D-Link DWR-921 User manual

4G Integrated Access Device
User Manual
1. GETTING TO KNOW THE DWR-923 ...............................2
Introduction ............................................................................ 2
Package Contents .................................................................... 3
System Requirements ............................................................. 3
Hardware Overview - Front Panel & LEDs............................... 4
Hardware Overview - Rear Panel ............................................ 5
Hardware Overview - Side Panel............................................. 5
2. INSTALLATION ..............................................................6
3. USER CONFIGURATION INTERFACE ...............................7
Accessing the User Configuration Interface ............................ 7
Interface Layout ...................................................................... 8
Using the User Configuration Interface .................................. 9
Home ......................................................................................................9
Internet ................................................................................................11
Wi-Fi .....................................................................................................17
LAN .......................................................................................................26
Advanced ..............................................................................................30
System ..................................................................................................53
4. APPENDIX .................................................................. 62
Connected PC IP Address Configuration ............................... 62
1. Getting to know the DWR-923
1.1 Introduction
The DWR-923 is a 4G Integrated Access Device (IAD) that integrates a
range of methods for connecting to the Internet, allowing users to
access 4G mobile network services via a single device. Once connected,
you can easily share your network utilizing wireless Wi-Fi and wired
Ethernet interfaces. The advanced 4G technology provides much better
performance than traditional 3G networks.
1.2 Package Contents
Thank you for purchasing the DWR-923. Before using the DWR-923,
please confirm that the packaging includes the following items and
DWR-923 unit x 1
Ethernet cable x 1
Antenna x 2
RJ-11 cable
Swedish phone plug x1
Power adapter x 1
1.3 System Requirements
4G SIM card, with valid Internet service
A computer with a Windows®, Macintosh®, or Linux-based
operating system with an installed Ethernet adapter
Internet Explorer Version 6.0 or above for configuration usage
1.4 Hardware Overview - Front Panel & LEDs
Blinking Green
Blinking Yellow
System on
System booting
Firmware upgrading
Firmware upgrade error
No 4G signal received
Low 4G signal strength
Medium 4G signal strength
High 4G signal strength
Invalid Internet connection
Valid Internet connection
Blinking Green
Invalid VoIP server login
Successful VoIP server login
Off hook with successful VoIP server login
VoIP service is not subscribed
No 3G signal received
Low 3G signal strength
Medium 3G signal strength
High 3G signal strength
Blinking Green
Local wireless network ready
Data transmission over local wireless
1.5 Hardware Overview - Rear Panel
Phone ports
Connects to your phones for SIP VoIP
WAN port
LAN ports
Connects to your local network devices
such as PC and laptop
USB port
Optional external device connections
Power input port
Connects to the power adapter
Power button
Turns device on
1.6 Hardware Overview - Side Panel
WPS button
Quick wireless connection with
other WPS supported devices
SIM card slot
4G or 3G SIM card connection
USB port
Optional external device
2. Installation
1. Insert the SIM card provided by your 4G mobile network operator.
2. Insert the antennas into the antenna
connectors on the DWR-923. Rotate the
connector end of the antenna to fasten it.
3. Insert the Ethernet cable into one of the LAN ports on the rear
panel of the DWR-923. Insert the other end of this Ethernet cable
into the port of
the computer
that you will
use to
configure the
3. User Configuration Interface
3.1 Accessing the User Configuration Interface
The User Configuration Interface allows you to configure the DWR-923
using your web browser. Follow the procedures below to log in and
configure the settings:
1. Ensure that the computer you use for configuring the DWR-923
has the proper IP address settings for communicating with the
DWR-923. The default LAN network settings and IP address of the
DWR-923 are shown below:
IP address:
Subnet mask:
Note: Set the IP address of this computer to obtain an IP
address automatically or assign an IP address from
to The IP address range can be modified through
the User Configuration Interface, the default setting starts from
100. See Appendix - Connected PC IP Address Configuration for
detailed procedures for setting your IP address.
Open your web browser and type in the address field:
An authentication screen appears. See the default username and
password below:
Note: There is no default
password. Please leave the
password field blank.
3.2 Interface Layout
After logging in, the Home Screen appears. The User Configuration
Interface consists of three parts:
1 This part is the displayed content. In the Home page, basic system
status is displayed.
2 The menu bar of the User Configuration Interface. Click tabs to
access configuration pages of each function. Additional selections
will appear on the left hand side as you click the main tabs.
3 This part displays your Login status and provides links to refresh
the page and open the Help page.
3.3 Using the User Configuration Interface
3.3.1 Home
The status page displays basic system Information including a summary
of the Internet, system, Wi-Fi, Local Area Network (LAN) and connected
VoIP phones.
Network: Provides the current status of the interface used to access
the Internet.
Carrier: Provider name of your mobile network service.
Connection Time: Elapsed time the DWR-923 has been connected to
the Internet.
IP Address: The DWR-923’s Internet IP address.
Subnet Mask: The DWR-923’s Internet subnet mask.
DNS Server: IP address of the DNS server that the DWR-923 uses.
Gateway: The Internet gateway IP address.
System Information:
System Name: Displays the DWR-923’s configured name.
System Uptime: Elapsed time since the DWR-923 was last turned on or
HW Version: Hardware version that the DWR-923 is currently using.
SW Version: Firmware version that the DWR-923 is currently using.
SSID: Names of the DWR-923’s wireless networks.
Security: Encryption and authentication settings of each wireless
Channel: Current channel that the DWR-923 uses.
Total Clients: Number of client devices connected via Wi-Fi.
LAN1~4: Connection status of the four LAN ports of the DWR-923.
Subnet Mask: The DWR-923’s LAN subnet mask.
DHCP Pool: IP address range that the DWR-923 will assign from within.
Phone1 &2: Status of connected VoIP phones.
3.3.2 Internet
Internet Status
4G Connection Status:
Registration State: Status of connection to a network service.
Radio Interference: Any interference conditions that the DWR-923 has
RSSI: Received Signal Strength Indicator (RSSI) measures the strength of
received radio signals.
Signal Strength: Strength value of the received signal.
Network Name: Network name of the network connected to.
Mobile Country Code (MCC): Mobile country code of the connected
Mobile Network Code (MNC): Mobile network code of the connected
Cell ID: ID of the connected base transceiver station.
Transmit: Displays transmission status and related statistics.
Tx Packets: Number of IP packets transmitted from the DWR-923.
Tx Errors: Number of error packets transmitted from the DWR-923.
Tx Overflows: Number of overflows transmitted from the DWR-923.
Tx Bytes: Number of bytes transmitted from the DWR-923.
Receive: Displays receiving status and related statistics.
Rx Packets: Number of IP packets received by the DWR-923.
Rx Errors: Number of error packets received by the DWR-923.
Rx Overflows: Number of overflows received by the DWR-923.
Rx Bytes: Number of bytes received by the DWR-923.
Clicking Refresh will renew these data.
Internet PIN Configuration
This page allows configuration of the PIN code of your SIM card.
Use PIN: Select a PIN code to use to protect your SIM card.
Enable PIN Protection: Choose to enable or disable PIN protection. If
you choose Yes, you will be asked to enter the PIN code when you use
the phone feature.
Enter PIN: Enter the PIN code.
Click Verify PIN to proceed.
Internet Radio Configuration
Radio Mode: Select 3G or 4G for your mobile network or select Auto to
switch between available 3G/4G mobile networks automatically.
Radio Frequency: Select a radio frequency according to your region
and the frequency your service uses.
Internet Profile Configuration
This page displays the network profiles that are currently being used.
Select one from the list and then click Connect to establish a
connection, or click Edit to modify the selected profile.
Internet Network Scan
This function scans for nearby network providers.
4G Network Selection Method: Choose Auto to scan for network
providers automatically or choose Manual to scan manually.
After scanning, nearby network providers will be listed in the chart.
Select your desired network provider and then click Apply to apply the
changes or click Scan to scan again.
3.3.3 Wi-Fi
Wi-Fi Device List
This page displays the client devices that are currently connected to
the DWR-923 via Wi-Fi.
Wi-Fi Wi-Fi Settings
You will need to establish a wireless local area network (WLAN) to
connect your client devices with the DWR-923 wirelessly and to access
the Internet. You can mark the box of the SSID and click Edit to modify
its contents or click SSID Schedule to set a schedule rule for this
This page pops up when you click Edit in Wi-Fi Wi-Fi Settings.
Enable SSID: Choose to Enable or Disable the function.
SSID: The Service Set Identifier (SSID) is the name of the wireless
network broadcast from this system. In order for computers to connect
to the local network over a wireless link, they must select this network
name from the list of detected wireless networks in the area.
Security: Select one security method from the drop-down list.
None: No protection, open mode.
WPA Personal: Use WPA Personal for encryption.
WPA2 Personal: Use WPA2 Personal for encryption.
WPA+WPA2 Personal: Enables wireless with personal wireless
protected access mode.
WEP: Enables wireless with WEP protection, provides a 5/13 character
ASCII string to enable 64/128 bit encryption respectively. This option is
only recommended when your network device does not support WPA
or WPA2.
Password: Specify a password for your wireless network.
Show Plain Password: Check the box to make the password visible.
Click Apply to apply the changes. Or click Reset to undo your
configurations. After this step, you can use your wireless client devices,
such as your smart phone, to search for the WLAN with the SSID and
password that you just specified.
This page pops up when you choose to set a schedule rule for a
wireless network in Wi-Fi Wi-Fi Settings.
To set schedule rule for a network:
1. Click Add to add a new schedule rule.
Active Time: Mark the box to enable this schedule rule.
Schedule Name: Name of this schedule.
Start Time and Stop Time: The time that you wish to turn on or turn
off this wireless network.
2. Click Apply to apply the changes.
Wi-Fi WPS
Wi-Fi Protected Setup (WPS): WPS is a computing standard for easy
and secure setup of a wireless connection. In this section you can
enable WPS for a client connection using WPA/WPA2 security.
1. Check the box to enable WPS.
2. Click Apply to apply the changes. Or click Reset to undo your
Push Button Connect (PBC): If other wireless devices support the PBC
WPS function, click on Click for PBC and then push the WPS button on
the other device.
Personal Information Number (PIN): If other wireless devices support
the PIN WPS function, specify the same PIN for the DWR-923 and the
wireless device and then click Submit PIN to establish a connection.
Wi-Fi Wi-Fi Access Control
Access control allows you to block or allow computer devices from
establishing a wireless link to the DWR-923. The filtering is based on
the wireless computer’s unique hardware ID (MAC address). With this
feature you can prevent unknown or unauthorized computers from
accessing the DWR-923 and the services (like shares, DMC) it offers. In
most cases you know which devices will be connecting to the DWR-923
through a wireless connection, which allows you to add these known
devices to a list for authorized access. This feature helps in securing the
wireless connectivity of the home network.
Wireless Client Access Policy
Access Rule for Registered MAC Address:
Allow Everybody: Allows all devices to connect to the DWR-923
wirelessly regardless of the list of wireless computers defined below.
Allow: Allows devices that are added in the MAC address list to connect
to the DWR-923.
Deny: Devices that are added in the MAC address list will be blocked
when trying to connect to the DWR-923.
Click Apply to apply the changes. Or click Reset to undo your
List of MAC Addresses: This is the list of wireless devices that have
been added for the ACL policy.
MAC Address: The unique hardware ID of the local network wireless
Click Add to add an access policy, or select an item and click Delete to
delete the selected item.
Wi-Fi Wi-Fi Advanced
This section allows you to configure and manage advanced settings of
your wireless network. In most cases, however, the default wireless
settings will be sufficient.
Disable Network Name Broadcast: By disabling SSID broadcasting, the
DWR-923 will not broadcast its Network ID (SSID) to announce itself to
wireless stations and other access points.
Group Re-Key Interval: Specify the timeout interval after which group
keys are generated (only used if profile is configured with WPA or
WPA2 security).
Beacon Interval: Enter the time in milliseconds between beacon
transmissions. The default interval is 100 milliseconds.
Fragmentation Threshold: This is the maximum length of the frame, in
bytes, beyond which packets must be broken up (fragmented) into two
or more frames. Collisions occur more often for long frames because
while sending them they occupy the channel for a longer time. The
default value is 2346, which effectively disables fragmentation.
RTS Threshold: The Request to Send (RTS) threshold is the packet size
in bytes above which the DWR-923 is required to check the
transmitting frames to determine if RTS/Clear to Send (CTS) handshake
is required with the receiving client. Using a small value causes RTS
packets to be sent more often, consuming more of the available
bandwidth, therefore reducing the apparent throughput of the
network packets. The default value is 2346, which effectively disables
Transmit Power: Enter a value in dBm for the default transmit power
Channel: The wireless channel that the DWR-923 will broadcast on.
This specifies the radio frequency used to transmit wireless frames.
Select a channel from the list or choose Auto to let the system
determine the best channel to use based on environmental noise levels
for all available channels.
Wireless Mode: Select the 802.11 modulation technique. The
DWR-923 supports 802.11 b/g/n Wi-Fi modes.
Bandwidth: When you choose “ng” as your wireless mode, you may
choose a Wi-Fi bandwidth for this product from HT20, HT40- and
HT40+. Higher bandwidth indicates a higher throughput of your
wireless network. However, there will also be a greater chance of signal
interference from other network devices.
Click Apply to apply the changes. Or click Reset to undo your
3.3.4 LAN
LAN Device List
This page lists the information of client network devices that are
connected via the DWR-923’s LAN ports.
Host Name: Name of the client device.
IP Address: IP address that the client device is using.
MAC Address: MAC address of the client device.
LAN LAN Settings
This page allows you to configure the local network settings of the
DWR-923. In most cases the default settings should be sufficient. In
this section you can configure the TCP/IP details for the LAN.
Note: The settings on this page will affect all devices that are
connected to the router’s LAN including wireless LAN clients. All
connected LAN hosts must be in the same subnet and use the new LAN
address to access the User Configuration Interface.
IP Address: Enter the local network IP address for the DWR-923. The
default IP address is
Subnet Mask: The subnet mask along with the previously configured IP
address defines the network. The default value for subnet mask is
Host Name: The default host name is DWR-923.
Click Apply to apply the changes. Or click Reset to undo your
LAN DHCP  Basic
By default, the DWR-923 will function as a DHCP (Dynamic Host
Configuration Protocol) server. As such it will provide TCP/IP
configuration to client computers connected to the local network.
IPv4 Address Distribution:
Specify the number of devices/computers in your network: Enter the
number of local network computers (including those connecting over
Wi-Fi) and the DHCP server will calculate the number of leases
required for the network.
Start IP distribution from: Define the starting range of the IP address.
The DHCP server will iterate the DHCP IP addresses to be given out by
taking into account the starting IP address range and the configured
number of devices in your network.
Click Apply to apply the changes. Or click Reset to undo your
LAN DHCP  DHCP Reservation
IP addresses can be reserved so that a particular IP address is always
allocated to a particular computer in the local network. This allows
devices such as printers and VoIP phones to be assigned the same IP
address from the DHCP server when they come online, which is critical
for hostname mapping and port mapping rules. This is achieved by
binding the unique hardware ID of the device, called the MAC address,
to an IP address in the DHCP server reserved IP address list.
List of Reserved IP Address:
MAC Address: The MAC address of the computer or local network
IP Address: The reserved IP address to associate with the above MAC
Click Add to add a reserved IP, or select an item and click Edit to modify
or click Delete to delete the selected item.
3.3.5 Advanced
Advanced DNS&DynDNS
The Domain Name Server (DNS) page allows you to define the system
name and domain name of the DWR-923 for DNS resolution. You can
assign a domain name to a particular computer with the use of Domain
Name System (DNS) entries. DNS allows you to assign a readable
system name to the DWR-923. All connected local network computers
will appear in the list of hosts as belonging to the domain configured
on this page. Network hosts which are a part of a common domain can
view the list of other computers that are part of that domain.
Domain Name Server (DNS) Address:
System Name: Enter the system name for the DWR-923.
Domain Name: Enter the domain name to define the common domain
for computers connected to the DWR-923.
Description: Add a description about the system name.
Dynamic DNS (DDNS) is an Internet service that allows routers with
varying public IP addresses to be located using Internet domain names.
To use DDNS, you must setup an account with a DDNS provider such as
DynDNS.org and fill in the required account details including Domain
Name, Username and Password on this page.
Select the Dynamic DNS Service: Select the DNS service that you are
subscribed to.
Domain Name: Enter the domain name of the dynamic DNS account.
This is the DNS domain name which will be used. An example is
Username: Enter the username of the dynamic DNS account. This will
be provided by the dynamic DNS service provider.
Password: Enter the password for the dynamic DNS account.
Use wildcards: Check this option to use wildcards.
Update every 30 days: Selecting this configures the DWR-923 to update
the host information on DynDNS.com and keep the subscription active
after the 30 day trial period.
Click Apply to apply the changes. Or click Reset to undo your
Advanced Firewall
This section displays the firewall security settings of the DWR-923. The
security levels are grouped into a set of rules corresponding to
maximum, typical, and minimum security settings. Advanced users can
supplement these rules with custom parental controls or port mapping
rules as needed. Select from one of the three security modes to
protect the local network from Internet intrusion:
Security Mode Configuration:
Maximum Security: All incoming requests from the Internet are
blocked by default and the router allows limited Internet destined
traffic from leaving the local network. This mode is the strongest level
of security. All traffic from the Internet is blocked from reaching the
local network, except what is allowed via port mapping policies that
apply to the local network. A limited set of commonly used services are
permitted to be accessed from the local network such as web traffic
(HTTP / HTTPS) or file transfer (FTP).
Typical Security: All incoming requests from the Internet are still
blocked by default but the computers on the local network can access
the Internet without restrictions. This is the default and generally most
appropriate security setting for home networks. All traffic from the
Internet is blocked from reaching the local network, thus blocking
unwanted intrusion from the outside. At the same time local network
users are given unrestricted access to the Internet regardless of service
or application.
No Security: This setting opens the firewall for all traffic to and from
the Internet. This mode provides unrestricted access from the local
network to the Internet and vice-versa. It is not recommended to set
the DWR-923 in this mode without additional parental controls as it
makes the local network vulnerable to attack from the Internet.
Click Apply to apply the changes. Or click Reset to undo your
Advanced Firewall Access Control
A list of all configured filtering rules is displayed in this section. Filtering
rules for computers indicate whether a defined service is specifically
allowed or blocked for use by that computer.
This is a security mechanism to selectively block or allow certain types
of traffic in accordance with rules specified by network administrators.
You can use this page to manage the firewall rules that control traffic to
and from your network.
Access Control:
Application: The application on which the filtering rule is applied.
Computer Name: The name of the host on which the filtering rule is
Status: Displays if the traffic is allowed or blocked.
Click Add to add an access rule, or select an item and click Edit to
modify or click Delete to delete the selected item.
Advanced Firewall URL Blocking
URL Blocking lets you block websites containing specific keywords from
being accessed through this gateway. Displayed below is the list of
blocking rules:
Filter Name: Unique identifier for the content filtering rule.
Keywords: The keywords that are used to filter websites accessed by
local network users. The content filtering rule is based on these
Domains: The internet domain on which content filtering rules is
Please follow the steps below to setup:
Step 1: Click Add to add a blocking rule. The image below uses yahoo
to demonstrate: set limit_yahoo as the filter name and yahoo as the
Step 2: Go to “Rules for schedule” page  Check the box to Enable
Parental Control  Click Apply to enable the configurations for “List of
Parental Control Profiles”.
Step 3: Click Add to add profiles:
(1) Enter Profile Name.
(2) Select your Group membership (admin/guest).
(3) Check the box to Enable Content Filtering.
(4) Select a Filter Content.
(5) Click Apply.
Step 4: Open browser and link to http://www.yahoo.com.tw . The
webpage will ask you to login. Please login according to your Group
membership setting on step 2 (admin/guest).
Step 5: After logged in, link to http://www.yahoo.com.tw again. Since
yahoo is the keyword for blocked webpage therefore you will see the
denial message while accessing any content that include the keyword.
Advanced Firewall DoS Attacks
A denial-of-service attack (DoS attack) is an attempt to make a device
resource unavailable to its intended users.
SYN Flood: Enter the maximum number of SYN packets per second the
security appliance accepts before determining that a SYN Flood
Intrusion is occurring. This value can range between 1 and 10,000 SYN
packets per second. The default is 128 SYN packets per second.
Echo Storm: The security tool monitors the number of pings per
second to determine when to declare an echo storm intrusion event.
Echo storm intrusion events are not blacklisted. This value can range
between 1 and 10,000 ping packets per second. The default is 15 ping
packets per second.
ICMP Flood: The security tool monitors the number of ICMP packets
per second, not including ping packets, to determine when to declare
an ICMP flood intrusion event. ICMP flood events are not blacklisted.
This value can range between 1 and 10,000 ICMP packets per second.
The default is 100 ICMP packets per second.
Click Apply to apply the changes. Or click Reset to undo your
Advanced Firewall Rules for Schedule
This section allows you to determine what local network users can
access on the Internet, and when. Parental control profiles enable you
to restrict access to particular websites or block sites with specific
keywords that you do not want home network users to access. Parental
control configuration is accomplished in two steps. First content
filtering rules or schedules are defined and then a parental control
profile is created using a combination of content filtering rules and
Parental Control Settings: Check the box to enable parental control.
You will be able to prevent local network computers from accessing
undesirable content or connecting to the Internet during scheduled
access times.
List of Parental Control Profiles: This section displays the parental
control list you have set up.
Profile Name: A unique identifier for the parental control profile.
Description: This can be a short description of the purpose of the rule
to allow DWR-923 administrators to remember the use and intent of
this profile.
Group: The user group upon which the rule is applied.
Session Timeout: The elapsed time after which the user's session will
Inactivity: The elapsed time that the system has been inactive.
List of Schedules: Schedules are a very useful feature to allow security
files to be enabled or disabled based on the time of day or day of the
week. Configured schedules are available for selection in the firewall
rule configuration page. All schedules follow the configured system
time. When you create a parental control policy, you have the option to
specify a time of day and duration when the rule is active. The table
lists all the Available Schedules for this device and allows several
operations on the Schedules.
ID: The user identification name.
Name: Name of the schedule for identification and management
Description: Describes the status of the schedule profile.
Click Add to add a parental control schedule rule, or select an item and
click Edit to modify or click Delete to delete the selected item.
Advanced QoS Settings
Sessions Limit: Enter the upper limit of the number of sessions that
other devices may connect to the device. The number ranges from
Bandwidth Management: Bandwidth management controls the rate
and priority of the traffic on your Internet link, allowing you to
efficiently utilize Internet bandwidth.
Configuring bandwidth
management will allow you to control the rate and priority of traffic
going to the Internet, ensuring that high priority traffic, such as voice,
is assured of a certain quality of service, and also limiting low priority
You can manage the bandwidth on both Dedicated and Optional WAN
ports. For bandwidth management on the Optional port, the port has
to be configured as a WAN port.
Enable Bandwidth management: Check the box and click Apply to
enable adding, editing and deleting of bandwidth profiles. Add profiles
in the List of Bandwidth Profiles table first.
WAN Configuration: The WAN configuration table allows you to set the
values of the upstream and downstream bandwidth as specified by
your ISP.
Bandwidth Queue Configuration: Specify the bandwidth queue priority.
Packets that are tagged with different priority will be delivered using
different throughput what you specified here.
Bandwidth Profiles: The table lists the Bandwidth Profiles for this
device and allows several operations on the Bandwidth Profiles.
Name: The user-defined name for this bandwidth profile.
IP Address: The range of the IP address set in the profile.
Priority: Priority of the bandwidth profile.
Actions that can be carried out on bandwidth profiles are:
Checking the box in the first column will select all the bandwidth
profiles in the table.
Click Add to add a bandwidth profile, or click Edit to open the
Bandwidth Profiles Configuration page to edit the selected bandwidth
profile. Or click Delete to delete the selected item.
Advanced NAT
Network Address Translation (NAT) is a technique which allows several
computers on a LAN to share an Internet connection. The computers
on the LAN use a "private" IP address range while the WAN port on the
DWR-923 is configured with a single "public" IP address.
Along with connection sharing, NAT also hides internal IP addresses
from computers on the Internet.
NAT: Select NAT if your ISP has assigned you only one IP address. The
computers that connect through the DWR-923 will need to be assigned
IP addresses from a private subnet (e.g.
Bridge Mode: The DWR-923 in bridge mode can act as a bridge and
also filter/inspect packets. It has all the interfaces belonging to the
same LAN segment and you do not have to change other network
settings when you add a transparent device to the network. Select this
option to add your WAN interface to the LAN segment.
Click Apply to apply the changes. Or click Reset to undo your
Advanced NAT  Virtual DMZ
Virtual DMZ (De-Militarized Zone) allows you to specify a DMZ host IP to
redirect requests to a Virtual DMZ host in order to enhance the security of the
local area network.
Virtual DMZ (Enable/Disable): Enable or disable the Virtual DMZ
function. If this function is enabled, threats from external networks will
be directed to the Virtual DMZ instead of the network.
IP Address of host DMZ: Enter the IP address of host DMZ.
Click Apply to apply the changes. Or click Reset to undo your
Advanced NAT  Port Mapping
Port Mapping can be used to translate the common service port to a
custom port inside your local network such as web or FTP.
List of Port Mapping Services: Displays all the port mapping rules for
the DWR-923.
Service: The name of the service for which the port mapping rule has
been created.
IP Address: The IP address of the computer on the local network to
which the traffic will be forwarded.
Port Translation: The port number of the destination host for traffic
Click Add to add a port mapping rule, or select an item and click Edit to
modify or click Delete to delete the selected item.
Advanced NAT  UPnP Port Mapping
For devices that support Universal Plug and Play (UPnP), enabling the
UPnP Port Mapping function will allow automatic port forwarding that
helps your UPnP devices communicate with the Internet.
UPnP Settings: Check the box and click Apply to enable UPnP port
mapping function.
UPnP Portmap Table: UPnP devices that are applied with the UPnP
port mapping function will be listed in this chart.
Advanced NAT  Special Applications
While common services use known TCP/UDP ports, many custom or
uncommon applications require traffic to be sent through the firewall.
This section introduces the custom services of the DWR-923.
Service Name: Name of the service for identification and management
Protocol: The layer 4 protocol that the service uses: TCP, UDP.
Start Port: The start of the port range for the custom service.
End port: The end of the port range for the custom service.
Click Add to add a special application, or select an item and click Edit to
modify or click Delete to delete the selected item.
Advanced Static Routing
Static routing is a data communication concept describing one way of
determining packet path selection of routers in your networks. The
table lists all static routes that have been added manually and allows
several operations on the static routes.
Name: The name of the route for identification and management
Destination Network: The destination host or network to which the
route leads.
IP Subnet Mask: Subnet Mask for the destination.
Network: Displays the network to which the route belongs, and can be
either wired or wireless.
Gateway: The IP Address of the gateway through which the destination
host or network can be reached.
Click Add to add a static route, or select an item and click Edit to
modify or click Delete to delete the selected item.
Advanced USB USB Storage
Show information of the USB storage device connecting to this product,
which includes the directory it mounts, its capacity and the used
Advanced DLNA
Turning this function on allows use of this product as a media server.
DLNA compatible client devices will be able to read or play files that
are stored in the USB storage device connecting to this product.
Enable Media Server: Check this option to enable the media server
3.3.6 System
System Time Settings
Network Time Protocol (NTP) is a protocol that is used to synchronize
computer clock time in a network of computers. This page allows you
to set the date, time and NTP (Network Time Protocol) servers.
Accurate time across a network is important for logging and execution
of scheduled upgrades and scheduled policies.
Current Time: Displays the current time of the DWR-923.
Time Zone: Select the local time zone. This is required in order for the
firewall schedules to work.
Enable Daylight Saving: If supported by the NTP servers for your
region, you can check Automatically Adjust for Daylight Savings Time.
NTP Server1: The NTP server to sync. Default is 0.us.pool.ntp.org
NTP Server2: The second NTP server to sync in case the first one does
not respond. Default is 1.us.pool.ntp.org.
NTP Server3: The third NTP server to sync in case the first and second
does not respond. Default is 2.us.pool.ntp.org.
Configure date and time manually: Select this if you would like to set
time manually.
Click Apply to apply the changes. Or click Reset to undo your
System Users
This page lists the users that have been configured on the DWR-923 for
accessing shares, the Internet or even managing the device. The
default guest or administrator user has access to the DWR-923’s web
management. A newly configured user (along with the default guest /
admin) can be assigned to a group, upon which common parental
control and content sharing policies can be applied. Custom users are
not able to access the web management interface.
Name: Unique identifier for this user
Group Membership: Group to which the user belongs.
Description: Description of the user.
Click Add to add a user account, or select a user and click Edit to
modify or click Delete to delete the selected item.
System Reboot & Reset
Reboot: Select Reboot and click Apply, a countdown timer will appear
and count down the reboot period. After the device reboots, the Login
page will be displayed.
Revert to factory reset configuration: Select revert to factory reset
configuration and click Apply. The DWR-923 will restore all
configuration settings to the original factory default settings.
Note: Restoring factory default settings will erase all of your
existing settings.
System Firmware Upgrade
Firmware will be continually updated as more features are added and
known issues are resolved. This section helps you to upgrade your
firmware to the latest version available online.
Select to upgrade firmware for the DWR-923 system or the LTE module:
1. Click Browse to locate the firmware file from the directory on the
local host.
2. Click Router Upgrade/ 4G Upgrade to begin firmware upgrade.
System Remote Management
This feature can be used to manage the device remotely from the WAN
side. By default, Remote Management is disabled. To enable WAN
access to the Configuration Utility, check the box.
IMPORTANT: When Remote Management is enabled, the security
appliance is accessible to anyone who knows its IP address. Since a
malicious WAN user can reconfigure the DWR-923 and misuse it in
many ways, it is HIGHLY RECOMMENDED that you change the admin
and guest passwords before continuing.
Permission for Remote Management can be given to the following:
Enable Remote Management: Check the box to enable remote
Access Type: Select an access type. If you choose All IP Addresses the
DWR-923 will access all IPs automatically. If IP Address Range is
selected, you will have to specify the starting and ending IP addresses
from the following column. If Only this PC is selected, you will have to
specify your PC IP address.
IP Address: IP address of the PC given remote management
Enable Remote SNMP: Check the box to enable remote SNMP.
Click Apply to apply the changes. Or click Reset to undo your
Multiple IP Range Configuration
Start IP Address: Displays the starting IP address for the allowed range.
End IP Address: Displays the ending IP address for the allowed range.
Click Add to add an IP address, or select an item and click Edit to
modify or click Delete to delete the selected item.
System System Logs
System Logs: As the DWR-923 manages network traffic and
communication, it continuously generates logs for troubleshooting and
network analysis by the home network administrator. The logging
features for various sections can be enabled for desired features (such
as network, security, applications and administration) to analyze the
actions performed in these sections of the DWR-923.
1. Check Enable Logging box to enable log collection on the DWR-923.
2. Select a Log Category from All, Network, Security, Administration or
Applications to display the appropriate logs in the View Logs section.
3. Click Apply to apply the changes. Or click Reset to undo your
View Logs: The logs are displayed in this section. Click Refresh Log to
view the most up-to-date log information. Or click Clear Log to erase all
of the log information.
Download Tar Log Files: Select a tar log file and then click Download to
download the selected file to your computer.
Remote Logging: You can write and maintain the log data to a remote
computer using the remote logging function. Enable this function and
enter the IP address of this computer.
4. Appendix
4.1 Connected PC IP Address Configuration
Appropriate IP address settings are required to communicate with the
DWR-923. The following instructions use Windows XP to demonstrate
the IP setup steps.
1. In the Windows Start menu, click Control Panel.
2. Double-click Network Connections (if required, switch to Classic
View first).
3. Right-click Local Area Connection and then click Properties.
4. The Local Area Connection Properties window will appear:
5. From the “This connection uses the following items” list, select
Internet Protocol (TCP/IP) and then click Properties. The Internet
Protocol (TCP/IP) window will appear:
6. If you select “Obtain an IP address automatically,” click the OK
button to finish your configuration.
7. If you select “Use the following IP address,” ensure that your IP
address is from to The subnet mask
8. Click OK  OK to apply this IP address setting.