Astak R4020A User Manual
802.11n Wireless 2T2R Router
R4020A
Advanced User Manual
Version 0.1
Date: January 14, 2013
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Contents
Overview ........................................................................................................................ 3
About this Product ................................................................................................. 3
Key Features ........................................................................................................... 3
What’s in the Box? ......................................................................................................... 4
Package Contents ................................................................................................... 4
LED Indicators ......................................................................................................... 4
Panel ....................................................................................................................... 5
To Be Started .................................................................................................................. 6
System Requirements ............................................................................................ 6
Connecting the Router ........................................................................................... 6
Operation Mode ............................................................................................. 6
Power on the Router ...................................................................................... 8
Quick Setup Wizard ........................................................................................................ 9
Login to the Web Management Interface .............................................................. 9
Setup Wizard for Gateway Mode (Router Mode) ................................................ 10
Setup Wizard for Bridge Mode (AP Mode) .......................................................... 14
Wireless Settings .......................................................................................................... 18
Basic Settings ....................................................................................................... 18
Advanced Settings ................................................................................................ 22
Security ................................................................................................................ 24
Access Control ...................................................................................................... 38
Site Survey ............................................................................................................ 39
WPS ...................................................................................................................... 42
Schedule ............................................................................................................... 44
TCP/IP ........................................................................................................................... 45
LAN Interface ....................................................................................................... 45
WAN Interface ...................................................................................................... 49
Firewall ......................................................................................................................... 57
Port Filtering ........................................................................................................ 57
IP Filtering ............................................................................................................ 58
MAC Filtering ....................................................................................................... 59
Port Forwarding ................................................................................................... 60
URL Filtering ......................................................................................................... 61
DMZ ...................................................................................................................... 62
VLAN ..................................................................................................................... 63
QoS ............................................................................................................................... 64
Management ................................................................................................................ 66
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Status .................................................................................................................... 66
Statistics ............................................................................................................... 67
DDNS .................................................................................................................... 68
Time Zone Setting ................................................................................................ 69
Denial-of-Service .................................................................................................. 70
Log ........................................................................................................................ 71
Upgrade Firmware ............................................................................................... 72
Save/Reload Settings ............................................................................................ 73
Password .............................................................................................................. 74
Logout .......................................................................................................................... 75
Troubleshooting ........................................................................................................... 76
Specifications ............................................................................................................... 77
Glossary ........................................................................................................................ 78
Appendix A: TCP/IP Settings ......................................................................................... 80
2
Overview
About this Product
This is a wireless router with 2T2R MIMO technology providing an excellent network
solution for home, SOHO and hotspot users. It complies with standards IEEE 802.11n
with data rate up to 300 Mbps, and IEEE 802.11b/g with maximum data rate of 54
Mbps. It can also interoperate with all the 11/54 Mbps wireless (802.11b/g) products.
The router allows multiple users to share one broadband connection, as well as
secures your private network. With its built-in two ports switch and wireless AP, LAN
users can share files, printers, or playing network games.
To provide a secure wireless network, this router supports wireless data encryption
with 64/128-bit WEP, WPA and WPA2. Network Address Translation (NAT) Firewall is
also support to shield your communications and network from hackers and wireless
eavesdroppers.
Key Features
Provide two 10/100Mbps Ethernet ports (one WAN port & one LAN port)
Comply with IEEE 802.11n and IEEE802.11b/g wireless standards
2.4GHz frequency band and 2T2R
High speed transfer rate up to 300Mbps
Support auto-MDI/MDI-X, backpressure and flow control
Support IEEE802.1x port-based and MAC-based network access control
Support wireless security for WEP, WPA TKIP and WPA2 AES PSK and pair-wise
key authentication services
Support Static IP, DHCP Client, PPPoE, Firewall and NAT IP Sharing
Support MAC Clone function
Support Multiple APs (up to 4 AP SSIDs)
Support Wireless auto-channel selection
Support WMM and WMM-APSD function
Support WPS supported in AP and client mode
Support Statistics, VPN Pass-through, System Log
Support IEEE802.3az Energy Efficient Ethernet
Provide 1 x WPS/RESET button
Support Auto IP
Support WPS2.0
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What’s in the Box?
Package Contents
Your package contains the following items:
·One Mini Wireless Router
·One Ethernet Cable
·User Manual
Note:
Make sure that the package contains the above items. If any of the listed items are
damaged or missing, please contact with your distributor immediately.
Conventions
The router mentioned in this guide stands for IEEE 802.11n Wireless 2T2R Router
without any explanation.
LED Indicators
The front panel of this wireless router contains four status lights as below. You can
use the status lights to confirm various conditions.
Number LED Light Status Description
1 PWR
2 WPS
On-Blue Power on
Off Power off
On-Red The device is starting.
Blink-Red WPS is working improperly.
Off
Blink-Blue The wireless function is enabled.
The device has completed starting; Or WPS is
successfully connected.
3 WLAN
4 LAN
Flashing-Blue
Off The wireless function is disabled.
On-Blue A device is linked to the LAN port.
Flashing-Blue
Off No link is detected on the LAN port.
Data is being sent or received over wireless.
Data is being sent or received over the LAN port.
4
start Push Button
On-Blue A device is linked to the WAN port.
5
Panel
WAN
Flashing-Blue
Off No link is detected on the WAN port.
Data is being sent or received over the WAN port.
Number Name Description
6
7
8
9
USB Power
Jack
WAN Port This port connects to Internet.
LAN Port This port connects to a local computer.
WPS/Reset
Button
The device is powered by a MicroUSB connector.
Pressing this button once will
Configuration to setup WPS connection; pressing and
holding this button for more than 5 seconds will restore
the system to the factory settings.
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To Be Started
System Requirements
Each computer with an Ethernet adapter and TCP/IP protocol installed
Ethernet connection or Broadband Internet connection such as one DSL/cable
modem with an RJ45 connection
802.11n/b/g wireless adapters for wireless connection
A Web browser such as internet explorer 5.0 or higher
Connecting the Router
Operation Mode
In this router, there are two operation modes provided for you to select: Gateway
mode and Bridge mode. Before using the router, please choose an operation mode
first and then go on other configurations.
Gateway Mode
Gateway mode is known commonly as Router mode.
In this mode, the device is supposed to connect to Internet via ADSL/Cable Modem.
The connection type can be setup in WAN page by using PPPOE, DHCP client, PPTP
client, L2TP client or static IP.
The device can be accessed either via wired or wireless connections.
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Bridge Mode
Bridge Mode is known commonly as AP Mode.
In this mode, all Ethernet ports and wireless interface are bridged together. All the
WAN related function and firewall are not supported.
In Bridge mode, the device can be set as AP, AP Client or Repeater.
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Power on the Router
To start the device, you should power on it first.
The device is powered by a MicroUSB connector. Connect the MicroUSB plug of the
USB cable to the power jack of the device, and connect the USB2.0 plug to the USB
port of the PC.
After starting the device, connect the PC to the LAN port of the device with a
network cable. Confirm on the PC that you connect to a new local network.
Note: Don’t connect the Internet cable to the WAN port at this time.
8
Quick Setup Wizard
The Setup Wizard will help you getting online in several minutes by configuring the
basic functions of the wireless rou t er. You can use the Setup Wizard and manage the
router by a Web browser.
Login to the Web Management Interface
Open a web browser, type the default IP address of the router 192.168.100.1 in the
address field and press Enter.
You will see a login window after pressing E nt e r. Login it with “admin” for both User
name and Password.
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Setup Wizard for Gateway M o de (Router Mode)
Step 1:
The default operation mode is Router mode.
If this is the first time you enter the Web interface, you can click the
button directly in the home page.
If you want to change AP mode to Router mode, please select "Gateway" and apply
the change first in the "Operation Mode" page.
Step 2:
You can check the "Enable NTP client update" box to synchronize the time with an
NTP server, and select your time zone. After the setting, click the button.
Step 3:
In this step you can change the IP address (default 192.168.100.1) and subnet mask
(default 255.255.255.0) of the router. This IP is used for LAN connection to the router.
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Click the button after confirming them.
Step 4:
Select one type of WAN access. There are 5 types provided: Static IP, DHCP Client,
PPPoE, PPTP, and L2TP.
If you are using a DSL/cable modem to access the Internet, please select PPPoE type,
and the user name and password are provided by your Internet Service Provider
(ISP).
Input the information and click the button.
Step 5:
Configure the basic settings of the wireless network. You can change the default SSID
to your own name so that you can easily find it out (Strongly recommended). Click
the button.
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Step 6:
Use an encryption key to protect your wireless network (Strongly recommended).
Click the button to save the previous settings.
Step 7:
The system will save the wireless settings and reboot automatically. Please wait 30
seconds.
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Step 8:
Plug the Internet cable into the WAN port of the device. The device will access the
Internet. You can also wirelessly connect to the network by the SSID you named.
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Setup Wizard for Bridg e M o de (AP Mode)
Step 1:
The default operation mode is Router mode. To change it to Bridge mode, please
click the "Operation Mode" on the left menu, then select "Bridge" and click the
button.
Step 2:
The system will save the change and reboot automatically. Please wait 30 seconds.
Step 3:
After rebooting, the home page will turn to AP mode. Click the button.
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Step 4:
In this step you can change the IP address (default 192.168.100.1) and subnet mask
(default 255.255.255.0) of the router. This IP is used for LAN connection to the router.
Click the button after confirming them.
Step 5:
Configure the basic settings of the wireless network. You can change the default SSID
to your own name so that you can easily find it out (Strongly recommended). Click
the button.
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Step 6:
Use an encryption key to protect your wireless network (Strongly recommended).
Click the button to save the previous settings.
Step 7:
The system will save the wireless settings and reboot automatically. Please wait 30
seconds.
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Step 8:
Disconnect the wired connection between the PC and the device, and plug the
Internet cable into either one port of the device.
The device will access the Internet, then you can connect to the wireless network by
the SSID you named.
The method for setting the router as an AP client or repeater can be seen in Wireless
Settings > Site Survey.
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Wireless Settings
Basic Settings
You can configure the parameters for wireless LAN in this page.
Item Description
Disable Wireless
Network
Check the box to disable the wireless network.
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Network Band
Wireless Mode
Multiple AP
Network Type
SSID
There are 6 types of network band provided: 2.4GHz (B), 2.4 GHz (G),
2.4 GHz (N), 2.4GHz (B+G), 2.4 GHz (G+N) and 2.4 GHz (B+G+N).
You can select one type according to your wireless clients.
2.4 GHz (B+G+N) is strongly recommended.
There are 2 modes of wireless connection provided in AP mode: AP
and Client. Select one mode as you need.
Note: This function is not supported in Gateway mode.
This function provides 3 more access points for isolating the clients.
Click the
button you will see a page which shows the
wireless settings for Multiple APs. (See the details below)
Note: This function is not supported in
Infrastructure network.
There are 2 types provided in AP Client mode: Infrastructure and Ad
hoc. Select one type as you need.
Note: This function is only supported in AP Client mode.
Service Set Identifier (SSID) is used to identify one WLAN from the
others. The default SSID is "MiniRouter".
You can set an easily recognizable name according to your habit.
Channel Width
Control Sideband
Channel Number
Country
Broadcast SSID
There provides 20MHz and 40MHz to select as your channel width.
40MHz is only supported in 802.11n.
Note: This function is not supported in Infrastructure network.
The drop-down list is optional for “Upper” or “Lower” when you
select a specific number in Channel Number below.
This function is only applicable at 40MHz channel width.
Note: This function is not supported in Infrastructure network.
Channel Number can be selected to a specific number or retained
auto as default.
Channel Number will be different in different countries.
Country Lower Upper
USA (FCC), Canada (IC)
Europe (ETSI), Japan (MKK)
～
9 5～11
1
～
9 5～13
1
Spain 10 11
France 10 13
Note: This function is not supported in AP Client mode.
There contains USA (FCC), Canada (IC), Europe (ETSI), Spain, France,
and Japan (MKK) for your selection.
When this function is enabled, every wireless client within range can
see the SSID of this wireless router.
When this function is disabled, the SSID will be hidden and must be
added manually by the client.
WMM
When this function is enabled, video/audio data will have a higher
priority than the common data over wireless communications.
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Date Rate
There are various wireless data rate provided for 802.11b/g/n:
802.11b: 1, 2, 5.5, 11Mbps;
802.11g: 6, 9, 12, 18, 24, 36, 48, 54Mbps;
802.11n: MCS 0-15, up to 300Mbps.
Please select the data rate you need or retain it auto as default.
Associated Client
Enable Mac Clone
(Single Ethernet
Client)
Enable Universal
Repeater Mode
(Acting as AP and
client
simultaneously)
SSID of Extended
Interface
Click the
"Active Wireless Client Table" will pop up. You can see the status of
active wireless clients that are connected to the access point in the
table. (See the details below)
Note: This function is not supported in AP Client mode.
If your ISP requires you to register a MAC address, you can check this
function to clone the PC’s MAC address to the router to get online.
Note: This function is only supported in AP Client mode.
If you want to use this router as a repeater, please check this
function and set a SSID for the extended interface in below.
Note: This function is not supported in Gateway mode.
This SSID is used for the extended interface when this router works
as a repeater.
Note: This function is not supported in Gateway mode.
button, and then a window named
After setting the parameters, please click the button to save the
configurations, or click the button to reset the configurations before you
changed them.
A. Multiple APs
To use Multiple APs, check the “Enable” box of AP1～3 and then you can configure
the parameters.
Item Description
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Access
There are 2 types provided to access the multiple APs: “LAN+WAN”
and “WAN”. If you select “WAN”, LAN connection to the AP will be
disabled.
button in this column then you will see a pop-up
Active Client List
Click the
window named "Active Wireless Client Table" and the status of
active wireless clients that are connected to the AP listed in the
window.
After setting the parameters, please click the button to save the
configurations, or click the button to reset the configurations before you
changed them.
Click the button to refresh the clients’ information, or click the
button to close this pop up window.
B. Associated Client
Click the button to refresh the clients’ information, or click the
button to close this pop up window.
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This value determines the maximum size whether the packets will
If you experienced a high packet error rate, you may slightly
(RTS) Threshold determines the
the router, you may set it lower within the value range of 0 to
are the packets sent by the router to synchronize a
The time interval of the beacons can be set in
Advanced Settings
You can configure the advanced parameters for wireless LAN in this page.
Item Description
be fragmented.
Fragment Threshold
RTS Threshold
Beacon Interval
increase your fragmentation threshold within the value range of
256 to 2346.
The default value is 2346.
The value of Request to Send
maximum size whet her RTS/CTS access method will be deployed.
If there are any interferential long-distance clients connecting to
2347.
The default value is 2347.
The beacons
wireless network.
the range of 20 to 1024ms.
The default value is 100.
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The preamble type defines the length of CRC blocks in the frames
You may select “Short
Access Point Protocol (IAPP) is used to solve the problem of
Preamble Type
IAPP
Protection
Aggregation
Short GI
WLAN Partition
STBC
over the wireless communications.
Preamble” when there is a large network-flow.
The default is “Long Preamble”.
Interswitching the access points by the wireless clients.
The default is “Enabled”.
Select “Enabled” to use the wireless protection mechanism.
The default is “Disabled”.
This function is used to reduce the blocking in a large data transfer
by aggregating multiple packets to one.
The default is “Enabled”.
This function is used to increase the data capacity by reducing the
Guard Interval (GI) time.
The default is “Enabled”.
This function is used to prevent associated wireless clients from
communicating with each other.
The default is “Disabled”.
Space-time block codes (STBC) can improve system capacity and
spectral efficiency.
The default is “Disabled”.
Select “enabled” to use a mixed channel width of 20MHz and
20/40MHz Coexist
RF Output Power
40MHz.
The default is “Disabled”.
Radio Frequency (RF) Output Power is used to control the signal
strength of the wireless network. It can be decreased to 70%, 50%,
35% or 15%.
The default value is 100%.
*It’s recommended to keep the default values unless you know exactly the effect will
be brought to this router by changing the parameters.
After setting the parameters, please click the button to save the
configurations, or click the button to reset the configurations before you
changed them.
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the RADIUS server used for
Security
The Security function protects your wireless network from invasion. We provide WEP
and WPA encryptions to secure your wireless network.
If you select “Disable” to close the Security function, any client can access the router
without password and any data will be transmitted without encryption. We strongly
recommend do not do that.
Before setting the encryption, please check the SSID (See the setting in Wireless >
Basic Settings) in the “Select SSID” drop-down list if you set multiple APs.
The Web interfaces will display differently in each working mode.
Router Mode & AP Mode
A. Disable Encryption
Item Description
Select SSID Select the SSID you want to set an encryption for.
Encryption Select “Disable”.
802.1x Authentication Check the box to set the 802.1x authentication.
RADIUS Server IP
Address
RADIUS Server Port
RADIUS Server
Password
Enter the IP address of
authentication.
The default UDP port for RADIUS server is 1812. If your RADIUS
server uses a different port, please set the actual port number.
Enter the password of the RADIUS server.
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used for
B. WEP Encryption
>> 802.1x Authentication
Item Description
Select SSID Select the SSID you want to set an encryption for.
Encryption Select “WEP”.
802.1x Authentication Check the box to set the 802.1x authentication.
Authentication This can’t be selected in 802.1x authentication.
Key Length Select “64-bit” or “128-bit” as the length of your password.
RADIUS Server IP
Address
RADIUS Server Port
RADIUS Server
Password
Enter the IP address of the RADIUS server that
authentication.
The default UDP port for RADIUS server is 1812. If your RADIUS
server uses a different port, please set the actual port number.
Enter the password of the RADIUS server.
>> Authentication
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