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Firewall

93

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Total incomplete TCP/UDP sessions HIGH - Defines the rate of new 
unestablished sessions that will cause the software to start deleting 
half-open sessions.

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Total incomplete TCP/UDP sessions LOW - Defines the rate of new 
unestablished sessions that will cause the software to stop deleting 
half-open sessions.

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Incomplete TCP/UDP sessions (per min) HIGH - Maximum number of 
allowed incomplete TCP/UDP sessions per minute.

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Incomplete TCP/UDP sessions (per min) LOW - Minimum number of 
allowed incomplete TCP/UDP sessions per minute. 

■

Maximum incomplete TCP/UDP sessions number from same host - 
Maximum number of incomplete TCP/UDP sessions from the same 
host. 

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Incomplete TCP/UDP sessions detect sensitive time period - Length of 
time before an incomplete TCP/UDP session is detected as incomplete.

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Maximum half-open fragmentation packet number from same host - 
Maximum number of half-open fragmentation packets from the same 
host.

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Half-open fragmentation detect sensitive time period - Length of time 
before a half-open fragmentation session is detected as half-open.

■

Flooding cracker block time - Length of time from detecting a flood 
attack to blocking the attack.

Содержание 3CRWDR300A-73

Страница 1: ...http www 3Com com Part No 10016794 Rev AA Published July 2008 Wireless 11n ADSL Firewall Router User Guide WL 603 3CRWDR300A 73 3CRWDR300B 73 ...

Страница 2: ...ram or documentation contained in or delivered to you in conjunction with this User Guide Unless otherwise indicated 3Com registered trademarks are registered in the United States and may or may not be registered in other countries 3Com and the 3Com logo are registered trademarks of 3Com Corporation Intel and Pentium are registered trademarks of Intel Corporation Microsoft MS DOS Windows and Windo...

Страница 3: ...s 14 Minimum System and Component Requirements 15 Physical Features 15 INSTALLING THE ROUTER Introduction 21 Safety Information 21 Positioning the Router 21 Using the Rubber Feet 22 Wall Mounting 22 Mounting Instructions for Cement Walls 22 Mounting Instructions for Wood Walls 23 Powering Up the Router 23 Connecting the Router 23 SETTING UP YOUR COMPUTERS Obtaining an IP Address Automatically 27 W...

Страница 4: ...d 38 Wizard Time and Time Zone 39 Wizard Connection Type 40 Wizard LAN Settings 46 Wizard Wireless Setting 47 Wizard Configuration Summary 52 CONFIGURING THE ROUTER Navigating through the Router Configuration Screens 53 Main Menu 53 Welcome Screen 53 Status 53 LAN Settings 54 LAN Settings Unit Configuration 54 DHCP Clients List 55 Wireless Settings 57 Configuration 58 Encryption 60 WPS 65 Connecti...

Страница 5: ... VLAN 104 Static Routes 106 RIP 108 DDNS 110 SNMP 111 Syslog 112 Proxy ARP 113 QoS Settings 114 Traffic Mapping 115 VPN 117 System Tools 124 Restart Router 124 Configuration 124 Upgrade 125 Time Zone 126 Ping 127 Traceroute 128 DNS Lookup 129 Diagnostic 129 Status and Logs 130 Status 130 ADSL Status 131 ATM PVC Status 131 Routing Table 132 Logs 132 Traffic Statistics 133 ...

Страница 6: ...Networking 139 Recovering from Corrupted Software 140 Power Adapter 141 Frequently Asked Questions 143 IP ADDRESSING The Internet Protocol Suite 145 Managing the Router over the Network 145 IP Addresses and Subnet Masks 145 How does a Device Obtain an IP Address and Subnet Mask 147 DHCP Addressing 147 Static Addressing 147 Auto IP Addressing 148 TECHNICAL SPECIFICATIONS 3Com Wireless 11n Cable DSL...

Страница 7: ...R YOUR 3COM PRODUCTS Register Your Product to Gain Service Benefits 160 Solve Problems Online 160 Purchase Extended Warranty and Professional Services 160 Access Software Downloads 161 Contact Us 161 Telephone Technical Support and Repair 161 GLOSSARY REGULATORY NOTICES INDEX ...

Страница 8: ......

Страница 9: ...le of ADSL connector and type of cable supplied with your Router for connection to your telephone line If a release note is shipped with the 3Com Wireless 11n ADSL Firewall Router and contains information that differs from the information in this guide follow the information in the release note Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format PDF on...

Страница 10: ...njury Table 2 Text Conventions Convention Description The words enter and type When you see the word enter in this guide you must type something and then press Return or Enter Do not press Return or Enter when an instruction simply says type Keyboard key names If you must press two or more keys simultaneously the key names are linked with a plus sign Example Press Ctrl Alt Del Words in italics Ita...

Страница 11: ... Document title Document part number on the title page Page number if appropriate Example 3Com Wireless 11n ADSL Firewall Router User Guide Part Number 10016794 Rev AA Page 24 Do not use this e mail address for technical support questions For information about contacting Technical Support please refer to Appendix E Related Documentation In addition to this guide each Router document set includes o...

Страница 12: ...10 ABOUT THIS GUIDE ...

Страница 13: ... to provide a cost effective means of sharing a single broadband Internet connection amongst several wired and wireless computers The Router also provides protection in the form of an electronic firewall preventing anyone outside of your network from seeing your files or damaging your computers The Router can also prevent your users from accessing Web sites which you find unsuitable Figure 1 shows...

Страница 14: ...Router in your network Figure 2 and Figure 3 it becomes your connection to the Internet Connections can be made directly to the Router or to an OfficeConnect Switch or Hub expanding the number of computers you can have in your network Figure 2 Example Network Using a Firewall Router with splitter ...

Страница 15: ...Wireless 11n ADSL Firewall Router 13 Figure 3 Example Network Using a Firewall Router without splitter ...

Страница 16: ...mote access to Web FTP and other services on your network Security Firewall protection against Internet hacker attacks and encryption to protect wireless network traffic Package Contents The Router kit includes the following items One 3Com Wireless 11n ADSL Firewall Router One power adapter for use with the Router Four rubber feet One telephone cable only for 3CRWDR300A 73 version One Ethernet cab...

Страница 17: ...00 Mbps or 10 100 1000 Mbps NIC for each computer to be connected to the LAN port on your Router An 802 11b 802 11g or 802 11n draft2 0 compliant wireless NIC An active ADSL subscription and connection A Web browser that supports JavaScript such as Netscape 4 7 or higher Internet Explorer 6 0 or higher or Mozilla 1 2 1 or higher or Apple s Safari Physical Features The front panel of the Router con...

Страница 18: ...ng configuration at power up 4 ADSL Data Blue Fast flash means transmitting receiving data Slow flash means ADSL connection is down 5 Wireless LAN WLAN Status LED Blue If the LED is on it indicates that wireless networking is enabled If the LED is flashing the link is OK and data is being transmitted or received If the LED is off the Wireless LAN has been disabled in the Router or there is a probl...

Страница 19: ...nt should be connected to the Router using WPS at any one time Attempting to connect two or more clients at once may result in connection failures When the WPS button is pressed or WPS is initiated using the PIN method in the web interface the WPS LED will flash at a medium rate for up to 2 minutes to indicate that a WPS connection can be made When a connection attempt is underway the LED will fla...

Страница 20: ...ON Do not force the antennae beyond their mechanical stops Rotating the antennae further may cause damage 2 ADSL Port RJ 11 port 3CRWDR300A 73 RJ 45 port 3CRWDR300B 73 connect this port with the telephone socket 3 Ethernet Ports 4 ports Using suitable RJ 45 cables you can connect your Router to a computer or to any other piece of equipment that has an Ethernet connection for example a hub or a swi...

Страница 21: ...er to Forgotten Password and Reset to Factory Defaults on page 138 for further details 6 Power Adapter Socket Only use the power adapter that is supplied with this Router Do not use any other adapter 7 WPS button Press this button for 3 seconds when making WPS setup Pushing the WPS button will automatically enable WPS Then initiate the WPS procedure on the wireless NIC within two minutes Refer to ...

Страница 22: ...20 CHAPTER 1 INTRODUCING THE ROUTER ...

Страница 23: ...illez lire attentivement la section Consignes importantes de sécurité avant de mettre en route Positioning the Router You should place the Router in a location that is conveniently located for connection to the telephone socket is centrally located to the wireless computers that will connect to the Router A suitable location might be on top of a high shelf or similar furniture to optimize wireless...

Страница 24: ...l when you put 3Com 11n ADSL Router on top of another unit if the unit underneath is hot this may impact the reliability of 3Com 11n ADSL Router Wall Mounting There are two slots on the underside of the Router that can be used for wall mounting The Router must be mounted with the LEDs facing upwards When wall mounting the unit ensure it is within reach of the power outlet When wall mounting the un...

Страница 25: ...y push the Router on to the wall and move it downwards to secure CAUTION When making connections be careful not to push the unit up and off the wall Powering Up the Router To power up the Router 1 Plug the power adapter into the power adapter socket located on the back panel of the Router 2 Plug the power adapter into a standard electrical wall socket Connecting the Router The first step for insta...

Страница 26: ...k providing ADSL service to the ADSL port on your Router When inserting an ADSL RJ 11 Annex A or RJ 45 Annex B plug be sure the tab on the plug clicks into position to ensure that it is properly seated If you are using splitterless ADSL service add low pass filters between the ADSL wall jack and your telephones These filters pass voice signals through but filter data signals out ...

Страница 27: ...r If you are using a splitterless G lite connection then your service provider will attach the outside ADSL line directly to your phone system In this case you can connect your phones and computer directly to the incoming ADSL line but you will have to add low pass filters to your phones as shown below Figure 9 Figure 8 Installing with a splitter Voice Data Residential Connection Point NID Plain O...

Страница 28: ...onfiguration from a computer that is directly connected to one of the LAN ports If you configure the Router from a wireless computer note that you may lose contact with the Router if you change the wireless configuration To communicate wirelessly with your Router your wireless NIC should be set as follows Encryption none SSID 3Com Channel 11 Plain Old Telephone System POTS Filter or Voice Data Voi...

Страница 29: ...s follow the instructions in this chapter Obtaining an IP Address Automatically Windows 2000 If you are using a Windows 2000 based computer use the following procedure to change your TCP IP settings 1 From the Windows Start Menu select Settings Control Panel 2 Double click on Network and Dial Up Connections 3 Double click on Local Area Connection 4 Click on Properties 5 A screen similar to Figure ...

Страница 30: ...l Area Properties Screen 6 Ensure that the options Obtain an IP address automatically and Obtain DNS server address automatically are both selected as shown in Figure 11 Click OK Figure 11 Internet Protocol TCP IP Properties Screen 7 Restart your computer ...

Страница 31: ...Properties and click continue 5 A screen similar to Figure 12 should appear Select Internet Protocol Version 6 Version 4 TCP IPv6 v4 and click on Properties Figure 12 Local Area Connection Properties Screen 6 Ensure that the options Obtain an IPv6 v4 address automatically and Obtain DNS servers address automatically are both selected as shown in Figure 13 Click OK Figure 13 Internet Protocol Versi...

Страница 32: ...ick on Properties 6 Ensure that the options Obtain an IP address automatically and Obtain DNS servers automatically are both selected Click OK 7 Restart your computer Macintosh If you are using a Macintosh computer use the following procedure to change your TCP IP settings 1 From the desktop select Apple Menu Control Panels and TCP IP 2 In the TCP IP control panel set Connect Via to Ethernet 3 In ...

Страница 33: ...een similar to Figure 14 should be displayed 4 Select the Never dial a connection option Figure 14 Internet Properties Screen You may want to remove the PPPoE client software from your computer to free resources as it is not required for use with the Router Disabling Web Proxy Ensure that you do not have a web proxy enabled on your computer Go to the Control Panel and click on Internet Options Sel...

Страница 34: ...32 CHAPTER 3 SETTING UP YOUR COMPUTERS ...

Страница 35: ...ition to the documentation the 3Com Detect Application To use 3Com Detect to connect to the Web interface of your Router do the following On the computer that is connected to your Router either directly or on a network that is on the same subnet insert the CD ROM into its CD drive If you have autorun enabled you will be presented with a menu showing the contents of the CD ROM Select the 3Com Detec...

Страница 36: ...on for a connected Router default or specifying an IP range Note that specifying a large range may take some time for the search to complete see Figure 16 and Figure 17 Figure 16 Discovery Screen search the same subnet Figure 17 Discovery Screen search IP range Once your Router has been located you will see the list see Figure 18 Select the Router to which you want to connect and click Open Your d...

Страница 37: ...orer 6 0 or higher or Mozilla 1 2 1 or higher or Apple s Safari To use the Setup Wizard 1 Ensure that you have at least one computer connected to the Router Refer to Chapter 2 for details on how to do this 2 Launch your Web browser on the computer 3 Enter the following URL in the location or address field of your browser http 192 168 1 1 Figure 19 The Login screen displays Figure 19 Web Browser Lo...

Страница 38: ...l appear see Figure 21 Please select the country form the drop down menu and click Apply 1 To comply with US FCC regulations operation for any country is limited to channels from 1 to 11 2 Customers outside of the US Canada or Taiwan can download the firmware from the 3Com website www 3com com which will enable operation on channels 12 13 You will be asked to verify your country before you can dow...

Страница 39: ...22 There are three tabs Notice Board Password and Wizard Figure 22 Welcome Screen Go to the Notice Board tab to see the current software information To view the Web help click the Help button Go to the Password tab to change the password Figure 23 Go to the Wizard tab to do a quick setup of the Router Figure 24 The password screen allows you to change the current password and set the login time li...

Страница 40: ... the time period in Login Timeout to set a maximum period of time for which the login session is maintained during inactivity default 10 minutes Then click Apply Wizard Change Password To ensure the security of your Router it is recommended that you choose a new password this should be a mix of letters and numbers and not easily guessed by others To leave the current password unchanged leave the f...

Страница 41: ...ou want to automatically synchronize the Router with a public time server check the Enable box in the Using Time Server NTP field 3 Select the time zone in the Set Time Zone drop down menu 4 Enter the time in the Synchronization Interval field 5 Select the desired servers from the Time Server drop down menu 6 Check the Enable box in the Daylight Savings field if daylight savings applies to your ar...

Страница 42: ...ype Screen Select a mode from the following options and click Next PPPoE PPP over Ethernet providing routing for multiple PCs see page 41 PPPoA PPP over ATM providing routing for multiple PCs see page 42 Bridge Mode for a single PC RFC1483 Bridged Mode see page 43 Routing Mode over ATM RFC1483 Routed Mode for multiple PCs see page 44 Dynamic Fixed IP in 1483 Bridge Mode For Multiple PCs see page 4...

Страница 43: ...the Username field 2 Enter your password in the Password field 3 Re type your password in the Retype Password field 4 Enter your VPI and VCI information in the VPI VCI fields 5 Select the encapsulation type LLC or VC MUX in the Encapsulation drop down menu This information should be provided to you by your ISP Check all of your settings and then click Next The LAN Settings screen will then be disp...

Страница 44: ... 2 Enter your password in the Password field 3 Re type your password in the Retype Password field 4 Enter your VPI and VCI information in the VPI VCI fields 5 Select the encapsulation type LLC or VC MUX in the Encapsulation drop down menu This information should be provided to you by your ISP Check all of your settings and then click Next The LAN Settings screen will then be displayed refer to Fig...

Страница 45: ...ing the data between them based on the hardware address To set up the Router for use with an RFC1483 bridged connection use the following procedure Figure 29 Bridged Mode Screen 1 Enter your VPI and VCI information in the VPI VCI fields 2 Select the encapsulation type LLC or VC MUX in the Encapsulation drop down menu This information should be provided to you by your ISP Check all of your settings...

Страница 46: ...ddress in the WAN IP field 2 Enter the subnet mask in the Subnet Mask field 3 Enter the default gateway IP address in the Default Gateway field 4 Enter the DNS address in the DNS field 5 Enter your VPI and VCI information in the VPI VCI fields 6 Select the encapsulation type LLC or VC MUX in the Encapsulation drop down menu This information should be provided to you by your ISP Check all of your s...

Страница 47: ...r check the Get WAN IP By DCHP checkbox and then click Next To assign a fixed IP address 1 Enter your IP address in the WAN IP field 2 Enter the subnet mask in the Subnet Mask field 3 Enter the default gateway IP address in the Default Gateway field 4 Enter the DNS address in the DNS field 5 Enter your VPI and VCI information in the VPI VCI fields 6 Select the encapsulation type LLC or VC MUX in t...

Страница 48: ...r the new IP address in the IP Address field and then enter the subnet mask in the Subnet Mask field 2 Check the Enable DHCP Server box to enable the DHCP function 3 Enter the client IP address range in the IP Pool Start Address and IP Pool End Address fields You can also click Auto IP Range to automatically set the starting and ending IP address 192 168 1 2 192 168 1 254 4 Click Next The Wireless...

Страница 49: ...network an unique name For advanced settings please click Wireless Settings on the left menu bar after completing this Setup Wizard setting 3 Click Next The security mode screen appears Security Mode Select the Security Mode five options available Disabled in this mode wireless transmissions will not be encrypted and will be visible to everyone However when setting up or debugging wireless network...

Страница 50: ...64 bit WEP Screen To enable 64 bit WEP 1 You can enter the 64 bit WEP key manually Enter the WEP key as 5 pairs of hex digits 0 9 A F Or you can generate the 64 bit WEP key automatically Enter a memorable passphrase in the Passphrase box and then click Generate to generate the hex keys from the passphrase For 64 bit WEP you can enter up to four keys in the fields Key 1 to Key 4 The radio button on...

Страница 51: ... client devices to use WEP Figure 36 128 bit WEP To enable 128 bit WEP 1 You can enter the 128 bit WEP key manually enter your WEP key as 13 pairs of hex digits 0 9 A F Or you can generate the 128 bit WEP key automatically enter a memorable passphrase in the Passphrase box and then click Generate to generate the hex keys from the passphrase 2 Click Next Note that the WEP keys on each device of the...

Страница 52: ... for WPA AES for WPA2 and AES for both WPA and WPA2 WPA supports TKIP and AES Encryption technique for some old module of wireless client cards they may only support TKIP In this case we suggest you to select AUTO for WPA AES for WPA2 If your wireless client cards can support AES over WPA we suggest you directly select AES for both WPA and WPA2 4 Enter the pre shared key in the Pre shared Key PSK ...

Страница 53: ... for WPA2 and AES for both WPA and WPA2 WPA supports TKIP and AES Encryption technique for some old module of wireless client cards they may only support TKIP In this case we suggest you to select AUTO for WPA AES for WPA2 If your wireless client cards can support AES over WPA we suggest you directly select AES for both WPA and WPA2 4 Enter the IP address of the RADIUS server on your network into ...

Страница 54: ... will appear Verify the configuration information of the Router and then click Apply to save your settings 3Com recommends that you print out this page for your records Figure 39 Configuration Summary Screen Your Router is now configured and ready for use See Chapter 5 for a further detailed description of the Router configuration ...

Страница 55: ...default IP is http 192 168 1 1 However if you changed the Router LAN IP address during initial configuration use the new IP address instead Enter your password to login to the management interface The default password is admin Main Menu The main menu is located on the left side as shown in Figure 40 When you click on an item from the main menu the corresponding screen will then appear in the cente...

Страница 56: ...Mask The default setting is 255 255 255 0 Enable Disable the DHCP Server Function The default is Enable Specify the Starting and Ending IP Pool address The default is Starting 2 Ending 254 Specify the IP address Lease Time The default is One day Specify a local Domain Name This field is optional Specify the IP address of 3Com NBX call processor The Router will also provide a list of all client com...

Страница 57: ... for each computer 5 Specify the Local Domain Name for your network this step is optional 6 Enter the IP address of the NBX Call Processor in the 3Com NBX Call Processor field this step is optional 7 Check all of your settings and then click Apply DHCP Clients List The DHCP Clients List provides details on the devices that have received IP addresses from the Router The list is only created when th...

Страница 58: ...pe Whether the client is connected to the Router by wired or wireless connection Check the Fix checkbox to permanently fix the IP address Click Release to release the displayed IP address Click Add to allocate an IP address to a MAC address Enter the required details and click Apply to save your settings The DHCP server will give out addresses to both wired and wireless clients ...

Страница 59: ... You can enable or disable the wireless connection for your LAN When disabled no wireless PCs can gain access to either the Internet or other PCs on your wired or wireless LAN through this Router Figure 43 Wireless Settings Screen There are 8 tabs available Configuration Encryption WPS Connection Control Client List WMM WDS Advanced ...

Страница 60: ...e SSID to be used by your wireless network in the SSID field If there are other wireless networks in your area you should give your wireless network an unique name 5 Enable or disable SSID Broadcast A feature of many wireless network adapters is that a computer s SSID can be set to ANY which means it looks randomly for any existing wireless network The available networks are then displayed in a si...

Страница 61: ... when your wireless mode is 802 11n or 11n with 11b 11 g mixed mode If your wireless network is purely 11b only or 11g only or 11b and 11g mixed select 20 MHz 8 Select to turn on off the Protected Mode function As part of the 802 11g 802 11n specification Protected mode ensures proper operation of 802 11g 802 11n clients and access points when there is heavy 802 11b traffic in the operating enviro...

Страница 62: ...p down menu and click Apply There are five selections Disabled 64 bit WEP see page 61 128 bit WEP see page 62 WPA PSK no server this option includes both WPA and WPA2 see page 63 WPA with RADIUS Server this option includes both WPA and WPA2 see page 64 Disabled In this mode wireless transmissions will not be encrypted and will be visible to everyone However when setting up or debugging wireless ne...

Страница 63: ...P 1 You can enter the 64 bit WEP key manually enter the WEP key as 5 pairs of hex digits 0 9 A F Or you can generate the 64 bit WEP key automatically enter a memorable passphrase in the Passphrase field and then click Generate to generate the hex keys from the passphrase For 64 bit WEP you can enter up to four keys in the fields Key 1 to Key 4 The radio button on the left hand side selects the key...

Страница 64: ... wireless connection Figure 47 128 bit WEP Screen To setup 128 bit WEP 1 You can enter the 128 bit WEP key manually enter your WEP key as 13 pairs of hex digits 0 9 A F Or you can generate the 128 bit WEP key automatically enter a memorable passphrase in the Passphrase field and then click Generate to generate the hex keys from the passphrase The WEP keys on each device on the wireless network mus...

Страница 65: ... WPA AES for WPA2 and AES for both WPA and WPA2 WPA supports TKIP and AES Encryption technique for some old module of wireless client cards they may only support TKIP In this case we suggest you to select AUTO for WPA AES for WPA2 If your wireless client cards can support AES over WPA we suggest you directly select AES for both WPA and WPA2 4 Enter the pre shared key in the Pre shared Key PSK fiel...

Страница 66: ...PA2 and AES for both WPA and WPA2 WPA supports TKIP and AES Encryption technique for some old module of wireless client cards they may only support TKIP In this case we suggest you to select AUTO for WPA AES for WPA2 If your wireless client cards can support AES over WPA we suggest you directly select AES for both WPA and WPA2 4 Enter the IP address of the RADIUS server on your network into the RA...

Страница 67: ...ess NIC on this screen PIN 1 Check the Enable WPS Function box The WPS PIN field will appear 2 Enter the PIN code in the WPS PIN field And then click Apply Please note that the PIN code is generated this way on the client side run the WPS utility which is provided by the vendor of your Wi Fi card and select the PIN method You should get an 8 digit PIN number from the WPS utility Enter that 8 digit...

Страница 68: ...rway the LED will flash slowly If the connection has been successful the WPS LED will remain illuminated for 5 minutes If the connection attempt has failed the WPS LED will flash rapidly for 5 minutes You can re try the connection by pressing the WPS button when the connection process will re start If you want to add a further client to the Router you do not need to wait for the 5 minute period to...

Страница 69: ...ions available in the Access rule for registered MAC address field if you click Allow this means only the MAC addresses registered here in the list will be allowed to access the Router via wireless link if you click Deny this means the registered MAC addresses will not be able to access the Router via wireless link Use the MAC Address Filtering List to quickly copy the MAC addresses of the current...

Страница 70: ...esh to update the list WMM Wireless Multimedia WMM mode which supports devices that meet the 802 11E QBSS standard WMM uses traffic priority based on the four ACs Voice Video Best Effort and Background The higher the AC priority the higher the probability that data is transmitted Check the Enable WMM Function box the WMM parameters table appears Figure 53 WMM Screen ...

Страница 71: ...time before the next data transmission attempt Specify the AIFS value in the range 0 15 microseconds CWMax Maximum Contention Window The maximum upper limit of the random backoff wait time before wireless medium access can be attempted The contention window is doubled after each detected collision up to the CWMax value Specify the CWMax value in the range 0 15 microseconds Note that the CWMax valu...

Страница 72: ...ed a transmit opportunity it can transmit data for a time up to the TxOp Limit This data bursting greatly improves the efficiency for high data rate traffic Specify a value in the range 0 65535 microseconds ACM Admission Control Mode for the access category When enabled clients are blocked from using the access category Default Disabled Ack Policy WMM Acknowledge Policy By default all wireless dat...

Страница 73: ...will interoperate In addition the security settings for WDS links should be the same as the one set up for your wireless clients Figure 54 Wireless WDS Settings Screen 1 Check the Enable WDS Function checkbox 2 To refresh the list of available access points click Rescan Wireless Networking If the MAC address of the desired APs is in the list of scanned APs you can simply check those APs to add the...

Страница 74: ...annel and wireless mode Set the wireless security setting and enable wireless WDS function Setting of the second Router Set the LAN IP setting use a different IP address from the IP address of the first Router Disable the DHCP function this would allow the first Router to allocate IP address for wireless clients Set the wireless channel and security same as the first Router but use a different SSI...

Страница 75: ...ss Settings 73 Figure 56 First Router Add WDS Screen Access the Web UI of the second Router repeat the above steps to add the first Router to the WDS table see Figure 57 Figure 57 Second Router Add WDS Screen ...

Страница 76: ...ing to broadcast and multicast messages Fragmentation Threshold this is the maximum size for directed data packets transmitted The use of fragmentation can increase the reliability of frame transmissions Because of sending smaller frames collisions are much less likely to occur RTS Threshold RTS stands for Request to Send this parameter controls what size data packet the low level RF protocol issu...

Страница 77: ...unicating with one another When enabled this creates a separate virtual network for your wireless network each of your wireless client will be in its own virtual network and will not be able to communicate with each other You may want to utilize this feature if you have many guests that frequently connect to your wireless network ...

Страница 78: ...eady contains information that s been configured using the Wizard in the initial setup If you want to change that information or set up other connection click Edit There are six options available for the connection mode Disable To disable the Internet connection function see page 77 PPPoE PPP over Ethernet providing routing for multiple PCs see page 77 PPPoA PPP over ATM providing routing for mult...

Страница 79: ...o connect to the Internet Figure 60 Disable Internet Connection Screen PPPoE PPP over Ethernet provides routing for multiple PCs this mode is often used for the DSL connection To configure this function correctly you should obtain the information from your ISP Figure 61 PPPoE Settings Screen ...

Страница 80: ... Do not make changes to this setting unless your ISP specifically requires a different setting other than 1454 7 IPCP is used by PPP protocol to get one IP address from the PPP server IPCP subnet function allows you to obtain a subnet IP address and netmask rather than an IP address Check this box to enable the function 8 IPCP Subnet Populate DHCP Server enable this function to allow the Router to...

Страница 81: ... NRT class VBR RT is used for connections in which there is a fixed timing relationship between samples VBR NRT is used for connections in which there is no fixed timing relationship between samples but that still need a guaranteed QoS Compare with ABR CBR and UBR UBR unspecified bit rate the UBR service class is intended for delay tolerant or non real time applications for example those which do ...

Страница 82: ... Username field And enter the password assigned to you by your ISP in the Password field Re enter your password in the Confirm Password field 4 Select always connected auto or manual from the Connect type drop down menu If you have a flat rate service charge for Internet connection select always connected If your ISP charges you by the minute do not select this mode 5 If you want your Router to au...

Страница 83: ...BR CBR constant bit rate the CBR service class is intended for real time applications for example those requiring tightly constrained delay and delay variation such as voice and video applications The consistent availability of a fixed quantity of bandwidth is considered appropriate for CBR service VBR variable bit rate QoS class defined by the ATM Forum for ATM networks VBR is subdivided into a r...

Страница 84: ...lect Bridge Mode from the Protocol drop down menu 2 Select VLAN 3 Enter the VPI VCI values Or click Auto Search to find out the values VPI Virtual Path Identifier and VCI Virtual Circuit Identifier numbers should be provided by your ISP 4 Select the Encapsulation VC MUX or LLC This information should be provided by your ISP 5 QoS Class select CBR UBR or VBR CBR constant bit rate the CBR service cl...

Страница 85: ...ming relationship between samples but that still need a guaranteed QoS Compare with ABR CBR and UBR UBR unspecified bit rate the UBR service class is intended for delay tolerant or non real time applications for example those which do not require tightly constrained delay and delay variation such as traditional computer communications applications The UBR service may be considered as best effort s...

Страница 86: ...ult gateway information 3 If your ISP provides DNS information check the DNS Automatic from ISP box 4 If the ISP requires you to input a Host Name enter it in the Host Name field 5 If your ISP uses DHCP to automatically assign IP addresses check the DHCP Client checkbox 6 Check the Add Default Route checkbox to set this PVC as the default route this is used when you configure more than one PVC for...

Страница 87: ...NRT class VBR RT is used for connections in which there is a fixed timing relationship between samples VBR NRT is used for connections in which there is no fixed timing relationship between samples but that still need a guaranteed QoS Compare with ABR CBR and UBR UBR unspecified bit rate the UBR service class is intended for delay tolerant or non real time applications for example those which do n...

Страница 88: ...L5 IPoEoA adopts a three layer architecture with IP encapsulation at the uppermost layer IP over Ethernet IPoE in the middle and IPoEoA at the bottom When a device is connected to a remote access server at high speed to access an external network PVC over ATM is used because of the long distance In this case it is required for the ATM port of the server to carry Ethernet packets which is known as ...

Страница 89: ...ity of a fixed quantity of bandwidth is considered appropriate for CBR service VBR variable bit rate QoS class defined by the ATM Forum for ATM networks VBR is subdivided into a real time RT class and non real time NRT class VBR RT is used for connections in which there is a fixed timing relationship between samples VBR NRT is used for connections in which there is no fixed timing relationship bet...

Страница 90: ...2 14 Figure 66 DNS Screen If the DNS information is automatically provided by your ISP every time you connect to it check the Automatic from ISP checkbox this is the default setting If your ISP provided you with specific DNS addresses to use enter them into the appropriate fields on the screen and click Apply Many ISPs do not require you to enter this information into the Router If you are using a...

Страница 91: ...n 1 Some ISPs require a host name If your ISP has this requirement enter the host name in the Host Name field 2 Three different ways to configure the WAN MAC Address If your ISP requires an assigned MAC address enter the values in the WAN MAC address field or If the computer that you are using is the one that was previously connected directly to the cable modem click Clone or To reset the MAC Addr...

Страница 92: ...acket Inspection SPI The Intrusion Detection Feature of the Router limits access for incoming traffic at the WAN port This feature is called a stateful packet inspection because it examines the contents of the packet to determine the state of the communications i e it ensures that the stated destination computer has previously requested the current communication This is a way of ensuring that all ...

Страница 93: ...th off For medium level of firewall protection DoS is on but SPI is off For high level of firewall protection refer to Figure 70 Both DoS and SPI are on for this level of firewall protection The higher the firewall level is the safer that your network is Figure 69 Low and Medium Level Firewall Protection Screen When abnormal network activity occurs an alerting email will be sent out to you Enter t...

Страница 94: ... structure for use by another packet TCP SYN wait Defines how long the software will wait for a TCP session to synchronize before dropping the session TCP FIN wait Specifies how long a TCP session will be maintained after the firewall detects a FIN packet TCP connection idle timeout The length of time for which a TCP session will be managed if there is no activity UDP session idle timeout The leng...

Страница 95: ...mber of allowed incomplete TCP UDP sessions per minute Maximum incomplete TCP UDP sessions number from same host Maximum number of incomplete TCP UDP sessions from the same host Incomplete TCP UDP sessions detect sensitive time period Length of time before an incomplete TCP UDP session is detected as incomplete Maximum half open fragmentation packet number from same host Maximum number of half ope...

Страница 96: ...e setting for that application If your application is not listed you will need to check with the application vendor to determine which ports need to be configured You can manually enter the port information into the Router To manually enter the port information 1 Specify the trigger port the one used by the application when it is initialized in the Trigger Port column and specify whether the trigg...

Страница 97: ...application vendor to find out which port settings you need The maximum number of virtual servers that can be configured is 20 Figure 72 Virtual Servers Screen A list of popular servers has been included to choose from Select the server from the Popular servers drop down menu Then click Add your selection will be added to the table If the server that you want to use is not listed in the drop down ...

Страница 98: ...nt up to unrestricted two way Internet access This may be necessary if the NAT feature is causing problems with an application such as a game or video conferencing application Figure 73 DMZ Screen Use this feature on a temporary basis The computer in the DMZ is not protected from hacker attacks Check the Enable DMZ box the IP Address of Virtual DMZ Host will appear 1 Enter the last digits of the L...

Страница 99: ...ply PC Privileges The Router can be configured to restrict access to the Internet email or other network services at specific days and times Restriction can be set for a single computer a range of computers or multiple computers You can define the traffic type permitted or not permitted to the Internet Note that this function requires time scheduling to be applied to access control you will need t...

Страница 100: ...eb sites and keywords defined in this screen will not be filtered out 3 Select the services to be blocked A list of popular services is listed on this screen to block a particular service check the appropriate Blocking checkbox If the service to be restricted is not listed here you can enter a custom range of ports at the bottom of the screen under User Defined Blocked Ports 4 If you want the rest...

Страница 101: ... define the rules in the PC Privileges screen see page 97 Figure 76 Schedule Rule Screen 1 Click Add Rule to add a schedule rule refer to Figure 77 Figure 77 Add Schedule Rule Screen 2 Enter a name and comment for the schedule rule in the Name and Comment fields 3 Specify the schedule rules for the required days and times note that all times should be in 24 hour format 4 Click Apply ...

Страница 102: ...xx Figure 78 URL Filter Screen 1 Check the Enable URL Filtering Function checkbox The rule table will appear 2 Enter the URL address or keywords in the URL Keyword field 3 Select Denied or Allowed from the Mode drop down menu To complete this configuration you will need to create or modify the filtering rule in the PC Privileges screen see page 97 From the PC Privileges Add PC screen Figure 75 if ...

Страница 103: ...u to set additional parameter details for the Router You can configure Security VLAN Static Routes RIP DDNS SNMP Syslog Proxy Arp QoS Settings Security Use the Security screen to set the advanced security settings for the Router Figure 79 Security Screen ...

Страница 104: ...and Play compliant Some applications require the Router s firewall to be configured in a specific way to operate properly This usually requires opening TCP and UDP ports and in some instances setting trigger ports An application that is Universal Plug and Play compliant has the ability to communicate with the Router basically telling the Router which way it needs the firewall configured The Router...

Страница 105: ...ed by some firewalls When this occurs the packet is dropped To allow the message to go through the firewall enable MSS Clamping MSS clamping will make Internet Connection Sharing set the MSS value low enough to match the external interface Remote Administration This feature allows you to make changes to your Router s settings from anywhere on the Internet Four options are available If you do not w...

Страница 106: ...ree other benefits It eases the change and movement of devices on IP networks With traditional IP networks network administrators spend much of their time dealing with moves and changes If users move to a different IP subnet the IP addresses of each end station must be updated manually With a VLAN setup if an end station in VLAN 1 is moved to a port in another part of the network you only need to ...

Страница 107: ...scription field Enter the IP Address and subnet mask in the corresponding fields Select to set the NAT Domain as public or private IGMP Snooping enabling it will turn on the feature that allows an Ethernet switch to listen in on the IGMP conversation between hosts and routers IGMP Querier enabling this function will send out periodic IGMP queries Click Apply ...

Страница 108: ...e of the VPN tunnel Figure 82 Static Routes Screen To add a static route entry to the table click Add see Figure 83 To change an existing entry click Edit To delete an entry click Delete Figure 83 Add Static Route Screen Enter the following information Network Address the network address of the static route Subnet Mask the subnet mask of the route A network address of 0 0 0 0 and a subnet mask of ...

Страница 109: ...ou should only configure either the Gateway information or select the Interface After you have finished making changes to the table click Apply Here is an example of setting up a static route IP address of your PC 10 1 4 52 Subnet mask 255 255 252 0 Default Gateway 10 1 4 254 Network Address 10 1 4 0 Figure 84 Add Static Route Example Screen ...

Страница 110: ...ization sends simplified routing data to other RIP enabled devices rather than full routing data 3 Select the Operation Mode Disable RIP is not enabled for the WAN or LAN interface Enable RIP is enabled for the WAN or LAN interface The router will transmit RIP update information to other RIP enabled devices Silent RIP is enabled however the Router only receives RIP update messages it will not tran...

Страница 111: ...int to each other preventing data loops 6 Use the Authentication Required field to choose the mode of authentication None Switches off authentication on the specified interface Password An unencrypted text password that needs to be set on all RIP enabled devices connected to this Router RIP information is not shared between devices whose passwords do not match 7 In the Password field enter the req...

Страница 112: ... hostname that points to your dynamic IP or static IP address or URL Before you set up DDNS you must obtain an account password or key and static domain name from your DDNS provider The Router supports five DDNS providers DynDNS org TZO com Dt DNS com No IP com Zoneedit com Figure 86 Dynamic Domain Name Server DDNS Screen 1 Check Enable DDNS 2 Select the provider and then enter the necessary infor...

Страница 113: ...onfigure SNMP Community 1 In the Community column enter the name of the SNMP communication channel Your SNMP management agent needs to be configured with this name so that it can communicate with your Router 2 In the Access column select Read to allow the management agent to collect data for example bandwidth usage from your Router Select Write to allow the management agent to change the configura...

Страница 114: ...ame of the SNMP communication channel to which you want your Router to send status messages 3 Set the Version field to match the version of trap messaging that your SNMP management agent supports The Router supports V1 and V2c trap messaging Syslog Using third party syslog software this Syslog Server tool will automatically download the Router log to the specified server IP address Figure 88 Syslo...

Страница 115: ...er machine By faking its identity the Router accepts responsibility for routing packets to the real or intended destination This heightens the security for your network Figure 89 Proxy ARP Screen 1 Check the Enable ProxyARP box 2 Enter the corresponding IP address in the IP Address From and IP Address To fields 3 Click Apply ...

Страница 116: ...cations such as VoIP gaming and VPN This QoS function allows you to classify traffic of applications and provides them with differentiated services Diffserv Figure 90 QoS Settings Screen 1 Check the Enable QoS box and enter the value for WAN Out Bandwidth 2 Define the minimum percentage of bandwidth for each type of traffic 3 Check the corresponding box to allow more bandwidth allocation 4 Click A...

Страница 117: ...Add the Edit Traffic Class screen will appear Figure 92 Edit Traffic Class Screen 1 Define the Rule name 2 Select the traffic type from drop down menu 3 Select the forwarding group from the Map to Forwarding Group drop down menu 4 Select the value from the Remark DSCP as drop down menu 5 Click the ADVANCED CONFIG button a more detailed Edit Traffic class screen will appear see Figure 93 ...

Страница 118: ...116 CHAPTER 5 CONFIGURING THE ROUTER Figure 93 Detailed Edit Traffic Class Screen Enter the information then click Apply to make the settings to take effect ...

Страница 119: ... to administer PPTP does not support gateway to gateway connections and is only suitable for connecting remote users Check that your ISP s routers support this protocol before you use it Note Enabling the PPTP Server disables PPTP pass through to a Virtual Server on the LAN Pass through outbound from clients on the LAN to servers on the Internet is unaffected L2TP over IPSec this is a combination ...

Страница 120: ...ROUTER Figure 94 VPN Screen 1 Check the Enable IPSec box configuration details screen appears Figure 95 Enable IPSec Screen 2 Enter the Local ID Name of your VPN the default is 3ComVPN 3 Click Add to create a new entry see Figure 96 ...

Страница 121: ...ntered identically on the IPSec software installed on the client s machine If IP_IPV4_ADDR is selected then enter the IP address and subnet mask in the Remote Network Address and Remote Subnet Mask fields The remote network address is usually the network address of the LAN connected to the remote server If ID_USER_FQDN is selected then enter the name for the Remote Party ID in the text box area ne...

Страница 122: ...thentication Algorithm drop down menu Both ends of the connection must use the same value 10 Select DES 3DES Null AES 128 AES 192 or AES 256 from the Encrypt Algorithm drop down menu Both ends of the connection must use the same value 11 Enter the Key lifetime in seconds The default is 3600 seconds The value must be at least 300 seconds 12 PFS Perfect Forward Secrecy check this box then the Diffie...

Страница 123: ...re 97 Figure 97 Enable L2TP Screen 1 Enter the Pre shared Key for L2TP Server over IPSec Setting 2 Define the IP Address Pool for L2TP clients enter the start end address 3 Click Add to create a new entry see Figure 98 Figure 98 Add New VPN Tunnel Parameter L2TP over IPSec Screen ...

Страница 124: ...connect box if you want to auto reconnect after disconnection if the L2TP Type Setting is set to L2TP Server go to step 6 6 Check the box to enable the Remote Network Setting and then enter the Remote Network Address and Remote Subnet Mask information 7 When the L2TP Type Setting is set to L2TP Client you would then need to enter the Pre shared Key information 8 Click Apply Check the Enable PPTP b...

Страница 125: ... as PPTP Client then set the Local Type Setting to Network or Host then enter the Remote Server IP Check the Auto reconnect box if you want to auto reconnect after disconnection if the PPTP Type Setting is set to PPTP Server go to step 6 6 Check the box to enable the Remote Network Setting and then enter the Remote Network Address and Remote Subnet Mask information 7 When the PPTP Type Setting is ...

Страница 126: ...metimes it may be necessary to restart or reboot the Router Restarting the Router from this screen will not delete any of your configuration settings Click the Restart the Router button to restart the Router Figure 101 Restart Router Screen Configuration Use this configuration screen to backup restore or reset the configuration details of the Router Figure 102 Configuration Screen ...

Страница 127: ...ck Restore Reset to Factory Default Using this option will reset all of the settings in the Router to the factory default settings It is recommended that you backup your settings before you restore all of the defaults To restore the factory default settings click Reset Note that all of your current configuration will be lost Upgrade From time to time 3Com may release new versions of the Router s f...

Страница 128: ...cord the security log and control client filtering Select the time zone that you reside in If you reside in an area that observes Daylight Saving then check the Enable Daylight Savings box The system clock may not update immediately Allow at least 15 minutes for the Router to contact the time servers on the Internet and get a response You cannot set the clock yourself You can specify which NTP ser...

Страница 129: ...s working properly Figure 105 Ping Screen 1 Enter the IP address or domain name in the IP Address or Domain Name field and click Ping 2 Select from the Number of times to Ping drop down menu 3 The Router keeps a log of the ping test click Clear Log to delete the records ...

Страница 130: ...ctions to a given server might be poor and can often help you figure out where exactly the problem is It also shows you how systems are connected to each other letting you see how your ISP connects to the Internet as well as how the target system is connected Figure 106 Traceroute Screen 1 Enter the IP address or domain name in the IP Address or Domain Name field and click Traceroute 2 The Router ...

Страница 131: ... in the IP Address or Domain Name field and click DNS lookup 2 The Router keeps a log of the DNS lookup test click Clear Log to delete the records Diagnostic This screen is designed to collect diagnostic information of this Router click the Start button to start the diagnostic then save the information in a file You can later use this information to analyze your network Figure 108 Diagnostic Scree...

Страница 132: ...rsion numbers for your Router s software and hardware and check the status of connections to Internet LAN and WLAN interfaces Status This screen shows Router status and statistics Release use this button to release the current IP Renew use this button to obtain a new IP Figure 109 Status Screen ...

Страница 133: ...ADSL modem status and statistics Figure 110 ADSL Status Screen ATM PVC Status This screen shows ATM PVC status and statistics Click Disconnect to disconnect from your ISP Click Connect to make a connection with your ISP Figure 111 ATM PVC Status Screen ...

Страница 134: ...shows any attempts that have been made to gain access to your network as well as the system activities Figure 113 Logs Screen Click Help to view the help file Click Save to save the log to the hard disk as a text file When prompted for a location to save the file to specify a file name and location and then click OK Click Clear to clear the log note that all current entries will be erased Click Re...

Страница 135: ... traffic statistics Use the Refresh button to update the information Note that the current implementation only shows traffic statistics per forwarding group Hence if QoS is not enabled this screen will always show zero values Figure 114 Traffic Statistics Screen ...

Страница 136: ...n support and help and also provide feedback to 3Com Support Figure 115 Support Screen This screen shows support information Feedback To provide feedback to 3Com please click Provide Feedback and this will connect you to the 3Com Web site Figure 116 Feedback Screen This screen shows feedback information ...

Страница 137: ...CAUTION Do not power the Router off and then immediately on Wait about five seconds between power cycles Check the following symptoms and solutions Check that the Router is connected to your computers and to the telephone line and that all the equipment is powered on Check that the LAN Status and SYNC LEDs on the Router are illuminated and that any corresponding LEDs on the NIC are also illuminate...

Страница 138: ...he Connections tab and click on the LAN Settings button at the bottom Make sure that the Proxy Server option is unchecked If you cannot browse to the Router use the winipcfg utility in Windows 98 ME to verify that your computer has received the correct address information from the Router From the Start menu choose Run and then enter winipcfg Check that the computer has an IP address of the form 19...

Страница 139: ...your line for you 4 There is too much noise on your phone line If you can hear noise on your line over the phone this may also affect your ADSL connection Contact your phone line supplier so that they can fix this for you 5 You may not have an ADSL filter on every phone socket used on the same line as the ADSL Router If you have connected new equipment on the phone line that is not connected via a...

Страница 140: ...ow or have forgotten the password follow the steps below to reset the Router to its factory default configuration CAUTION All your configuration changes will be lost and you will need to run the configuration wizard again before you can re establish your Router connection to the Internet Also other computer users will lose their network connections whilst this process is taking place so choose a t...

Страница 141: ... the same as those configured on the Router The Router cannot simultaneously support WPA and WEP encryption Ensure that you have the wireless computer enabled in the list of allowed MAC addresses if you are using MAC Address Filtering on the Router If you are having difficulty connecting or are operating at a low speed try changing the antenna positions on the rear of the Router For more effective...

Страница 142: ...ing the antenna on the Router or moving the wireless computer closer to the Router In an ideal network the Router should be located in the centre of the network with wireless computers distributed around it Applications are generally available with the computer wireless card to carry out a site survey Use this application to find the optimal siting for your wireless computer Consult your computer ...

Страница 143: ... the software upload If the Router does not resume normal operation following the upload it may be faulty Contact your supplier for advice Power Adapter Power Status Logo not lit This is probably because the Router does not have power Check the following Make sure the power lead from the power adapter is properly connected and the cord is not damaged Ensure the power adapter is correctly fitted in...

Страница 144: ...ence the part number for the power adapter supplied for your region is 3Com Number Region 3C15VHUS US and Canada 3C15VHUK UK 3C15VHME Europe and Middle East 3C15VHAA Australasia except Japan and Korea 3C15VHSA South Africa 3C15VHRA Argentina ...

Страница 145: ...idth consumed by each user There are only 4 LAN ports on the Router How are additional computers connected You can expand the number of connections available on your LAN by using hubs switches and wireless access points connected to the Router 3Com wireless access points and hubs and switches provide a simple reliable means of expanding your network contact your supplier for more information or vi...

Страница 146: ...144 CHAPTER 6 TROUBLESHOOTING ...

Страница 147: ...vice over the network the Router must be correctly configured with the following IP information An IP address A subnet mask IP Addresses and Subnet Masks Each device on your network must have a unique IP address to operate correctly An IP address identifies the address of the device to which data is being sent and the address of the destination network IP addresses have the format n n n x where n ...

Страница 148: ...ne 192 168 100 identifies the network on which the device resides Part two 8 identifies the device within the network This type of IP address operates on a subnet mask of 255 255 255 0 See Table 3 for an example about how a network with three computers and a Router might be configured Table 3 IP Addressing and Subnet Masking Type Two In larger networks where there are more devices the IP address o...

Страница 149: ...an IP address and subnet mask automatically DHCP assigns a temporary IP address and subnet mask which gets reallocated once you disconnect from the network DHCP will work on any client Operating System such as Windows 98 Windows NT 4 0 Windows 2000 Windows XP and Windows Vista Also using DHCP means that the same IP address and subnet mask will never be duplicated for devices on the network DHCP is...

Страница 150: ...me where devices allocate themselves an IP address at random from the industry standard subnet of 169 254 x x with a subnet mask of 255 255 0 0 If two devices allocate themselves the same address the conflict is detected and one of the devices allocates itself a new address Automatic IP addressing support was introduced by Microsoft in the Windows 98 operating system and is also supported in Windo...

Страница 151: ...tenna for RX function only and the gain value is 2 dBi WLAN Interfaces IEEE draft 802 11n Orthogonal Frequency Division Multiplexing OFDM Transmission rate 802 11n 40 MHz 300 Mbps automatic fallback to 243 216 162 135 121 5 108 81 54 40 5 27 13 5 Mbps 802 11n 20 MHz 130 Mbps automatic fallback to 117 104 78 65 58 5 52 39 26 19 5 13 6 5 Mbps Maximum channels 13 Range up to 304 8 m 1000 ft Sensitivi...

Страница 152: ...mum clients 128 E I R P 17 dBm Standard IEEE 802 11b Direct Sequence Spread Spectrum DSSS Transmission rate 11Mbps automatic fallback to 5 5 2 or 1 Mbps Maximum channels 13 Range up to 304 8 m 1000 ft Sensitivity 1 2 5 5 Mbps 85 dBm 11 Mbps 82 dBm typical Modulation CCK BPSK QPSK Encryption 40 64 bit WEP 128 bit WEP WPA WPA2 Maximum clients 128 E I R P 19 5 dBm Operating Temperature 0 C to 40 C 32...

Страница 153: ...N 55022 EN 55024 EN 61000 EN 301 489 1 ICES 003 Radio FCC Part 15 C RSS 210 EN 300 328 Environmental EN 60068 IEC 68 Telcom FCC Part68 See Regulatory Notices for conditions of operation System Requirements Operating Systems The Router will support the following Operating Systems Windows 98Se Windows NT 4 0 Windows ME Windows 2000 Windows XP Windows Vista Mac OS 8 5 or higher Unix ...

Страница 154: ...complies to the IEEE 802 3i u and x specifications Cable Specifications The Router supports the following cable types and maximum lengths Category 5 Fast Ethernet or Dual Speed Ethernet Twisted Pair shielded and unshielded cable types Maximum cable length of 100 m 327 86 ft ...

Страница 155: ...WARNING To ensure compliance with international safety standards only use the power adapter that is supplied with the unit WARNING The socket outlet must be near to the unit and easily accessible You can only remove power from the unit by disconnecting the power cord from the outlet WARNING This unit operates under SELV Safety Extra Low Voltage conditions according to IEC 60950 The conditions are ...

Страница 156: ... Sie sich bei den zuständigen Stellen ob die Verwendung von Funkfrequenz in dem Bereich in dem der Bluetooth Access Point eingesetzt werden soll erlaubt ist VORSICHT Bei der Installation und beim Ausbau des Geräts ist mit höchster Vorsicht vorzugehen VORSICHT Aufgrund von internationalen Sicherheitsnormen darf das Gerät nur mit dem mitgelieferten Netzadapter verwendet werden VORSICHT Die Netzsteck...

Страница 157: ... Nous vous demandons de lire attentivement les consignes suivantes de sécurité avant d installer ou de retirer l appareil AVERTISSEMENT La Router fournit et utilise de l énergie radioélectrique radio fréquence rf L utilisation de l énergie radioélectrique est interdite dans certains environnements L utilisateur devra se renseigner sur l autorisation de cette énergie dans la zone prévue AVERTISSEME...

Страница 158: ...du moyeu Si vous avez un problème physique avec le moyeu qui ne peut pas être résolu avec les actions de la résolution des problèmes dans ce guide contacter votre fournisseur AVERTISSEMENT Débranchez l adaptateur électrique avant de retirer cet appareil AVERTISSEMENT Ports RJ 45 Il s agit de prises femelles blindées de données RJ 45 Vous ne pouvez pas les utiliser comme prise de téléphone Branchez...

Страница 159: ...m s and its licensors proprietary rights and copyright notices in the same form as on the original You agree not to remove or deface any portion of any legend provided on any licensed program or documentation delivered to you under this Agreement ASSIGNMENT NO REVERSE ENGINEERING You may transfer the Software Documentation and the licenses granted herein to another party in the same country in whi...

Страница 160: ... All warranties and limitations of liability applicable to the Software are as stated on the Limited Warranty Card or in the product manual whether in paper or electronic form accompanying the Software however this End User Software License Agreement amends such Limited Warranty Card or product manual as follows 3Com s warranty and warranty disclaimers for the materials runs from 3Com to the purch...

Страница 161: ...159 ...

Страница 162: ... Helps you to troubleshoot 3Com products This query based interactive tool is located at http knowledgebase 3com com It contains thousands of technical solutions written by 3Com support engineers Purchase Extended Warranty and Professional Services To enhance response times or extend your warranty benefits you can purchase value added services such as 24x7 telephone technical support software upgr...

Страница 163: ...es cover feature enhancements incremental functionality and bug fixes but they do not include software that is released by 3Com as a separately ordered product Separately orderable software releases and licenses are listed in the 3Com Price List and are available for purchase from your 3Com reseller Contact Us 3Com offers telephone internet and e mail access to technical support and repair service...

Страница 164: ...616 1463 080 698 0880 00801 444 318 001 800 441 2152 Pakistan Call the U S direct by dialing 00 800 01001 then dialing 800 763 6780 Sri Lanka Call the U S direct by dialing 02 430 430 then dialing 800 763 6780 Vietnam Call the U S direct by dialing 1 201 0288 then dialing 800 763 6780 You can also obtain non urgent support in this region at this email address apr_technical_support 3com com Or requ...

Страница 165: ...998 2112 AT T 800 998 2112 AT T 800 998 2112 Grenada Guadalupe Guatemala Guyana Haiti Honduras Jamaica Mexico Mexico Local Monserrat Nicaragua Panama Paraguay Peru Puerto Rico Rest of Latin America St Kitts Nevis St Lucia St Vincent Suriname Trinidad and Tobago Turks and Caicos Uruguay Montevideo Venezuela Virgin Islands AT T 800 988 2112 AT T 800 998 2112 AT T 800 988 2112 AT T 800 998 2112 AT T ...

Страница 166: ...164 APPENDIX E OBTAINING SUPPORT FOR YOUR 3COM PRODUCTS ...

Страница 167: ...ing multiple input multiple output MIMO and many other newer features 10BASE T The IEEE specification for 10 Mbps Ethernet over Category 3 4 or 5 twisted pair cable 100BASE TX The IEEE specification for 100 Mbps Fast Ethernet over Category 5 twisted pair cable Access Point An access point is a device through which wireless clients connect to other wireless clients and which acts as a bridge betwee...

Страница 168: ...of Ethernet is 10 Mbps the bandwidth of Fast Ethernet is 100 Mbps The bandwidth for 802 11b wireless is 11Mbps Category 3 Cables One of five grades of Twisted Pair TP cabling defined by the EIA TIA 586 standard Category 3 is voice grade cable and can only be used in Ethernet networks 10BASE T to transmit data at speeds of up to 10 Mbps Category 5 Cables One of five grades of Twisted Pair TP cablin...

Страница 169: ...uters on your home network is the location of the DNS server your ISP has assigned DSL modem DSL stands for digital subscriber line A DSL modem uses your existing phone lines to send and receive data at high speeds Encryption A method for providing a level of security to wireless data transmissions The Router uses two levels of encryption 40 64 bit and 128 bit 128 bit is a more powerful level of e...

Страница 170: ...P networks In the network management area this group is responsible for the development of the SNMP protocol Infrastructure mode Infrastructure mode is the wireless configuration supported by the Router You will need to ensure all of your clients are set up to use infrastructure mode in order for them to communicate with the Access Point built into your Router see also Ad Hoc mode IP Internet Prot...

Страница 171: ...dress Also called the hardware or physical address A Layer 2 address associated with a particular network device Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network MAC addresses are 6 bytes long NAT Network Address Translation NAT enables all the computers on your network to share one IP address The NAT capability of the R...

Страница 172: ...omputer files and printer queues SSID Service Set Identifier Some vendors of wireless products use SSID interchangeably with ESSID Subnet Address An extension of the IP addressing scheme that allows a site to use a single IP network address for multiple physical networks Subnet Mask A subnet mask which may be a part of the TCP IP information provided by your ISP is a set of four numbers configured...

Страница 173: ...RL Filter A URL Filter is a feature of a firewall that allows it to stop its clients form browsing inappropriate Web sites WAN Wide Area Network A network that connects computers located in geographically separate areas for example different buildings cities or countries The Internet is an example of a wide area network WDS Wireless Distribution System WDS enables one or more access points to rebr...

Страница 174: ...ce Set Identifier Wizard A Windows application that automates a procedure such as installation or configuration WLAN Wireless Local Area Network A WLAN is a group of computers and devices connected together by wireless in a relatively small area such as a house or office WPA Wi Fi Protected Access A dynamically changing encryption mechanism for wireless networking Encryption strength is 256 bit ...

Страница 175: ...his equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning t...

Страница 176: ...also compliant See installation instructions for details If your equipment causes harm to the telephone network the telephone company may discontinue your service temporarily If possible they will notify you in advance But if advance notice is not practical you will be notified as soon as possible You will be informed of your right to file a complaint with the FCC Your telephone company may make c...

Страница 177: ...radiator your body This transmitter must not be co located or operating in conjunction with any other antenna or transmitter 2 4GHz operation of this product in Canada is firmware limited to channels 1 through 11 INDUSTRY CANADA EMISSIONS COMPLIANCE STATEMENT This Class B digital apparatus complies with Canadian ICES 003 AVIS DE CONFORMITÉ À LA RÉGLEMENTATION D INDUSTRIE CANADA Cet appareil numéri...

Страница 178: ...RLAN device cumple con los requisitos esenciales y cualesquiera otras disposiciones aplicables o exigibles de la Directiva 1999 5 CE Ελληνική Greek ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ 3Com Corporation ΔΗΛΩΝΕΙ ΟΤΙ RLAN device ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ ΔΙΑΤΑΞΕΙΣ ΤΗΣ ΟΔΗΓΙΑΣ 1999 5 ΕΚ Français French Par la présente 3Com Corporation déclare que l appareil RLAN device est conforme...

Страница 179: ...ent Nos 6694470 6735245 6751254 6765957 6768772 6873652 6901547 6917647 6934326 6950459 6952442 6987802 6999506 7012954 7051258 7058123 and 7272173 Malti Maltese Hawnhekk 3Com Corporation jiddikjara li dan RLAN device jikkonforma mal htigijiet essenzjali u ma provvedimenti ohrajn relevanti li hemm fid Dirrettiva 1999 5 EC Magyar Hungarian Alulírott 3Com Corporation nyilatkozom hogy a RLAN device m...

Страница 180: ...178 ...

Страница 181: ... icons About This Guide 8 text About This Guide 8 D DDNS 70 DHCP 87 DHCP Clients List 42 DHCP server 25 42 disabling 26 DMZ Screen 67 DNS 24 DNS Screen 55 DSL mode 29 Dynamic Domain Server DDNS Screen 70 Dynamic IP Address 34 Dynamic Fixed IP for Bridge Mode Screen 35 55 DYNDNS 70 E Editing DHCP Clients List Screen 42 Encryption Screen 44 Encryption disabling 45 F Firewall Screen 59 Forgotten Pass...

Страница 182: ...ng Table Screen 59 S Schedule Rule Screen 65 Setup Wizard 27 SNMP Community Screen 71 SNMP Trap Screen 72 Special Applications Screen 60 Specifications technical 89 SSID 31 32 33 35 36 43 Static Addressing 87 Static Route Parameters Screen 57 Status Screen 28 40 Subnet Mask 85 T TCP IP 23 25 85 Technical specifications 89 standards 89 Time and Time Zone screen 76 TZO com 70 U Universal Plug and Pl...

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