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                       NTU Optical Network Terminals      41 
–  Set WPS AP mode—sets WPS mode of the access point. 
 
Wi-Fi routers supporting the WPS technology have a security vulnerability. This vulnerability allows 
attackers  to  retrieve  passwords  for  WPA  and  WPA2  encryption  protocols.  The  technology  is 
vulnerable as it allows to brute-force the 8-digit network key (PIN). 
Access point manual configuration: 
–  Select SSID—selects a name of a wireless network from the list; 
–  Network Authentication—selects a network authentication mode from the drop-down list: 
–  Open—wireless network security features are disabled (in this mode, only WEP key can be used); 
–  Shared—this mode enables user authentication by their SSID or WEP key; 
–  802.1x—enables 802.1x  standard (enables user  authentication with  a  RADIUS server,  WEP key  is 
used for data encryption); 
  RADIUS Server IP Address; 
  RADIUS Port—port number of the RADIUS server The default port is 1812; 
  RADIUS key—a secret key for access to the RADIUS server. 
–  WPA2—enables  WPA2  (this  mode  uses  WPA2  protocol,  requires  the  utilization  of  a  RADIUS 
authentication server); 
  WPA  Group  Rekey  Interval  –  the  period of  time  (in  seconds)  between automatic 
changes  of WPA  encryption keys  used  to  strengthen  wireless  network  security  If 
you don't need to change encryption keys, enter null value into the field; 
  RADIUS Port—port number of the RADIUS server The default port is 1812; 
  RADIUS key—a secret key for access to the RADIUS server; 
  WPA/WAPI  Encryption—selects  a  WPA/WAPI  data  encryption  method:  TKIP+AES, 
AES: 
–  TKIP—the  encryption  protocol  used  for  WPA  It  implements  a  more 
efficient mechanism of key change management in comparison with WEP; 
–  AES—128-bit  block  encryption  algorithm  with  128/192/256-bit  key, 
generally used for WPA2).  
–  WPA2-PSK—enable WPA2-PSK (this mode uses WPA2-PSK protocol, doesn't require the utilization 
of a RADIUS authentication server); 
  WPA/WAPI  Password—a  secret  phrase.  Sets  a  password;  a  string  of  8-63  ASCII 
characters. To view a secret phrase, click ‘Click here to display’ link, and password 
will be shown in a pop-up window. 
 
Default network key corresponds to device serial number. Serial number 
is printed on a sticker, which is located on device housing.  
When  changing  a  password,  you  have  to  specify  a  10-character 
combination. Password should contain numbers and Latin characters in 
upper and lower case. 
 
  WPA  Group  Rekey  Interval—the  period  of  time  (in  seconds)  between  automatic 
changes  of WPA  encryption keys  used  to  strengthen  wireless  network  security  If 
you don't need to change encryption keys, enter null value into the field. 
  WPA/WAPI  Encryption—selects  a  WPA/WAPI  data  encryption  method:  TKIP+AES, 
AES: