²²

D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Network Filter

Select

Turn. MAC. Filtering. OFF

,

Turn. MAC.

Filtering.ON.and.ALLOW.computers.listed.to.

access.the.network

, or T

urn.MAC.Filtering.ON.

and.DENY.computers.listed.on.the.network±

Enter the MAC address you would like to filter.

To find the MAC address on a computer, please

refer to the Networking Basics section in this

manual.

Select a DHCP client from the drop-down menu

and click << to copy that MAC Address.

Configure MAC

Filter:

MAC Address:

DHCP Client:

Use MAC (Media Access Control) Filters to allow or deny LAN (Local Area Network) computers by their MAC addresses

from accessing the Network. You can either manually add a MAC address or select the MAC address from the list of

clients that are currently connected to the Broadband Router.

²³

D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Select

Turn.Website. Filtering. OFF

,

Turn.

Website.Filtering.ON.and.ALLOW.computers.

access.to.ONLY.these.sites

, or

Turn.Website.

Filtering.ON.and.DENY.computers.access.

to.ONLY.these.sites

.

Enter the keywords or URLs that you want to

block (or allow). Any URL with the keyword in

it will be blocked.

Click to remove all the entries.

Configure Website

Filter:

Website URL/

Domain:

Clear the List

Below:

URL and domain blocking are used to deny LAN computers from accessing specific web sites by the URL or domain.

A URL is a specially formatted text string that defines a location on the Internet. If any part of the URL contains the

blocked word, the site will not be accessible and the web page will not display. To use this feature, enter the text string

to be blocked

and click

Apply

. The text to be blocked

will appear in the list. To delete the text, just highlight it and click

.

Delete

.

Website Filter

²4

D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Check this box to enable DMZ.

Enter the IP address of the computer you would

like to open all ports to.

Check this box to allow PPTP VPN traffic to pass

through the router.

Check this box to allow L2TP VPN traffic to pass

through the router.

Check this box to allow IPSec VPN traffic to

pass through the router.

Enable DMZ Host:

DMZ IP Address:

Enable PPTP

Passthrough:

Enable L2TP

Passthrough:

Enable IPSec

Passthrough:

Firewall Settings

This section will allow you to setup a DMZ host and to enable VPN passthrough.

If you have a client PC that cannot run Internet applications properly from behind the DIR-451, then you can set the

client up for unrestricted Internet access. It allows a computer to be exposed to the Internet. This feature is useful for

gaming purposes. Enter the IP address of the internal computer that will be the DMZ host. Adding a client to the DMZ

(Demilitarized Zone) may expose your local network to a variety of security risks, so only use this option as a last

resort.

²5

D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

Select the basic transfer rates based on the speed

of wireless adapters on your wireless network. It

is strongly recommended to keep this setting to

Auto

.

Set the transmit power of the antennas.

Beacons are packets sent by an Access Point to

synchronize a wireless network. Specify a value.

100 is the default setting and is recommended.

This value should remain at its default setting of

2346. If inconsistent data flow is a problem, only a

minor modification should be made.

The fragmentation threshold, which is specified

in bytes, determines whether packets will be

fragmented. Packets exceeding the 2346 byte setting will be fragmented before transmission. 2346 is the default setting.

(Delivery Traffic Indication Message) 3 is the default setting. A DTIM is a countdown informing clients of the next window for

listening to broadcast and multicast messages.

Select Short or Long Preamble. The Preamble defines the length of the CRC block (Cyclic Redundancy Check is a common

technique for detecting data transmission errors) for communication between the wireless router and the roaming wireless

network adapters. Auto is the default setting. Note: High network traffic areas should use the shorter preamble type.

WMM (Wi-Fi Multimedia) is QoS (Quality of Service) for your wireless network. Enable this option to improve the quality of

video and voice applications for your wireless clients.

TX Rate:

Transmit Power:

Beacon Interval:

RTS Threshold:

Fragmentation:

DTIM Interval:

Preamble Type:

WMM Function:

Advanced Wireless Settings

²´

D-L±nk DIR-451 User Manual

Sect±on ³ - Configurat±on

To use the Universal Plug and Play (UPnP

™

)

feature click on

Enabled. UPNP

. UPNP

provides compatibility with networking

equipment, software and peripherals.

Unchecking the box will not allow the DIR-451

to respond to pings. Blocking the Ping may

provide some extra security from hackers.

Check the box to allow the WAN port to be

“pinged”.

Check the box to allow multicast traffic to

pass through the router from the Internet.

UPnP Settings:

WAN Ping:

Multicast

streams:

Advanced Network Settings