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Cerberus ADSL2+ Wi-Fi (P 6331-5)

Application / Web Access Control

The Web Access Control page allows you to access the router via the web from a remote
location like your home or office.

Enable

– Select to enable access to router from WAN.

Choose a connection

– Select WAN connection used for WAN Access.

Remote Host IP

– IP address of host which will be allowed to access router from WAN.

Remote Netmask

– Changing Netmask will allow more then one IP address to access router

from WAN.

Redirect Port

– Port needed to access router from WAN.

Application / SSH Access Control

SSH Access control allows you to access the router remotely via SSH from the WAN side.

Enable

– Select to enable SSH access to router from WAN.

Choose a connection

– Select WAN connection used for SSH Access.

Remote Host IP

– IP address of host which will be allowed to access router from WAN.

Remote Netmask

– Changing Netmask will allow more then one IP address to access router

from WAN.

Содержание Cerberus ADSL2+ Lite

Страница 1: ...2007 06 05 Installation and User s Manual PENTAGRAM Cerberus ADSL2 Wi Fi P 6331 5 The latest versions of manual drivers and applications are available on www pentagram eu ...

Страница 2: ...OTE Any information and technical data are subject to change without prior notification and or indication in this manual 2007 PENTAGRAM All rights reserved copying and reproduction is strictly forbidden ...

Страница 3: ... 9 CONFIGURE TCP IP 9 CONFIGURE ROUTER VIA WEB BROWSER 14 LOGIN 14 NAVIGATION 15 SETUP TAB 17 BASIC TAB 20 ADVANCED TAB 24 WIRELESS TAB 56 SECURITY TAB 63 STATUS TAB 66 HELP TAB 72 TROUBLESHOOTING 73 USING LEDS TO DIAGNOSE PROBLEMS 73 PROBLEMS WITH THE WEB INTERFACE 73 PROBLEMS WITH THE LOGIN USERNAME AND PASSWORD 74 PROBLEMS WITH LAN INTERFACE 74 PROBLEMS WITH WAN INTERFACE 74 PROBLEMS WITH THE I...

Страница 4: ......

Страница 5: ...ted such as web browser ICQ FTP Telnet E mail News Net2phone Ping NetMeeting IP phone and others Universal Plug and Play UPnP and UPnP NAT Traversal This protocol is used to enable simple and robust connectivity among stand alone devices and PCs from many different vendors and it makes setting up a network simple and affordable UPnP architecture leverages TCP IP and the Web to enable proximity net...

Страница 6: ...ility for remote users to configure and manage this product Firmware Upgradeable You can upgrade the router with the latest firmware through its web based GUI High Speed Internet Access downstream rates of up to 24Mbps and upstream rates of up to 1Mbps Cerberus ADSL2 Wi Fi is compliant with the following standards ANSI T1 413 issue 2 ITU T G 992 1 G dmt ITU T G 992 2 G lite ITU T G 992 3 ADSL2 G d...

Страница 7: ...ith the package Using a different voltage rating power adaptor may damage the router Front Panel LED Action Description POWER Off No power is supplied to the device Steady light Connected to an AC power supply ETHERNET Off No Ethernet connection Steady light Connected to an Ethernet port Blinking Light Transmitting Receiving data WIRELESS Off Access point is disabled Steady light Access point is e...

Страница 8: ...tings Before changing configuration familiarize yourself with these default settings IP Address 192 168 1 1 Subnet Mask 255 255 255 0 SSID yournetworkname DHCP Server Enabled DHCP Server IP Address Pool 253 IP addresses from 192 168 1 2 IP Address Lease Time 3600 seconds 1 hour User Name admin Password admin It is recommended to set username and password as soon as possible If you ever forget the ...

Страница 9: ...operly installed and configured and both router and PC must be in the same subnet Configure TCP IP This part will help you to configure your computer to communicate with Cerberus ADSL2 Wi Fi router properly Computer must be either equipped with network adapter connected directly to ADSL2 Wi Fi router or wireless network adapter compatible with Wi Fi 802 11b g standard Wireless network adapter must...

Страница 10: ... either click Continue Administrator user or select Administrator user and enter valid password Standard user 1 Click Start Control Panel 2 Click View network status and tasks 3 Click View status for appropriate connection 4 On General tab Click the Properties button 5 On General tab select Internet Protocol Version 4 TCP IPv4 and click Properties ...

Страница 11: ...2 Wi Fi P 6331 5 11 6 On General tab select Obtain an IP address automatically and Obtain DNS server address automatically 7 Click OK to save settings and close Internet Protocol Version 4 TCP IPv4 Properties window ...

Страница 12: ...icon and then Network Connections icon XP Default view 2 Double click the Local Area Connection icon 3 On General tab Click the Properties button 4 On General tab select Internet Protocol TCP IP and click Properties 5 On General tab select Obtain an IP address automatically and DNS server address automatically 6 Click OK to save settings and close Internet Protocol TCP IP Properties window ...

Страница 13: ...n IP Address tab select Obtain an IP address automatically 4 On DNS Configuration tab select Disable DNS 5 Click OK to save settings and close TCP IP Properties window To make sure that network adapter properly obtained an IP address from router s DHCP server click Start Run and type cmd Win 2000 XP or command Win 95 98 ME In command line type ipconfig all and check that value of the IP Address is...

Страница 14: ... Wi Fi router can be configured via web browser which is usually integrated with operating system Router offers clear and simple interface Login 1 Launch the Web browser 2 In address bar enter the default IP address http 192 168 1 1 3 Enter username and password default admin admin ...

Страница 15: ...s when the router is restarted Cancel Click to revert to the last saved configuration Commands Save Settings Click to permanently apply configuration changes Restart Access Point Restarts the wireless connection Restart Router Restarts the router Tabs The web interface includes the following tabs Setup Basic Advanced Wireless Security Status Help ...

Страница 16: ...f charging heavily depends on the number of simultaneous VCs VPI and VCI Be sure to use the Virtual Path Identifier VPI and Virtual Channel Identifier VCI numbers assigned to you The valid range for the VPI is 0 to 255 The valid range for the VCI is 32 to 65535 0 to 31 is reserved for local management of ATM traffic PPPoA Point to Point Protocol over ATM Adaptation Layer 5 AAL5 PPPoA provides acce...

Страница 17: ...e Internet Login Account Setting Enter User ID Password VPI Virtual Path Identifier VCI Virtual Channel Identifier and select your Protocol Encapsulation from the dropdown list Note that you must enter the user name exactly as your ISP assigned it If the assigned name is in the form of user domain where domain identifies a service name enter it exactly as given Click Previous to return to the prev...

Страница 18: ... network SSID will be hidden Click Previous to return to the previous screen or Next to continue Wireless LAN Security Select Enable Wireless Security checkbox strongly recommended from Cipher dropdown list choose key length 64 bits or 128 bits and either Generate or enter your own Encryption Key This will enable WEP authentication you can change WEP Key or select different authentication type at ...

Страница 19: ...irmed Password fields and enter Idle Timeout Use entered User Name and Password when accessing router s Web Interface Click Previous to return to the previous screen or Next to continue Summary If information on this page is correct you can save or print this page Click Previous to return to the previous screen or Finish to save settings and restart router ...

Страница 20: ... most basic information and configuration you need to configure router Home On this page you will find all information regarding connection router and local wireless network If Internet connection is Down click Connect and router will try to establish connection ...

Страница 21: ...ing above parameters LAN configuration IP Address The default IP address of the router as shown is 192 168 1 1 Netmask The default subnet mask of your router is 255 255 255 0 This subnet allows the router to support 254 users If you want to support a larger number of users you can change the subnet mask Default Gateway The default gateway is the routing device used to forward all traffic that is n...

Страница 22: ... in units of seconds The default value is 3600 seconds 1 hour The maximum value is 999999 seconds About 278 hours Enable DHCP Relay In addition to the DHCP server feature the router supports the DHCP relay function When the router is configured as DHCP server it assigns the IP addresses to the LAN clients When the gateway is configured as DHCP relay it is responsible for forwarding the requests an...

Страница 23: ...s to ping Packet size and Number of echo request and click Test The ping results are displayed in the page If the ping test was successful it means that the TCP IP protocol is up and running If the Ping test failed you should restart the router Full Modem Test Select your Connection and Test Type to perform then click Test ...

Страница 24: ... provides advanced configuration settings for existing connections At least one WAN connection must be configured before implementing advanced WAN configuration features At least one LAN group must be defined before implementing advanced LAN configuration features ...

Страница 25: ...Cerberus ADSL2 Wi Fi P 6331 5 25 WAN New Connection This page appearance is dependent on selected Type of connection Saved connections will be available from the bottom of WAN menu ...

Страница 26: ...all be set for nrtVBR PCR Peak Cell Rate Peak Cell Rate PCR is the maximum rate at which the sender can send cells This parameter may be lower but not higher than the maximum line speed 1 ATM cell is 53 bytes 424 bits so a maximum speed of 832 Kbps gives a maximum PCR of 1962 cells sec This rate is not guaranteed because it is dependent on the line speed SCR Sustained Cell Rate Sustained Cell Rate...

Страница 27: ...ged or Routed DHCP Settings Encapsulation IP Address Mask Gateway Parameters obtained from DHCP Server Default Gateway Select this option if you want to use default gateway for this connection Use buttons to Renew or Release parameters obtained from DHCP Server Bridge Settings Encapsulation Select your encapsulation type Select LAN Select LAN Group from which packets will be bridged to WAN port CL...

Страница 28: ...ion scan LAN LAN Configuration Interfaces List of available unassigned interfaces LAN Group 1 5 Each LAN Group can be configured as entire different subnet and you can freely assign routers network interfaces to any group To add interface to LAN group select this interface and click Add for desired group If you wish to remove interface from group select it and click Remove If group contains at lea...

Страница 29: ... IP address This field enables you to change the IP address of the router IP Address The default IP address of the router as shown is 192 168 1 1 Netmask The default subnet mask of your router is 255 255 255 0 This subnet allows the router to support 254 users If you want to support a larger number of users you can change the subnet mask Default Gateway The default gateway is the routing device us...

Страница 30: ...elay Off When the DHCP server and relay functions are turned off the network administrator must carefully configure the IP address Subnet Mask and DNS settings of every host on your network Do not assign the same IP address to more than one host Also your router must reside on the same subnet as all the other hosts LAN LAN Clients LAN Clients allows you to view and add computers in a LAN group Eac...

Страница 31: ...he presence of multiple WAN connections select a connection on which the incoming traffic is present for example the default WAN connection Enable UPnP Select to enable UPnP WAN Connection Select WAN connection that will use UPnP LAN Connection Select LAN connection that will use UPnP Application SNTP Simple network timing protocol SNTP is a protocol used to synchronize the system time to the publ...

Страница 32: ...e and disable it Application SNMP SNMP Simple Network Management Protocol is a troubleshooting and management protocol which uses the UDP protocol on port 161 to communicate between clients and servers SNMP uses a manager MIB management information base agent solution to fulfill the network management needs The agent is a separate station that can request data from an SNMP agent in each of the dif...

Страница 33: ... no restrictions on a host s location There are no restrictions on the number of members that may belong to a host group A host may belong to multiple host groups Non group members may send UDP datagram s to the host group Multicasting is useful when the same data needs to be sent to more than one device For instance if one device is responsible for acquiring data that many other devices need then...

Страница 34: ...20 minutes otherwise the account expires Once the user has logged in if the session remains inactive for more than 20 minutes the user will be logged out and the account expires WAN Update Permit this user to change WAN Settings WAN Access Permit this user to Access WAN User Name Password Username and password needed to authenticate this connection Port Port number for remote access To access your...

Страница 35: ...col is intended to support a variety of functionalities to manage a collection of CPE including the following primary capabilities Auto configuration and dynamic service provisioning Software firmware image management Status and performance monitoring Diagnostics ACS URL Address of ACS server Periodic Inform Enabled Select this option if you want to enable Periodic Inform Periodic Inform Interval ...

Страница 36: ...rts three NAT mapping types One to One One LAN IP address is mapped to one public IP address Many to Many Multiple local IP addresses are mapped to shared public IP addresses Server Specify inside servers of different services behind the NAT to be accessible to the outside world LAN IP IP address of host in local network Subnet LAN IP Available only for Many to Many Specify subnet of LAN IP addres...

Страница 37: ...rity Select which DNS Servers will be used Auto Discovered resolved automatic during connection or User Configured entered in fields below Only Auto Discovered DNS Servers Only User Configured DNS Servers Auto Discovered then User Configured User Configured then Auto Discovered Primary Secondary DNS Enter IP address of primary and secondary DNS Server ...

Страница 38: ...nd FTP services You need to have registered a DDNS account with DDNS Provider i e DynDNS free of charge http www dyndns org or TZO http www tzo com Connection WAN connection which will use DDNS settings DDNS Server DDNS service provider DDNS Client Select this checkbox to enable DDNS User Name Type the username assigned to you by your DDNS provider Password Type the password assigned to you by you...

Страница 39: ...llow user s computer to surf the web Auto NetBIOS It allows proxy server to use any NetBIOS name which the Auto NetBIOS still allow computer to surf the web with a condition that the router gateway MUST be in Private IP Ranges Private IP Ranges Class A 10 0 0 0 10 255 255 255 Class B 172 16 0 0 172 31 255 255 Class C 192 168 0 0 192 168 255 255 Auto Proxy Refers to any valid Private IP proxy setti...

Страница 40: ...going connection to a predetermined port on a server Name Enter rule name Start End Trigger Port Enter range of ports on server that must be accessed from LAN computer to open incoming port s Start End Open Port Enter port that will be opened when trigger port is accessed Protocol Type Select protocol that will be used to trigger port or will be allowed to access open port Connection WAN connectio...

Страница 41: ... rules Category Rules are grouped based on their purpose You can create your own rules in User Category Available Rules List of all available rules in selected category Select rule and click Add to add this rule to Applied Rules list Applied Rules List of all active rules for selected host Select rule and click Remove to remove this rule from Applied Rules list New Active only under User category ...

Страница 42: ...rules When bridge filtering is enabled each frame is examined against every defined filter rule in sequence When a match is found the appropriate filtering action allow or deny is performed Up to 20 filter rules are supported with bridge filtering Enable Bridge Filters Select to enable Bridge Filters function Enable Bridge Filters Management interface Select to enable specified in Bridge Filters M...

Страница 43: ...ter from WAN Remote Netmask Changing Netmask will allow more then one IP address to access router from WAN Redirect Port Port needed to access router from WAN Application SSH Access Control SSH Access control allows you to access the router remotely via SSH from the WAN side Enable Select to enable SSH access to router from WAN Choose a connection Select WAN connection used for SSH Access Remote H...

Страница 44: ...s to be translated back to the domain mapping when the packet leaves the router There are 6 types of CoS in descending priority CoS1 CoS2 CoS3 CoS4 CoS5 CoS6 The rules are 1 CoS1 has absolute priority and is used for expedited forwarding EF traffic This is always serviced till completion 2 CoS2 CoS5 are used for assured forwarding AF classes They are serviced in a strict round robin manner using t...

Страница 45: ... There are three Egress modes No Egress Mode The default Egress page setting for all interfaces is No Egress In this mode the domain mappings of the packets are untouched Layer 2 The Egress Layer 2 page allows you to map the CoS of an outgoing packet to user priority bits which is honored by the VLAN network Again this feature is only configurable on the WAN interfaces as VLAN is only supported on...

Страница 46: ...nded Class of Service The selections are in the order of descending priority CoS1 CoS2 CoS3 CoS4 CoS5 and CoS6 User Priority The selections are 0 1 2 3 4 5 6 7 Layer 3 Egress Layer 3 enables you to map CoS to ToS so that the priority marking of outgoing packets can be carried over to the IP network Interface Select the interface to configure the QoS for outgoing packets Default Non IP Locally gene...

Страница 47: ...rried over There are four Ingress modes Untrusted Mode Untrusted is the default Ingress page setting for all interfaces In this mode no domain mapping is honored in the router All packets are treated as CoS6 best effort Layer 2 Layer 2 allows you to map an incoming packet with VLAN priority to CoS This feature is only configurable on the WAN interfaces as VLAN is only supported on the WAN side in ...

Страница 48: ... bits of incoming packets from the IP network to CoS for each WAN LAN interface Interface For both WAN and LAN interfaces you can configure QoS for layer 3 IP data traffic Class of Service This CoS field allows you to map incoming layer 3 WAN LAN packets to one of the following CoS in the order of descending priority CoS1 CoS2 CoS3 CoS4 CoS5 and CoS6 ToS The Type of Service field takes values from...

Страница 49: ... of Service The selections are in the order of descending priority CoS1 CoS2 CoS3 CoS4 CoS5 and CoS6 QoS QoS Shaper Configuration Three shaper algorithms are supported HTB Low Latency Queue Discipline PRIOWRR Note Egress TCA is required if shaper is configured for that interface Interface The selections are WAN LAN interfaces except WLAN which does not support Shaper feature This field needs to be...

Страница 50: ...his is similar to the Low Latency Queue discipline except that PRIOWRR is packet based instead of rate based QoS Policy Routing Configuration The Policy Routing Configuration enables you to configure policy routing and QoS Ingress Interface The incoming traffic interface for a Policy Routing rule Selections include LAN interfaces WAN interfaces Locally generated traffic and not applicable Examples...

Страница 51: ... Mark This field is enabled only when Locally Generated is selected in the Ingress Interface field The mark for DNS traffic generated by different applications are described below Dynamic DNS 0xE1 Dynamic Proxy 0xE2 Web Server 0xE3 MSNTP 0xE4 DHCP Server 0xE5 IP tables Utility 0xE6 PPP Deamon 0xE7 IP Route 0xE8 ATM Library 0xE9 NET Tools 0xEA RIP 0xEB RIP v2 0xEC UPNP 0xEE Busybox Utility 0xEF Con...

Страница 52: ... the remote LAN network or host to which you want to assign a static route Enter the IP address of the host for which you wish to create a static route here For a standard Class C IP domain the network address is the first three fields of the New Destination IP while the last field should be 0 The Subnet Mask identifies which portion of an IP address is the network portion and which portion is the...

Страница 53: ...at RIP routes will be updated Selecting In means that the router will only incorporate received RIP information Selecting Out means that the router will only send out RIP information Selecting both means that the router will incorporate received RIP information and send out updated RIP information The protocol is dependent upon the entire network Most networks support RIP v1 If RIP v1 is selected ...

Страница 54: ...arding decisions Packets are routed according to the packet s destination IP address System Password Select Enable Authentication checkbox strongly recommended enter User Name and password in Password and Confirmed Password fields and enter Idle Timeout Use entered User Name and Password when accessing router s Web Interface ...

Страница 55: ...firmware file Then click Update Gateway The update may take a few minutes Make sure that the power is not turned off during the update process Once the upgrade is complete the router will reboot You will need to log back into the router after the firmware upgrade is completed Restore to Default Click OK if you want to reset all settings to factory defaults ...

Страница 56: ... Primary SSID The SSID is a unique name to identify the router in the Wireless LAN Wireless clients associating to the router must have the same SSID Hidden SSID Check this box to hide the SSID such that a station can not obtain the SSID through passive scanning Uncheck to make the SSID visible so a station can obtain the SSID through passive scanning Channel B G Select channel used by router to c...

Страница 57: ...hreshold number of bytes for enabling RTS CTS handshake Data with its frame size larger than this value will perform the RTS CTS handshake Set this attribute to be larger than the maximum MSDU MAC Service Data Unit size to TURN OFF the RTS CTS handshake Set this attribute to ZERO to TURN ON the RTS CTS handshake Frag Threshold The threshold number of bytes for the fragmentation boundary for direct...

Страница 58: ...D function To add Secondary SSID enter its name in Secondary SSID field check Hide SSID box if you want it to be hidden and click Add All secondary SSID s will be displayed on the list below To delete SSID select appropriate checkbox in Delete column You can add up to 3 secondary SSID s Wireless Security It is important for user to enforce security in wireless LAN environment This is to prevent un...

Страница 59: ...sed select its strength Cipher and enter Encryption Key any 10 Cipher 64 bits 26 Cipher 128 bits or 58 Cipher 256 bits hexadecimal digits 0 9 A F 802 1x 802 1x is a security protocol for WLAN It is a port based network access control that keeps the network port disconnected until authentication is completed 802 1x is based on extensible authentication protocol EAP EAP messages from the authenticat...

Страница 60: ... key integrity protocol TKIP for data encryption WPA2 also known as 802 11i uses advanced encryption standard counter mode CBC MAC protocol AES CCMP for data encryption WPA WPA2 AnyWPA select version of WPA authentication that will be used to secure this wireless network Enable WPA2 Pre authentication Only for WPA2 AnyWPA Pre authenticacion keeps the network port disconnected until authentication ...

Страница 61: ...or ban wireless clients by using the MAC address Enable Access List Select this checkbox to enable Access List Allow Only listed clients will be allowed to connect to router Not listed clients will be banned from connecting to router Ban Only listed client will be banned from connecting to router Not listed client will be allowed to connect to router Associated Stations Clients connected to the wi...

Страница 62: ... management protocol to establish and maintain links between Router WDS Name The WDS name is used to identify WDS network The field takes up to eight characters Two or more WDS networks may exist in the same area Activate as Root This field must be checked for the root device in WDS hierarchy Only one WDS root device may exist in WDS network This field is not applicable for Crude mode WDS Privacy ...

Страница 63: ...d filter and add the available rules for a given category You can also create edit or delete your own IP filter rules Select LAN Group LAN IP Select Group and then enter LAN IP address of host which rules you want to configure Select Any in LAN IP to set rules to all hosts in selected group New IP Opens LAN Clients page where you can add new static IP address refer to LAN LAN Clients section for m...

Страница 64: ...y Use this button to delete selected rule You can open below pages from IP Filters page Rule Management New Rule The Rule Management page allows you to create new rules To create new rule enter Rule Name Protocol Port Start Port End and Port Map and then click Apply Created rules can be also used to set Port Forwarding Advanced Tab Custom IP Filters The Custom IP Filters page allows you to create ...

Страница 65: ...ng describing a unique location on the Internet If the URL contains a blocked keyword then access to that website will be denied Enable Select this checkbox to enable URL Filter Keyword Enter keyword you want to block and click Add Blocked keywords List of all blocked keywords Select a keyword and click Remove to remove the keyword from the list ...

Страница 66: ...tatus Tab The Status Tab provides the status for different connections or interfaces Connection Status Connection Status displays the type of protocol the WAN IP address the connection state and the duration of your Internet connection ...

Страница 67: ...that level or higher are sent to the log server and can be viewed using the server log application which can be downloaded from the web To enable remote logging 1 Select a Log Level There are 8 log levels listed below in order of severity Panic System panic or other condition that causes the router to stop functioning Alert Conditions that require immediate correction such as a corrupted system da...

Страница 68: ...e the log will be sent to and then click Add 3 Click Apply The IP address will appear in the Select a logging destination drop down menu To disable a remote log select the IP address to be deleted from the Select a logging destination drop down menu and click Delete Network Statistics The Ethernet and DSL line statuses are displayed in this page Network Statistics Ethernet Network Statistics DSL ...

Страница 69: ...1 5 69 Network Statistics Wireless DDNS Update Status DDNS Update Status displays the WAN connection status By default DDNS is disabled When the DDNS is enabled the DDNS client updates every time the router gets a new IP address ...

Страница 70: ...Cerberus ADSL2 Wi Fi P 6331 5 70 DHCP Clients DHCP Clients displays the MAC address IP address host name and lease time QoS Status This page displays the Quality of Service and the packet statistics ...

Страница 71: ...Cerberus ADSL2 Wi Fi P 6331 5 71 Modem Status This page displays the model status Product Information This page displays the product information and software versions ...

Страница 72: ... wireless activities WDS configuration and states WDS management statistics WDS database Help Tab The Help Tab provides documentation for various topics like Firewall Bridge Filters LAN Clients LAN Group Configuration PPP Configuration UPnP IP QoS and Routing Information Protocol ...

Страница 73: ...for faulty Ethernet cables 3 Make sure your computer s Ethernet card is working properly 4 If these steps fail to correct the problem contact your local distributor for assistance ADSL LED The ADSL LED on the front panel does not light up 1 Check the telephone wire and connections between the router ADSL port and the wall jack 2 Make sure that the telephone company has checked your phone line and ...

Страница 74: ...between your router and the PC Make sure you have uninstalled any software firewall for troubleshooting 2 Make sure that the IP address and the subnet mask is consistent between the router and the workstation Problems with WAN Interface Initialization of the ADSL connection failed 1 Check the cable connections between the ADSL port and the wall jack The ADSL LED on the front panel of the router sh...

Страница 75: ...et Access I cannot access the Internet 1 Make sure the router is turned on and connected to the network 2 If the ADSL LED is off refer to Section ADSL LED of this troubleshooting 3 Verify your WAN settings 4 Make sure you entered the correct user name and password 5 For wireless stations check that both the router and wireless station s are using the same ESSID channel and WEP keys if WEP encrypti...

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