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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
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:
19216811.live