User Guide Wireless Access Point WA840G
WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS PRODUCT TO RAIN OR MOISTURE. THE UNIT MUST NOT BE EXPOSED TO DRIPPING OR SPLASHING. DO NOT PLACE OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ON THE UNIT. CAUTION: TO ENSURE REGULATORY COMPLIANCE, USE ONLY THE PROVIDED POWER AND INTERFACE CABLES. CAUTION: DO NOT OPEN THE UNIT. DO NOT PERFORM ANY SERVICING OTHER THAN THAT CONTAINED IN THE INSTALLATION AND TROUBLESHOOTING INSTRUCTIONS. REFER ALL SERVICING TO QUALIFIED SERVICE PERSONNEL.
Canadian Compliance This Class B digital apparatus meets all requirements of the Canadian Interference Causing Equipment Regulations. Cet appareil numérique de la classe B respects toutes les exigences du Règlement sur le matériel brouilleur du Canada. FCC Declaration of Conformity Motorola, Inc.
Contents Section 1:Overview Features ................................................................................................................ 1-3 Understanding Your User Guide ......................................................................... 1-4 Box Contents ........................................................................................................ 1-5 Wireless Connections ..........................................................................................
CONTENTS Configure Your Wireless Security Settings ......................................................2-19 Logging In .........................................................................................................2-19 Wireless Security Setup ....................................................................................2-20 Section 3:Configuration Using the Web-Based Configuration Utility ........................................................3-1 Logging In .............................
Section 1:Overview Congratulations on purchasing the Motorola Wireless Access Point WA840G. With the WA840G, you can network with everyone in your home or small office — wirelessly. The centerpiece of a user-friendly wireless network, the WA840G is a capable of providing data rates up to 54 Mbps, which is nearly 5 times faster than 802.11b networking. Using the WA840G, you can effortlessly share files, pictures, peripherals, printers and more with everyone else on the network.
SECTION 1 OVERVIEW Wireless Access Point WA840G Your wireless access point offers these great features: Wireless Connectivity Connects your PC to your wireless network and allows you to communicate unfettered. Using the 802.11g and 802.11b wireless communication standards will ensure compliance with current and future standards. Secure Transmission Protection against Internet intruders is crucial.
OVERVIEW SECTION 1 Your Motorola Wireless Access Point WA840G connects and protects you. Built-in security coupled with upgradeable firmware ensures your access point will work for you for years to come. A Word about Data Rates: Data rate is the speed at which individual bits of data flow through a channel. It is not the same speed at which entire files are uploaded or downloaded. These speeds will vary, and are often less than the maximum data rate.
SECTION 1 OVERVIEW Understanding Your User Guide The User Guide is divided into the following sections: Overview Describes the access point and its functions, the technology used, and the recommended methods for positioning the access point. Installation It is assumed that you will use the Installation Wizard on the CD-ROM to setup your access point. If not, refer to this section for instructions on getting your access point up and running.
OVERVIEW SECTION 1 Box Contents Your box contains the following: Antenna Ethernet Cable CD-ROM Base Station Stand WA840G Power Supply Quick Start Guide Wireless Connections Before installing your wireless access point, please take a few minutes to review the wireless networking functions described in this section. Access Point Generally, access points wirelessly connect networks together, such as your network with the Internet.
SECTION 1 OVERVIEW TCP/IP Transmission Control Protocol/Internet Protocol (TCP/IP) comprises the backbone of the Internet. IP moves packets of data between nodes while TCP verifies delivery from client to server. The device you hook up to your wireless access point will identify itself with an IP address so that the network will know where to retrieve and deposit requested information. Static IP Address A static IP address is a fixed address that is assigned manually to a device on the network.
OVERVIEW SECTION 1 Positioning Your Access Point To achieve the best wireless performance, review these guidelines before deciding where to place your access point: ! Placing your base station in the physical center of your network is the best location because the antenna sends out the signal in all directions. ! Placing the access point in a higher location, such as on top of a cabinet, helps to disperse the signal cleanly, especially to receiving locations on upper stories.
SECTION 1 OVERVIEW Technical Specifications Your wireless access point uses a radio transmission technology defined by the Institute of Electrical and Electronics Engineers (IEEE) called 802.11 or Wi-Fi (Wireless Fidelity). This standard is subdivided into distinct categories of speed and the frequency spectrum used, designated by the lower case letter after the standard. For example, your access point supports both the ‘b’ and ‘g’ specifications. The 802.
OVERVIEW SECTION 1 Type of Networks Your access point can be used in several ways. The following examples illustrate the flexibility of your WA840G. Some examples require additional hardware. Access Point Mode In this mode, the WA840G connects wireless clients to a wired Ethernet network. This example shows the most likely use for the access point, because it shares an Internet connection with your laptop or other wireless client.
SECTION 1 OVERVIEW Access Point Physical Description The following sections describe the physical characteristics of your access point. For instructions on installing your access point, see Section 2: Installation. Back of Access Point The following illustration shows the WA840G back panel: Reset Power Power Receptacle 1-10 LAN LAN Port Antenna Reset Antenna Button Feature Description Power Receptacle The receptacle where you plug in the power adapter.
OVERVIEW SECTION 1 Feature Description Reset Button Resets your access point or resets the access point to the default login settings. If the access point experiences trouble connecting to the Internet, briefly press and release the Reset button to reset the access point. This retains the access points configuration information. To reset the access point to the factory defaults, while the access point is powered, press and hold the Reset button for more than 5 seconds.
SECTION 1 OVERVIEW LED Description The underlined items represent network activity. LED 1 Power Condition Color Status ON Green The device is powered on and operating normally. Blinking Green Firmware update is in progress. Blinking/ON Red 2 Wireless OFF None No mobile station or access point has been associated with this device. ON Red The wireless interface has been disabled by the firmware. ON/Blinking Green 3 Device The power LED turns RED as soon as the reset button is depressed.
Section 2:Installation To get your network up and running: ! Set up your hardware. ! Insert the CD-ROM for Software Setup. Follow the prompts. If you prefer to set up the access point’s software manually, refer to the Manual Software Setup found in this section. The following sections provide detailed instructions for completing these tasks. Hardware Setup Hardware setup includes: ! Antenna Installation: verifying the antenna is connected to the access point.
SECTION 2 INSTALLATION 3 To reattach the antenna, screw the antenna connector clockwise on to the threaded knob until firmly seated. Do not overtighten. Access Point Physical Installation You can install the access point horizontally or vertically. The access point can also be mounted on a wall. Horizontal Installation 1 2-2 Place the access point in the desired location and follow the procedures below for connecting and configuring the access point.
INSTALLATION SECTION 2 Vertical Installation 1 Insert the access point into the supplied base. Ensure that the antenna’s location is on top. The access point’s foot slides snugly into the base to keep the access point stable. 2 Follow the installation procedures for connecting and configuring the access point.
SECTION 2 INSTALLATION To mount your access point on the wall: 1 Print the Wall Mounting Template shown on this page: 3.15” [80.
INSTALLATION SECTION 2 2 Click the Print icon or choose Print from the File menu to display the Print dialog box: In both the Pages from and to fields, enter the page number on which the Wall Mounting Template appears. Be sure you print the template at 100% scale and that Fit to page is not checked in the Print dialog box. 3 Click OK. 4 Measure the printed template with a ruler to ensure that it is the correct size. 5 Use a center punch to mark the center of the holes on the wall.
SECTION 2 INSTALLATION 8 If necessary, seat an anchor in each hole. Use M5 x 38 mm (#10-16 x 1½ inch) screws with a flat underside and maximum screw head diameter of 10.5 mm to mount the access point. 9 Using a screwdriver, turn each screw until part of it protrudes from the wall, as shown: ! There must be 4.0 mm (.16 inches) between the wall and the underside of the screw head. ! The maximum distance from the wall to the top of the screw head is 7.6 mm (.3 in). 7.6 mm (.3 inches) maximum 10.5 mm (.
INSTALLATION SECTION 2 Electrical Connection to Access Point Your access point does not have an On/Off power switch and therefore will only be powered on by plugging in the power adapter. Use only the original power adapter supplied with your access point. To power supply 1 Connect the power adapter to the access point’s Power port, found on the back of the access point. 2 Plug the power adapter into a grounded and surge-protected power outlet.
SECTION 2 INSTALLATION Manual Software Setup If you’d prefer to manually set up your network, use this section to configure it. This section details the physical connection of the access point to your network as well as the configuration needed by your PC.
INSTALLATION SECTION 2 Wireless Connection to Access Point WARNING! When first configuring your access point, it is recommended that use an Ethernet cable. Performing the INITIAL configuration using a wireless connection is not secure and is not recommended. After you have finished the initial configuration of the access point, your connection will be secure and you can safely use either a wired or wireless connection.
SECTION 2 INSTALLATION MODEL WA840G INPUT VOLTAGE: +5VDC, 2A FCC ID: F2NWA840G PART NUMBER: AAAAAA-BBB-CC S/N: PPPPMMYJJJSSSSSCAABBCCCC MODEL: WA840G Tested To Comply With FCC Standards WIRELESS MAC: AB CD EF 01 23 45 FOR HOME OR OFFICE USE MADE IN TAIWAN MODEL WA840G INPUT VOLTAGE: +5VDC, 2A FCC ID: F2NWA840G PART NUMBER: AAAAAA-BBB-CC S/N: PPPPMMYJJJSSSSSCAABBCCCC MAC address MODEL: WA840G Tested To Comply With FCC Standards WIRELESS MAC: AB CD EF 01 23 45 FO R HOM E OR OF FICE U SE MADE IN
INSTALLATION SECTION 2 Configuring Windows 98SE and ME WA840G 1 Click Start. 2 Select Settings > Control Panel. 3 Double-click Network. The Network window is displayed: 4 On the Configuration tab, select the TCP/IP line the for the appropriate Ethernet adapter on your PC. There may be multiple adapters installed – choose only the one that is configured for your adapter. In the example above, a 3Com Ethernet adapter card is installed and is the appropriate choice.
SECTION 2 INSTALLATION 5 Click Properties. The TCP/IP Properties window is displayed: 6 Click the IP Address tab. 7 Enter 192.168.40.10 in the IP Address field. 8 Enter 255.255.255.0 in the Subnet Mask field. 9 Click OK. 10 Click the Gateway tab and confirm that the Installed Gateway field is blank. 11 Click OK twice. Windows may ask for the Windows Installation disk. First check to see if the installation files are installed at c:\windows\options\cabs.
INSTALLATION SECTION 2 Configuring Windows 2000 WA840G 1 Click Start. 2 Select Settings. 3 Select Control Panel. 4 Double-click Network and Dial-Up Connections. 5 Double-click Local Area Connection. 6 Click Properties.
SECTION 2 2-14 INSTALLATION 7 Ensure the box next to Internet Protocol (TCP/IP) is selected. 8 Click to highlight Internet Protocol (TCP/IP) and click Properties.
INSTALLATION SECTION 2 9 Enter 192.168.40.10 in the IP Address field. 10 Enter 255.255.255.0 in the Subnet Mask field. 11 Click OK twice. 12 Restart your computer to save your settings. 13 Proceed to the Configure Your Wireless Settings section to set up the security settings.
SECTION 2 INSTALLATION Configuring Windows XP This configuration assumes you have retained the default interface for Windows XP. If you are running the ‘Classic’ interface, please follow the instructions for Windows 2000. 2-16 1 Click Start. 2 Select Settings. 3 Select Control Panel. 4 Double-click Network and Dial-Up Connections. 5 Double-click Local Area Connection. The Local Area Connection Status window appears: 6 Click Properties.
INSTALLATION SECTION 2 7 WA840G Ensure the box next to Internet Protocol (TCP/IP) is selected.
SECTION 2 INSTALLATION 8 Click to highlight Internet Protocol (TCP/IP) and click Properties. 9 Enter 192.168.40.10 in the IP Address field. 10 Enter 255.255.255.0 in the Subnet Mask field. 11 Click OK twice. 12 Restart your computer to save your settings. 13 Proceed to the Configure Your Wireless Settings section to set up the security settings.
INSTALLATION SECTION 2 Configure Your Wireless Security Settings Before your access point can communicate securely with your computer, you must configure your wireless security settings. Failure to configure these settings properly could compromise your network to wireless hackers. Logging In WARNING! When first configuring your access point, it is recommended that you use an Ethernet cable. Performing the INITIAL configuration using a wireless connection is not secure and is not recommended.
SECTION 2 INSTALLATION 2 Enter the User ID. The default factory setting is admin. 3 Enter the Password. The default factory setting is motorola. Once you have logged in, for security reasons, you should change the User ID and Password. See Wireless Security Setup. 4 Click Log In to enter the access point’s Web-based Configuration Utility. Wireless Security Setup To set up the correct security protocols for your access point: 1 Select Control Panel > Device Security.
Section 3:Configuration Use the information in this section to modify the access point’s settings. For example you can customize features for your home network, change settings such as your user name or password, or view the status of the network. The screenshots seen here are intended for reference only; your version of firmware may differ slightly. Using the Web-Based Configuration Utility Logging In 1 Once the access point is connected, open your web browser. In the URL field, enter http://192.168.40.
SECTION 3 CONFIGURATION 2 Enter the User ID. The default factory setting is admin. 3 Enter the Password. The default factory setting is motorola. After you have logged in, for security reasons you should change the User ID and Password. See below. 4 Click Log In to enter the access point’s Configuration Utility. Navigation Each of the following subsections describe the components of the access point’s Configuration Utility, which is accessible from a web browser.
CONFIGURATION SECTION 3 Configuring Wireless Network Settings The Wireless Network screens allow you to adjust settings for your wireless connection: ! Basic ! Security ! Site Monitor ! Advanced Basic Wireless Configuration The Wireless – Basic screen allows you to set up your Service Set Identifier (SSID) parameters for your network. The SSID is the name of your network that is shared among all the devices in a wireless network.
SECTION 3 CONFIGURATION Field or Button Description Channel Number Identifies the channel on which the access point communicates. Each wireless client must use the same channel to enable communication. If changed wirelessly, once you restart the access point, you will lose your wireless connection. Change the wireless device’s channel to the new channel to log back into the access point. The default is Channel 11.
CONFIGURATION SECTION 3 Configuring Wireless Security Settings The Wireless Security screen allows you to configure wireless security settings. To access the screen, click Wireless > Security. WA840G Field Description SSID Broadcast Service Set Identifier (SSID). Broadcasts the SSID of the access point to devices on your network. This enables wireless clients, such as a laptop, to receive the access point’s SSID. If you don’t want the SSID to be broadcast, disable this feature.
SECTION 3 CONFIGURATION Field Description ESS Authentication Extended Service Set (ESS). Authentication establishes either an open or secure verification of communication with an access point. This setting does not encrypt your wireless transmission. The options are: Open System No authentication is used. Default setting. Pre-Shared Key (PSK) The Pre-Shared Key (PSK) authentication method is used. WPA Wi-Fi® Protected Access (WPA) authentication (802.1X) is used with an EAP type.
CONFIGURATION SECTION 3 Field Description Encryption Status Determines the type of security encryption algorithms used for the Key. This security setting encrypts your wireless transmission. None, WEP64, and WEP128 are available only when Open System or Pre-Shared KEY (PSK) is selected in the ESS Authentication field. ! TKIP and AES are available only when WPA and WPA-PSK are selected in the ESS Authentication field. The options are: ! None No security. Default setting.
SECTION 3 CONFIGURATION Field Description Key Input Method Available if PSK and/or WEP is selected. The options are: ! Pass Phrase – default setting ! Hexadecimal ! ASCII If you select either Pass Phrase or Hexadecimal, in Key Content, the format of the Key appears in a hexadecimal format. If you are using other non-Motorola wireless products and a security algorithm other than WPA-PSK, you must enter your WEP keys manually in either ASCII or hexadecimal format for the non-Motorola wireless products.
CONFIGURATION SECTION 3 Field Description Key Index Use the drop-down list here to select one of the Key Content fields below (Key 1, Key 2, etc). A maximum of four different Keys (1, 2, 3, or 4) are available, the number of keys is determined by what is selected in the ESS Authentication and Encryption Status field. The Key selected here must match the Key in the client. For example, if you select Key 1 here you have to select Key 1 for the client. The default is 1.
SECTION 3 CONFIGURATION Field Description Group Key Renewal Interval This is the number of seconds that pass until your access point sends out a new group key and is only available if WPA or 802.1X are selected. The default is 300 seconds. RADIUS Server IP Enter the RADIUS Server IP and Port number. RADIUS is an authentication and accounting system to verify users.
CONFIGURATION SECTION 3 Field Description Wireless MAC Access Control List Enables you to control which device accesses your wireless network based upon their MAC address. The default is disabled. The options are: Enable Select to enable/disable the MAC Access Control List (ACL). When disabled, the MAC ACL is not active and any wireless station is allowed to communicate with the wireless access point. Allow Allows only the wireless devices in the ACL to communicate with the wireless access point.
SECTION 3 CONFIGURATION Field Description Learned MAC Addresses Displays the MAC addresses (wireless devices only) the access point has already recorded. Apply If you wish to use one of the displayed MAC addresses, click the address number. The number automatically appears in the Wireless MAC Address Control List. ! Click Refresh to search for additional MAC addresses. Click to save your settings. Cancel Click to cancel any changes.
CONFIGURATION Field SECTION 3 Description Station Association List Refresh Click to refresh the Station Association List. MAC Address Displays the MAC address of clients found on the LAN. Host Name Displays the name of the device attached. Site Survey WA840G Scan Click to search for more access points or clients. SSID Displays the SSID of the device found. MAC Address Displays the MAC address of the device found. Channel Displays the channel upon which the device is broadcasting.
SECTION 3 CONFIGURATION Advanced Wireless Configuration The Wireless-Advanced screen allows you to turn your wireless network off and on and adjust wireless parameters. Generally, these settings should remain at their default values. To access the screen, click Wireless > Advanced. Field Description Radio Interface Allows you to turn on and off the wireless feature. The default is enabled. Short Preamble Improves the efficiency of a network's throughput when transmitting and receiving data.
CONFIGURATION SECTION 3 Field Description RTS Threshold Allows you to modify the RTS threshold, which is the packet size at which an access point issues a request to send (RTS). The range is 0 to 2347 bytes. The default is 2347. Fragmentation Threshold Allows you to set the size at which packets are fragmented and transmitted a piece at a time instead of all at once. The setting must be within the range of 256 to 2346 bytes. The default is 2346.
SECTION 3 CONFIGURATION Field Description Basic Rate Set Allows you to set the transmission rate. The access point broadcasts different transmission rates so clients know which transmission rate to use to join the network. The options are: 11g Protection Mode 1 to 2 Mbps The slowest speed available. Default Ensures compatibility with 802.11b or 802.11g devices All Ensures compatibility with all devices. Ensures that your wireless access point does not interfere with neighbor networks. 802.
CONFIGURATION SECTION 3 Field Description WDS Restrict Mode Protects your network by assigning access to only the access points you designate. Assign the access points’ MAC addresses in the WDS Restrict MAC Addresses fields. The default is enabled. WDS Restrict MAC Addresses To activate these fields, WDS Restrict Mode must be enabled.
SECTION 3 CONFIGURATION Configuring Network Address This screen allows you to change your Connection Mode and IP settings. To access the screen, click Control Panel > Network Access. Field Description LAN Ethernet MAC Address Displays the unit’s Ethernet MAC address. Connection Mode The access point supports two connection modes for acquiring its own IP configuration settings: ! DHCP ! Static Assigned Select the appropriate connection mode for your network.
CONFIGURATION SECTION 3 Field Description Subnet Mask Displays the access point’s Subnet Mask address used to connect to your network. If DHCP is selected, this is the Subnet Mask Address that your access point is currently using to access the Internet. If using Static Assigned, enter the Subnet Mask Address here. Gateway IP Displays the access point’s Gateway IP Address used to connect to your network.
SECTION 3 CONFIGURATION Field Description Login Password Use this option to change the Password used to log into the access point’s web based utility. It cannot be longer than 63 bytes. A blank password is not allowed. The default is motorola. Login Password Confirm Login Idle Time Sets the amount of idle time (no actions occur) that elapses before the access point automatically logs you off. The default is 10 minutes. Apply Click to save your settings. Cancel Click to cancel any changes.
CONFIGURATION SECTION 3 Saving and Restoring Configuration Settings The Configuration Data screen allows you to save and restore your access point’s configuration settings. You are also able to reset the access point to its factory default settings. To access the screen, click Control Panel > Configuration Data. To reset the access point to its original configuration; click FACTORY DEFAULTS. To backup your settings: 1 Click BACKUP. 2 From the pop up window, choose the destination for the file.
Section 4:Troubleshooting This section details possible solutions to common problems that may occur in using the access point. Contact If you are unable to locate a solution here, please access our website at www.motorola.com/broadband/networking for the latest information. You can also reach us 7 days a week, 24 hours a day at 1-877-466-8646. Hardware Solutions My computer is experiencing difficulty connecting to the wireless network.
SECTION 4 TROUBLESHOOTING My computer is experiencing difficulty in connecting to the access point. ! Ensure that all of your cable connections are firmly connected. This includes the cables from the wall to your modem, between the router and modem, and, if available, from the access point to your PC. ! Ensure that your LEDs are not lit Red or not at all. For further information about LED descriptions, see Section 1: Overview.
TROUBLESHOOTING SECTION 4 Software Solutions I would like to see if my Internet connection is live. Use the ping command to test the connection. Before attempting, ensure that Obtain an IP address automatically has been selected in the computer’s settings and that you have an IP address assigned. Refer to Configure Your Computers in Section 2: Configuration, for further details. 1 Open a command prompt by clicking Start and Run.
SECTION 4 TROUBLESHOOTING ! If you receive a reply (For example: Reply from 216.109.125.72…), then your connection to the Internet is live. You can verify the ISP’s IP address at the Gateway IP field on the Control Panel > Network Access screen. ! 6 If you do NOT receive a reply, repeat steps 1 – 5 on a different computer to verify that the first computer is not the cause of the problem. If you cannot determine your ISP’s default gateway, ping www.yahoo.com or another known web location.
TROUBLESHOOTING SECTION 4 What if Pass Phrase isn’t supported? What do I enter for my security? Some wireless cards do not support Pass Phrase or Motorola’s Pass Phrase algorithm, which means you have to enter the entire Key Content found in the appropriate Key field. So, using the WEP example from above if using Key 1, you would enter 03F32226A…etc. into the Network Key field of the example Network Adapter, seen below. Ensure that the Key index matches what is selected on the wireless network.
SECTION 4 TROUBLESHOOTING I cannot browse past the first screen of the Configuration Utility. Sometimes, especially when upgrading, some leftover files may be in your Internet Cache. Flush your cache and restart your unit to fix: From Internet Explorer’s menu, select Tools > Options and click Delete Files to clear you cache.
Section 5:Glossary A Access Point (AP) A device that provides wireless LAN connectivity to wireless clients (stations). Adapter A device or card that connects a computer, printer, or other peripheral device to the network or to some other device. A wireless adapter connects a computer to the wireless LAN. Address translation See NAT. Ad-Hoc Network A temporary local area network connecting AP clients together, usually just for the duration of the communication session.
SECTION 5 GLOSSARY BSS Basic Service Set. A configuration of Access Points that communicate with each other without resorting any infrastructure. Also known as Ad-Hoc networks. Also see ESS. C Client In a client/server architecture, a client is a computer that requests files or services such as file transfer, remote login, or printing from the server. On an IEEE 802.11b/g wireless LAN, a client is any host that can communicate with the access point. Also called a CPE.
GLOSSARY SECTION 5 DNS The Domain Name System is the Internet system for converting domain names (like www.motorola.com) to IP addresses. A DNS server contains a table matching domain names such as Internetname.com to IP addresses such as 192.169.9.1. When you access the world-wide web, a DNS server translates the URL displayed on the browser to the destination website IP address. The DNS lookup table is a distributed Internet database; no one DNS server lists all domain name to IP address matches.
SECTION 5 GLOSSARY E ESS An Extended Service Set (ESS) is a set of two or more BSSs that form a single subnetwork. See also BSS. Ethernet The most widely used LAN type, also known as IEEE 802.3. The most common Ethernet networks are 10Base-T, which provide transmission speeds up to 10 Mbps, usually over unshielded, twisted-pair wire terminated with RJ-45 connectors. Fast Ethernet (100Base-T) provides speeds up to 100 Mbps. “Base” means “baseband technology” and “T” means “twisted pair cable.
GLOSSARY SECTION 5 H Hexadecimal A base-sixteen numbering system that uses sixteen sequential numbers (0 to 9 and the letters A to F) as base units before adding a new position. On computers, hexadecimal is a convenient way to express binary numbers. Host In IP, a host is any computer supporting end-user applications or services with full two-way network access. Each host has a unique host number that combined with the network number forms its IP address.
SECTION 5 GLOSSARY IP Address A unique 32-bit value that identifies each host on a TCP/IP network. TCP/IP networks route messages based on the destination IP address. For a Class C network, the first 24 bits are the network address and the final 8 bits are the host address; in dotted-decimal format it appears “network.network.network.host.” ISDN Integrated Services Digital Network ISP Internet Service Provider L LAN Local Area Network.
GLOSSARY SECTION 5 Multicast A data transmission sent from one sender to multiple receivers. See also broadcast and unicast. N NAT Network Address Translation is an Internet standard for a LAN to use one set of IP addresses for internal traffic and a second set of IP addresses for external traffic. NAT provides some security because the IP addresses of LAN computers are invisible on the Internet. Network Two or more computers connected to communicate with each other.
SECTION 5 GLOSSARY PPP Point-to-Point Protocol is used to transport other protocols, typically for simple links over serial lines. It is most commonly used to access the Internet with a dial-up modem. PPPoE Point-to-Point Protocol over Ethernet. Used by many DSL Internet Service Providers for broadband connection. PPTP Point-to-Point Tunneling Protocol encapsulates other protocols. It is a new technology to create VPNs developed jointly by several vendors.
GLOSSARY SECTION 5 Router On IP networks, a device connecting at least two networks, which may or may not be similar. A router is typically located at a gateway between networks. A router operates on OSI network layer 3. It filters packets based on the IP address, examining the source and destination IP addresses to determine the best route on which to forward them. A router is often included as part of a network switch. A router can also be implemented as software on a computer.
SECTION 5 GLOSSARY Switch On an Ethernet network, a switch filters frames based on the MAC address, in a manner similar to a bridge. A switch is more advanced because it can connect more than two segments. T TCP Transmission Control Protocol on OSI transport layer four, provides reliable transport over the network for data transmitted using IP (network layer three). It is an end-to-end protocol defining rules and procedures for data exchange between hosts on top of connectionless IP.
GLOSSARY SECTION 5 USB Universal Serial Bus is a computer interface for add-on devices such as printers, scanners, mice, modems, or keyboards. USB 1.1 supports data transfer rates of 12 Mbps and plug-and-play installation. You can connect up to 127 devices to a single USB port. USB 2.0 supports data rates of 480 Mbps. V VoIP Voice over Internet Protocol is a method to exchange voice, fax, and other information over the Internet.
SECTION 5 GLOSSARY WLAN Wireless LAN. WPA Wi-Fi Protected Access. A security regimen developed by IEEE for protection of data on a WLAN. WWW World Wide Web. An interface to the Internet that you use to navigate and hyperlink to information.
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