D-Link DIR-685 Router Manual PDF (Setup & Configuration Guide)

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66

D-Link DIR-685 User Manual

Section 3 - Conﬁguration

Tick the checkbox to enable SPI. SPI (Stateful

Packet Inspection, also known as dynamic

packet filtering) helps to prevent cyber

attacks by tracking more states per session.

It validates that the trafﬁc passing through the

session conforms to the protocol.

If an application has trouble working

from behind the router, you can expose

one computer to the Internet and run the

application on that computer. Tick the

Enable DMZ Host

checkbox if you want to

add a computer to your DMZ.

Note:

Placing a computer in the DMZ may

expose that computer to a variety of security

risks. Use of this option is only recommended

as a last resort.

Specify the IP address of the computer on the

LAN that you want to have unrestricted Internet

communication. If this computer obtains its IP

address automatically using DHCP, be sure to

make a static reservation on the

Basic

>

DHCP

page so that the IP address of the DMZ machine

does not change.

Enable SPI:

Enable DMZ Host:

DMZ IP Address:

SPI / DMZ Host

Firewall Settings

Page 72 / 149

67

D-Link DIR-685 User Manual

Section 3 - Conﬁguration

To enable a Firewall Rule, tick the checkbox

next to the corresponding rule.

Enter a name for the Firewall Rule.

Use the drop-down menu to select the source

interface for the Firewall Rule.

Use these ﬁelds to specify the range of IP

Addresses that you want to create the Firewall

Rule for. Enter the lowest IP Address of the

range in the box at the top and the highest IP

Address of the range in the box underneath.

Use the drop-down menu to select the protocol

for the Firewall Rule (ALL, TCP, UDP, or

ICMP).

Use the drop-down menu to select the destination

interface for the Firewall Rule.

Use these ﬁelds to specify the range of ports

that should be used for the Firewall Rule. Enter

the lowest port number of the range in the box

at the top and the highest port number of the

range in the box underneath.

Use the drop-down menu to determine when the

Firewall should run. Click the

New Schedule

button to list the Schedules that have been

deﬁned in the

Tools > Schedules

window (see

page 88 for instructions on how to create a New

Schedule).

Enable

checkbox:

Name:

Interface-

Source:

IP Address:

Protocol:

Interface-

Destination:

Port Range:

Schedule:

Firewall Settings

Firewall Rules

Page 73 / 149

68

D-Link DIR-685 User Manual

Section 3 - Conﬁguration

To enable a new route, tick the checkbox next

to the corresponding route.

Select the interface that the IP packet must

use to transit out of the router when this route

is used.

Enter the IP address of packets that will take

this route.

Enter the netmask of the route, please note

that the numbers must match your destination

IP address.

Enter your next hop gateway to be taken if this

route is used.

Enable

checkbox:

Interface:

Destination:

Subnet Mask:

Gateway:

Routing

The Routing option is an advanced method of customizing speciﬁc routes of data through your network.

Page 74 / 149

69

D-Link DIR-685 User Manual

Section 3 - Conﬁguration

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 2432. 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) 1 is the default setting. A DTIM is a countdown informing clients of the next window for

listening to broadcast and multicast messages.

Select

Short Preamble

or

Long Preamble

.

Clear To Send (CTS) is a mechanism that wireless devices use when the surrounding environment is ‘dirty’ (i.e. many senders

and receivers over the same wireless frequency).

When the CTS Mode is set to

Always

the transmitting device will need to send out an RTS (Request To Send), and the

intended receiving device needs to send out a CTS (Clear To Send), before the actual data can be sent.

Setting the CTS Mode to

Auto

indicates that the router will decide whether or not the CTS mechanism should be used or

not, depending on the current environment and data length.

Transmit Power:

Beacon interval:

RTS Threshold:

Fragmentation:

DTIM interval:

Preamble Type:

CTS Mode:

Advanced Wireless

Page 75 / 149

70

D-Link DIR-685 User Manual

Section 3 - Conﬁguration

To use the Universal Plug and Play (UPnP

™

)

feature, tick the

Enable UPnP

box. UPnP

provides compatibility with networking equipment,

software and peripherals.

Unticking the box will not allow the DIR-685 to

respond to pings. Blocking the Ping may provide

some extra security from hackers. Tick the box

to allow the WAN port to be “pinged”.

You may set the port speed of the WAN/Internet

port to 10Mbps, 100Mbps, or auto. Some older

cable or DSL modems may require you to set the

port speed to 10Mbps.

Tick the box to allow multicast trafﬁc to pass

through the router from the Internet.

UPnP:

WAN Ping:

WAN Port Speed:

Multicast streams:

Advanced Network

Rate

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