Ubee DDW365 Wireless Cable Modem

Ubee DDW365
Wireless Cable Modem
Firmware Version: 8.14.5313
Subscriber User Guide
Time Warner Cable
April 2016
www.ubeeinteractive.com
9155 E. Nichols Ave, Suite 220
Centennial, CO 80112
1.888.390.8233
Sales (email): amsales@ubeeinteractive.com
Support (email): amsupport@ubeeinteractive.com
Notices and Copyrights
Copyright 2016 Ubee Interactive. All rights reserved. This document contains proprietary information of Ubee Interactive and is not to
be disclosed or used except in accordance with applicable agreements. This material is protected by the copyright laws of the United
States and other countries. It may not be reproduced, distributed, or altered in any fashion by any entity (either internal or external to
Ubee), except in accordance with applicable agreements, contracts, or licensing, without the express written consent of Ubee and the
business management owner of the material.
Ubee Interactive continuously improves its products and reserves the right to make changes to the product described in this document
without notice. Ubee Interactive does not assume any liability that may occur due to the use of the product described in this document.
All trademarks mentioned in this document are the property of their respective owners.
This device is Wifi Alliance Certified:
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
Understanding Safety and Regulatory Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Understanding Connections and Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Requesting Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Checking Device Package Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Understanding the Device Panels, Connections and LEDs . . . . . . . . . . . . . . . . . . . . . . . . 4
Understanding Specifications, Standards, and Firmware . . . . . . . . . . . . . . . . . . . . . . . . . 6
Understanding Default Values and Logins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Installing the DDW365 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Setting Up and Connecting the DDW365 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Connecting Devices to the Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Troubleshooting the Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3 Using the Web User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Accessing the Web User Interface Locally . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Logging Out of the Web Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4 Understanding the Status Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.1
4.2
4.3
4.4
4.5
4.6
Using the Software Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Using the Connection Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Using the Account Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Using the Diagnostics Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Using the Client List Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Using the User Default Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5 Understanding the Basic Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
5.1
5.2
5.3
5.4
5.5
Using the Setup Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Using the DHCP Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Using the DDNS Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Using the Backup Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Using the Time Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6 Understanding the Advanced Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
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6.1 Using the Options Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.2
6.3
6.4
6.5
6.6
6.7
6.8
Using the IP Filtering Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Using the MAC Filtering Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Using the Port Filtering Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Using the Forwarding Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Using the Port Triggers Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Using the Pass Through Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Using the DMZ Host Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7 Understanding the Firewall Menu 52
7.1 Using the Basic Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.2 Using the Local Log Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
7.3 Using the Remote Log Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
8 Understanding the Parental Control Menu . . . . . . . . . . . . . . . . . . . . . . . . . . 56
8.1
8.2
8.3
8.4
Using the Parental Control User Setup Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Using the Basic Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Using the ToD Filter Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Using the Local Log Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
9 Understanding the Wireless Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.1
9.2
9.3
9.4
9.5
9.6
Using the Wireless Radio Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Using the Primary Network Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Using the Access Control Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Using the Wi-Fi Multimedia Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Using the Bridging Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Deploying and Troubleshooting the Wireless Network . . . . . . . . . . . . . . . . . . . . . . . . . . 76
10 Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
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1
Introduction
Welcome to the Ubee family of data networking products. This guide is specific to the
DDW365 Wireless Cable Modem for subscribers of Time Warner Cable services. This
document serves the following purposes:
 Provides instructions on how to install, connect and operate the device.
 Provides directions for accessing the Web user interface (UI) for configuration and
management of the device.
 Defines all relevant device compliance standards and physical specifications.
Topics
See the following topics:
 Understanding Safety and Regulatory Information on page 1
 Understanding Connections and Applications on page 3
 Requesting Support on page 3
 Checking Device Package Components on page 3
 Understanding the Device Panels, Connections and LEDs on page 4
 Understanding Specifications, Standards, and Firmware on page 6
 Understanding Default Values and Logins on page 8
1.1
Understanding Safety and Regulatory Information
Use the following information to better understand safety and regulatory standards to
install, maintain, and use the DDW365 Wireless Cable Modem.
1.1.1
Understanding Safety
WARNING: The following information provides safety guidelines for anyone
installing and maintaining the DDW365. Read all safety instructions in this
guide before attempting to unpack, install, operate, or connect power to this
product. Follow all instruction labels on the device itself. Comply with the
following safety guidelines for proper operation of the device.
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Understanding Safety and Regulatory Information
Follow basic safety precautions to reduce the risk of fire, electrical shock, and
injury. To prevent fire or shock hazard, do not expose the unit to rain and
moisture or install this product near water. Never spill any form of liquid on or
into this product. Do not use liquid cleaners or aerosol cleaners on or close to
this product. Clean with a soft dry cloth.
Do not insert sharp objects into the product’s module openings or empty slots.
Doing so can accidentally damage its parts and/or cause electric shock.
Electrostatic discharge (ESD) can permanently damage semiconductor
devices. Always follow ESD-prevention guidelines for equipment handling and
storage.
Use only the power cable supplied with the device. Do not attach the power
supply cable to building surfaces or floorings.
 Rest the power cable freely without any obstacles. Do not place heavy items on top of
the power cable. Do not abuse, step, or walk on the cable.
 Do not place heavy objects on top of the device. Do not place the device on an
unstable stand or table; the device can fall and become damaged.
 To prevent overheating, do not block the slots and openings in the module housing
that provide ventilation. Do not expose this device to direct sunlight. Do not place hot
devices close to this device; it may degrade it or cause damage.
1.1.2
Understanding Eco-Environmental Statements
The following eco-environmental statements apply to the DDW365.
Packaging Collection and Recovery Requirements:
Countries, states, localities, or other jurisdictions may require that systems be established
for the return and/or collection of packaging waste from the consumer, or other end user,
or from the waste stream. Additionally, reuse, recovery, and/or recycling targets for the
return and/or collection of the packaging waste can be established. For more information
regarding collection and recovery of packaging and packaging waste within specific
jurisdictions, contact Ubee Interactive at www.ubeeinteractive.com.
1.1.3
Understanding Regulatory Statements
The following regulatory statements apply to the DDW365.
Industry North America Statement:
This device complies with RSS-210 of the Industry North America Rules. Operation is
subject to the following two conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received, including interference that may
cause undesired operation.
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Understanding Connections and Applications
Radiation Exposure Statement:
This device complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This device should be installed and operated with a minimum distance of
20cm between the radiator & your body. This device has been designed to operate with
an antenna having a maximum gain of 2 dBi. This device must not be co-located with or
operating in conjunction with any other antenna or transmitter.
1.2
Understanding Connections and Applications
The following diagram illustrates the general connections and applications of the
DDW365.
1.3
Requesting Support
Subscribers must contact their service provider for direct support. Device documentation
support may be available at:
http://www.ubeeinteractive.com
1.4
Checking Device Package Components
The package for the DDW365 contains the following items:
Item
Description
1 - RJ45 Cable (Ethernet)
Length ~ 6.0 ft RoHS & UL compliant
Sample image, actual appearance subject to change.
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Understanding the Device Panels, Connections and LEDs
Item
Description
1 - Power Cable
Input: 100-120V ~, 50-60Hz
CE and UL Certified
Sample image, actual appearance subject to change.
1.5
Understanding the Device Panels, Connections and LEDs
1.5.1
Understanding the Device Front and Rear Panels
The following images represent the device front and rear panels. Connection descriptions
are provided in section 1.5.2., and LED descriptions are provided in section 1.5.3.
Front Panel
Ubee DDW365 Wireless Cable Modem Subscriber User Guide • April 2016
Rear Panel
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1.5.2
Understanding the Device Panels, Connections and LEDs
Understanding the Device Connections
The following table describes the connections on the device.
Item
1.5.3
Description
RESET
Restores the settings of the device, including wireless and custom
gateway settings, to factory defaults. Use a pointed object to push
down the recessed reset button. To power cycle the device, hold for
less than 5 seconds. To reset the device to factory defaults, hold
down for more than 5 seconds. After the power LED turns off,
release the button.
USB
Disabled by default. If enabled by the service provider, the USB port
connects to USB devices such as flash drives or hard disk drives.
ETH1
ETH2
ETH3
ETH4
Connects to Ethernet devices such as computers, gaming consoles,
and/or routers/hubs using an RJ45 cable. Each ETH port on the
back panel of the device has an LED to indicate its status when an
Ethernet device is connected.
CABLE
Connects to the power cable outlet (with the cable provided by your
service provider), or a cable splitter connected to the cable outlet.
POWER
Connects the cable to the device. Use only the power cable
provided with the DDW365.
WPS
Located on top of the device, this button is used for the WiFi
Protected Setup (WPS) method to connect a PIN-protected WiFi
device to the cable modem. Refer to Understanding the Wireless
Menu on page 63 for more information.
Understanding LED Behavior
The following tables summarize the behavior of the LEDs on both the front and rear
panels of the DDW365.
FRONT PANEL
LED
Color
Description
POWER
White
On – Internal power-on completed successfully.
Flashes – Power-on failed. Note that the LED blinks briefly immediately after powering on the
device.
On – when firmware upgrade is in progress.
US/DS
White
Flashes – Once every second while scanning DS. Once locked on DS, flashes twice every
second while registering the US.
On – Locked to US and DS channels and registered OK.
Flashes – When a firmware upgrade is in progress, and POWER LED and ONLINE LEDs are
ON solid.
(upstream/
downstream)
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Understanding Specifications, Standards, and Firmware
FRONT PANEL
LED
Color
Description
ONLINE
White
Flashes – Obtaining an IP address and configuration file.
On – Configuration completed successfully, device is connected to the network.
Off – Network connect failed.
WiFi
White
On – WiFi is enabled.
Off – WiFi is disabled.
WPS
BUTTON
(top of
device)
White
If not used, the LED is off. When a user pushes the WPS button or triggers WPS via the
device’s Web UI, an LED on the top-front of the device flashes for 4 minutes until a PIN is
entered from the wireless client that wishes to connect (for example, a laptop computer). After
a WiFi client attaches successfully, the LED remains On for 5 minutes, then turns Off.
REAR PANEL
LED
Color
Description
ETH1
ETH2
ETH3
ETH4
Green/
Orange
On Green – An Ethernet device is connected to the DDW365 at 1000 Mbps speeds (Gigabit
Ethernet).
On Orange – An Ethernet device is connected to the DDW365 at 10/100 Mbps speeds.
Flashes (in Green or Orange) – When data is being passed between the DDW365 and the
connected device.
The Ethernet ports are used to connect Ethernet devices such as computers, gaming
consoles, and/or routers/hubs to the DDW365 using RJ-45 cables. Each Ethernet port on the
back panel of the device has an LED to indicate its status when an Ethernet device is
connected.
1.6
Understanding Specifications, Standards, and Firmware
The following list provides the features and specifications of the DDW365.
Interfaces and Standards
 Cable: F-Connector, female
 LAN: (4) 10/100/1000 Mbps RJ45 ports
 USB: (1) USB 2.0 host port
 DOCSIS 3.0 certified
 DOCSIS 1.0/1.1/2.0 certified
 CE/FCC Class B, ENERGY STAR® certified, WiFi Alliance certified
Downstream*
 Frequency Range: 88MHz ~ 1002MHz
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Understanding Specifications, Standards, and Firmware
 Modulation: 64 / 256 QAM
 Channel Bandwidth: 6 MHz
 Maximum Data Rate per Channel (up to 8 channels): DOCSIS = 30 Mbps (64
QAM), 42 Mbps (256 QAM),
 Total Max Bandwidth (8 Channels): DOCSIS = 343 (304) Mbps
 Symbol Rate: 6952 Ksps
 RF (cable) Input Power: -15 to +15dBmV (64 QAM), -15 to +15dBmV (256 QAM)
 Input Impedance: 75 Ω
Upstream*
 Frequency Range: 5MHz ~ 42MHz
 Modulation A-TDMA: QPSK, 8, 16, 32, 64QAM, S-CMDA: QPSK, 8, 16, 32, 64,
128QAM
 Max Bandwidth of 4 Channels = 122.88 (108) Mbps, bandwidth per channel (up to
4 channels) = [QPSK 0.32 ~ 10.24 Mbps, 8 QAM 0.48 ~ 15.36 Mbps, 16 QAM 0.64
~ 20.48 Mbps, 32 QAM 0.80 ~ 25.60 Mbps, 64 QAM 0.96 ~ 30.72 Mbps, 128
QAM/TCM 30.72 Mbps]
 Symbol Rate: 160, 320, 640, 1280, 2560, 5120 Ksps
 RF (cable) Output Power: TDMA/ATDMA: +8dBmV to +54dBmV (32/64 QAM).
ATDMA Only: +8dBmV to +55dBmV (8/16 QAM), +8dBmV to +58dBmV (QPSK).
S-CDMA: +8dBmV to +53dBmV (all modulations)
*Actual speeds vary based on factors including network configuration and speed.
Security and Network
 Supports 8 SSIDs, 802.11b/g/n compliant with link speeds up to 450 Mbps, 3 Tx
and 3 Rx antennas with single radio
 DHCP Client/Server, Static IP network assignment, RIPv1/ v2, Ethernet
10/100/1000 BaseT, full-duplex auto-negotiate functionality, IPv4 and IPv6 support
 NAT Firewall, MAC/IP/port filtering, parental control, stateful packet inspection
(SPI), DoS attack protection, WPS/ WPA/ WPA2/ WPA-PSK & 64/128-bit WEP
encryption
 VPN pass-through and end-point support (IPSec/PPTP), TACACS or RADIUS
authentication
Device Management







Supports IEEE 802.11e Wi-Fi Multimedia (WMM) and UAPSD (power savings)
DOCSIS, Web-Based, and XML Configuration
Telnet/SSH remote management
Firmware upgrade via TFTP
Configuration backup and restore
SNMP support
TR-069 capable
Physical and Environmental
 Dimensions: 220mm, 8.625” (W) x 220mm, 8.625” (H) x 42mm, 1.625” (D)
 Weight: 825g (1.8 lbs.) (Contains internal PSU)
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Understanding Default Values and Logins




1.7
Input: 90-120VAC, 50-60Hz
Output: 12V 2.17A
Operating Temperature: 0°C ~ 40°C (32°F ~ 104°F)
Humidity: 5~90% (non-condensing)
Understanding Default Values and Logins
The DDW365 is pre-configured with the default parameters for Time Warner Cable.
Local Port Address: 192.168.100.1
Web Interface: http://192.168.100.1
Operation Mode: NAT Mode
Subnet Mask: 255.255.255.0
Wireless Defaults:
 Primary SSID (subscriber-managed) = “DDW365” plus the last 2 characters of the
MAC address with the letters entered in UPPER case.
Example: DDW3658C
 If the subscriber changes the SSID, the device does not revert to this default
SSID when the device is reset, except when a manual reset is performed
through the Web UI.
 The MAC address can be found on the device label or it can be found by
opening an Internet browser window to the device. Refer to Using the Software
Option on page 16 for instructions.
 Encryption Method = WPA2-PSK with AES encryption
 WPA Pre-shared Key = Unique key for each device. Also called the network key.
The pre-shared key for the DDW365 is “DDW365” plus the last 6 characters (3
octets) of the modem’s MAC address, with letters entered in UPPER case. Refer
to Using the Primary Network Option on page 66 for more information.
Example: DDW3654B488C
 WPS PIN = The WPS PIN is a randomly-generated eight digit number found on the
Wireless Primary Network screen. Refer to Using the Primary Network Option on
page 66.
 Device Name: UbeeAP
Login Default Values
 Standard User/Subscriber Web Interface Login
Username: user
Password: user
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2
Installing the DDW365
Use the information in this chapter to set up and connect the DDW365, connect additional
devices, and troubleshoot the installation.
Topics
See the following topics:
 Setting Up and Connecting the DDW365 on page 9
 Connecting Devices to the Network on page 10
 Troubleshooting the Installation on page 12
2.1
Setting Up and Connecting the DDW365
Use the following instructions to set up and connect the DDW365. When the device is set
up and connected, refer to Accessing the Web User Interface Locally on page 13 to
configure the device.
Important: Subscribers will need to contact their service provider to enable Internet
access and wireless networking.
Typically, the service provider initially configures and connects the device. The installation
steps are provided below if you wish to confirm the setup, or add devices to your network.
Refer to Connecting Devices to the Network on page 10.
Steps
To set up the device:
1. Remove the contents from the device packaging.
2. Place the DDW365 in a central location to connect to other devices, such as PCs or
gaming consoles.
 Place the DDW365 and wireless clients in open areas far away from transformers,
heavy-duty motors, microwave ovens, refrigerators, fluorescent lights, and other
manufacturing equipment. These items can impact wireless signals. A wireless
signal can become weaker after it has passed through metal, concrete, brick,
walls, or floors.
 Place the device in a location that has an operating temperature of 0˚ C to
40˚ C (32˚ F to 104˚ F). Refer to Understanding LED Behavior on page 5 for more
safety information.
3. Power on your PC. The PC must have an Ethernet network adapter or Ethernet port
and an Internet browser installed, such as Internet Explorer. The following browsers
are supported:
 For Windows 2000, XP, Vista, Windows 7, Windows 8, Google Chrome, Firefox
1.07 and higher, Internet Explorer v7 and above.
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Connecting Devices to the Network
 For MAC OS X, 10.2, and higher: Firefox 1.07 and higher, Safari 1.x and higher.
4. Connect the power cable included in the product package to the back of the DDW365
and plug the other end into the power outlet.
5. Connect the network cable included in the product package to your computer’s
Ethernet port. Connect the other end to the ETH1, ETH2, ETH3, or ETH4 port on the
DDW365.
6. Connect a coaxial cable from the CABLE connector on the back of the device to the
cable wall outlet, or to a cable splitter connected to the wall outlet.
7. Validate the network connection using the device LEDs to confirm operations.
 The WiFi LED must be flashing or solidly lit.
 The PWR, US/DS, and ONLINE LEDs are solidly lit.
Refer to Understanding LED Behavior on page 5 for more information.
2.2Connecting Devices to the Network
Use the instructions below to connect network devices and validate device functionality.
Topics
See the following topics:
 Connecting an Ethernet Device on page 10
 Connecting a Wireless Device on page 11
2.2.1
Connecting an Ethernet Device
You can connect up to three additional Ethernet devices to the DDW365.
Steps
To connect another Ethernet device to the network:
1. Connect the Ethernet cable from the Ethernet device (for example, a PC or gaming
console) to an open Ethernet port on the back of the DDW365.
2. Use the device LEDs to confirm operations. Refer to Understanding LED Behavior on
page 5 for more information.
3. Open a Web browser and go to any Web site to validate network/Internet connectivity
(for example, http://www.wikipedia.org).
4. If the connected device is a gaming console, perform any online task supported by the
console (for example, log into the gaming server, play an online game, download
content).
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Connecting Devices to the Network
Note
Refer to Troubleshooting the Installation on page 12 for troubleshooting information.
2.2.2
Connecting a Wireless Device
Use the following steps to connect a wireless device to the DDW365 (for example, a
laptop computer).
Default values are shown in the steps below. Some regions may change default values
using the DDW365 or XML configuration file.
Steps
To connect a wireless device to the DDW365:
1. Access the wireless networking menu on your wireless device. On a Windows
computer, for example, double-click the Wireless Network Connection icon in the
system tray (lower-right side of the Windows desktop).
2. Click View Wireless Networks. The device is shipped with a default SSID. The SSID
is the name of the wireless network broadcast from the device so that wireless clients
can connect to it.
 Double-click your SSID in the wireless networks window. The default SSID
(subscriber-managed) = “DDW365” plus the last 2 characters of the MAC address
with the letters entered in UPPER case.
Example: DDW3658C
Notes: You can find the MAC address on the device label or by opening an Internet
browser window to the device. Refer to Using the Software Option on page 16 for
instructions. If the subscriber changes the SSID, the device does not revert to this
default SSID upon any reset of the device, except in the case of a manual reset using
the device’s Web UI. See Using the Account Option on page 20.
When prompted, enter the network key, also called the pre-shared key. This is a
unique key for each device. The pre-shared key for the DDW365 is “DDW365” plus
the last 6 characters (3 octets) of the device’s MAC address, with letters entered in
UPPER case. Refer to Using the Primary Network Option on page 66.
Example pre-shared key: DDW3654B488C
 If using WPS, enter the WPS personal identification number (PIN). The WPS PIN
is a randomly-generated number found on the Wireless Primary Network screen.
Refer to Using the Primary Network Option on page 66.
 WPA-WPA2 + AES is the default encryption method.
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Troubleshooting the Installation
3. Confirm connectivity by opening a Web browser and going to any Web site
(for example, http://www.wikipedia.org) or access the Web interface for the DDW365.
Note
The Web interface allows you to customize the configurations and capabilities for the
device. For a full explanation of all Web interface functions, refer to Using the Web
User Interface on page 13.
If you have wireless issues or questions, refer to Deploying and Troubleshooting the
Wireless Network on page 76.
2.3
Troubleshooting the Installation
Use the following tips to troubleshoot the installation.
 None of the LEDs are on when I power on the DDW365.
 Check the connection between the power outlet and the power cord. Verify the
power outlet is energized and the power cord is connected to the power outlet.
 Check the connection between the power cord and the device. Power off the
DDW365 and wait for 5 seconds and power it on the again. If the problem still
exists, there may be a hardware problem.
 The ETH1, ETH2, ETH3, or ETH4 LEDs on the back of the DDW365 are not lit
where Ethernet cables are connected.
 Restart the computer so that it can re-establish a connection with the device.
 Check for a resource conflict (Windows users only):
1.
Right-click My Computer on your desktop and choose Properties.
2.
Choose the Device Manager tab and look for a yellow exclamation point or red X over the
network interface card (NIC) in the Network Adapters field. If you see either one, you may
have an interrupt request (IRQ) conflict. Refer to the manufacturer’s documentation or ask
your service provider for further assistance.
 Verify that TCP/IP is the default protocol for your network interface card.
 Power cycle the DDW365 by removing the power cord from the electrical outlet
and plugging it back in. Wait for the device to re-establish communications with
your cable service provider.
 Check General Connectivity Issues:
 If your PC is connected to a hub or gateway, connect the PC directly into an
Ethernet port on the DDW365.
 If you are using a cable splitter, remove the splitter and connect the device directly
to the cable wall outlet. Wait for the device to re-establish communications with the
cable service provider.
 Try a different cable. The Ethernet cable may be damaged.
 If none of these suggestions work, contact your service provider’s tier II support for
further assistance.
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3
Using the Web User Interface
The Web user interface (UI) for the DDW365 is easy to use and allows you to view and
configure settings for your device. You can validate the installation by accessing the Web
user interface on the device.
Topics
See the following topics:
 Accessing the Web User Interface Locally on page 13
 Logging Out of the Web Interface on page 14
3.1
Accessing the Web User Interface Locally
Access the Web user interface for the DDW365 from a Web browser, such as Internet
Explorer on a Windows computer.
Default values are shown in the steps below.
Steps
To access the Web user interface:
1. Launch an Internet browser, such as Internet Explorer, from your computer.
2. Enter the following IP address in the address bar of the browser window and press the
Enter key.
http://192.168.100.1
3. Enter the username and password in the authentication dialog box.
 Standard User (subscriber) Web Interface Login:
Username: user
Password: user
4. Click OK. The Status>Software screen (shown below) displays software information
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Logging Out of the Web Interface
about the DDW365.
3.2
Logging Out of the Web Interface
Log out when finished using the Web user interface.
Steps
To log out of the user interface:
1. Click Logout from the main menu.
The logout screen is displayed.
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Logging Out of the Web Interface
2. To begin a new user interface session, click Back to Login. The Cable Modem
Information screen is displayed. Click Login to access the login screen.
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4
Understanding the Status Menu
The Status menu of the Web user interface allows you to access information about the
DDW365, such as software, connection (downstream and upstream), diagnostics, and
event log.
Topics
See the following topics:






Using
Using
Using
Using
Using
Using
the
the
the
the
the
the
Software Option on page 16
Connection Option on page 18
Account Option on page 20
Diagnostics Option on page 21
Client List Option on page 24
User Default Option on page 26
Steps
To access status options:
1. Access the Web user interface. Refer to Accessing the Web User Interface Locally on
page 13.
2. Click Status from the main menu.
4.1
Using the Software Option
The Software option displays the device’s internal software and hardware configuration.
Steps
To view software information:
1. Click Status from the main menu.
2. Click Software from the left side menu. Field descriptions are listed below the screen
example.
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Using the Software Option
Label
Description
Information
Standard Specification Compliant
Defines the current DOCSIS standard supported by of
device.
Hardware Version
Defines the internal version number that identifies the
hardware design.
Software Version
Defines the firmware version of the device.
Cable Modem MAC Address
Defines the unique media access control (MAC) hardware
address of the DDW365.
Cable Modem Serial Number
Defines the unique manufacturer serial number of the device.
CM certificate
Indicates if the cable modem certificate is installed.
Status
System Up Time
Displays how long the device has been connected.
Network Access
Defines if network access is enabled. When enabled, the
user is allowed to access the network.
Cable Modem IP Address
Displays the IP address for the cable modem.
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4.2
Using the Connection Option
Using the Connection Option
The Connection screen displays information about the device’s connection status and
downstream and upstream channel bonding statistics.
 Downstream displays detailed information on the network traffic from the service
provider to the local computer (downstream channels).
 Upstream displays detailed information on the network traffic from the computer
to the remote destination (upstream channels).
Steps
To view connection information:
1. Click Status from the main menu.
2. Click Connection from the left side menu. Field descriptions are listed below the
screen example.
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Using the Connection Option
Label
Description
Startup Procedure (Procedure, Status, Comment)
Acquire Downstream Channel
Displays the Downstream channel status and if the device has
locked to a channel.
Connectivity State
Displays connection status and if the DDW365 is operational.
Boot State
Displays the status on boot up and if the device is operational.
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Using the Account Option
Label
Description
Configuration File
Provides the status and file name of the configuration file
currently used by the DDW365.
Security
Displays the status of the security settings: enabled/disabled.
Downstream Bonded Channels
Channel
Numbers the downstream channels.
Lock Status
Displays if the device has locked successfully to a
downstream channel.
Modulation
Displays the modulation method required for the downstream
channel to lock on to by the device. This method is
determined by the service provider.
Channel ID
Displays the downstream channel ID.
Frequency
Displays the downstream channel frequency on which the
device is scanning.
Power
Displays the receiver power level in decibel millivolts (dBmV)
after ranging process.
SNR
Displays the signal-to-noise ratio, the desired signal level to
the background noise level.
Correctables
Displays the quantity of codewords which are correctable.
Uncorrectables
Displays the quantity of codewords which are not correctable.
Upstream Bonded Channels
4.3
Channel
Numbers the upstream channels.
Lock Status
Displays if the DDW365 has locked successfully to an
upstream channel.
US Channel Type
Displays the channel type.
Channel ID
Displays the current upstream channel ID.
Symbol Rate
Displays the symbol rate in 1000 symbols per second.
Frequency
Displays the current upstream frequency in hertz.
Power
Displays the current upstream transmit power in decibel
millivolts (dBmV).
CM IP Address
Displays the DDW365’s IP address.
Duration
Displays the time the device has been active.
Expires
Displays when the cable modem’s certificate expires.
Using the Account Option
Use the Account option to change the Admin password and the User username and
passwords.
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Using the Diagnostics Option
Steps
To reset the DDW365’s usernames and passwords:
1. Click Status from the main menu.
2. Click Account from the left side menu. Field descriptions are listed below the screen
example.
Label
Description
User
4.4
New Username
Enter the new User username.
New Password
Enter the new User password.
Confirm Password
Confirm the new User password.
Apply
Saves the changes.
Using the Diagnostics Option
Use the Diagnostics option to test network connectivity. Two utilities are available: Ping
and Traceroute.
Topics
See the following topics:
 Using the Ping Option on page 21
 Using the Traceroute Option on page 23
4.4.1
Using the Ping Option
Use the Ping utility to test network connectivity between devices by sending a test
message to a specific device. You can also confirm the size of data sent is the same as
the size of data received.
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Using the Diagnostics Option
Steps
To test connectivity between devices:
1. Click Status from main menu.
1. Click Diagnostics from the left side menu.
2. Choose Ping from the Utility drop-down menu.
3. Enter new parameter values or accept the default values.
4. Click Start Test. Field descriptions are listed below the screen example.
Label
Utility
Description
Provides a drop-down menu to choose Ping or Traceroute.
Ping Test Parameters
Target
Defines the IP address to which you want to send a ping.
Ping Size
Defines the packet size (bytes of data) to send for the ping
operation. Default is 64.
No. of Pings
Defines the number of ping commands to send to the ping
target. Default is 3 pings.
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Using the Diagnostics Option
Label
4.4.2
Description
Ping Interval
Defines the interval between ping operations in milliseconds.
Start Test
Abort Test
Clear Results
Defines what action to take.
 Start Test begins the ping.
 Abort Test stops the ping.
 Clear Results deletes previous test results in the Results
table.
Results
Displays the results of the ping test.
Using the Traceroute Option
The Traceroute utility determines the IP addresses of hosts in the network path. By
checking the Resolve Host names box, Traceroute tries to find which name matches the
address. Some hosts have no names, and might still be shown as IP addresses, even if
this option is active.
Steps
To trace host IP addresses along a route:
1. Click Status from main menu.
2. Click Diagnostics from the left side menu.
3. Choose Traceroute from the Utility drop-down menu.
4. Enter new parameter values or accept the default values.
5. Click Start Test. Field descriptions are listed below the screen example.
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Using the Client List Option
Utility
Provides a drop-down menu to choose Ping or Traceroute.
Traceroute Parameters
4.5
Target
Defines the specific IP address or domain (for example,
google.com) to which you want to trace a route.
Max Hops
Defines the maximum number of hops. Hops are the number
of routers the traceroute traverses. Default is 30.
Data Size
Defines the data size to send for the traceroute operation. The
default is 64.
Base Port
Defines the destination port number. Default is 33434.
Resolve Host
Enable (on) or disables (off) this option. When checked,
traceroute tries to find the name that matches the IP address.
Default is Off.
Start Test/Clear Results
Defines what you want to do:
 Start Test begins the traceroute.
 Clear Results deletes previous test results in the Results
table.
Results
Displays the results of the trace.
Using the Client List Option
The Client List screen displays computers and devices connected to the DDW365.
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Using the Client List Option
Steps
To view a list of connected devices:
1. Click Status from the main menu.
2. Click Client List from the left side menu. Field descriptions are listed below the
screen example.
Label
Description
CPE Interface Status
Interface
Displays the interface.
Status
Displays whether the CPE Interface is enabled or disabled.
Tools Client List
Host Name
Displays the host name of the DHCP client connected to the
DDW365.
IP Address
Displays the IP address of the DHCP client connected to the
DDW365.
MAC Address
Displays the MAC address of the DHCP client connected to the
DDW365.
Interface
Displays the method of how clients are connected to the
device (for example, Ethernet LAN, Wireless).
Refresh
Refreshes the client list. This may be useful when testing
network connectivity between connecting clients and the
DDW365.
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4.6
Using the User Default Option
Using the User Default Option
The User Default option allows you to restore factory defaults to the Firewall and
Parental Control settings. All other networking settings are not cleared and reset (for
example, wireless settings).
Steps
To restore user defaults:
1. Click Status from the main menu.
2. Click User Default from the left side menu. Field descriptions are listed below the
screen example.
Label
Description
Restore User Defaults
Restores settings to factory defaults. Select Yes, then Apply, to
restore the device to the default Firewall and Parental Control
Content Filter settings. This operation does not require a reset
(power cycle) of the device.
Reset The System
Resets the system. Select Yes to power cycle the device.
When you select Apply, you will be notified that the device has
been reset. Click RELOAD. The Login screen will then appear.
Apply
Applies the options selected on this screen.
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5
Understanding the Basic Menu
Basic gateway options provide the majority of configuration for the device including WAN
IP addresses, LAN IP addresses, and DHCP. Advanced gateway options provide settings
like MAC filtering and port forwarding.
Topics
See the following topics:





Using
Using
Using
Using
Using
the
the
the
the
the
Setup Option on page 27
DHCP Option on page 29
DDNS Option on page 31
Backup Option on page 32
Time Option on page 35
Steps
To access the basic menu:
1. Access the Web user interface. Refer to Accessing the Web User Interface Locally on
page 13.
2. Click Basic from the main menu.
5.1
Using the Setup Option
Use the Setup option to configure common gateway parameters.
Steps
To configure setup options:
1. Click Basic from the main menu.
2. Click Setup from the left side menu. Field descriptions are listed below the screen
example.
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Using the Setup Option
Label
Description
LAN
IP Address
Defines the local IP address, which is the default gateway
address for all wired LAN hosts that connect to the DDW365.
MAC Address
Displays the LAN interface’s hardware address.
Interface/Prefix
None Specified
Indicates no interface or prefix has been specified.
WAN
IP Address
Displays the current WAN public IP address obtained from the
service provider.
MAC Address
Displays the WAN interface’s hardware address.
Duration
Displays the accumulated time since successfully acquiring a
WAN public IP address.
Expires
Displays the remaining time before the WAN IP address
expires, if applicable.
IPv4 DNS Servers
Lists the DNS servers available on the network.
Release WAN Lease
Releases the WAN public IP address when clicked.
Renew WAN Lease
Renews the WAN IP address when clicked.
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Using the DHCP Option
Label
5.2
Description
WAN Connection Type
Selects the WAN connection type. For each type, different data
entry is required, as explained below:
 DHCP: The WAN interface is set to a DHCP client, and
the IP address is assigned by the service provider’s DHCP
server.
 Static IP: For Static IP, you must manually enter the IP
address for the WAN interface.
 PPTP (dhcp): For Point to Point Tunneling Protocol
(PPTP), you must enter a username, password, and the
PPTP server’s IP address.
 PPTP (static):
 L2TP (dhcp):
 L2TP (static):
Host Name
Defines the host name for the router. This may be required by
some service providers.
Domain Name
Defines the domain name for the router. This may be required
by some service providers.
IPv4 MTU Size
Defines the maximum transmission unit (MTU) size. MTU
defines the largest size of the packet or frame that the device
can transfer (256-1500). If this is not given by your service
provider, use 0 for the default.
Apply
Saves changes.
Using the DHCP Option
Use the DHCP option to configure dynamic host configuration protocol-specific behavior
on the device.
Steps
To configure DHCP settings:
1. Click Basic from the main menu.
2. Click DHCP from the left side menu. Field descriptions are listed below the screen
example.
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Using the DHCP Option
Label
DHCP Server
Description
Enables (Yes) or disables (No) DHCP on the device. If No is
selected, all the static DHCP rules in this screen are ignored.
Starting Address Set
Private Starting Address
Defines the starting private IP address for the pool of IP
addresses that can be used by connecting clients. Private
addresses are translated to public IPs to be used on the
network.
Public Starting Address
Defines the starting public IP address. Public addresses can
be recognized on the network.
Number of CPEs
Defines the maximum number of customer premises
equipment devices (CPE) that can connect to the network
through the DDW365.
Lease Time
Defines the DHCP lease time duration in minutes between 1
and 71582788. A DHCP user's PC gets an IP address with a
lease time. When the lease time expires, the PC must connect
to the DHCP server and be issued a new unused IP address.
Note: The default DHCP lease time is 3600 seconds and
should be changed to 86400 seconds (24 hours). This helps
resolve connectivity issues with some iMAC and Windows 7
devices that turn off the network interface when they go into
standby mode. This results in slow Web browsing until the
device gets a new IP address via DHCP.
Apply
Saves changes.
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Using the DDNS Option
Label
5.3
Description
DHCP Clients
Lists all DHCP clients currently connected to the device, either
via an Ethernet connection, or via a wireless connection. Each
client is listed with the following information:
 MAC Address / IP Address / Subnet Mask
 Duration: Duration displays the accumulated time since
the client acquired the IP address.
 Expires: Expires is the time until the IP expires and must
be recycled. If the IP address is reserved to a certain
host, it shows STATIC IP ADDRESS.
 Select: Reserves the current private IP address to be
assigned to this host statically when selected.
Current System Time
Displays the current system time.
Force Available
Activates a selected rule in the DHCP Clients list and assigns
IP addresses. Note: The Select button must be activated in the
DHCP list.
Using the DDNS Option
Use the dynamic domain name system (DDNS) to assign a changing IP address to a
constant pre-defined host name. The host can then be contacted by other hosts on the
Internet, even if its IP address changes.
The DDNS service for the DDW365 is provided through a third-party and can be
purchased from Dynamic Network Services Inc. at www.dynDNS.com.
Steps
To use the DDNS option:
1. Click Basic from the main menu.
2. Click DDNS from the left side menu. Field descriptions are listed below the screen
example.
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Using the Backup Option
Label
5.4
Description
DDNS Service
Enables or disables the DDNS service. When enabled, this
service is available from www.dynDNS.org.
User Name
Defines the user name for the DDNS account.
Password
Defines the password for the DDNS account.
Host Name
Defines the host name for the DDNS account.
IP Address
Displays the IP address for the DDNS account.
Status
Displays if the DDNS service is enabled or disabled.
Apply
Saves changes.
Using the Backup Option
The Backup option lets you backup your gateway configuration or restore the DDW365 to
a previously saved configuration.
Steps
To use the backup option:
1. Click Basic from the main menu.
2. Click Backup from the left side menu.
5.4.1
Backing Up the Current Configuration
To backup and save the current modem configuration, click the Backup button.
A pop-up window appears instructing you to select ‘Save’ when prompted. Click ‘OK’.
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Using the Backup Option
The following window appears, giving you the option to save the file. Click the ‘Save File’
option and click ‘OK’.
The file will be saved to your Downloads folder as a binary file (.bin) titled
‘GatewaySettings.bin.’
5.4.2
Restoring the DDW365 to a Previously Saved Configuration
To restore the device to a previously saved configuration, click the Browse button.
The File Upload dialog box appears and allows you to select the previously saved backup
file. Highlight the file and click ‘Open’.
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Using the Backup Option
The location for the backed up file appears in the box to the left of the Browse button.
Click the Restore button.
You are advised that you will be required to reboot the device. Click ‘OK’.
You are then notified that the device has been reset. Click ‘RELOAD’.
You are then presented with the login screen. Enter the Username and Password to
return to the User Interface.
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5.5
Using the Time Option
Using the Time Option
The Time option allows you to configure the system time obtained from the network
servers via Simple Network Time Protocol (SNTP). SNTP is a protocol for synchronizing
the clocks of computing devices over networks. The device must be reset for changes to
take effect.
Steps
To configure system time:
1. Click Basic from the main menu.
2. Click Time from the left side menu. Field descriptions are listed below the screen
example.
Label
Description
Enable SNTP
Enables (Yes) or disables (No) the SNTP feature.
Current Time
Displays the current system time.
System Start Time
Displays the time the system was started.
Time Server 1
Defines the IP address or domain name of the time server.
Use the one provided or enter an alternative choice.
Time Server 2
Defines the IP address or domain name of the time server.
Use the one provided or enter an alternative choice.
Time Server 3
Defines the IP address or domain name of the time server.
Use the one provided or enter an alternative choice.
Time Zone Offset
Defines the time zone offset in hours and minutes from
Greenwich Mean Time. For example: 8 hours means GMT +8,
-1 hour means GMT -1.
Apply
Saves changes.
Reset Values
Resets the screen to factory defaults when clicked.
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6
Understanding the Advanced Menu
Advanced options provide settings to configure your DDW365, such as MAC filtering and
port forwarding.
Topics
See the following topics:








Using
Using
Using
Using
Using
Using
Using
Using
the
the
the
the
the
the
the
the
Options Option on page 36
IP Filtering Option on page 39
MAC Filtering Option on page 40
Port Filtering Option on page 41
Forwarding Option on page 43
Port Triggers Option on page 47
Pass Through Option on page 49
DMZ Host Option on page 50
Steps
To access the advanced menu:
1. Access the Web User Interface. Refer to Accessing the Web User Interface Locally on
page 13.
2. Click Advanced from the main menu.
6.1
Using the Options Option
Use the Options option to define which networking protocols are enabled or disabled on
the device. The network address translation application-level gateway (NAT ALG) settings
provide additional security beyond the firewall.
Steps
To enable or disable network protocols:
1. Click Advanced from the main menu.
2. Click Options from the left side menu. Field descriptions are listed below the screen
example.
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Using the Options Option
Label
Description
WAN Blocking
Blocks connection requests initialized from Internet users
when enabled. WAN Blocking must be disabled to be able to
PING the WAN gateway IP.
Ipsec PassThrough
Forces the router to redirect the IPSec request to the local
host when enabled. NAT fails this attempt if Internet users
initialize an IPSec VPN request to a host located behind the
router.
PPTP PassThrough
Forces the router to redirect the PPTP request to the local host
when enabled. NAT fails this attempt if Internet users initialize
a PPTP VPN request to a host located behind the router.
Remote Config Management
Enables or disables access to the device from a remote
system in order to configure settings. Remote management
can be achieved by using SNMP, web/HTTP or telnet.
Multicast Enable
Optimizes the bandwidth utilization compared with unicast
(especially video streaming applications).
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Using the Options Option
Label
Description
UPnP Enable
Activates Universal Plug and Play (UPnP) when enabled. A
UPnP device can dynamically join a network, obtain an IP
address, convey its capabilities, and learn about other devices
on the network. In turn, a device can leave a network smoothly
and automatically when it is no longer in use. Gaming
consoles and Web cameras are examples of devices that can
use UPnP.
Primary Network Bridged
When enabled, all wireless traffic sourced from the primary
SSID will be bridged.
DNS Relay
Allows the DDW365 to act as the “relay” device. Each PC that
wants to access a URL does not have to send a DNS request
to a DNS server on the Internet. DNS is used to resolve a URL
(Web site name) to an IP address. DNS Relay is typically used
for commercial applications where each device/PC connected
to the device uses the DNS Relay address rather than going to
a public DNS server hosted by an ISP to look up a URL.
NAT ALG Status – Filters to allow (enable) or disallow (disable) protocols to pass through the
DDW365 to connected devices (computers, game consoles, and so on).
RSVP
Enables or disables resource reservation protocol (RSVP).
RSVP defines how applications reserve resources and how
they free the reserved resources once they are no longer
needed.
FTP
Enables or disables the file transfer protocol (FTP) used to
transfer files from one host to another.
TFTP
Enables or disables the trivial file transfer protocol (TFTP) – a
simpler protocol generally used for automated file transfers.
Kerb88
Enables or disables the Kerberos network authentication
protocol which allow nodes to communicate over a non-secure
network using “tickets” on port 88 to prove their identity to one
another.
NetBios
Enables or disables the network basic input/output system
(NetBIOS) services related to the OSI session layer. NetBIOS
allows applications on separate computers to communicate
over a LAN.
IKE
Enables or disables the network key exchange (IKE) protocol
used to set up a security association (SA) in the IPsec protocol
suite.
RTSP
Enables or disables the real time streaming protocol (RTSP)
network control protocol used to establish and control media
sessions between end points.
Kerb1293
Enables or disables the Kerberos network authentication
protocol which allows nodes to communicate over a nonsecure network using “tickets” on port 1293.
H225
Enables or disables the H.225 protocol used to define
messages and procedures for call signaling, media
packetization, and registration, admission, and status (RAS)
functions.
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Using the IP Filtering Option
Label
6.2
Description
PPTP
Enables or disables the point-to-point tunneling protocol
(PPTP) used to implement a virtual private network.
MSN
Enables or disables the Microsoft network protocol used for
instant messaging.
SIP
Enables or disables the session initiation protocol application
layer gateway (SIP ALG). SIP ALG inspects protocol packets
and formats SIP message headers and SDP body to ensure
proper signaling. Note: Some hosted VoIP services prefer this
function to be performed by their own session border controller
(SBC) and require the SIP ALG to be disabled. Some IP-PBXs
may require SIP ALG enabled.
ICQ
Enables or disables the ICQ instant messaging program.
IRC666x
Enables or disables the Internet relay chat (IRC) protocol used
for text messaging.
ICQTalk
Enables or disables the ICQTalk instant messaging program.
Net2Phone
Enables or disables Net2Phone SIP- and PacketCable-based
VoIP.
IRC7000
Enables or disables the Internet relay chat protocol on TCP
port TCP 7000 used for text messaging and group forums.
IRC8000
Enables or disables the Internet relay chat protocol on UDP
port 8000 used for text messaging and group forums.
Apply
Saves changes.
Using the IP Filtering Option
Use the IP Filtering option to filter IP addresses to block Internet traffic to specific
network devices on the LAN. Any host on this list is not accessible to Internet traffic.
Note
You may also filter by the MAC address which does not require setting a static lease.
Refer to Using the MAC Filtering Option on page 40.
Steps
To filter IP addresses:
1. Make sure a PC is connected to the DDW365 and both devices are powered on and
functioning.
2. Log in to the DDW365 Web user interface. Refer to Accessing the Web User Interface
Locally on page 13.
3. Click Advanced from the main menu.
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Using the MAC Filtering Option
4. Click IP Filtering from the left side menu. Field descriptions are listed below the
screen example.
Label
6.3
Description
Start Address
Defines the starting IP address to block.
End Address
Defines the ending IP address to block.
Enabled
Activates the rule when enabled is checked.
Apply
Saves changes.
Using the MAC Filtering Option
The MAC Filtering option allows you to filter MAC addresses to block Internet traffic from
specific network devices on the LAN. MAC filtering establishes a list and any host on this
list is not able to access the network through the DDW365.
Steps
To filter MAC addresses:
1. Note the MAC addresses of the devices that you want to deny Internet access.
Be sure all devices to which you potentially deny Internet access are connected to the
DDW365 network.
2. Click Advanced from the main menu.
3. Click MAC Filtering from the left side menu.
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Using the Port Filtering Option
4. Enter the MAC address to block in the text box to the left of the Add MAC Address
button.
5. Click the Add MAC Address button. The MAC address is displayed in the filtered
MAC address list. Field descriptions are listed below the screen example.
Label
6.4
Description
MAC Addresses
Defines the MAC address to block. Enter the MAC address in
the field.
Add MAC Address
Adds the MAC address to the list of addresses to block.
Addresses entered: n/20
Displays the MAC addresses to be blocked. The number of
MAC addresses entered is shown as 1/20 where 1 is the
number of addresses in the list. You can filter up to twenty
MAC addresses at one time.
Remove MAC Address
Deletes the selected MAC address from the list of addresses
to be blocked.
Clear All
Removes all MAC addresses from the list.
Using the Port Filtering Option
Use the Port Filtering option to configure port filters to block to all devices on the LAN
Internet services that use the ports specified.
Steps
To configure port filters:
1. Click Advanced from the main menu.
2. Click Port Filtering from the left side menu. Field descriptions are listed below the
screen example.
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Using the Port Filtering Option
For example:
To prevent all Telnet access into and across your LAN:
1. Enter the Start and End ports to be 23.
2. Select Both for Protocol to include TCP and UDP.
3. Check Enabled.
4. Click Apply. Field descriptions are listed below the screen example.
Caution
Use caution when assigning port filtering by port range. You may accidentally prevent
traffic that should pass through your network, such as http or email. Pre-assigned
application ports are displayed on the Forwarding screen. Refer to Using the Forwarding
Option on page 43.
edffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff.l
Label
Description
Start Port
Defines the starting port number
End Port
Defines the ending port number.
Protocol
Selects the protocol type. Options are UDP, TCP, or Both.
Enabled
Activates the rule and filters out all traffic on the specified
ports.
Apply
Saves changes.
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6.5
Using the Forwarding Option
Using the Forwarding Option
Forwarding tells the DDW365 to which computer on the local area network to send data.
If your host systems or applications have communications issues with the Internet, you
can use forwarding to resolve the following issues:
 Data is sent from a local host to the Internet, but the return path of expected data is
not received by your local host.
 An application or service running on your local network (on local host) cannot be
accessed from the Internet directly (for example, a request to a local audio server).
Examples are:
 Xbox/PlayStation – Games/applications
 Home Security Systems – Security systems that use the Internet
 Audio Servers/VoIP – Audio and VoIP applications and services
Topics
See the following topics:
 Before Setting Up Forwarding on page 43
 Setting Up Forwarding on page 44
 Setting Up Forwarding for an Xbox Example on page 46
6.5.1
Before Setting Up Forwarding
Try the following options before you assign forwarding rules:
1. Enable Universal Plug and Play (UPnP). This may resolve the issue you have without
setting up forwarding rules.
a. Access the Web interface of the DDW365, see Accessing the Web User Interface
Locally on page 13.
b. Click Advanced from the main menu.
c. Click Options from the left menu.
d. Check the Enable UPnP box
.
e. Click Apply.
f.
Test your local host or application such as your Xbox to see if it is functioning
properly. Continue with port forwarding if the host or application is not
communicating correctly.
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Using the Forwarding Option
2. Assign a Static IP lease to the client/host to which you are setting up forwarding. This
way, the IP does not change and disrupt your forwarding rules. For example, if you are
hosting a Web server in your internal network, and you wish to setup a forwarding rule
for it, assign a static IP lease to that system to keep the IP from renewing and
disrupting the forwarding rule.
6.5.2
Setting Up Forwarding
If the suggestions in Before Setting Up Forwarding on page 43 did not correct your
communication problem, use port forwarding.
You need the following information to set up port forwarding:
 IP address of each local host system (for example, Xbox) for which you need to setup
a port forwarding rule.
 Port numbers the local host’s application listens to for incoming requests/data (for
example, a game or other service). These port numbers should be available in the
documentation associated with the application.
Note
For detailed information on port forwarding, including how to set it up for specific
applications using specific network devices (for example, cable modems), refer to:
http://portforward.com or consult your host device or application user manual.
Steps
To set up forwarding:
1. Access the Web interface of the DDW365, see Accessing the Web User Interface
Locally on page 13.
2. Click Advanced from the main menu.
3. Click Forwarding from the left menu.
4. Click Create IPv4.
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Using the Forwarding Option
5. Enter information in the forwarding fields as shown in the screen shot below. Field
descriptions follow.
Label
Description
Local IP
Defines the IP address of the local LAN device to which the
forwarding rule applies. For example, an Xbox or PC.
Local Start Port
Defines the starting port number listened to by the server host
located in your LAN.
Local End Port
Defines the ending port number listened to by the server host
located in your LAN.
External Start Port
Defines the port number to start the range of ports to publish
to the Internet.
External End Port
Defines the port number to end the range of ports published to
Internet.
Note: Be very careful with ranges. Ports within a range are not
usable by other applications that may require them. It is
common and safer to enter the same port number as the start
and end of the range.
Protocol
Selects the protocol type. Options are UDP, TCP, or BOTH.
Description
Names the forwarding rule.
Enabled
Disables (Off) or enables (On) the forwarding rule.
Cancel
Stops creating the forwarding rule and returns you to the
previous Forwarding screen.
Apply
Saves changes.
Port Map
Shows a list of common applications and their ports.
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Using the Forwarding Option
Forwarding Table – Lists existing forwarding rules.
Remove All
Deletes all entries in the forwarding table.
Remove
Deletes the rule selected.
6. Click Apply. The forwarding rule is created and displayed in the table as shown
below. Additional field descriptions follow.
Label
6.5.3
Description
Edit
If Edit is selected, fields for the rule selected will be displayed.
Values can then be changed.
Remove
Deletes the selected rule.
Setting Up Forwarding for an Xbox Example
Following is an example of how you would set up a single Xbox running Modern
Warfare 2. Since multiple ports are used for the Xbox and the Modern Warfare 2 game, a
separate forwarding rule is set for each port. Multiple ports and forwarding rules may not
be required for other applications.
Steps
To set up port forwarding for an Xbox:
1. Click Advanced from the main menu.
2. Click Forwarding from the left side menu.
3. Enter the Xbox IP address in the Local IP field.
4. Define ports used by the Xbox in the Local Start Port and Local End Port fields.
Define the same ports used by the Xbox in the External Start Port and External End
Port fields.
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Using the Port Triggers Option
5. Create Port Forwarding rules per port. A rule set up for port 53 works only for port 53.
A port can be used only by one program at a time.
Note
You can set up applications/services to listen on one internal port. External Internet
users who want to access that application, address it using an external port, such as
an Audio server. Internal Ports are the ports to which local servers listen. External
Ports are the ports that the cable modem listens to from the WAN.
The following screen shot shows Forwarding set up for an Xbox.
6.6
Using the Port Triggers Option
Port Triggers define dynamic triggers to specific devices on the LAN. This allows special
applications that require specific port numbers with bi-directional traffic to function
properly. Applications such as video conferencing, voice, gaming, and some messaging
program features may require these special settings.
Some services use a dedicated range of ports on the client side and a dedicated range of
ports on the server side. The difference between port forwarding and triggering is:
 Port forwarding sets a rule to send a service to a single LAN IP address.
 Port triggering defines two kinds of ports: trigger port and target port. The trigger
port sends a service request from a LAN host to a specific destination port number.
The port the LAN host is required to listen to by the application is called the target
port. The server returns responses to these ports.
For example:
1. John requests a file from the Real Audio server (port 7070). Port 7070 is a “trigger”
port and causes the device to record John’s computer IP address. The DDW365
associates John's computer IP address with the “target” port range of 6970-7170.
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Using the Port Triggers Option
2. The Real Audio server responds to a port number ranging between 6970-7170.
3. The DDW365 forwards the traffic to John’s computer IP address.
4. Only John can connect to the Real Audio server until the connection is closed or
expires.
Steps
To set up port triggering:
1. Click Advanced from the main menu.
2. Click Port Triggers from the left side menu.
3. Click Create and enter information in the trigger fields.
4. Click Apply. The port trigger rule is created and displayed in the table. Field
descriptions are listed below the screen example.
Note
The following example shows the Port Triggering option set up for a dual Xbox
configuration.
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Using the Pass Through Option
Label
6.7
Description
Trigger Start Port
Defines a port number or the starting port number in a range
of port numbers.
Trigger End Port
Defines a port number or the ending port number in a range of
port numbers.
Target Start Port
Defines a port number or the starting port number in a range
of port numbers.
Target End Port
Defines a port number or the ending port number in a range of
port numbers.
Protocol
Defines the protocol type for this rule, UDP, TCP, or Both.
Description
Names the triggering rule.
Enabled
Enables (on) or disables (off) the triggering rule.
Apply
Saves changes.
Using the Pass Through Option
Use the Pass Through option to configure a pass through table. Devices in the pass
through table are treated as bridge devices, storing and forwarding data between LAN
interconnections.
Steps
To configure a pass through table:
1. Click Advanced from the main menu.
2. Click Pass Through from the left side menu. The pass through fields are explained
following this screen example.
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Using the DMZ Host Option
Label
6.8
Description
Pass Through MAC Addresses
Defines the input host’s MAC address.
Add MAC Address
Adds the input host’s MAC address.
Addresses entered: n/32
Displays the MAC addresses to be blocked. The number of
MAC addresses is shown as 0/32 where 0 is the number of
addresses in the list. You can add up to 32 MAC addresses at
one time.
Remove MAC Address
Removes the input host’s MAC address.
Clear All
Removes all of the input host’s MAC addresses.
Using the DMZ Host Option
Use the DMZ (Demilitarized Zone) Host option to expose a host IP address to the WAN
(public Internet). You can use this option when applications do not work with port triggers
or other networking strategies.
Steps
To set up a DMZ host:
1. Connect a PC to an Ethernet port on the DDW365. Make sure both devices are
powered on and functioning.
2. Connect a Home Gateway (or other device you wish to be in the DMZ) to an Ethernet
port on the DDW365.
3. Log in to the DDW365 Web user interface.
4. Click Advanced from the main menu.
5. Click DMZ Host from the left side menu.
6. Enter the IP address of the Home Gateway (host device) to be exposed to the WAN.
7. Test the device to ensure Internet access is available and the device is functional. For
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Using the DMZ Host Option
example, connect to the Internet from a PC connected to the Home Gateway.
Label
Description
DMZ Address
Defines the IP address of the host to be exposed.
Apply
Saves changes.
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7
Understanding the Firewall Menu
Use these instructions to configure the DDW365 firewall settings to control what types of
traffic are allowed on your network. The firewall can block certain Web-oriented cookies,
Java scripts, and pop-up windows. It is highly recommended the Firewall is left enabled at
all times to protect against denial of service (DoS) attacks. Refer to Using the Basic Option
on page 52 to block Internet access to specific sites.
Note: Firewall menu options are not available when the device is in Bridge mode.
Topics
See the following topics:
 Using the Basic Option on page 52
 Using the Local Log Option on page 53
 Using the Remote Log Option on page 54
Steps
To access the firewall menu:
1. Access the Web user interface. Refer to Accessing the Web User Interface Locally on
page 13.
2. Click Firewall from the main menu.
7.1
Using the Basic Option
Use the Basic option to filter Web content to block certain Web-oriented cookies, Java
scripts, and pop-up windows.
Steps
To filter Web content:
1. Click Firewall from the main menu.
2. Click Basic from the left side menu. Field descriptions are listed below the screen
example.
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Using the Local Log Option
Label
7.2
Description
IPv4 Firewall Protection
Defines the level of protection. Choices are Off, Low, Medium,
and High. Services are based on the protection level and
displayed in the Allowed Services window.
Block Fragmented IP Packets
Detects fragmented IP packets and blocks them.
Port Scan Detection
Detects port scans that probe for available ports and
potentially use these ports to detect weakness in the network.
IP Flood Detection
Detects IP flood attacks that send excessive information to the
device, using up bandwidth.
Apply
Saves changes.
Using the Local Log Option
Use the Local Log to define firewall event log reporting through email alerts and report on
possible attacks on the system.
Steps
To define local log reporting:
1. Click Firewall from the main menu.
2. Click Local Log from the left side menu. Field descriptions are listed below the screen
example.
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Using the Remote Log Option
Label
7.3
Description
Contact Email Address
Defines the email address where you want to send the log.
SMTP Server Name
Defines the name of the SMTP server, such as
smtp.example.com.
SMTP Username
Defines the username for the email address, such as
smtp.username.
SMTP Password
Defines the password for the email address.
E-mail Alerts
Enables or disables log reporting.
Apply
Saves the settings and completes the setup.
E-mail Log
Sends the log to the specified email address.
Clear Log
Deletes the log.
Using the Remote Log Option
Use the Remote Log option to define events and send the log to a local SysLog server.
Steps
To configure the firewall remote log:
1. Click Firewall the main menu.
2. Click Remote Log from the left side menu. The Remote Log fields are explained
following this screen example.
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Using the Remote Log Option
Label
Description
Permitted Connections
Logs all access attempts that are allowed by the firewall.
Blocked Connections
Logs all access attempts that are blocked by the firewall.
Known Internet Attacks
Logs all known attacks from the Internet.
Product Configuration Events
Logs when the DDW365 is configured/modified by a user or
administrator.
to SysLog server at 192.168.0.
Defines the IP address of the Syslog server.
Apply
Saves changes.
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8
Understanding the Parental Control Menu
Parental Controls allow you to control Internet access for users on the DDW365 network.
Parental Controls provides the following features:




Define user/password access.
Block specific Web sites and Web sites based on keywords.
Define the times users are allowed to access the Internet.
View a local log to view Internet activity.
Topics
See the following topics:




Using
Using
Using
Using
the
the
the
the
Parental Control User Setup Option on page 56
Basic Option on page 58
ToD Filter Option on page 60
Local Log Option on page 61
Steps
To access the parental control menu:
1. Access the Web interface. Refer to Accessing the Web User Interface Locally on page
13.
2. Click the Parental Control link from the top of the screen.
8.1
Using the Parental Control User Setup Option
The User Setup option allows you to configure which user accounts can or cannot
connect to your wireless or wired network, and the parameters of each connection.
Steps
To configure user accounts:
1. Click the Parental Control link from the top of the screen.
2. Click User Setup from the left side of the screen. The User Setup fields are explained
following the screen example.
Note: To enable Parental Control, refer to Using the Basic Option on page 58.
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Label
Description
Add User
Remove User
Enable
Defines user accounts.
 To add a new user, type in the user name and click Add
User. The user then becomes selectable in the User
Settings drop-down menu.
 To select an existing user, choose the user from the User
Settings drop-down menu.
 To activate the user, check Enable.
 To remove a user, select the user from the drop-down
menu and click Remove User.
Password
Defines the password for this user. It is required when this
user tries to access the Internet via the device.
Re-Enter Password
Confirms the password with the re-entered password.
Trusted User
Defines the selected user as a trusted user when enabled is
checked. The user is limited to timing and content when
visiting the Internet, as defined in the following fields.
Content Rule
Selects from the pop-up menu an existing content rule that
defines what kind of Websites the user can visit or not.
White List Access Only
Selects the White List Access option. If you have created a
content rule that defines a black list and white list, select the
White List Access Only checkbox to force the DDW365 to
execute the policy for the selected user.
Time Access Rule
Selects a defined time access rule to apply to the selected
user.
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Label
8.2
Description
Session Duration
Allows you to enter a time in minutes for the user’s session to
expire. When the session expires, the user can log in again for
the same session duration.
Inactivity Time
Allows you to enter the time out value when a user has no
activity on the Internet. When the time expires, the user
interface to the Internet is canceled.
Apply
Saves all changes when clicked.
Trusted Computers
Defines the trusted hosts that can bypass the Parental Control
Process.
Add
Adds the trusted host’s MAC address entered in the given
area and Add is clicked.
Remove
Removes a trusted computer from the list when it is
highlighted and Remove is clicked.
Using the Basic Option
The Basic option allows you to select rules to block certain Internet content and Web
sites. After you change your Parental Control settings, click the appropriate Apply, Add, or
Remove button for your new settings to take effect. Refresh your browser’s display to see
the currently active settings.
Steps
To filter Internet content and Web sites:
1. Click the Parental Control link from the top of the screen.
2. Click Basic from the left side of the screen. The Basic fields are explained following
this screen example.
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Label
Description
Enable Parental Control
Activates the Parental Control feature when checked.
Apply
Saves all changes in the screen and activates Parental
Control, if enabled.
Content Policy Configuration
Add New Policy
Adds a policy to the Policy List. Enter the policy name and
click Add New Policy.
Content Policy List
Lists existing policies you can choose to use.
Remove Policy
Deletes a policy from the list. Select the policy from the list and
click Remove Policy.
Keyword List
Displays keywords you can use to block Web site addresses
(URLs) containing those words.
Add Keyword
Adds a keyword to the keyword list. Enter the word in the field
next to the Add Keyword button and click Add Keyword. The
keyword is added to the list.
Remove Keyword
Removes a keyword from the keyword list. Select the keyword
from the list, and click Remove Keyword.
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Label
Blocked Domain List
Displays Web domains (for example, unwanted.com) you can
use to block access to those domains.
Add Domain
Adds a domain to the Allowed Domain List. Enter a domain,
and click Add Domain.
Remove Allowed Domain
Removes a domain from the Allowed Domain List. Select the
domain from the list, and click Remove Domain.
Allowed Domain List
Displays domains you have added as Allowed Domains.
Add Allowed Domain
Adds allowed domains to the list. Enter the name and click
Add Allowed Domain.
Remove Allowed Domain
Removes domain names from the list. Highlight the domain
from the list and click Remove Allowed Domain.
Override Password
8.3
Description
If you encounter a blocked website, you can override the block
by entering a password.
Password
Enter a password for overriding blocked websites.
Re-Enter Password
Re-enter the password.
Access Duration
Set a time duration (in minutes) for access to the blocked site
when the block has been overridden by entering the password.
Apply
Saves the password and access duration time.
Using the ToD Filter Option
The ToD (Time of Day) Filter option allows the configuration of time-based access
policies to block all Internet traffic at specified times.
Steps
To configure ToD filters:
1. Click the Parental Control link from the top of the screen.
2. Click ToD Filter from the left side of the screen. The ToD Filter fields are explained
following this screen example.
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Label
8.4
Description
Add New Policy
Adds a new policy. Enter a policy name and click the Add New
Policy button.
Time Access Policy List
Lists the existing policies in a drop-down list.
Enabled
Activates a policy. Select the policy from the drop-down list
and check Enabled.
Remove
Deletes a policy. Select the policy from the drop-down list and
click Remove.
Days to Block
Selects the days to block Internet access.
Time to Block:
All Day or a specific time frame
Defines the time to block.
 To block all day, check All Day to eliminate all access
during the days selected.
 To block a specific time frame for the days selected, enter
the Start time and the End time. Select AM or PM for
each.
Ports to Block
Defines a port range to block if the Enabled box is checked.
 Port Start: Enter the starting port number to be blocked.
 Port End: Enter ending port number to be blocked.
 Protocol: Select the protocol type. Options are UDP, TCP,
or Both.
Apply
Saves all changes when clicked.
Using the Local Log Option
The Local Log option displays Parental Control event log reporting.
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Steps
To view the parental control local log:
1. Click the Parental Control link from the top of the screen.
2. Click Local Log from the left side of the screen. The Local Log fields are explained
following this screen example.
Label
Description
Last Occurrence
Displays the time when the last event occurred.
Action
Displays what is done by parental control, including dropping
or permitting access requests.
Target
Displays the destination IP address of a certain access
request.
User
Displays the user who triggered this event log.
Source
Displays the source IP address of this event.
Clear Log
To empty the displayed log entries, click Clear Log.
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9
Understanding the Wireless Menu
Use the Wireless menu to configure a wireless network.
Topics
See the following topics:






Using the Wireless Radio Option on page 63
Using the Primary Network Option on page 66
Using the Access Control Option on page 70
Using the Wi-Fi Multimedia Option on page 72
Using the Bridging Option on page 75
Deploying and Troubleshooting the Wireless Network on page 76
Steps
To access the wireless menu:
1. Access the Web interface. Refer to Accessing the Web User Interface Locally on page
13.
2. Click Wireless from the main menu.
9.1
Using the Wireless Radio Option
The Radio option is used to configure the wireless radio, including channel number, and
bandwidth control.
Steps
To configure wireless operations:
1. Click Wireless from the main menu.
2. Click Radio from the left side menu. Field descriptions are listed below the screen
example.
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Using the Wireless Radio Option
Label
9.1.1
Description
Wireless Interfaces
Displays the primary SSID. The default SSID is “DDW365”
plus the last 2 characters of the MAC address with the letters
entered in UPPER case.
Wireless
Displays the wireless radio’s status, Enabled or Disabled.
802.11 N Support Required
Defines whether 802.11n support is required (on) or not (off).
On forces the device to 802.11n mode and clients must
support 802.11n.
Bandwidth
Sets the bandwidth to 20Mhz, 40Mhz or Auto. For 40MHz, set
the sideband to lower or upper 20Mhz. 40 MHz channels
double the channel width. This allows doubling the PHY data
rate over a single 20 MHz channel.
Control Channel
Set to Auto by default, the Control Channel selects a specific
channel to deploy the wireless network. This allows you to set
the operating frequency/channel depending on your particular
region. Channel selection can have an impact on wireless
networking performance. For more information, refer to
Selecting a Wireless Channel on page 79.
For 20HMz bandwidth, options are
Auto,1,2,3,4,5,6,7,8,9,10,11. For Auto and 40MHz, options
are Auto,1,2,3,4,5,6,7.
Apply
Saves all screen changes when clicked.
Scan Wireless APs
Scans for other wireless access points and displays channel,
encryption, SSID, RSSI levels, and other information. See the
section below for more information.
Scanning for Wireless Access Points (APs)
You can search for wireless access points and display the results in a new window.
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Using the Wireless Radio Option
Steps
To search for wireless access points:
1. Click Scan Wireless APs at the bottom of the Wireless Radio screen. Results are
displayed in a new window.
2. Click Refresh to update the results.
Label
Description
Network Name
Displays the name of the wireless network (SSID) broadcast
by the access point.
Security Mode
Displays the encryption method used.
Mode
Displays the mode of the wireless access point: Possible
modes are:
 Master – Communicates with associated wireless cards
that are in managed mode. Appears as a normal access
point with an SSID and channel. Network
communications, such as authentication, conflict, and
duplicate packets are managed by the wireless card.
 Managed – Communicates with an associated master,
not directly with another managed AP. Wireless cards
connect to the master network and change their channel
to match. The master must accept the credentials of the
managed network for it to be associated.
 Ad-hoc – Communicates directly with another wireless
network. Network cards must be in range and use the
same name and channel.
 Monitor – Communicates in observation mode and does
not transmit. Can be used for troubleshooting wireless
links or checking bandwidth usage in the area.
PHY Mode
Displays the physical transceivers (PHY) layer method used.
RSSI
Displays the received signal strength (RSSI) of the wireless
access points in range of the device. Lower negative numbers
(for example, -1 to -65) indicate the access point is closer.
Greater negative numbers (for example, -66 to -95) indicate
the access point is farther away.
Channel
Displays the channel on which the DDW365 is operating.
BSSID
Displays the MAC address for the nearby wireless access
points.
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9.2
Using the Primary Network Option
Using the Primary Network Option
Use the Primary Network option to configure a variety of wireless security settings.
Steps
To configure wireless security options:
1. Click Wireless from the main menu.
2. Click Primary Network from the left side menu. Field descriptions are listed below the
screen example. This example shows the settings when the modem is in the 2.4GHz
band.
Wireless default values are discussed in Understanding Default Values and Logins on
page 8.
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Using the Primary Network Option
Label
Description
Primary Network
Enables or disables the primary network.
Network Name (SSID)
Defines the primary network name (SSID) to which client
devices connect. The default SSID is “DDW365” plus the last
2 characters of the MAC address with the letters entered in
UPPER case.
Closed Network
Hides the selected SSID when enabled so it is not visible to
wireless clients unless manually set up on the client. If
disabled, the SSID is visible. Closed Network is disabled by
default to allow broadcasting of the primary network name
(SSID). Refer to Enabling a Closed Network on the Primary
Network on page 70 to set up a closed network.
Note: WPS must be disabled before Closed Network can be
enabled.
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Using the Primary Network Option
Label
Description
AP Isolate
Disabled by default. When enabled, it prevents wireless client
stations from communicating with each other.
WPA
Enables or disables the Wi-Fi Protected Access (WPA)
security protocol. WPA is a subset of the IEEE 802.11i
standard. Key differences between WPA and WEP are user
authentication and improved data encryption. Setting WPA
alone with a pre-shared key requires a RADIUS or TACACS
server for authentication. This method is mostly used in large
enterprise implementations.
WPA-PSK
Enables or disables WPA Pre-Shared Key (WPA-PSK). If you
do not have an external RADIUS server, use WPA-PSK,
which requires a single (identical) password entered into
wireless gateway and wireless client. As long as the
passwords match, a client is granted access to the wireless
LAN.
NOTE: In order to enable WPA-PSK, you must first enable
WPA2-PSK. When WPA-PSK is enabled, the default
WPA/WPA2 encryption is TKIP+AES.
WPA2
Enables or disables WPA2. This advanced protocol is
certified through Wi-Fi Alliance's WPA2 program and
implements the mandatory elements of 802.11i. In particular,
it has an AES-based algorithm (CCMP) that is considered
fully secure. Setting WPA2 alone with a pre-shared key
requires a RADIUS or TACACS server for authentication.
This method is mostly used in large enterprise
implementations.
WPA2-PSK
Enables or disables WPA2-PSK. If you do not have an
external RADIUS server, use WPA2-PSK, which requires a
single (identical) password entered into wireless gateway and
wireless client. As long as the passwords match, a client is
granted access to the wireless LAN. This is the default
residential subscriber setting. It is more secure than WPAPSK. When only WPA2-PSK is enabled, the WPA/WPA2
encryption is AES.
WPA/WPA2 Encryption


WPA Pre-Shared Key
Displays the WPA key when “Show Key” is checked. The
encryption mechanisms for WPA and WPA-PSK are the
same, except that WPA-PSK uses a simple common
password instead of user-specific credentials.
Show Key
Displays the pre-shared key when checked.
RADIUS Server
Defines the IP address of the RADIUS server, if used.
RADIUS Port
Defines a RADIUS port number when WPA or 802.1x network
authentication is selected.
RADIUS Key
Defines the RADIUS Key when WPA or 802.1x network
authentication is selected.
When only WPA2-PSK is enabled, the default is AES.
When both WPA2-PSK and WPA-PSK are enabled, the
default is TKIP+AES.
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Using the Primary Network Option
Label
Description
Group Key Rotation Interval
Allows the device to generate the best possible random
group key and update all the key-management capable
stations periodically. This field is set to 0 by default.
WPA/WPA2 Re-auth Interval
Sends a new group key to all clients at the specified interval
for a wireless router (if using WPA-PSK key management) or
RADIUS server (if using WPA key management). The rekeying process is the WPA equivalent of automatically
changing the WEP key for a wireless access point and all
stations in the WLAN on a periodic basis. Setting the WPA
Group Key Update Timer is also supported in WPA-PSK
mode.
WEP Encryption
Enables or disables WEP encryption. If you do not have
wireless clients that can use WPA or WPA2, you can use WEP
key encrypting. A higher bit key offers better security. WEP
encryption scrambles the data transmitted between the wireless
stations and the DDW365 to keep network communications
private. It encrypts unicast and multicast communications in a
network. Both the wireless stations and the DDW365 must use
the same WEP key. Data Encryption can be set to WEP 128bit, 64-bit, or Disable.
Shared Key Authentication
Defines Shared Key Authentication as optional or required.
Shared Key is an authentication method used by wireless
LANs, which follow the IEEE 802.11 standard. Wireless
devices authenticate each other by using a secret key that is
kept by both devices.
802.1x Authentication
Enables or disables 802.1x to authenticate wireless clients.
Network Key 1-4
Pre-defines up to 4 keys for 64-bit or 128-bit (64-bit keys
require 10 hexadecimal digits) (128-bit key require 26
hexadecimal digits).
Current Network Key
Selects one of the four pre-defined keys as the current
network key.
Passphrase
Sets the WEP encryption key by entering a word or group of
printable characters in the Passphrase box and clicking
Generate WEP keys. These characters are case sensitive.
Generate WEP Keys
Forces the device to generate 4 WEP keys automatically.
Apply
Saves changes.
Automatic Security Configuration — Sets up WPS (Wi-Fi Protected Setup) for devices connecting
to the wireless network.
WPS/Disabled
Enables or disables WPS option. When enabled, the
following fields are available:
WPS Config State
Defines if the WPS has been configured or not.
Device Name
Defines a name for the DDW365 for WPS.
WPS Setup AP
UUID
Defines the universal unique identifier (UUID) for this device.
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Using the Access Control Option
Label
Description
PIN
Defines the Personal Identification Number for this device.
Generate AP PIN
Creates a new PIN for this device.
WPS Add Client
9.2.1
Add a client
Activates wireless protected setup (WPS) security on the
device.
To add a client:
1. Click Add a client. The WPS Add Client screen is
displayed.
2. Click PUSH on the WPS Add Client screen.The WPS
button is activated on the device, indicated by a flashing
white light on top of the unit.
3. Press the WPS button on the device.
Client PIN
Defines a PIN number for client access.
Authorized Client MAC
Defines the MAC address of the authorized client.
Enabling a Closed Network on the Primary Network
You can enable the Closed Network option so the SSID cannot be broadcast or seen by
others.
Steps
To enable a closed network:
1. Access the pull down menu for the Closed Network.
2. Choose Enabled to enable a closed network. Automatic Security Configuration is
disabled.
Note: WPS must be disabled before Closed Network can be enabled.
9.3
Using the Access Control Option
Use the Access Control option to configure which clients can access your wireless
network.
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Using the Access Control Option
Steps
To configure client access:
1. Click Wireless from the main menu.
2. Click Access Control from the left side menu. Field descriptions are listed below the
screen example.
Label
Description
Wireless Interface
Defines the network name (SSID) and MAC address for which
you are setting access control parameters.
MAC Restrict Mode
Controls wireless access to your network by MAC address.
 Disabled turns off MAC restrictions and allows any
wireless client to connect to this device. However, if you
use other security mechanisms for access to the wireless
network, clients must still adhere to those restrictions.
 Allow creates a list of wireless clients that can connect to
the wireless network. Enter the MAC addresses of these
clients in the MAC Addresses fields. MAC addresses not
on the list, are not allowed access to your wireless
network.
 Deny creates a list of wireless clients that you do not
want to have access to your wireless network. Enter the
MAC addresses of these clients in the MAC Addresses
fields.
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Using the Wi-Fi Multimedia Option
Label
9.4
Description
MAC Addresses
Defines the MAC addresses. Note: You may cut and paste
MAC addresses from the connected clients list at the bottom
of the screen.
Apply
Saves changes when clicked.
Connected Clients
Lists wireless clients currently connected listed by MAC
address.
 MAC Address – Displays the MAC addresses entered in
the MAC Addresses field (see above).
 Age(s) – Displays the duration since the wireless client’s
polled values were sent to the device. The values include
all information shown on this screen. The lower the
number, the more current its data.
 RSSI(dBm) – Displays the received signal strength from
the device to the DDW365. This value is commonly used
to assist in troubleshooting wireless performance issues.
A signal strength between 0dBm and -65dBm is
considered optimal. Levels of -66dBm and lower (for
example, -70, -80, etc.) have a downward impact on
wireless data throughput. Refer to Understanding
Received Signal Strength on page 76 for more
information.
 IP Address – Displays the IP address assigned to this
wireless client.
 Host Name – Displays the host name of the wireless
client.
 Mode – Indicates the applicable 802.11a/b/g/n standard
used by the connected client device.
 Speed (kbps) – Displays the maximum theoretical link
speed negotiated between the DDW365 and the client,
not including the overhead associated with encryption, and
so on. For example, actual speeds with WEP encryption
enabled are typically less than half of the negotiated link
speed. TKIP encryption can also affect performance.
AES is the most efficient and secure with the highest
throughput possible. You can disable WMM if throughput
on some client adapters is adversely affected.
Using the Wi-Fi Multimedia Option
Use the Wi-Fi Multimedia option to configure the quality of service (QoS) to ensure the
best service in your wireless networks.
 Controls WLAN transmission priority on packets transmitted over the wireless network.
 Wi-Fi Multi-Media Quality of Service (WMM QoS) is a part of the IEEE 802.11e QoS
enhancement to certified Wi-Fi wireless networks.
 WMM QoS prioritizes wireless traffic according to the delivery requirements of the
individual user and applications. On wireless access points without WMM QoS, all
traffic streams are given the same access priority to the wireless network. If a new
traffic stream creates a data transmission demand that exceeds the current network
capacity, the new traffic stream reduces the throughput of the other traffic streams.
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Using the Wi-Fi Multimedia Option
 WMM QoS capability allows you to assign access categories (ACs) to various packet
streams. The assigned AC of a packet stream depends on the packet’s priority, such
as a priority assigned by an application (also referred to as a user priority (UP). An AC
may include a common set of enhanced distributed channel access (EDCA)
parameters used by QoS to contend for a channel to transmit packets with certain
priorities.
Different ACs can be associated with different power saving parameters. For example,
one power saving parameter might be the delivery mechanism used by an access
point (AP) to deliver packets to a station (STA) that is operating in a reduced power
mode.
 WMM transmit opportunity (TXOP) is assigned to each access point. The bounded
time interval during which a station can send as many frames as possible as long as
the transmission time does not extend past the maximum duration of the TXOP. If a
frame is too large to be transmitted in a single TXOP, it should be fragmented into
smaller frames. Using TXOP reduces the problem of low rate stations gaining too
much channel time in the legacy 802.11 DCF MAC. A TXOP time interval of 0 means
it is limited to a single MAC service data unit (MSDU) or MAC management protocol
data unit (MMPDU).
Note
WMM may need to be disabled to avoid throughput impacts to other wireless devices.
Steps
To configure the multimedia wireless option:
1. Click Wireless from the main menu.
2. Click WMM (Wi-Fi Multimedia) from the left side menu. Field descriptions are listed
below the screen example.
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Using the Wi-Fi Multimedia Option
Label
Description
WMM Support
Enables (On) or disables (Off) WMM support.
No-Acknowledgement
Enables (On) or disables (Off) acknowledging data frames. In
QoS mode, frames to send can have two values: QosAck and
QosNoAck. Frames with QosNoAck are not acknowledged,
avoiding the retransmission of highly time-critical data.
Power Save Support
Enables (On) or disables (Off) power savings. WMM Power
Save increases the efficiency and flexibility of data transmission.
The wireless client device can “doze” between packets to save
power, while the wireless access point buffers downlink frames.
The application chooses the time to wake up and receive data
packets to maximize power conservation without sacrificing
quality of service.
Apply
Saves changes to the WMM settings above.
EDCA AP Parameters
Allows you to prioritize wireless network traffic. Enhanced
Distributed Channel Access – Access Point (EDCA-AP)
provides four access categories (ACs):
 AC_BE – Best Effort, medium throughput and delay. Most
traditional IP data is sent to this queue.
 AC_BK – Background, high throughput. Bulk data that
requires maximum throughput and is not time-sensitive is
sent to this queue (for example, FTP data).
 AC_VI – Video
 AC_VO – Voice
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Using the Bridging Option
CWmin
CWmax
AIFSN
TXOP (b) Limit (usec)
TXOP (a/g) Limit (usec)
Discard Oldest First
9.5
Sets the time for the following fields:
 CWmin – Contention window minimum
 CWmax – Contention window maximum
 AIFS – Arbitration inter-frame space
 TXOP – Transmit opportunity
 Discard Oldest First – Removes oldest frame when set to
On.
EDCA STA Parameters
Allows you to prioritize wireless network traffic for receiving
terminals. Access categories are:
 AC_BE – Best Effort, medium throughput and delay. Most
traditional IP data is sent to this queue.
 AC_BK – Background, high throughput. Bulk data that
requires maximum throughput and is not time-sensitive is
sent to this queue (for example, FTP data).
 AC_VI – Video
 AC_VO – Voice
WMM TXOP Parameters
WMM TXOP (Wireless Multi-Media Transmit Opportunity
Parameters) are used to control the Access Category (AC) for
each type of Wireless traffic, including Best Effort (BE),
Background (BK), Video (VI), and Voice (VO) traffic categories.
Transmission rates will automatically adjust for each category.
These settings should be left at their default values. WMM
TXOP Access categories are:
 AC_BE – Best Effort, medium throughput and delay. Most
traditional IP data is sent to this queue.
 AC_BK – Background, high throughput. Bulk data that
requires maximum throughput and is not time-sensitive is
sent to this queue (for example, FTP data).
 AC_VI – Video
 AC_VO – Voice
Short Retry Limit
Short Fallbk Limit
Long Retry Limit
Long Fallbk Limit
Max Rate in 500kbps
Defines how many times the MAC retries to send different types
of packets. If the number of retries reach their limit, the frame is
discarded.
Apply
Saves all changes.
Using the Bridging Option
Use the Bridging option to configure the DDW365 to act as a wireless network bridge
and establish wireless links with other wireless access points. To establish a bridge, you
need to know the MAC address of the peer device, that must be in wireless bridging mode
as well. The DDW365 can establish up to four wireless links with other wireless access
points. When wireless devices are in wireless bridging mode, they form a wireless
distribution system that allows computers in one LAN to connect to the computers in the
other LAN.
Caution
Avoid bridge loops when you enable bridging devices. Bridge loops cause broadcast traffic to
circle the network endlessly. This can degrade throughput and disrupt communications.
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Deploying and Troubleshooting the Wireless Network
Steps
To configure the modem as a bridge:
1. Click Wireless from the main menu.
2. Click Bridging from the left side menu. Field descriptions are listed below the screen
example.
Label
9.6
Description
Wireless Bridging
Enables or disables bridging.
Remote Bridges
Defines the MAC addresses of other wireless access points that
you want to establish a bridge to and from. These access points
must also have bridging enabled.
Apply
Saves all changes.
Deploying and Troubleshooting the Wireless Network
Use the information in this section to help you understand, deploy, and troubleshoot your
wireless environments:
 Understanding Received Signal Strength on page 76
 Estimating Wireless Cable Modem to Wireless Client Distances on page 77
 Selecting a Wireless Channel on page 79
Understanding Received Signal Strength
Received signal strength (RSSI) is measured from connected wireless client devices to
the DDW365. This value can significantly impact wireless speeds/performance. It is
determined by:
 Materials (for example, open air, concrete, trees)
 Distance between wireless clients and the wireless cable modem
 Wireless capabilities of the client devices
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Deploying and Troubleshooting the Wireless Network
To determine the received signal strength, refer to Using the Access Control Option on
page 70 and review the RSSI value. A receive signal strength indicator between 0 to -64
dBm is considered optimal. Levels of -67dBm and lower (for example, -70, -80, etc.) have
a downward impact on wireless data throughput.
Estimating Wireless Cable Modem to Wireless Client Distances
The information in this section helps you to determine how far a wireless cable modem
can be placed from wireless client devices. Environmental variances include the
capabilities of wireless clients and the types of material through which the wireless signal
must pass. When the wireless cable modem and wireless clients reach the distance
threshold between each other, network performance degrades.
Steps
To determine wireless cable modem placement:
1. Connect a wireless client to the wireless cable modem. Refer to Connecting Devices to
the Network on page 10 if needed.
2. Place the wireless client at around one meter (three feet) away from the wireless cable
modem.
3. Obtain the RSSI value for the connected client. Refer to Using the Access Control
Option on page 70. This value is used in the formula further below.
4. Use the following table to determine what materials the wireless signal must travel
through to reach the desired wireless coverage distance.
Attenuation Considerations at 2.4GHz
Material
Attenuation
Connector/Cable
3.5dB
Free Space
0.24dB / foot
Interior Drywall
3dB to 4dB
Cubicle Wall
2dB to 5dB
Wood Door (Hollow/Solid)
3dB to 4dB
Brick, Concrete Wall (Note 1)
6dB to 18dB
Glass Window (not tinted)
2dB to 3dB
Double Pane Coated Glass
13dB
Bullet Proof Glass
10dB
Steel / Fire Exit Door
13dB to 19dB
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Deploying and Troubleshooting the Wireless Network
Attenuation Considerations at 2.4GHz
Material
Attenuation
Human Body
3dB
Trees (Note 2)
0.15dB / foot
Note 1: Different types of concrete materials are
used in different parts of the world and the thickness
and coating differ depending on whether it is used in
floors, interior walls, or exterior walls.
Note 2: The attenuation caused by trees
varies significantly depending upon the shape
and thickness of the foliage.
5. Use the attenuation value from the materials table above in the following formula:
Formula:
(Transmit Power, use -30dBm) – (Receiver Sensitivity, use RSSI value) =
Allowable Free Space Loss
Allowable Free Space Loss ÷ Materials Attenuation Value =
Optimal Distance in Feet Between the Cable Modem and a Wireless Client
Example:
(-30dBm) - (-67dBm) = 37dBm (allowable free space loss for a 54Mbps
connection)
37dBm ÷.24db/foot (for open space) = 154.16 feet
6. Once you know the optimal feet distance between individual wireless clients and the
wireless cable modem, you may resolve and prevent some performance issues.
7. To check the wireless signal strength and speed, use the following steps for a
Windows computer connected wirelessly to the wireless cable modem. If the wireless
computer is not connected, refer to Connecting a Wireless Device on page 11.
a. Click the Wireless networking icon in the system tray to display a list of available
wireless networks.
b. Click the Wireless networking icon, click “Open Network and Sharing Center,” then
click “Wireless Network Connection.”
c. Review the speed and signal strength in the Status window.
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Deploying and Troubleshooting the Wireless Network
Selecting a Wireless Channel
You may need to change the wireless channel on which the DDW365 operates when you
are in computing, test, and other environments where several wireless access points may
be operating in the 2.4GHz range.
In some cases, you may want to segment your wireless traffic where a group of devices
operates on one channel and another group operates on another channel, and so on. This
is done by configuring the channel on each wireless access point individually (if you have
multiples). If you have control over only one wireless device in an environment where
there may be several, you can change the wireless channel on your device to one that is
not heavily used.
Note
To change the wireless broadcast channel, refer to Using the Wireless Radio Option on
page 63.
The following diagram displays the channels available in the Americas. Each available
channel is 22MHz wide. Since channels overlap, it is best to choose channels that have
the least overlap (typically 1, 6, and 11 in the Americas, and 1, 5, 9, and 13 in Europe).
Overlapping channels can cause wireless network performance issues.
Source: Wikipedia.org, and IEEE article IEEE 802.11n-2009
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10
Glossary
This chapter defines terms used in this guide and in the industry.
Broadcast
A packet sent to all devices on a network.
Cable Modem Termination System (CMTS)
Typically located in the cable company’s headend, the CMTS is equipment that provides
high-speed data services to subscribers, such as cable Internet and Voice over IP (VoIP).
Channel Bonding
A computer networking configuration where two or more network interfaces are combined
on a host computer for redundancy or increased throughput. Data is transmitted over
these channels as if they are one channel.
Customer Premises Equipment (CPE)
Equipment such as telephones, routers, and modems located at a user’s location to
enable access to communication services.
Default Gateway
The routing device used to forward all traffic that is not addressed to a computer on the
local subnet.
Demilitarized Zone (DMZ)
Allows one IP address (or computer) to be placed in between the firewall and the Internet
(usually for gaming and video conferencing). This allows risky, open access to the
Internet.
Domain
A subnetwork comprised of a group of clients and servers under the control of one
security database.
Domain Name
A descriptive name for an address or group of addresses on the Internet. Domain names
are in the form of a registered entity name plus one of a number of predefined top-level
suffixes, such as .com, .edu, .org.
Domain Name System (DNS)
An Internet service that locates and translates domain names into IP addresses. Because
domain names are alphabetic, they are easier to remember. However, the Internet is
based on IP addresses. Every time you use a domain name, a DNS service translates the
name into the corresponding IP address. The DNS system is actually its own network. If
one DNS server does not know how to translate a particular domain name, it asks another
one, and so on, until the correct IP address is returned.
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Glossary
Downstream
A term to describe the direction of data from the network service provider to the customer.
Dynamic Host Configuration Protocol (DHCP)
A protocol that centrally automates the assignment of IP addresses in a network. Using
the Internet’s set of protocols (TCP/IP), each machine that can connect to the Internet
needs a unique IP address. For example, when the service provider sets up computer
users with a connection to the Internet, an IP address is assigned to each machine.
DHCP lets the service provider distribute IP addresses and automatically sends a new IP
address when a computer is plugged in to the high-speed Internet network. DHCP uses
the concept of a “lease” or amount of time an IP address is valid for a computer. Lease
times can vary.
Ethernet
A standard network protocol that specifies how data is placed on and retrieved from a
common transmission medium. It forms the underlying transport vehicle used by several
upper-level protocols, including TCP/IP, HTTP, and FTP.
Firewall
A highly effective method to block unsolicited traffic from outside the connected
computers in your gateway and local network.
Gateway
A local device, usually a router, that connects hosts on a local network to other networks
– sometimes with different incompatible communication protocols. The DDW365 is an
example of a gateway.
Headend
A main facility to process and distribute Internet communication signals. Headend may
also refer to cable television signals and power line communication facilities.
Internet Protocol (IP)
The method or protocol by which data is sent from one computer to another on the
Internet. It is a standard set of rules, procedures, or conventions relating to the format and
timing of data transmission between two computers that they must accept and use to
understand each other. Used in conjunction with the Transfer Control Protocol (TCP) to
form TCP/IP.
Internet Service Provider (ISP)
A company that provides individuals and companies access to the Internet and other
related services.
Interval Usage Code (IUC)
Interval usage codes define different profiles for upstream burst profiles to use for the
data. IUCs are sent to the cable modem from the CMTS to tell the device important
characteristics to use for the burst, such as modulation type, preamble length, and so on.
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Glossary
IP Address
In the most widely installed level of the IP today, an IP address is a 32-bit binary digit
number that identifies each sender or receiver of information that is sent in packet form
across the Internet. When you request a Web page or send an e-mail, the IP part of
TCP/IP includes your IP address. IP sends your IP address to the IP address obtained by
looking up the domain name in the URL you requested or in the e-mail address to which
you are sending a note. A dynamic IP address is an IP address that is automatically
assigned to a client station in a TCP/IP network, typically by a DHCP server.
Local Area Network (LAN)
A group of computers and associated devices such as printers and servers that share a
common communication line and other resources within a small geographic area.
Maximum Transmission Unit (MTU)
The size in bytes of the largest packet that can be sent or received.
Media Access Control (MAC) Address
A unique number assigned by the manufacturer to any Ethernet networking device, such
as a network adapter, that allows the network to identify it at the hardware level. Usually
written in the form 01:23:45:67:89:ab.
Megabits per Second (Mbps)
A unit of measurement for data transmission that represents one million bits per second.
Network Address Translation (NAT)
A technique by which several hosts or computers share a single IP address for access to
the Internet. NAT enables a LAN to use one set of IP addresses for internal traffic and a
second set of addresses for external traffic, and provides a type of firewall by hiding
internal IP addresses.
Packet
A block of information sent over a network. A packet typically contains a source and
destination network address, some protocol and length information, a block of data, and a
checksum.
Ranging
A process in which a cable modem sends a range request at a power of 8 dBmV (very low
power). If it does not receive a range response from the CMTS, the cable modem retransmits the range request at a 3 dB higher power level and continues the process until
a range response is received.
Router
A device that forwards data between networks. An IP router forwards data based on IP
source and destination addresses.
Routing Information Protocol (RIP)
A protocol in which routers periodically exchange information with one another to
determine minimum-distance paths between sources and destinations.
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Glossary
Subnet
A portion of a network that shares a common address component. On TCP/IP networks,
subnets are defined as all devices whose IP addresses have the same prefix. For
example, all devices with IP addresses that start with 10.1.10 would be part of the same
subnet. IP networks are divided using a subnet mask.
Subnet Mask
Combined with the IP address, the IP subnet mask allows a device to know which other
addresses are local to it, and which must be reached through a gateway or router. A
number that explains which part of an IP address comprises the network address and
which part is the host address on that network.
Telnet
A network protocol used on the Internet or a local area network. Provides bi-directional
interactive text-oriented communications using a virtual terminal connection.
Terminal Access Controller Access-Control System (TACACS)
A remote authentication protocol used to communicate with an authentication server to
determine if the user is allowed to access the network.
Time Division Multiple Access (TDMA)
A method in which cable modems must time-share the upstream channel because there
are many cable modems and only one upstream channel frequency.
Transmission Control Protocol (TCP)
A method (protocol) used with the IP to send data in the form of message units
(datagrams) between network devices over a LAN or WAN. While IP handles the actual
delivery of the data (routing), TCP keeps track of the individual units of data (packets) that
a message is divided into for efficient delivery over the network. TCP requires the receiver
of a packet to return an acknowledgment of receipt to the sender of the packet.
Transmission Control Protocol/Internet Protocol (TCP/IP)
The basic communication language or set of protocols to communicate over a network
(developed specifically for the Internet). TCP/IP defines a suite or group of protocols.
Trivial File Transfer Protocol (TFTP)
A file transfer protocol used to transfer automatically configuration or boot files.
Uniform Resource Identifier (URI)
A string of characters used to identify a name or a resource on the Internet.
Uniform Resource Locator (URL)
A uniform resource identifier (URI) that specifies where a known resource is available and
how to retrieve it.
Upstream
A term to describe the direction of data from the customer to the network service provider.
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Wide Area Network (WAN)
A long-distance link or computer network that spans a relatively large geographical area
that connects remotely located LANs. Typically, a WAN consists of two or more LANs.
The Internet is a large WAN.
Wi-Fi Protected Access (WPA)
A security protocol for wireless networks offering improvements over the WEP protocol in
the way it handles security keys and the way users are authorized.
Wi-Fi Protected Setup (WPS)
A security protocol for wireless home networks. Created by the Wi-Fi Alliance, this
protocol allows home users to easily set up wireless security and add new devices without
needing to enter long passwords.
Wired Equivalent Privacy (WEP)
An encryption method used to protect your wireless data communications. WEP uses 64bit or 128-bit keys to provide access control to your network and security for everyday
transmissions. To decode data transmissions, all devices on the network must use an
identical key.
Wireless Local Area Network (WLAN)
A communications network that uses high frequency radio signals to allow wireless
devices to communicate with each other within a limited geographic area.
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