Getnet Router GR-524WA User Manual

							 53 change its authentication type automatically to fulfill 
client’s requirement. 
  
Fragmentation 
Threshold Fragment Threshold specifies the maximum size of 
packet during the fragmentation of data to be transmitted. 
If you set this value too low, it will result in bad 
performance. Enter a value from 256 to 2346. 
  
RTS Threshold  This value should remain at its default setting of 2347. 
Should you encounter inconsistent data flow, only minor 
modifications are recommended. If a network packet is 
smaller than the preset “RTS threshold” size, the 
RTS/CTS mechanism will not be enabled. The wireless 
router sends Request to Send (RTS) frames to a 
particular receiving station and negotiates the sending of 
a data frame. After receiving an RTS, the wireless station 
responds with a Clear to Send (CTS) frame to 
acknowledge the right to begin transmission. 
  
Beacon Interval  The interval of time that this wireless router broadcast a 
beacon. Beacon is used to synchronize the wireless 
network. The range for the beacon period is between 20 
and 1024 with a default value of 100 (milliseconds).  
  
Data Rate  The rate of data transmission should be set depending 
on the speed of your wireless network. You should select 
from a range of transmission speeds, or you can select 
Auto to have the wireless router automatically use the 
fastest possible data rate and enable the Auto-Fallback 
feature. Auto-Fallback will negotiate the best possible 
connection speed between the router and a wireless 
client. The default setting is “Auto”. 
  
Preamble Type  The Preamble Type defines the length of the CRC 
(Cyclic Redundancy Check) block for communication 
between the router and wireless stations. Make sure to 
select the appropriate preamble type. Note that high 
network traffic areas should use the “Short Preamble”.  
						

							 54 CRC is a common technique for detecting data 
transmission errors. 
  
Broadcast SSID  If this option is enabled, the router will automatically 
transmit the network name (SSID) into open air at regular 
interval. This feature is intended to allow clients to 
dynamically discover the router. If this option is disabled, 
the router will hide its SSID. When this is done, the 
clients cannot directly discover the router  and MUST be 
configure with the SSID for accessing to the router. It is 
used to protect your network from being accessed easily.
  
Relay Blocking  When you enable this function, wireless clients will not be 
able to directly access other wireless clients. 
  
Protection  This is also called CTS Protection. It is recommended to 
enable the protection mechanism. This mechanism can 
decrease the rate of data collision between 802.11b and 
802.11g/802.11n wireless stations. When the protection 
mode is enabled, the throughput of the AP will be a little 
lower due to many of frame traffic should be transmitted.
  
Aggregation  This function is used to join multiple data packets for 
transmission as a single unit to increase network 
efficiency. 
  
Short GI  The 802.11n draft specifies two guard intervals: 400ns 
(short) and 800ns (long).  Support of the 400ns GI is 
optional for transmit and receive.  Enable this function 
will increase network efficiency. 
When you finish, click ‘Apply Changes’. You’ll see the following message 
displayed on web browser: 
 
 
  
						

							 55 Press ‘Continue’ to save the settings made and back to web management 
interface; press ‘Apply’ to save the settings made and restart the router so the 
settings will take effect after it reboots. 
 
5.2.4.3. Security 
 
This router provides complete wireless LAN security functions, include WEP, 
IEEE 802.1x, IEEE 802.1x with WEP, WPA with pre-shared key and WPA 
with RADIUS. With these security functions, you can prevent your wireless 
LAN from illegal access. Please make sure your wireless stations use the 
same security function. 
 
 
 
 
Parameter Description 
Encryption  You can choose “None” to disable the encryption or 
select “WEP”, “WPA(TKIP)”, “WPA2(AES)” or “WPA2 
Mixed” mode for security. When “WEP” is enabled, 
please click “Set WEP Key” button to choose the default 
key and set the four sets of WEP keys. 
WEP –WEP is less level of security than WPA. WEP 
supports 64-bit and 128-bit key lengths to encrypt the 
wireless data. 
  
						

							 56 WPA(TKIP) – WPA uses Temporal Key Integrity Protocol 
(TKIP) for data encryption. TKIP utilized a stronger 
encryption method and incorporates Message Integrity 
Code (MIC) to provide protection against hackers. 
 
 WPA2(AES) – WPA2, also known as 802.11i, uses 
Advanced Encryption Standard (AES) for data 
encryption. AES utilized a symmetric 128-bit block data 
encryption. 
 
WPA Mixed – The router supports WPA (TKIP) and 
WPA2 (AES) for data encryption. The actual selection of 
the encryption methods will depend on the clients. 
 
 
Use 802.1x 
Authentication IEEE 802.1x is an authentication protocol. Every user 
must use a valid account to login to this wireless router 
before accessing the wireless LAN. The authentication is 
processed by a RADIUS server. Check this box to 
authenticates user by IEEE 802.1x. 
  
WEP-64Bits  WEP is less level of security than WPA. WEP supports 
64-bit and 128-bit key lengths to encrypt the wireless 
data. The longer key length will provide higher security. 
When “WEP-64Bits” is selected, you have to enter 
exactly 5 ASCII characters (“a-z” and “0-9”) or 10 
hexadecimal digits (0-9, a-f) for each Key (1-4). 
  
WEP-128Bits  When “WEP-128Bits” is selected, you have to enter 
exactly 13 ASCII characters (“a-z” and “0-9”) or 26 
hexadecimal digits (0-9, a-f) for each Key (1-4). 
  
WPA Authentication 
Mode There are two types of authentication mode for WPA. 
Enterprise (RADIUS) – It uses an external RADIUS 
server to perform user authentication. To use RADIUS, 
enter the IP address of the RADIUS server, the RADIUS 
port (default is 1812) and the shared secret from the 
RADIUS server. Please refer to “Authentication RADIUS 
Server” setting below for RADIUS setting.  
						

							 57  
Personal (Pre-Shared Key) – Pre-Shared Key 
authentication is based on a shared secret that is known 
only by the parties involved. To use WPA Pre-Shared 
Key, select key format and enter a password in the “Pre-
Shared Key Format” and “Pre-Shared Key” setting 
respectively.  
  
Pre-Shared Key 
Format You may select to select Passphrase (alphanumeric 
format) or Hexadecimal Digits (in the “A-F”, “a-f” and “0-
9” range) to be the Pre-shared Key. For example: 
Passphrase: ”iamguest” 
Hexadecimal Digits: “12345abcde” 
  
Pre-Shared Key  Please enter 8-63 characters as the “Pre-Shared Key”.
  
  
Authentication 
RADIUS Server Enter the port (default is 1812), the IP address and the 
password of external RADIUS server are specified here.
When you finish, click ‘Apply Changes’. You’ll see the following message 
displayed on web browser: 
 
 
 
Press ‘Continue’ to save the settings made and back to web management 
interface; press ‘Apply’ to save the settings made and restart the router so the 
settings will take effect after it reboots. 
 
 
5.2.4.4. Access  Control 
 
This wireless router provides MAC Address Control, which prevents the 
unauthorized MAC Addresses from accessing your wireless network. 
  
						

							 58
 
 
 
Parameter Description 
Wireless Access 
Control Mode This router can prevent the wireless clients from 
accessing the wireless network by checking the MAC 
Address of the clients. If you enable this function, please 
set the MAC Address of the wireless clients that you 
want to filter. 
Disable – Disable this function. 
 
 Allow Listed – Only allow the wireless clients with the 
MAC Address you have specified can access to the 
router. 
 
Deny Listed – The wireless clients with the MAC 
Address you have specified will be denied accessing to 
the router. 
 
MAC Address  Enter the MAC Address of the wireless clients for the 
filtering control. 
  
Current Access Control If you want to remove some MAC address from the  
						

							 59 List  Current Access Control List , select the MAC addresses 
you want to remove in the list and then click Delete 
Selected. If you want remove all MAC addresses from 
the table, just click Delete All button. Click Reset will 
clear your current selections. 
When you finish, click ‘Apply Changes’. You’ll see the following message 
displayed on web browser: 
 
 
 
Press ‘Continue’ to save the settings made and back to web management 
interface; press ‘Apply’ to save the settings made and restart the router so the 
settings will take effect after it reboots. 
 
 
5.2.4.5. WPS 
 
Although home Wi-Fi networks have become more and more popular, users 
still have trouble with the initial set up of network. This obstacle forces users 
to use the open security and increases the risk of eavesdropping. Therefore, 
The Wi-Fi Protected Setup (WPS) is designed to ease set up of security-
enabled Wi-Fi networks and subsequently network management. 
The largest difference between WPS-enabled devices and legacy devices is 
that users do not need the knowledge about SSID, channel and security 
settings, but they could still surf in a security-enabled Wi-Fi network. 
This device supports Push Button method and PIN method for WPS. The 
following sub-paragraphs will describe the function of each item. The 
webpage is as below. 
  
						

							 60
 
 
Parameter Description 
Disable WPS  Check to disable the Wi-Fi protected Setup. 
  
WPS Status  When AP’s settings are factory default (out of box), it is 
set to open security and un-configured state. “WPS 
Status” will display it as “UnConfigured”. If it already 
shows “Configured”, some registrars such as Vista WCN 
will not configure AP. Users will need to go to the 
“Backup/Restore” page and click “Reset” to reload 
factory default settings. 
  
Self-PIN Number  “Self-PIN Number” is AP’s PIN. Whenever users want to 
change AP’s PIN, they could click “Regenerate PIN” and 
then click “ Apply Changes”. Moreover, if users want to 
make their own PIN, they could enter four-digit PIN 
without checksum and then click “ Apply Changes”. 
However, this would not be recommended since the 
registrar side needs to be supported with four-digit PIN. 
  
Regenerate PIN  Click to regenerate the Self-PIN Number. 
  
Push Button 
Configuration Clicking this button will invoke the PBC method of WPS. 
It is only used when AP acts as a registrar. 
   
						

							 61 Start PBC  Click to start the Push Button method of WPS. 
  
Reset  It restores the original values. 
  
Client PIN Number  It is only used when users want their station to join AP’s 
network. The length of PIN is limited to four or eight 
numeric digits. If users enter eight-digit PIN with 
checksum error, there will be a warning message 
popping up. If users insist on this PIN, AP will take it. 
When you finish, click ‘Apply Changes’. You’ll see the following message 
displayed on web browser: 
 
 
 
Press ‘Continue’ to save the settings made and back to web management 
interface; press ‘Apply’ to save the settings made and restart the router so the 
settings will take effect after it reboots. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
						

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5.2.5. QoS 
 
The router supports IP QoS feature that can provide different priority to 
different users or data flows.