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access point, helps control traffic flow. The range is 0-2347 bytes. The default value is 2347, 
which means that RTS is disabled. 

               

RTS/CTS

  (Request  to  Send  /  Clear  to  send)  are  the  mechanism  used  by  the 

802.11 wireless networking protocols to reduce frame collisions introduced by the 
hidden  terminal  problem.  RTS/CTS packet  size  threshold  is  0-2347  bytes.  If  the 
packet size the node wants to transmit is larger than the threshold, the RTS/CTS 
handshake gets triggered. If the packet size is equal to or less than threshold the 
data frame gets sent immediately. 

                System  uses  Request  to  Send/Clear  to  send  frames  for  the  handshake  that 

provide collision reduction for an access point  with hidden stations. The stations 
are sending a RTS frame first while data is sent only after a handshake with an AP 
is  completed.  Stations  respond  with  the  CTS  frame  to  the  RTS,  which  provide 
clear  media  for  the  requesting  station  to  send  the  data.  CTS  collision  control 
management has a time interval defined during which all the other stations hold off 
the transmission and wait until the requesting station will finish transmission. 

Beacon  Interval: 

By  default,  it  is  set  to  100ms.  Higher  Beacon  interval  will  improve  the 

device’s  wireless  performance  and  is  also  power-saving  for  client  side.  If  this  value  set 
lower than 100ms, it will speed up the wireless client connection.   

Preamble  Type:

  this  option  is  to  define  the  length  of  the  sync  field  in  an  802.11  packet. 

Most  modern  wireless  network  uses  shot  preamble  with  56  bit  sync  filed  instead  of  long 
preamble with 128 bit sync filed. However, some original 11b wireless network devices only 
support long preamble.   

IAPP

Inter-Access Point Protocol is designed for the enforcement of unique association 

throughout an ESS (Extended Service Set) and for secure exchange of station’s security 
context between current access point (AP) and new AP during handoff period. It is enabled 
by default.   

Protection: 

it is disabled by default.   

Aggregation: 

A part of the 802.11n standard. It allows sending multiple frames per single 

access to the medium by combining frames together into one larger frame. It creates the 
larger frame  by combining smaller frames with the same physical source and destination 
end points and traffic class (i.e. QoS) into one large frame with a common MAC header. It is 
enabled by default. 

Frames

—determine the number of frames combined on the new larger frame. 

Bytes

—determine the size (in Bytes) of the larger frame.   

Short  GI: 

short  Guide  Interval.  It  is  to  assure  the  safety  of  propagation  delays  and 

reflections for the sensitive digital data.   

WLAN Partition: 

divides the WLAN to several parts.   

20/40MHz Coexist: 

enable this function will make the device select the channel with better 

performance automatically. It is enabled by default.   

RF  Output  Power: 

you  can  select  the  output  power  of  the  wireless  device.  The  default 

Summary of Contents for NG-192

Page 1: ...1 ...

Page 2: ... 3 1 Operation Mode 12 4 3 1 1 Gateway 13 4 3 1 2 Bridge 13 4 3 1 3 Wireless ISP 13 4 3 2 Time Zone Settings 13 4 3 3 LAN Interface 14 4 3 4 WAN Interface 14 4 3 4 1 Static IP 15 4 3 4 2 DHCP Client 15 4 3 4 3 PPPoE 16 4 3 4 4 PPTP L2TP 16 4 3 5 Basic Settings 16 4 3 6 Security Settings 18 4 3 6 1 WEP 19 4 3 6 2 WPA 19 4 3 6 3 WPA2 19 5 ADVANCED SETTINGS 21 5 1 System Status 21 5 2 Operation Mode ...

Page 3: ...ter 35 5 5 2 MAC Filtering 36 5 5 3 URL Filtering 36 5 5 4 Port Forwarding 36 5 5 5 DMZ 37 5 5 6 Connection Limit 38 5 6 Management 38 5 6 1 QoS 38 5 6 2 Traffic Statistics 39 5 6 3 DDNS 40 5 6 4 Time Zone Settings 41 5 6 5 Denial of Service 41 5 6 6 System Log 42 5 6 7 Upgrade Firmware 43 5 6 8 Save Reload Settings 43 5 6 9 Password 44 ...

Page 4: ... affecting the Router s performance by improper operation 1 1 Navigation of the User s Guide Product Overview Describes the Router its features and appearance Hardware Installation Describes the packaging the hardware installation and how to set the computer Connecting to Internet Tells how you can connect your computer to Internet successfully using the Router Advanced Settings Lists all technica...

Page 5: ...iew of the above it is really a high performance and cost effective solution for home and small offices 2 2 Features Complies with IEEE 802 11n and IEEE 802 11g b standards for 2 4GHz Wireless LAN Supports PPPoE Dynamic IP PPTP L2TP and static IP broadband functions Supports UPnP DDNS VPN Pass Through and DMZ Host Supports 64 128 bit WEP WPA WPA2 WPA PSK WPA2 PSK TKIP AES encryption Built in firew...

Page 6: ...ered on WLAN This indicator lights blue when there are wireless devices connected and transmitting data to WLAN Router WAN When the WAN port is connected successfully the indicator lights blue During transmitting or receiving data through the WAN port the indicator blinks blue 1 2 3 4 LAN When one of the LAN ports has a successful connection the corresponding indicator lights blue During transmitt...

Page 7: ...e SYS LED becomes quick flash from slow flash And then release the button and wait the router to reboot to its factory default settings WPS If you have client devices you can press this button to quickly establish a router and client devices and automatically configure wireless security for your wireless network WAN This port is where you will connect the DSL cable Modem or Ethernet 1 2 3 4 LAN Th...

Page 8: ... WAN port 4 Connect the other end of the UTP LAN cable to ADSL or Modem port 5 Plug the Power Adapter into the Router and then into an outlet 6 Turn on your computer 7 Check and confirm that the Power LED and LAN LED on the router are ON 3 3 Check the Installation The control LEDs of the WLAN Router are clearly visible and the status of the network link can be seen instantly 1 With the power sourc...

Page 9: ...n an IP address automatically 1 Set up the TCP IP Protocol in Obtain an IP address automatically mode on your PC 2 Power off the Router and PC Then turn on the Router and restart the PC The built in DHCP server will assign IP address for the PC Now you can run the Ping command in the command prompt to verify the network connection between your PC and the Router Open a command prompt and type in pi...

Page 10: ... 4 1 Accessing Web page Connect to the Router by typing 192 168 0 1 in the address field of Web Browser Then press Enter key It will show up the following page that requires you to enter valid User Name and Password Enter admin for User Name and Password both in lower case letters Then click OK button or press Enter key Now you will get into the web interface of the device The Main screen will app...

Page 11: ...password required to log into your router User Name enter the User Name you login New Password new password is used for administrator authentication Confirm Password new password should be re entered to verify its accuracy Note password length is 8 characters maximum characters after the 8th position will be truncated Also once you change the login password it will be required every time you log i...

Page 12: ...eady to run in 6 easy steps by clicking on the Setup Wizard on the left navigation menu Then the following screen will appear Please click next to continue 4 3 1 Operation Mode This parameter specifies the operating network modes for the Router This router provides three modes Gateway Bridge and Wireless ISP You could refer to the following description to choose the right one ...

Page 13: ...t any intelligent routing For simple applications this provides an efficient and fully transparent network solution WLAN wireless and LAN Ethernet interfaces belongs to the same network segment that has the same IP address space WLAN and LAN interfaces form the virtual bridge interface while acting as the bridge ports 4 3 1 3 Wireless ISP It means Wireless Internet Service Provider If you need to ...

Page 14: ... including WLAN interface that is connected to the internal network This IP will be used for the routing of the internal network it will be the Gateway IP for all the devices connected on the internal network Subnet Mask this is used to define the device IP classification for the chosen IP address range 255 255 255 0 is a typical netmask value for Class C networks which support IP address range fr...

Page 15: ...s the Internet This can be a DSL modem Cable modem or a WISP gateway router The router will direct all the packets to the gateway if the destination host is not within the local network DNS Domain Name System Every Internet host must have a unique IP address also they may have a human friendly easy to remember name such as www yahoo com The DNS server converts the user friendly name into its equiv...

Page 16: ...hare a common connection If you use ADSL virtual dial up to connect Internet please choose this option User Name a specific valid ADSL user name provided by your ISP Password the corresponding valid password provided by your ISP 4 3 4 4 PPTP L2TP PPTP means Point to Point Tunneling Protocol L2TP means Layer 2 Tunneling Protocol Both these are VPN connections If you choose one of them please type i...

Page 17: ... you choose this mode the Network Type can be changed But the Channel Number can t be selected WDS Wireless Distribution System means connecting multiple wireless networks to one It will use two or more wireless bandwidth Router AP connecting with each other to expand wireless signal to longer distance This mode is suitable for medium size networks like school and enterprise network AP WDS WDS all...

Page 18: ...band This function is to control the sideband of the radio channel Upper By default it is Upper and the Channel Number is 11 Lower If you choose Lower the Channel Number will change to Auto automatically and you can t change the Control Sideband at the same time The selectable Channel Number now will range from 1 to 9 Only when you choose other Channel Number you will activate the Control Sideband...

Page 19: ...Key Format If you choose 64 bit there will be two Key Formats selectable ASCII 5 characters and Hex 10 characters If 128 bit the Key Formats should comply with ASCII 13 characters or Hex 26 characters Key Setting Please refer to Key Length to set this parameter 4 3 6 2 WPA Wi Fi Protected Access WPA is the most dominating security mechanism in industry It is separated into two categories WPA perso...

Page 20: ...re Shared Key either 8 63 ASCII characters such as 012345678 or 64 Hexadecimal digits leading by 0x such as 0x321253abcde After all the above settings please click Finished button then page with below messages will pop up Now you can surf Internet and enjoy the best wireless experience brought by this router ...

Page 21: ...LAN WAN and Wireless configuration Also you could get the current running firmware version or firmware related information from this presentation System Uptime show how long the system has run Firmware Version display the current firmware version of the router Build Time the time when the firmware built Wireless Configuration Network Type the network mode you ve selected Band the current band the ...

Page 22: ...ress show the MAC address of the LAN interface WAN Configuration Attain IP Protocol display the way to get IP Address IP Address show the IP address of the WAN interface Subnet Mask display the subnet mask of the WAN interface Default Gateway display the assigned IP address of the default gateway MAC Address display the MAC address of the WAN interface 5 2 Operation Mode We have discussed this on ...

Page 23: ...e configured in this section Also some more advanced settings can be setup here 5 3 1 Wireless Status This page displays the current wireless status of the router 5 3 2 Basic Settings On this page you could configure the parameters for Wireless LAN clients that may connect to your Access Point ...

Page 24: ...mode is just suitable for home and small offices Client If you choose this mode the Network Type can be changed But the Channel Number can t be selected WDS Wireless Distribution System means connecting multiple wireless networks to one It will use two or more wireless bandwidth Router AP connecting with each other to expand wireless signal to longer distance This mode is suitable for medium size ...

Page 25: ... spectrum with the width of 40MHz selected by default Control Sideband this function is to control the sideband of the radio channel Upper By default it is Upper and the Channel Number is 11 Lower If you choose Lower the Channel Number will change to Auto automatically and you can t change the Control Sideband at the same time The selectable Channel Number now will range from 1 to 9 Only when you ...

Page 26: ...n t change this value It depends on the mode you choose on Basic Settings SSID enter the SSID of extended interface Site Survey utility will search for wireless networks in range on all the supported channels while device is operating in Access Point 5 3 4 Security Settings This page enables you to set wireless security method that control how the subscriber station associates to a wireless device...

Page 27: ...nticating and authorizing dial up and tunneled network users 5 3 5 Advanced Settings Fragment Threshold specifies the maximum size for a packet before data is fragmented into multiple packets The range is 256 2346 bytes Setting the Fragment Threshold too low may result in poor network performance The use of fragment can increase the reliability of frame transmissions Because of sending smaller fra...

Page 28: ...he wireless client connection Preamble Type this option is to define the length of the sync field in an 802 11 packet Most modern wireless network uses shot preamble with 56 bit sync filed instead of long preamble with 128 bit sync filed However some original 11b wireless network devices only support long preamble IAPP Inter Access Point Protocol is designed for the enforcement of unique associati...

Page 29: ... List after you enter the MAC address and click Apply button this list will display all related information You can also delete some or all of them by clicking buttons 5 3 8 WDS Settings WDS means Wireless Distribution System It is a protocol for connecting two access points wirelessly Usually it can be used for the following application 1 Provide bridge traffic between two LANs though the air 2 E...

Page 30: ...te with others Set Security click this button you can set security rules for WDS The encryption we have discussed before You could refer to Security Settings Show Statistics this page shows you detailed transmission receiving packets See below 5 3 9 WPS Settings WPS Wi Fi Protected Setup provides easy procedure to make network connection between wireless station and wireless access point with the ...

Page 31: ...r please input the PIN code specified in wireless client you wish to connect and click Start PIN button The WPS LED on the router will blink fast when WPS is in progress It will return to normal condition after two minutes You need to setup WPS within two minutes 5 4 Network This item contains settings for LAN interface WAN interface and WAN Advanced Only if you set these parameters correct you ca...

Page 32: ...is device works as a client and you can t change the default settings on this page DHCP Client Range the range of IP addresses that will be assigned to each computer connected with the router DHCP Lease Time the IP addresses given out by the DHCP server will only be valid for the duration specified by the lease time Increasing the time ensure client operation without interrupt but could introduce ...

Page 33: ... is turned on the router will communicate with other network devices by sending and receiving Bridge Protocol Data Units BPDU STP should be turned off selected by default when this router is the only bridge on the LAN or when there are no loops in the topology as there is no sense for the bridge to participate in the Spanning Tree Protocol in this case 5 4 2 WAN Interface This page is used to conf...

Page 34: ...ced Enable UPnP the UPnP Universal Plug and play protocol is supported to bring to network connected devices the ease of installation and configuration which is already available for directly connected PC peripherals with the existing Windows Plug and Play system You can enable this function so that the router doesn t need to work out which port need to be opened Enable IGMP Proxy IGMP is the abbr...

Page 35: ...ut specific packets that trigger the router to build an unwanted outgoing connection 5 5 1 Rule Filter You can choose to enable or disable this function according to your needs If you enable Rule filter please provide the below information IP Address enter the IP address that you want to filter Port Range enter the Port range that you want to filter Protocol specify the protocol which this filter ...

Page 36: ...will list the detailed information about the MAC addresses that will be filtered 5 5 3 URL Filtering This page is used to deny LAN users from accessing the internet Block those URLs which contain keywords listed You can choose to enable or disable this function according to your needs If you enable URL filtering please provide the below information URL Address enter the URLs that you don t allow t...

Page 37: ...rmation about the ports that will be forwarded 5 5 5 DMZ DMZ means Demilitarized Zone It can be enabled and used as a place where services can be placed such as Web Servers Proxy Servers and E mail Servers such that these services can still serve the local network and are at the same time isolated from it for additional security DMZ is commonly used with the NAT functionality as an alternative for...

Page 38: ...he way of configuration Status Administrator Password Configuration Backup Syslog Time setup Reboot System Firmware upgrade 5 6 1 QoS QoS means Quality of Service Deploying QoS management to guarantee that all applications receive the service levels required and sufficient bandwidth to meet performance expectations is indeed one important aspect of modern enterprise network Since numerous TCP base...

Page 39: ...dress if you choose MAC please enter the MAC address or using Scan Mac Address button Mode this option is allow you to set guaranteed minimum bandwidth or restricted maximum bandwidth Uplink bandwidth type in the uplink bandwidth Downlink bandwidth type in the downlink bandwidth Comment describe the reason Just few words are saved there usually 5 6 2 Traffic Statistics This page shows the packet c...

Page 40: ...he Internet It is particularly helpful if you host a web server FTP server or other server behind the router Before you user the Dynamic DNS feature you have to apply for free DDNS service to the DDNS service providers The router provides up to three accounts from three different DDNS service providers This router supports two service providers DynDNS and TZO You could choose to enable or disable ...

Page 41: ...the vulnerability attacks The flooding type attacks will attempt to exhaust all your system s resource while the vulnerability attacks will try to paralyze the system by offending the vulnerabilities of the protocol or operation system The DoS Prevention function enables this router to inspect every incoming packet based on the attack signature database Any malicious packet that might duplicate it...

Page 42: ...od UDP IP Spoof Whole System Flood ICMP IP TearDrop Per Source IP Flood SYN PingofDeath Per Source IP Flood FIN TCP Scan Per Source IP Flood UDP TCP SynWithData Per Source IP Flood ICMP UDP Bomb TCP UDP PortScan UDP EchoChargen Sensitivity you can select Low or High sensitivity You can click Select ALL or Clear ALL to select prevention type 5 6 6 System Log This page can be used to set remote log ...

Page 43: ...ld be sent 5 6 7 Upgrade Firmware This page allows you to upgrade the Access Point firmware to new version Please note DO NOT power off the device during the upload because it may crash the system Firmware Version shows the current firmware version Select File select the firmware version you want to upgrade on your computer Click Upload to upgrade the firmware version 5 6 8 Save Reload Settings Th...

Page 44: ...ld click Choose File button to choose the right file then click Upload button Reset Settings to Default this Reset button is provided to allow you to restore the router settings to the default factory settings Reboot Device click Reboot to reboot this device 5 6 9 Password This page allows you to change the password to login web interface of this router Detailed settings please refer to Changing p...

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