QNO FQR7203 User Manual Download Page 87

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Gigabit Network QoS Router

Example2: How to block LAN IP addresses from 192.168.1.200-192.168.1.230 to access the TCP 80

port ?

Action: Deny

Service: TCP 80

Source Interface: Range

Source IP address: range from 192.168.1.200 to 192.168.1.230

Destination address: Any

Summary of Contents for FQR7203

Page 1: ...English User s Manual 4 5WAN 8LAN Gigabit Network QoS Router Load Balance Bandwidth Management and Network Security...

Page 2: ...5 2 Change and Set Login Password and Time 20 VI Network Configuration 23 6 1 Network Connection 23 6 2 Multi WAN Setting 35 VII Intranet Configuration 53 7 1 Port Management 53 7 2 Port Status 55 7 3...

Page 3: ...12 2 System Statistic 115 12 3 Traffic Statistic 116 12 4 IP Port Statistic 119 XIII Log out 121 Appendix I User Interface and User Manual Chapter Cross Reference 122 Appendix II Troubleshooting 124 1...

Page 4: ...of intellectual property must also be copied and indicated Otherwise Qno regards it as tort and relevant duty will be prosecuted as well 2 Scope of Authority of Manual The user may install use display...

Page 5: ...corresponding information The guarantee and condition include tacit guarantee and condition about marketability suitability for special purposes ownership and non infringement The name of the compani...

Page 6: ...adband market In addition independent DMZ port can connect to the public server by public IP address It has a built in 8Gigabit backbone LAN port to appropriate for 10 100 1000Mbps Ethernet switch and...

Page 7: ...also DoS attack Complete Functions of Access Rules can allow manager to select the network service level to deny or allow access it can also limit or deny LAN users to use the network and to avoid th...

Page 8: ...is simplifies the management and maintenance making the user network settings be done at one time The main process is as below 1 Hardware installation 2 Login 3 Verify device specification and set up...

Page 9: ...n 5 Set LAN connection physical port and IP address settings Set mirror port and VLAN Allocate and manage LAN IP Provide mirror port port management and VLAN setting functions Support Static DHCP IP a...

Page 10: ...MAC Clone 9 Management and maintenance settings Syslog SNMP and configuration backup Monitor VPN Firewall working status and configuration backup Administrators can look up system log and monitor sys...

Page 11: ...on Ethernet is running at 100Mbps Amber LED off Ethernet is running at 10Mbps Connect Green Green LED on WAN is connected and gets the IP address 1000M Speed Green Green LED on Ethernet is running at...

Page 12: ...place the battery yourself otherwise irreparable damage to the product may be caused Installing GIGABIT Router on a Standard 19 Rack We suggest to either place VPN Firewall on a desk or install it in...

Page 13: ...rk QoS Router 11 In order for the device to run smoothly wherever users install it be sure not to obstruct the vent on each side of the device Keep at least 10cm space in front of both the vents for a...

Page 14: ...h an external router to connect to the Internet LAN Connection The LAN port can be connected to a Switching Hub or directly to a PC Users can use servers for monitoring or filtering through the port a...

Page 15: ...nter cmd to commend DOS and enter ipconfig for getting Default Gateway address as the graphic below 192 168 1 1 Make sure Default Gateway is also the default IP address of VPN Firewall Attention When...

Page 16: ...assword in the setting later Attention For security we strongly suggest that users must change password after login Please keep the password safe or you can not login to VPN Firewall Press Reset butto...

Page 17: ...or users reference 5 1 1 WAN Status IP Address Indicates the current IP configuration for WAN port Default Gateway Indicates current WAN gateway IP address from ISP DNS Server Indicates the current DN...

Page 18: ...uch as PPPoE or PPTP is selected Disconnect and Connect will appear DMZ IP Address Indicates the current DMZ IP address 5 1 2 Physical Port Status The status of all system ports including each connect...

Page 19: ...0Mbps duplex status Half Full auto negotiation Enabled or Disabled The tabble also shows statistics of Receive Transmit Packets Receive Transmit Packets Byte Count as well as Error Packets Count 5 1 3...

Page 20: ...or off The default configuration is On DoS Denial of Service Indicates if DoS attack prevention is activated The default configuration is On Block WAN Request Indicates that denying the connection fro...

Page 21: ...Gigabit Network QoS Router 19 Send Log to Future Indicates if Syslog Server is Enabled or Closed...

Page 22: ...hat you must change your password after first login Please keep the password safe or you might not login to VPN Firewall You can press Reset button for more than 10 sec VPN Firewall will return back t...

Page 23: ...es You can either select the embedded NTP Server synchronization function or set up a time reference Synchronize with external NTP server GIGABIT Router has embedded NTP server which will update the t...

Page 24: ...king any change This action will be effective before Apply to save the configuration Select the Local Time Manually Input the correct time date and year in the boxes After the changes are completed cl...

Page 25: ...formation from their ISP Please refer to the following descriptions for specific configurations 6 1 Network Connection 6 1 1 Host Name and Domain Name Device name and domain name can be input in the t...

Page 26: ...e Multiple Subnet Setting Click Add Edit to enter the configuration page as shown in the following figure Input the respective IP addresses and subnet masks This function enables users to input IP seg...

Page 27: ...o Point Tunneling Protocol or Transparent Bridge Config A modification in an advanced configuration Click Edit to enter the advanced configuration page Obtain an Automatic IP automatically This mode i...

Page 28: ...to input the IP numbers issued by an ISP into the relevant boxes WAN IP address Input the available static IP address issued by ISP Subnet Mask Input the subnet mask of the static IP address issued b...

Page 29: ...Demand This function enables the auto dialing function to be used in a PPPoE dial connection When the client port attempts to connect with the Internet the device will automatically make a dial conne...

Page 30: ...on Subnet Mask Input the subnet mask of the static IP address issued by ISP such as Issued eight static IP addresses 255 255 255 248 Issued 16 static IP addresses 255 255 255 240 Default Gateway Addre...

Page 31: ...ck Cancel to leave without making any changes Transparent Bridge If all Intranet IP addresses are applied as Internet IP addresses and users don t want to substitute private network IP addresses for a...

Page 32: ...set by ISP At least one IP group should be input The maximum acceptable is two IP groups Internal LAN IP Range Input the available IP range issued by ISP If ISP issued two discontinuous IP address ra...

Page 33: ...public IP address Subnet mask Enter the public IP address subnet mask WAN default gateway Enter the WAN default gateway which provided by your ISP DNS Servers Enter the DNS server IP address you must...

Page 34: ...act as bridges between the Internet and LANs For some Qno models the WAN5 and DMZ port can be configurable each other You can depend on the real environment to choose which the port is WAN5 or DMZ IP...

Page 35: ...he DMZ Port IP Address Subnet Mask Enter the DMZ Port Subnet Mask Range DMZ and WAN are within same Subnet Interface Select a WAN Port witch is the same subnet with DMZ IP Range Input the IP range loc...

Page 36: ...NATMode LAN IP Range Enter the usable static IP range that provide by ISP into the DMZ service IP range If you have other IP range you can setup the default gateway and IP range into group 2 After th...

Page 37: ...oS Router 35 6 2 Multi WAN Setting When you have multiple WAN gateways you can use Traffic Mangement and Protocol Binding function to fullfil WAN road balancing so that we can have highest network ban...

Page 38: ...automatically allocate connections based on session number to achieve network load balance IP Session Balance If By IP is selected the WAN bandwidth will automatically allocate connections based on IP...

Page 39: ...ect Load Balance mode and select session or IP for load balancing Un binding interfaces load balancing mode If you don t specified IP address TCP UDP port or destination IP addresses in WAN ports you...

Page 40: ...you have to do is to select the WAN or WAN group which is connected with Netcom the device will then automatically dispatch the traffic for Netcom through that WAN to connect with the Internet and di...

Page 41: ...ed and click the Import IP Range button the dialogue box for document importation will be displayed accordingly A policy document is an editable text document It may contain a destination IP users des...

Page 42: ...rategy can coexist However if a destination IP is assigned by both China Netcom strategy and self defined strategy China Netcom strategy will take priority In other words traffic to that destination I...

Page 43: ...ted an error message will be recorded in the System Log This line will not be removed therefore the some of the users on this line will not have normal connections This option is suitable under the co...

Page 44: ...ers have an optical fiber box or the IP issued by ISP is a public IP and the gateway is located at the port of the net caf rather than at the IP provider s port do not activate this option ISP Host Th...

Page 45: ...In Interface Configuration click Edit to enter the WAN port configuration Bandwidth Configuration When Auto Load Balance mode is selected the device will select sessions or IP and the WAN bandwidth wi...

Page 46: ...gned It is to be saved for the IP addresses and the application Service Ports that are not assigned to other WANs WAN2 WAN3 and WAN4 for external connections In other words the first WAN WAN1 cannot b...

Page 47: ...ions to destination IP address 210 11 1 1 are to be restricted to WAN1 the external static IP address 210 1 1 1 210 1 1 1 should be input If a range of destinations is to be assigned input the range s...

Page 48: ...e dialogue box will be closed Add or Remove Service Port If the Service Port users want to activate is not in the list users can add or remove service ports from Service Port Management to arrange the...

Page 49: ...Auto Load Mode will enable more flexible use of bandwidth Users can assign specific Intranet IP addresses to specific destination application service ports or assign specific destination IP addresses...

Page 50: ...figure below select HTTP TCP 80 80 from the pull down option list Service and then in the boxes for Source IP input 192 168 1 150 to 200 Retain the original numbers 0 0 0 0 in the boxes of Destination...

Page 51: ...the pull down option list Interface and then click Enable Finally click Add New and the rule will be added to the mode The device will transmit packets to Port 80 through WAN2 However with only the a...

Page 52: ...ction into full play Example 1 How do I set up the Assigned Routing Mode to keep all Intranet IP addresses from going through WAN2 when the destination is Port 80 and keep all other services from goin...

Page 53: ...e all Intranet IP addresses In the boxes for Destination IP input 211 1 1 1 211 254 254 254 Select WAN2 from the pull down option list Interface and then click Enable Finally click Add New and the rul...

Page 54: ...Gigabit Network QoS Router 52...

Page 55: ...DMZ port by choosing the number of ports speed priority duplex and enable disable the auto negotiation feature for connection setting of each port Mirror Port Users can configure LAN 1 as mirror port...

Page 56: ...ther the connection speed and duplex mode Therefore if Enabled Auto Neg selected the ports setup will be done without any manual setting by administrators VLAN This feature allows administrators to se...

Page 57: ...terface LAN WAN1 4 DMZ Link Status Up Down Port Activity Port Enabled Priority Setting High or Normal Speed Status 10Mbps or 100Mbps Duplex Status half duplex or full duplex Auto Neg Enabled Disabled...

Page 58: ...nd configuring IP addresses for each PC respectively When a computer is turned on it will acquire an IP address from the device automatically This function is to make management easier Dynamic IP Clie...

Page 59: ...he DNS from which an IP address has been leased to a PC port Input the IP address of this server directly DNS Server Required 1 Input the IP address of the DNS server DNS Server Required 2 Input the I...

Page 60: ...s is the current DHCP IP Dynamic IP Used The amount of dynamic IP leased by DHCP Static IP Used The amount of static IP assigned by DHCP IP Available The amount of IP still available in the DHCP serve...

Page 61: ...Gigabit Network QoS Router 59 Client Lease Time The lease time of the IP released by DHCP Delete Remove a record of an IP lease...

Page 62: ...ter 60 7 5 IP MAC Binding Administrators can apply IP MAC Binding function to make sure that users can not add extra PCs for Internet access or change private IP addresses There are two methods for se...

Page 63: ...the list This method only allows MAC addresses on the list to receive IP addresses from DHCP and have Internet access When this method is applied please fill out Static IP with 0 0 0 0 as the figure...

Page 64: ...d Add new binding Block MAC address on the list with wrong IP address This method only allows MAC addresses on the list to receive IP addresses from DHCP and have Internet access Block MAC address not...

Page 65: ...Gigabit Network QoS Router 63 Enabled Choose the item to be bound Apply Activate the configuration Select All Choose all items on the list for binding Refresh Refresh the list Close Close the list...

Page 66: ...ead of configuring each IP respectively which takes more time and is more prone to error IP Group Select a group to which the modification is to be made Add Group Click Add Group to crate a new IP gro...

Page 67: ...riority to specific applications or services and also to enable other users to share bandwidth as well as to ensure stable and reliable network transmission To maximize the bandwidth efficiency networ...

Page 68: ...Gigabit Network QoS Router 66 8 1 Bandwidth Management QoS...

Page 69: ...aranteed upstream bandwidth for each IP would be 1024Kbit 50 20Kbit Sec Thus 20Kbit Sec can be input for Mini Rate Downstream bandwidth can be calculated in the same way Attention The unit of calculat...

Page 70: ...or all services of each IP is to be controlled select All TCP UDP 1 65535 If only FTP uploads or downloads need to be controlled select FTP Port 21 21 Refer to the Default Service Port Number List IP...

Page 71: ...e game server of a caf to update data In this way game players inside the caf will not be affected Min Max Rate Kbit Sec The minimum bandwidth The rule is to guarantee minimum available bandwidth The...

Page 72: ...ricted such as BT e mule etc will be moved to the bottom of the list The rules for certain IP addresses would then be moved upward Delete selected items Remove the rules selected from the Service List...

Page 73: ...over the condition the dynamic intelligent QoS will auto start The default condition is 60 Upstream bandwidth threshold Setup the Upstream bandwidth threshold Downstream bandwidth threshold Setup the...

Page 74: ...ime ranges can setup in one day and the clock formula is 24H If you select All day in the first time range then others time range will blank and unable to setup The time ranges can t overlap We have s...

Page 75: ...t control you can use this function to fulfil the requirement WAN Select WAN ports Source IP Enter the exempted IP range or select the exempted IP group Do not control Direction Select do not control...

Page 76: ...Gigabit Network QoS Router 74 Delete Selected Range Delete selected list Apply Click Apply button to saving configuration Cancel Click Cancel button to reject modification...

Page 77: ...y Intranet PC is attacked by a virus like Worm Blaster and sends a huge number of session requests session control will restrict that as well Session Control and Scheduling Disabled Disable Session Co...

Page 78: ...nternet for five minutes New connections cannot be made until the delay time ends Scheduling If Always is selected the rule will be executed around the clock If From is selected the rule will be execu...

Page 79: ...ess Input the IP address range or IP group Enabled Activate the rule Add to list Add this rule to the list Delete seleted item Remove the rules selected from the Service List Apply Click Apply to save...

Page 80: ...etwork access rules and content filter will be turned off Firewall This feature allows users to turn on off the firewall SPI Stateful Packet Inspection This enables the packet automatic authentication...

Page 81: ...in and the modifiable default control port should be adjusted the default is set to 80 modifiable Multicast Pass Through There are many audio and visual streaming media on the network Broadcasting ma...

Page 82: ...hould be adjusted from high to low LAN Threshold When all packet values from internal attack or from single internal IP attack reach the maximum amount the default is 15000 packets Sec and 2000 packet...

Page 83: ...etwork so as to protect all internet access The following describes the internet access rules All traffic from the LAN to the WAN is allowed by default All traffic from the WAN to the LAN is denied by...

Page 84: ...of each network access rule The device will follow the rule priorities one by one so please make sure the priority for all the rules can suit the setting rules Edit Define the network access rule item...

Page 85: ...ess Service Management to add the new service From the pop up window enter a service name and communications protocol and port and then click the Add to list button to add the new service Log No Log T...

Page 86: ...roduced as below to This control rule has time limitation The setting method is in 24 hour format such as 08 00 18 00 8 a m to 6 p m Day Control Everyday means this period of time will be under contro...

Page 87: ...xample2 How to block LAN IP addresses from 192 168 1 200 192 168 1 230 to access the TCP 80 port Action Deny Service TCP 80 Source Interface Range Source IP address range from 192 168 1 200 to 192 168...

Page 88: ...supports two webpage restriction modes one is to block certain forbidden domains and the other is to give access to certain web pages Only one of these two modes can be selected Block Forbidden Domain...

Page 89: ...Name Enter the websites to be controlled such as www playboy com Add to list Click Add to list to create a new website to be controlled Delete selected item Click to select one or more controlled webs...

Page 90: ...List Add this new service item content to the list Delete selected item Delete the service item content from the list Apply Click Apply to save the modified parameters Cancel Click Cancel to cancel a...

Page 91: ...nabled Activate the function The default setting is Disabled Domain Name Input the allowed domain name etc www google com Add to list Add the rule to list Delete selected item Users can select one or...

Page 92: ...Filter Scheduling Select Always to apply the rule on a round the clock basis Select from and the operation will run according to the defined time For example if the control time runs from 8 a m to 6...

Page 93: ...Gigabit Network QoS Router 91 Day Control This control rule has time limitation The setting method is in 24 hour format such as 08 00 18 00 8 a m to 6 p m...

Page 94: ...mapping public IP address and private IP address 4 Setup dynamic DNS service 5 Setup MAC address in interfaces 10 1 DMZ Forwarding 10 1 1 DMZ Configuration When the NAT mode is activated sometimes use...

Page 95: ...tual IP addresses the Internet IP addresses with Port 80 the service port of WWW is Port 80 to access the internal server directly In the configuration page if a web server address such as 192 168 1 5...

Page 96: ...list Add to the active service content Service Port Management The services in the list mentioned above are frequently used services If the service users want to activate is not in the list we recomme...

Page 97: ...d to list Add the service to the service list Delete selected item To remove the selected services Apply Click the Apply button to save the modification Cancel Click the Cancel button to cancel the mo...

Page 98: ...dinarily just Static Routing will be used RIP is used when there is more than one router in a network and if an administrator doesn t want to assign a path list one by one to all of the routers RIP ca...

Page 99: ...ons Use Up Down button to select one of None RIPv1 RIPv2 Broadcast RIPv2 Multicast as the RX function for receiving dynamic RIP 10 2 2 Static Routing When there are more than one router and IP subnets...

Page 100: ...er count for the IP If there are two routers under the device users should input 2 for the router layer the default is 1 Max is 15 Interface This is to select WAN port or LAN port for network connecti...

Page 101: ...addresses For example if there are more than 2 web servers requiring public IP addresses administrators can map several public IP addresses directly to internal private IP addresses Example Users have...

Page 102: ...Please do not include IP addresses in use by WANs Add to List Add this configuration to the One to One NAT list Delete Seleted Item Remove a selected One to One NAT list Apply Click Apply to save the...

Page 103: ...or the actual IP of a cable modem will be changed from time to time To overcome this problem for users who want to build services such as a website it offers the function of dynamic web address transf...

Page 104: ...ns Username The name which is set up for DDNS Input a complete website address such as abc qnoddns org cn as a user name for QnoDDNS Password The password which is set up for DDNS Dynamic Domain Name...

Page 105: ...Gigabit Network QoS Router 103 Apply After the changes are completed click Apply to save the network configuration modification Cancel Click Cancel to leave without making any changes...

Page 106: ...network card physical address MAC address 00 xx xx xx xx xx here The device will adopt this MAC address when requesting IP address from ISP Select the WAN port to which the configuration is to be edi...

Page 107: ...apter 5 2 11 1 Diagnostic GIGABIT router provides a simple online network diagnostic tool to help users troubleshoot network related problems This tool includes DNS Name Lookup Domain Name Inquiry Tes...

Page 108: ...the status quo of the outbound session and allows the user to know the existence of computers online On this test screen please enter the host IP that users want to test such as 192 168 5 20 Press Go...

Page 109: ...grade page Please confirm all information about the software version in advance Select and browse the software file click Firmware Upgrade Right Now to complete the upgrade of the designated file Note...

Page 110: ...ings into the GIGABIT Router Before upgrade confirm all information about the software version Select and browse the backup parameter file config exp Select the file and click Import to import the fil...

Page 111: ...9 11 4 System Recover Users can restart the GIGABIT Router with System Recover button Restart s the figure below if clicking Restart Router button the dialog block will pop out confirming if users wou...

Page 112: ...t if the device will return to factory default We suggest you backup your router configuration before upgrade firmware after upgraded firmware you can reset router configuration to default for check t...

Page 113: ...on is selected the System Log feature will be enabled Host Name The device provides external system log servers with log collection feature System log is an industrial standard communications protocol...

Page 114: ...that they can access the resource in the source system Win Nuke Servers are attacked or trapped by the Trojan program Ping of Death The system fails because the sent data exceeds the maximum packet t...

Page 115: ...recorded in the system log The following is the description of the four buttons allowing online inquiry into the log View System Log This option allows users to view system log The message content can...

Page 116: ...stem packet log of those entering the firewall The log includes information about the external source IP addresses destination IP addresses and service ports It is illustrated as below Clear Log Now T...

Page 117: ...port location device name current WAN link status IP address MAC address subnet mask default gateway DNS number of received sent total packets number of received sent total Bytes Received and Sent Byt...

Page 118: ...12 3 Traffic Statistic Six messages will be displayed on the Traffic Statistic page to provide better traffic management and control By Inbound IP Address The figure displays the source IP address by...

Page 119: ...rce IP address bytes per second and percentage By Inbound Port The figure displays the network protocol type destination IP address bytes per second and percentage By Outbound Port The figure displays...

Page 120: ...address network protocol type source port destination IP address destination port bytes per second and percentage By Outbound Session The figure displays the source IP address network protocol type s...

Page 121: ...rather than Multi WANs Administrators may find out the destination IP for protocol binding to solve this login problem For example when certain port software is denied inquiring about the IP address...

Page 122: ...Gigabit Network QoS Router 120 Specific Port Status Enter the service port number in the field and IP that are currently used by this port will be displayed...

Page 123: ...121 XIII Log out On the top right corner of the web based UI there is a Logout button Click on it to log out of the web based UI To enter next time open the Web browser and enter the IP address user n...

Page 124: ...he same time Router overall interface is as below Category Sub category Chapter Home V Device Spec Verification Status Display and Login Password and Time Setting 5 1 Home Basic Setting VI Network Net...

Page 125: ...MAC Clone 10 5 MAC Clone System Tool XI System Tool V Device Spec Verification Status Display and Login Password and Time Setting Password 5 2 Change and Set Login Password and Time Diagnostic 12 1 D...

Page 126: ...II Troubleshooting 1 Block BT Download To block BT and prevent downloading by users go to the Firewall Content Filter and select Enable Website Block by Keywords followed by the input of torrent This...

Page 127: ...ently the internet transmission speed was brought down and the Session bulky increase result in the massive processing load of the device The following guides users to block this virus corresponding p...

Page 128: ...Gigabit Network QoS Router 126 Use the same method to add UDP UDP135 139 and TCP 445 445 Ports c Enhance the priority level of these three to the highest...

Page 129: ...e web based UI and enter Firewall Access Rule b Click Add New Rule under Access Rule page Select Deny in Action under the Service rule setting followed by the selection of All Traffic TCP UDP 1 65535...

Page 130: ...9 36 97 5 59 36 97 7 59 36 97 37 219 133 63 48 loginqqlivedx qq com 219 133 49 159 loginqqlivewt qq com 58 251 63 13 loginqqlivexy qq com 202 205 3 218 qqlive qq com 219 133 62 70 tv1 3t qq com 221 23...

Page 131: ...N what is actually transmitted is frame in which there is MAC address of the destination host device So called Address Analysis refers to the transferring process of the target IP address into the tar...

Page 132: ...N PC The former intercepts the gateway data and send ceaselessly a series of wrong MAC messages to the device which sends out wrong MAC address The PC thus cannot receive the messages The later is ARP...

Page 133: ...cheat by ARP 3 ARP Solution Now we understand ARP ARP cheat and attack as well as how to identify this type of attack What comes next is to find out effective prevention measures to stop the network f...

Page 134: ...1 1 0a 0f d4 9e fb 0b so as to finish the binding of pc01 as illustrated For other host devices within the network follow the same way to enter the IP and MAC address of the corresponding device to c...

Page 135: ...a two way binding of the IP address and MAC address from both of the PC and device ends in order to carry out the prevention work However this is more complicated because the search for the IP and ad...

Page 136: ...commended because the inquiry of IP MAC addresses of all hosts creates heavy workload Another method to bind IP and MAC is more recommended because of easy operation reducing workload and time efficie...

Page 137: ...ddress corresponding to the PC are displayed Enter the Name of the computer and click on Enabled with the display of the icon and push the option on the top right corner of the screen to confirm Now t...

Page 138: ...attacked by ARP This can better shelter the network from being attacked 2 Cyber caf administrators should check the LAN virus install anti virus software Ginshan Virus Reixin must update the virus cod...

Page 139: ...hich includes such management sharing as C and D Single device user can directly close Server service 7 Do not open QQ or the link messages sent by MSN online chatting tools in a causal manner Do not...

Page 140: ...dwidth forum refer to the examples of the FTP server or contact the technical department of Qno s dealers as well as the Qno s Mainland technical center Qno Official Website http www Qno com tw Dealer...

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