Linksys AG241 manuale d’uso

A Division of Cisco Systems, Inc . ® Model No . WIRED with 4-Port Switch ADSL2 Gatew a y AG 2 4 1 User Guide[...]

ADSL2 Gatewa y with 4-Port Switch Copyright and T rademarks Specifications are subject to change without notice . L inksys is a registered tradema rk or trademark of Cisco Systems, Inc . and/or its affiliates in the U.S . and certain other countries. Copyright © 2004 Cisco Systems, Inc. All rights reserved. Other brands and product names are trade[...]

ADSL2 Gateway with 4-P ot Switch Table of Contents Chapter 1: Introduction 1 Welcome 1 What’s in this Guide? 2 Chapter 2: Planning Your Network 4 The Gateway’s Functions 4 IP Addresses 4 What is a VPN? 5 Why do I need a VPN? 6 Chapter 3: Getting to Know the ADSL2 Gateway with 4-Port Switch 8 The Back Panel 8 The Front Panel 9 Chapter 4: Connect[...]

10/100 8-P ort VPN Router List of Figures Figure 2-1: Network 4 Figure 2-2: Computer-to-VPN Gateway 6 Figure 2-3: VPN Gateway-to-VPN Gateway 7 Figure 3-1: Back Panel 8 Figure 3-2: Front Panel 9 Figure 4-1: Ethernet Connection 11 Figure 4-2: ADSL Connection 11 Figure 4-3: Power Connection 11 Figure 5-1: Password Screen 15 Figure 5-2: Basic Setup Tab[...]

10/100 8-P ort VPN Router Figure 5-21: Internet Policy Summary 27 Figure 5-22: List of PCs 28 Figure 5-23: Port Services 28 Figure 5-24: Single Port Forwarding 29 Figure 5-25: Port Range Forwarding 29 Figure 5-26: Port Triggering 30 Figure 5-27: DMZ 30 Figure 5-28: QOS 31 Figure 5-29: Management 32 Figure 5-30: Reporting 33 Figure 5-31: System Log [...]

10/100 8-P ort VPN Router Figure B-11: Filter Acton Tab 57 Figure B-12: Security Methods Tab 57 Figure B-13: Authentication Methods 58 Figure B-14: Preshared Key 58 Figure B-15: New Preshared Key 58 Figure B-16: Tunnel Setting Tab 59 Figure B-17: Connection Type Tab 59 Figure B-18: Properties Screen 59 Figure B-19: IP Filter List Tab 60 Figure B-20[...]

1 Chapter 1: Introductio n Welcome ADSL2 Gatewa y with 4-Port Switch Chapter 1: Introduction We lc o me The Linksys ADSL2 Gateway with 4-Port Switch is the all-in-one solution for Internet connectivity in your home. The ADSL Modem function gives you a blazing fast connec tion to the Inter net, far faster than a dial-up, and without tying up your ph[...]

2 Chapter 1: Introductio n What’s in this Guide? ADSL2 Gatewa y with 4-P ort Switch What’ s in this Gu ide? This user guide covers the steps for setting up and using the ADSL2 Gateway with 4-Port Switch. • Chapter 1: Introduction This chapter describes the ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch applications and this[...]

3 Chapter 1: Introductio n What’s in this Guide? ADSL2 Gatewa y with 4-P ort Switch • Appendix G: Warr anty Information This appendix supplies the warranty information for the Gateway . • Appendix H: Regulator y Information This appendix supplies the regulator y information regarding the Gateway . • Appendix I: Contact Information This appe[...]

4 Chapter 2: Planning Your Ne twork The Gateway’s Functions ADSL2 Gatewa y with 4-P ort Switch Chapter 2: Planning Y our Network The Gatewa y’ s Functions A Gateway is a network device that connects two networks together . In this instance , the Gateway connects your Local Area Ne twork (LAN), or the group of computers in your home or office , [...]

5 Chapter 2: Planning Your Ne twork What is a VPN? ADSL2 Gatewa y with 4-P ort Switch Since you use the Gateway to share your DSL Internet connection, contact your ISP to find out if they have assigned a static IP address to your account. If so, you will need that static IP address when configuring the Gateway . Y ou can get that informa tion from [...]

6 Chapter 2: Planning Your Ne twork Why do I need a VPN? ADSL2 Gatewa y with 4-P ort Switch telecommuters, and/or professionals on the road (traveler s can connect to a VPN Gateway using any computer with VPN client software that supports IPSec , such as SSH Sentinel.) There are two basic w ays to create a VPN connection: • VPN Gateway to VPN Gat[...]

7 Chapter 2: Planning Your Ne twork Why do I need a VPN? ADSL2 Gatewa y with 4-P ort Switch protect data inside of a local network. But what do you do once information is sent outside of your local network, when emails are sent to their destination, or when you have to connect to your company's network when you are out on the road? How is your[...]

8 Chapter 3: Getting to Kn ow the ADSL2 Gateway with 4-Port Switch The Back Panel ADSL2 Gatewa y with 4-Port Switch Chapter 3: Getting to Know the ADSL2 Gateway with 4- Por t Switch The Back P anel The Gateway’ s ports, where a network cable is connected, are located on the back panel. The Gateway’ s buttons are also located on the back panel. [...]

9 Chapter 3: Getting to Kn ow the ADSL2 Gateway with 4-Port Switch The Front Panel ADSL2 Gatewa y with 4-P ort Switch The Front P anel The Gateway's LEDs, where information about network activity is displayed, are located on the front panel. Po w e r Green. The P ower LED lights up when the Gateway is powered on. Ethernet (1-4) Green. The LAN [...]

10 Chapter 4: Connecting the ADSL 2 Gateway with 4-Port Switch Overview ADSL2 Gatewa y with 4-P ort Switch Chapter 4: Connecting the ADSL2 Gateway with 4-Por t Switch Overview The Gateway’ s setup consists of more than simply plugging hardware together . Y ou will have to configure your networked computers to accept the IP addresses that the Gate[...]

11 Chapter 4: Connecting the ADSL 2 Gateway with 4-Port Switch Connection to a Computer ADSL2 Gatewa y with 4-P ort Switch 4. Connect a phone cable from the Line port on the Gateway’s bac k panel (see Figure 4-2) to the wall jack of the ADSL line . A small device ca lled a microfilter may be n ecessary between each phone and wall jack to prevent [...]

13 Chapter 5: Configuring th e Gateway Overview ADSL2 Gatewa y with 4-P ort Switch Chapter 5: Configuring the Gateway Overview Follow the steps in this chapter and use the Gateway’ s w eb-based utility to configure the Gateway . This chapter will describe each web page in the Utility and each page’ s key functions. The utility can be accessed v[...]

14 Chapter 5: Configuring th e Gateway Overview ADSL2 Gatewa y with 4-P ort Switch Applications & Ga ming • Single Port Forwarding. Use this screen to set up common services or applications on your network. • Port Range Forwarding. T o set up public services or ot her specialized Internet applications on your network, click this tab . • P[...]

15 Chapter 5: Configuring th e Gateway How to Access the Web-based Utility ADSL2 Gatewa y with 4-P ort Switch How to Access the W eb-based Utility T o access the web-base d utility , launch Internet Explorer or Netscape Navigator , and enter the Gateway’ s default IP address, 192.168.1.1, in the Address field. Then press Enter . A password reques[...]

16 Chapter 5: Configuring th e Gateway The Setup Tab ADSL2 Gatewa y with 4-P ort Switch • Internet Connection T ype . The Gateway supports five Encapsulations: RFC 1483 Bridged, RFC 1483 Routed, RFC 2516 PPPoE, RFC 2364 PPPoA, and Bridged Mode Only . Each Basic Setup screen and available features will differ depending on what type of encapsulatio[...]

17 Chapter 5: Configuring th e Gateway The Setup Tab ADSL2 Gatewa y with 4-P ort Switch IP oA If you are required to use RFC 1577 IPoA (Classical IP over A TM), then select IP oA . • IP Address. This is the Gateway’ s IP address, when seen from the WA N, or the Internet. Y our ISP will provide you with the IP Address you need to specify here . [...]

18 Chapter 5: Configuring th e Gateway The Setup Tab ADSL2 Gatewa y with 4-P ort Switch RFC 2364 PPP oA Some DSL-based ISPs use PPPoA (Po int-to-Point Protocol over A TM) to establish Internet connections. If you are connected to the Internet through a DSL line , c heck with your ISP to see if they u se PPPoA. If they do, you will have to enable PP[...]

19 Chapter 5: Configuring th e Gateway The Setup Tab ADSL2 Gatewa y with 4-P ort Switch Optional Settings (Required by some ISPs) • Host Name and Domain Name. These fields allo w you to supply a host and domain name for the Gateway . Some ISPs require these names as identification. Y ou ma y have to check with your ISP to see if your broadband In[...]

20 Chapter 5: Configuring th e Gateway The Setup Tab ADSL2 Gatewa y with 4-P ort Switch can enter up to three DNS Server IP Addresses her e . The Router will use these for quicker access to functioning DNS servers. • WINS . The Windows Internet Naming Service (W INS) converts NetBIOS names to IP addresses. If you use a WINS server , enter th at s[...]

21 Chapter 5: Configuring th e Gateway The Setup Tab ADSL2 Gatewa y with 4-P ort Switch • Internet IP Address. The Router’s curr ent Internet IP Address is displayed here . Because it is dynamic , this will change . • Status. The status of the DDNS ser vice connection is displayed here . When finished making your changes on this tab , click t[...]

22 Chapter 5: Configuring th e Gateway The Security Tab ADSL2 Gatewa y with 4-Port Switch • Subnet Mask. The Subnet Mask (also known as the Network Mask) deter mines which portion of an IP address is the network portion, and which portion is the host portion. • Gateway . This IP address should be the IP address of the gateway device that allows[...]

23 Chapter 5: Configuring th e Gateway The Security Tab ADSL2 Gatewa y with 4-P ort Switch Block W AN requests • Block Anonymous Internet Requests. This keeps y our network from being “pinged” or detected and reinforces your network security by hiding your network por ts, so it is more difficult for intruders to discover your network. Select [...]

24 Chapter 5: Configuring th e Gateway The Security Tab ADSL2 Gatewa y with 4-P ort Switch multiple tunnels and does no t have to match the name used at the other end of the tunnel. T o delete a tunnel entry , select the tunnel, then click Delete . T o view a summar y of the settings, click Summ ary . • Local Secure Group and Remote Secure Group.[...]

25 Chapter 5: Configuring th e Gateway The Security Tab ADSL2 Gatewa y with 4-P ort Switch Manual Select Manual, then select the Encryption Algorithm from th e drop-down menu. Enter the Encryption Key in the field (if you chose DES for your Encryption Algorithm, enter 16 hexadecimal characters, if you chose 3DES, enter 48 hexadecimal characters). S[...]

26 Chapter 5: Configuring th e Gateway The Security Tab ADSL2 Gatewa y with 4-P ort Switch • Key Life Time . In the Key Lifetime field, you may option ally select to have the key expire at the end of a time period of your choosing. Enter the number of seconds you’ d like the key to be used until a re-key negotiation between each endpoint is com[...]

27 Chapter 5: Configuring th e Gateway The Access Restrictions Tab ADSL2 Gatewa y with 4-P ort Switch The Access Restrictions T ab Internet Access The Access Restrictions tab allows you to blo ck or allow specific kinds of Internet usage. Y ou can set up Internet access policies for specific computers and set up filters by using network port number[...]

28 Chapter 5: Configuring th e Gateway The Access Restrictions Tab ADSL2 Gatewa y with 4-P ort Switch 3. If you wish to Deny or Allow Internet access for those computers you listed on the List of PCs screen, click the option. 4. Y ou can filter access to various services accessed ov er the Internet, such as FTP or T elnet, by selecting a service fr[...]

29 Chapter 5: Configuring th e Gateway The Applications and Gaming Tab ADSL2 Gatewa y with 4-P ort Switch The Applications and Gaming T ab Single Port Forwarding The Single Port Forwarding screen provides options for cu stomization of port services for common applications. When users send this type of request to your network via the Inter net, the [...]

30 Chapter 5: Configuring th e Gateway The Applications and Gaming Tab ADSL2 Gatewa y with 4-P ort Switch Port T riggering Port T riggering is used for special applications that can request a port to be opened on demand. For this featu re , the Gateway will watch outgoing data for specific port numbers. The Gateway will remember the IP address of t[...]

31 Chapter 5: Configuring th e Gateway The Applications and Gaming Tab ADSL2 Gatewa y with 4-P ort Switch QOS Quality of Service (QoS) ensures better ser vice to high-priority types of network traffic , wh ich may involve demanding, re al- time applications, such as Internet phone calls or videoconferencing. Application-based QoS Application-based [...]

32 Chapter 5: Configuring th e Gateway The Administration Tab ADSL2 Gatewa y with 4-P ort Switch Enable 802.1p P bit s scheduling. VLAN’ s VID . Select this option to enable 802.1p P bits classification scheduling in the appropriate VLAN based on IEEE 802.1Q VL AN identification. Enter the VLAN VID (VLAN Identifier) number in the field. When you [...]

33 Chapter 5: Configuring th e Gateway The Administration Tab ADSL2 Gatewa y with 4-P ort Switch Figure 5- 30: Reporting Identification. T o enable SNMP , click Enabled . T o disable SNMP , click Disabled . UPnP UPnP allows Windows XP to automatically configure the Gateway for various Internet applications, such as gaming and videoconferencing. UPn[...]

34 Chapter 5: Configuring th e Gateway The Administration Tab ADSL2 Gatewa y with 4-P ort Switch Diagnostics Ping T est Ping T est Parameters • Ping T arget IP . Enter the IP Address that you want to ping in the field. This can be either a local (LAN) IP or an Internet (WAN) IP address. • Ping Size . Enter the size of the ping packets. • Numb[...]

35 Chapter 5: Configuring th e Gateway The Administration Tab ADSL2 Gatewa y with 4-P ort Switch Factory Defaults Restore Factory Defaults. If you wish to restore the Gateway to its factor y default settings and lose all your settings, click Ye s . T o beg in the restore pro cess, click the Sa ve Settings button to save these changes, or click the [...]

36 Chapter 5: Configuring th e Gateway The Administration Tab ADSL2 Gatewa y with 4-P ort Switch Reboot This tab allows you to do a soft or hard reboot of your Gateway . Reboot Mode. T o reboot your Gateway , select Ha r d or Soft . Choose hard to power c ycle the Gateway or soft to restart it without a power c ycle . T o begin the reboot process, [...]

37 Chapter 5: Configuring th e Gateway The Status Tab ADSL2 Gatewa y with 4-P ort Switch The Status T ab Gateway This screen displays information about you r Ga teway and its W AN (Inter net) Connections. Gatewa y Information Gateway Information displays the Software V ersion, MAC Address, and Current Time . Internet Connections The Internet Connec[...]

38 Chapter 5: Configuring th e Gateway The Status Tab ADSL2 Gatewa y with 4-P ort Switch DSL Connection The DSL Connection information that is displayed is t he Status, Downstream Rate , and Upstream Rate . The PVC Connection infor mation that is displayed is Encapsulation, Multiplexing, QoS , Pcr Rate, Scr Rate , Autodetect, VPI, VCI, and PVC Stat[...]

39 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch Appendix A: Troubleshooting This appendix consists of two parts: “Common Problems and Solutions” and “F requently Asked Questions. ” Provided are possible solutions to problems that may occu r during the installation and operation of the Gatewa[...]

40 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch 7. T oward the bottom of the window , select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS ser ver (pro vided by your ISP). Contact your ISP or go on its website to find the information. 8. Click the OK [...]

41 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch For Windows 98 and Me: • Click Start and Ru n . In the Open field, type in command. Press the Enter key or click the OK button. For Windows NT , 2000, and XP: • Click Star t and Run . In the Open field, type cmd. Press the Enter key or click the OK[...]

42 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch 3. Refer to “Problem #10: I need to remove the pro xy settings or the dial-up pop-up window (for PPPoE users). ” 5. I can’t get my Virtual Priv ate Netw ork (VPN) working thr ough the Gatewa y . Access the Gateway’ s web interface by going to h[...]

43 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch field provided. Check “ Appendix D: Finding the MAC Address and IP Address for Y our Ethernet Adapter” for details on getting an IP address. 6. Check the Enable option for the port ser vices you want to use . Consider the example below: Customized [...]

44 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch 8. I can’t get the Internet game, serv er , or applicat ion to work . If you are having difficulties getting any Internet game , server , or application to function pro perly , consider exposing one computer to the Internet using DeMilitar ized Zon e[...]

45 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch • For Netscape 4.7 or higher: 1. Start Netscape Navigator , and click Edit , Preferences , Advanced , and Proxies . 2. Make sure you have Direct connection to the Internet selected on this screen. 3. Close all the windows to finish. 11. T o start ove[...]

46 Appendix A: Troublesh ooting Common Problems and So lutions ADSL2 Gatewa y with 4-P ort Switch 1. T o connect to the Gateway , go to the web browser , and enter http://192.168.1.1 or the IP address of the Gateway . 2. Enter the username and password, if asked. (The default user name and password is admin.) 3. On the Setup screen, select the opti[...]

47 Appendix A: Troublesh ooting Frequently Asked Questions ADSL2 Gatewa y with 4-P ort Switch • If the Gateway is configured correctly , check your Internet connection (DSL/cable modem, etc.) to see if it is working correctly . Y ou can remove the Gateway to verify a direct connection. • Manually configure the TCP/IP settings with a DNS address[...]

48 Appendix A: Troublesh ooting Frequently Asked Questions ADSL2 Gatewa y with 4-P ort Switch Does the Gateway supp ort ICQ send file? Y es, with the following fix: click ICQ menu -> prefer ence -> connections tab->, and check I am behind a firewall or proxy . Then set the firewall time-out to 80 seconds in the firewall setting. The Intern[...]

49 Appendix A: Troubleshoo ting Frequently Asked Questions ADSL2 Gatewa y with 4-Port Switch Gateway’ s web-based utility . If the Gateway’ s Internet connection is working well, there is no need to download a newer firmware version, unless that version contains new features that you would like to use . Will the Gateway function in a Macintosh [...]

50 Appendix A: Troublesh ooting Frequently Asked Questions ADSL2 Gatewa y with 4-P ort Switch How can I check whether I have static or DHCP IP Addresses? Consult your ISP to obtain this information. How do I g et mIRC to wo rk with the Gat eway? Under the Port Forwarding tab , set port forwarding to 113 for the computer on which you are using mIRC.[...]

53 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway Introduc tion ADSL2 Gatewa y with 4-P ort Switch Appendix B: Configuring IPSec between a Windows 2000 or XP Computer and the Gateway Introduction This document demonstrates how to establish a secure IPSec tunnel using preshared keys to join a private network ins[...]

54 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch How to Establish a Secure IPSec T unnel Step 1: Create an IPSec Polic y 1. Click the Start button, select Ru n , and type secpol.msc in the Open field. The Local Security Setting screen wi[...]

55 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 3. The Filters Properties screen will appear , as shown in Figure C-5. Select the Addressing tab . In the Sou rce address field, select My IP Address . In the Destination address field, se[...]

56 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 7. The IP Filter List screen should appear , as shown in Figure C-7. Enter an appropriate name , such as Router - >win for the filter list, and de-select the Use Add Wizard check box. C[...]

57 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch Step 3: Configure Indi vidual T unnel Rules T unnel 1: win->Router 1. From the IP Filter List tab , shown in Figure C-10, click the filter list win->Router . 2. Click the Filter Acti[...]

58 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 4. Select the Authenticatio n Methods tab, sho wn in Figure C-13, and click the Edit button. 5. Change the authentication method to Use this string to protect the k ey exchange (preshared [...]

59 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 7. Select the T un nel Setting tab , shown in Figure C-16, and click The tunnel endpoint is specified by this IP Address radio button. Then, enter the Router’ s W A N IP Address. 8. Sele[...]

60 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 10. Go to the IP Filter List tab , and click the filter list Router->win , as shown in Figure C-19. 11. Click the Filter Action tab , and select the filter action Require Security , as [...]

61 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 13. Change the authentication method to Use this string to pr otect the key exchange (preshared key) , and enter the preshared key string, such as XYZ12345, as shown in Figure C-22. (This [...]

62 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch 16. Click the Connection T ype tab , shown in Figure C-25, and select All network connections . Then click the OK or Close button to finish. 17. From the Rules tab , shown in Figure C-26, [...]

63 Appendix B: Configuring IPSec betwe en a Windows 2000 or XP Computer and the Gateway How to Establish a Secure IPSec Tunnel ADSL2 Gatewa y with 4-P ort Switch Step 5: Create a T unnel Thro ugh the W eb-Based Utility 1. Open your web browser , and enter 192.168. 1.1 in the Address field. Press the Ente r key . 2. When the User name and Password f[...]

64 Appendix C: Findin g the MAC Add ress and IP Address for Your Ethernet Adapter Windows 98 or Me Instructions ADSL2 Gatewa y with 4-P ort Switch Appendix C: Finding the MAC Address and IP Address for Y our Ethernet Adapter This section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC filtering fe[...]

65 Appendix C: Findin g the MAC Add ress and IP Address for Your Ethernet Adapter Windows 2000 or XP Instructions ADSL2 Gatewa y with 4-P ort Switch Windows 2000 or XP Instructions 1. Click Start and Run . In the Open field, enter cmd . Press the Enter key or click the OK bu t ton. 2. At the command prompt, enter ipcon fig /all . Then press the Ent[...]

66 Appendix D: Upgradin g Firmware ADSL2 Gatewa y with 4-P ort Switch Appendix D: Upgrading Firmware The ADSL Gateway allows you to upgrade firmware for the LAN (network) si de of the Gateway through the Web- Utility's Firmware Upgrade tab from the Administration tab. Follo w these instructions:. Upgrade fr om LAN T o upgrade the Gateway’s f[...]

67 Appendix E: Glossary ADSL2 Gatewa y with 4-P ort Switch Appendix E: Glossar y 802.11a - An IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps and an operating frequency of 5GHz. 802.11b - An IEEE wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an operating frequency of 2[...]

68 Appendix E: Glossary ADSL2 Gatewa y with 4-P ort Switch Buffer - A block of memor y that temporarily holds data to be worked on later when a device is currently too busy to accept the data. Cable Modem - A device that con nects a computer to the cable television network, which in turn connects to the Internet. CSMA/CA (Carrier Sense M ultiple Ac[...]

69 Appendix E: Glossary ADSL2 Gatewa y with 4-P ort Switch Dynamic IP Address - A temporar y IP address assigned by a DHCP server . Encryption - Encoding data to prevent it from being read by unauthorized people . Ethernet - An IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium. Finge[...]

70 Appendix E: Glossary ADSL2 Gatewa y with 4-P ort Switch IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device. IPSec (Internet Pro tocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer . ISM band - Radio band used in w ireless networking transmissions. ISP[...]

71 Appendix E: Glossary ADSL2 Gatewa y with 4-P ort Switch PPP oE (Point to Point P roto col over Ethernet) - A type of broadband connection that provides authentication (username and password) in addition to data transport. PPTP (Point-to-Point T unneling Protocol) - A VPN protocol that allows the Point to Point Protoco l (PPP) to be tunneled thro[...]

72 Appendix E: Glossary ADSL2 Gatewa y with 4-P ort Switch TCP/IP (T ransmission Control Protocol/Inter ne t Protocol) - A network pro tocol fo r transmitting data that requires acknowledgement from the recipient of data sent. Te l n e t - A user command and TCP/IP protocol used for accessing remote computers. TFTP (T rivial File T ransfer Protocol[...]

73 Appendix F: Specifications ADSL2 Gatewa y with 4-Port Switch Appendix F: Specifications Standards IEEE 802.11g, IEEE 802.11b , IEEE 802.3u, IEEE 802.3, G .992.1 (G.dmt), G .992.2 ( G .lite), ITU G .992.3, ITU G .992.5, ANSI T1.413i2 Ports Power , LINE (ADSL), Ethern et (1-4) Buttons One Reset Button, One On/Off Switch Cabling T ype UTP CA T 5 or[...]

74 Appendix F: Specifications ADSL2 Gatewa y with 4-P ort Switch[...]

75 Appendix G: Regulatory Information ADSL2 Gateway with 4-P ort Switch Appendix G: Regulator y Information FCC ST A TEMENT This product has been tested and complies with the specifications for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interfe rence in [...]

76 Appendix H: Warranty Informat ion ADSL2 Gatewa y with 4-P ort Switch Appendix H: Warrant y Information Li n ks y s w a r r a n ts to Y ou t h a t , f or a p e riod of two y e a r s (t h e “ W a r r a n t y P e r i od ” ) , y o u r Li n ks y s P r o du c t w i ll be s u b s t a n t ially free of defec t s in materials and wo rkmanship under n[...]

77 Appendix I: Contact Informa tion ADSL2 Gateway with 4-P ort Switch Appendix I: Contact Information Need to contact Linksys? Visit us online for information on the latest pro ducts and updates to your existing products at: http://www .linksys.com/international If you experience problems with any Linksys produ ct, you can e-mail us a t: In Europe [...]