.

Select

TCP

,

UDP

, or

ANY

.

Rule:

Name:

Trigger Port:

Firewall Port:

Traffic Type: