® A Division of Cisco Systems, Inc. 2.4 GHz Wireless-G 802.11g ADSL Gateway WIRELESS Model No.
Wireless-G ADSL Gateway Copyright and Trademarks Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2003 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.
Wireless-G ADSL Gateway Table of Contents Chapter 1: Introduction 1 Welcome What’s in this Guide? 1 2 Chapter 2: Planning your Network The Gateway’s Functions IP Addresses Why do I need a VPN? What is a VPN? Chapter 3: Getting to Know the Wireless-G ADSL Gateway The Back Panel The Front Panel Chapter 4: Connecting the Wireless-G Broadband Gateway 4 4 4 5 6 8 8 9 10 Overview Wired Connection to a Computer Wireless Connection to a Computer 10 11 11 Chapter 5: Configuring the Gateway 13 Overview
Wireless-G ADSL Gateway Environment How to Establish a Secure IPSec Tunnel 62 63 Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter 73 Windows 98 or Me Instructions Windows 2000 or XP Instructions Appendix E: Upgrading Firmware Appendix F: Glossary Appendix G: Specifications Appendix H: Regulatory Information Appendix I: Warranty Information Appendix J: Contact Information 73 74 75 76 82 84 87 88
Wireless-G ADSL Gateway List of Figures Figure 2-1: Network Figure 2-2: VPN Gateway-to-VPN Gateway Figure 2-3: Computer-to-VPN Gateway Figure 3-1: Back Panel Figure 3-2: Front Panel Figure 4-1: LAN Connection Figure 4-2: ADSL Connection Figure 4-3: Power Connection Figure 5-1: Password Screen Figure 5-2: Basic Setup Tab Figure 5-3: Dynamic IP Figure 5-4: Static IP Figure 5-5: RFC 1483 Routed Figure 5-6: RFC 2516 PPPoE Figure 5-7: RFC 2364 PPoA Figure 5-8: Bridged Mode Only Figure 5-9: Optional Settings Fig
Wireless-G ADSL Gateway Figure 5-23: Internet Policy Summary Figure 5-24: List of PCs Figure 5-25: Port Services Figure 5-26: Single Port Forwarding Figure 5-27: Port Range Forwarding Figure 5-28: Port Triggering Figure 5-29: DMZ Figure 5-30: Management Figure 5-31: Reporting Figure 5-32: Ping Test Figure 5-33: Factory Defaults Figure 5-34: Firmware Upgrade Figure 5-35: Status Figure 5-36: Local Network Figure 5-37: DHCP Clients Table Figure 5-38: Wireless Figure 5-39: DSL Connection Figure C-1: Password S
Wireless-G ADSL Gateway Figure C-17: Connection Type Tab Figure C-18: Properties Screen Figure C-19: IP Filter List Tab Figure C-20: Filter Action Tab Figure C-21: Authentication Methods Tab Figure C-22: Preshared Key Figure C-23: New Preshared Key Figure C-24: Tunnel Seting Tab Figure C-25: Connection Type Figure C-26: Rules Figure C-27: Local Computer Figure D-1: IP Configuration Screen Figure D-2: MAC Address/Adapter Address Figure D-3: MAC Address/Physical Address Figure D-4: MAC Address Filter Figure
Wireless-G ADSL Gateway Chapter 1: Introduction Welcome The Linksys Wireless-G ADSL Gateway is the all-in-one solution for Internet connectivity in your home. The ADSL Modem function gives you a blazing fast connection to the Internet, far faster than a dial-up, and without tying up your phone line. Connect your computers to the Gateway via the built-in 4-port 10/100 Ethernet Switch to jump start your home network.
Wireless-G ADSL Gateway What’s in this Guide? This user guide covers the steps for setting up and using the Wireless-G ADSL Gateway. • Chapter 1: Introduction This chapter describes the Wireless-G ADSL Gateway Wireless-G ADSL Gateway applications and this User Guide. • Chapter 2: Planning your Network This chapter describes the basics of networking. • Chapter 3: Getting to Know the Wireless-G ADSL Gateway This chapter describes the physical features of the Gateway.
Wireless-G ADSL Gateway • Appendix G: Specifications This appendix provides the technical specifications for the Gateway. • Appendix H: Warranty Information This appendix supplies the warranty information for the Gateway. • Appendix I: Regulatory Information This appendix supplies the regulatory information regarding the Gateway. • Appendix J: Contact Information This appendix provides contact information for a variety of Linksys resources, including Technical Support.
Wireless-G ADSL Gateway Chapter 2: Planning your Network The Gateway’s Functions A Gateway is a network device that connects two networks together. In this instance, the Gateway connects your Local Area Network (LAN), or the group of computers in your home or office, to the Internet. The Gateway processes and regulates the data that travels between these two networks. The Gateway’s NAT feature protects your network of computers so users on the public, Internet side cannot “see” your computers.
Wireless-G ADSL Gateway 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. You can get that information from your ISP. Dynamic IP Addresses A dynamic IP address is automatically assigned to a device on the network, such as computers and print servers.
Wireless-G ADSL Gateway telecommuters, and/or professionals on the road (travelers can connect to a VPN Gateway using any computer with VPN client software that supports IPSec, such as SSH Sentinel.) There are two basic ways to create a VPN connection: • VPN Gateway to VPN Gateway • Computer (using VPN client software that supports IPSec) to VPN Gateway The VPN Gateway creates a “tunnel” or channel between two endpoints, so that data transmissions between them are secure.
Wireless-G ADSL Gateway 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 data protected? That is when a VPN can help. VPNs secure data moving outside of your network as if it were still within that network. When data is sent out across the Internet from your computer, it is always open to attacks.
Wireless-G ADSL Gateway Chapter 3: Getting to Know the Wireless-G ADSL Gateway The Back Panel The Gateway’s ports, where a network cable is connected, are located on the back panel. Figure 3-1: Back Panel ADSL The ADSL port connects to the ADSL line. LAN (1-4) The LAN (Local Area Network) ports connect to your computer and other network devices. Power The Power port is where you will connect the power adapter. Reset Button There are two ways to Reset the Gateway's factory defaults.
Wireless-G ADSL Gateway The Front Panel The Gateway's LEDs, where information about network activity is displayed, are located on the front panel. Figure 3-2: Front Panel Power Green. The Power LED lights up when the Gateway is powered on. WLAN Green. The WLAN LED lights up whenever there is a successful wireless connection. If the LED is blinking, the Gateway is actively sending or receiving data to or from one of the devices on the network. LAN (1-4) Green. The LAN LED serves two purposes.
Wireless-G ADSL Gateway Chapter 4: Connecting the Wireless-G Broadband Gateway Overview The Gateway’s setup consists of more than simply plugging hardware together. You will have to configure your networked computers to accept the IP addresses that the Gateway assigns them (if applicable), and you will also have to configure the Gateway with setting(s) provided by your Internet Service Provider (ISP).
Wireless-G ADSL Gateway Wired Connection to a Computer 1. Before you begin, make sure that all of your network’s hardware is powered off, including the Gateway and all computers. 2. Connect one end of an Ethernet network cable to one of the LAN ports (labeled 1-4) on the back of the Gateway (see Figure 4-1), and the other end to an Ethernet port on a computer. 3. Repeat this step to connect more computers, a switch, or other network devices to the Gateway.
Wireless-G ADSL Gateway IMPORTANT: If using microfilters, make sure to only place the microfilters between the phone and the wall jack and not between the Gateway and the wall jack or your ADSL will not connect. 2. Connect a phone cable from the ADSL port on the Gateway’s back panel (see Figure 4-2) to the wall jack of the ADSL line. A small device called a microfilter may be necessary between each phone and wall jack to prevent interference. Contact your ISP if you have any questions.
Wireless-G ADSL Gateway Chapter 5: Configuring the Gateway Overview Follow the steps in this chapter and use the Gateway’s web-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 via your web browser through use of a computer connected to the Gateway.
Wireless-G ADSL Gateway • VPN. To enable or disable IPSec and/or PPTP Pass-through, and set up VPN tunnels, use this screen. Access Restrictions • Internet Access. This screen allows you to prevent or permit only certain users from attaching to your network. Applications & Gaming • Single Port Forwarding. Use this screen to set up common services or applications on your network. • Port Range Forwarding. To set up public services or other specialized Internet applications on your network, click this tab.
Wireless-G ADSL Gateway How to Access the Web-based Utility To access the web-based 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 request page, shown in Figure 5-1 will appear. (non-Windows XP users will see a similar screen.) Enter admin (the default user name) in the User Name field, and enter admin (the default password) in the Password field. Then click the OK button.
Wireless-G ADSL Gateway Static IP If you are required to use a permanent IP address to connect to the Internet, then select Use the following IP Address. (See Figure 5-4.) • IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP will provide you with the IP Address you need to specify here. • Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask. • Default Gateway.
Wireless-G ADSL Gateway RFC 1483 Routed If you are required to use RFC 1483 Routed, then select RFC 1483 Routed. (See Figure 5-5.) • IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP will provide you with the IP Address you need to specify here. • Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask. • Default Gateway. Your ISP will provide you with the Default Gateway Address, which is the ISP server’s IP address.
Wireless-G ADSL Gateway RFC 2364 PPPoA Some DSL-based ISPs use PPPoA (Point-to-Point Protocol over ATM) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoA. If they do, you will have to enable PPPoA. (See Figure 5-7.) • User Name and Password. Enter the User Name and Password provided by your ISP. • Connect on Demand: Max Idle Time.
Wireless-G ADSL Gateway • MTU. The MTU (Maximum Transmission Unit) setting specifies the largest packet size permitted for network transmission. Select Manual and enter the value desired. It is recommended that you leave this value in the 1200 to 1500 range. By default, MTU is configured automatically. Network Setup • Router IP. The values for the Gateway’s Local IP Address and Subnet Mask are shown here. In most cases, keeping the default values will work. • Local IP Address. The default value is 192.
Wireless-G ADSL Gateway The DDNS Tab The Gateway offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or other server behind the Gateway. Before you can use this feature, you need to sign up for DDNS service at DynDNS.org. DDNS DDNS Service. If your DDNS service is provided by DynDNS.org, then select DynDNS.org in the drop-down menu. (See Figure 5-10.
Wireless-G ADSL Gateway Advanced Routing Tab The Advanced Routing screen allows you to configure the dynamic routing and static routing settings. (See Figure 5-11.) Advanced Routing • Dynamic Routing. With Dynamic Routing you can enable the Gateway to automatically adjust to physical changes in the network’s layout. The Gateway, using the RIP protocol, determines the network packets’ route based on the fewest number of hops between the source and the destination.
Wireless-G ADSL Gateway • Interface. Select LAN & Wireless or Internet, depending on the location of the static route’s final destination. • Show Routing Table. Click the Show Routing Table button to open a screen (see Figure 5-12) displaying how data is routed through your LAN. For each route, the Destination IP address, Subnet Mask, Gateway, and Interface are displayed. Click the Refresh button to update the information.
Wireless-G ADSL Gateway The Wireless Tab Basic Wireless Settings (See Figure 5-13.) This screen allows you to choose your wireless network mode and wireless security. Wireless Network • Wireless Network Mode. If you have 802.11g and 802.11b devices in your network, then keep the default setting, Mixed. If you have only 802.11g devices, select 802.11g. If you have only 802.11b devices, select 802.11b. If you want to disable wireless networking, select Disabled. • Wireless Network Name (SSID).
Wireless-G ADSL Gateway with Windows XP Zero Configuration. If you want to communicate with non-Linksys wireless products or Windows XP Zero Configuration, make a note of the WEP key generated in the Key 1 field, and enter it manually in the wireless client.) After you enter the Passphrase, click the Generate button to create WEP keys. • Default Key Select which WEP key (1-4) will be used when the Gateway sends data. Make sure that the receiving device (wireless client) is using the same key.
Wireless-G ADSL Gateway Advanced Wireless Settings (See Figure 5-17.) On this screen you can access the Advanced Wireless features, including Authentication Type, Basic Data Rates, Control Tx Rates, Beacon Interval, DTIM Interval, RTS Threshold, and Fragmentation Threshold. • Control Tx Rates. The default transmission rate is Auto. The range is from 1 to 54Mbps. The rate of data transmission should be set depending on the speed of your wireless network.
Wireless-G ADSL Gateway The Security Tab Firewall When you click the Security tab, you will see the Firewall screen (see Figure 5-18). This screen contains Filters and the option to Block WAN Requests. Filters block specific Internet data types and block anonymous Internet requests. • Firewall. To add Firewall Protection, click Enabled. If you do not want Firewall Protection, click Disabled. Additional Filters • Filter Proxy. Use of WAN proxy servers may compromise the Gateway's security.
Wireless-G ADSL Gateway VPN Virtual Private Networking (VPN) is a security measure that basically creates a secure connection between two remote locations. The VPN screen, shown in Figure 5-19, allows you to configure your VPN settings to make your network more secure. VPN Passthrough • IPSec Passthrough. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec Passthrough, click the Enabled button.
Wireless-G ADSL Gateway • Encryption. Using Encryption also helps make your connection more secure. There are two different types of encryption: DES or 3DES (3DES is recommended because it is more secure). You may choose either of these, but it must be the same type of encryption that is being used by the VPN device at the other end of the tunnel. Or, you may choose not to encrypt by selecting Disable. In Figure 5-19, DES (which is the default) has been selected. • Authentication.
Wireless-G ADSL Gateway Advanced VPN Tunnel Setup From the Advanced IPSec VPN Tunnel Setup screen, shown in Figure 5-21, you can adjust the settings for specific VPN tunnels. Phase 1 • Phase 1 is used to create a security association (SA), often called the IKE SA. After Phase 1 is completed, Phase 2 is used to create one or more IPSec SAs, which are then used to key IPSec sessions. • Operation Mode. There are two modes: Main and Aggressive, and they exchange the same IKE payloads in different sequences.
Wireless-G ADSL Gateway • Key Life Time. In the Key Lifetime field, you may 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 completed. Other Setting • NetBIOS broadcast. Check the box next to NetBIOS broadcast to enable NetBIOS traffic to pass through the VPN tunnel. • Anti-replay. Check the box next to Anti-replay to enable the Anti-replay protection.
Wireless-G ADSL Gateway The Access Restrictions Tab Internet Access The Access Restrictions tab, shown in Figure 5-22, allows you to block or allow specific kinds of Internet usage. You can set up Internet access policies for specific computers and set up filters by using network port numbers. • Internet Access Policy. Multiple Filters can be saved as Internet Access Policies. When you wish to edit one, select the number of the Policy from the drop-down menu.
Wireless-G ADSL Gateway Internet Access can also be filtered by URL Address, the address entered to access Internet sites, by entering the address in one of the Website Blocking by URL Address fields. If you do not know the URL Address, filtering can be done by Keyword by entering a keyword in one of the Website Blocking by Keyword fields. When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes.
Wireless-G ADSL Gateway The Applications and Gaming Tab Single Port Forwarding The Single Port Forwarding screen provides options for customization of port services for common applications. (See Figure 5-26.) When users send this type of request to your network via the Internet, the Gateway will forward those requests to the appropriate computer.
Wireless-G ADSL Gateway Port Range Forwarding The Port Forwarding screen sets up public services on your network, such as web servers, ftp servers, e-mail servers, or other specialized Internet applications. (Specialized Internet applications are any applications that use Internet access to perform functions such as videoconferencing or online gaming. Some Internet applications may not require any forwarding.) (See Figure 5-27.
Wireless-G ADSL Gateway DMZ The DMZ screen (see Figure 5-29) allows one local user to be exposed to the Internet for use of a special-purpose service such as Internet gaming and videoconferencing through DMZ Hosting. DMZ hosting forwards all the ports for one computer at the same time, which differs from Port Range Forwarding, which can only forward a maximum of 10 ranges of ports. • DMZ Hosting.
Wireless-G ADSL Gateway The Administration Tab Management The Management screen, shown in Figure 5-30, allows you to change the Gateway’s access settings as well as configure the SNMP (Simple Network Management Protocol) and UPnP (Universal Plug and Play) features. Gateway Access Local Gateway Access. To ensure the Gateway’s security, you will be asked for your password when you access the Gateway’s Web-based Utility. The default username and password is admin. • Gateway Username. Enter the default admin.
Wireless-G ADSL Gateway • Set Community. Enter the password that allows read/write access to the Gateway’s SNMP information. UPnP UPnP allows Windows XP to automatically configure the Gateway for various Internet applications, such as gaming and videoconferencing. UPnp. To enable UPnP, click Enabled. When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes.
Wireless-G ADSL Gateway Reporting The Reporting tab, shown in Figure 5-31, provides you with a log of all incoming and outgoing URLs or IP addresses for your Internet connection. It also provides logs for VPN and firewall events. Log Log. To enable log reporting, click Enabled. • Logviewer IP Address. Enter the IP Address to receive logs into the field. Email Alerts E-Mail Alerts. To enable E-Mail Alerts, click Enabled. • Denial of Service Thresholds. Enter the thresholds of events you want to receive.
Wireless-G ADSL Gateway Diagnostics Ping Test (See Figure 5-32.) Ping Test Parameters • Ping Target 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. • No. of Pings. Enter the number of times that you want to ping. • Ping Interval. Enter the ping interval in milliseconds. Figure 5-32: Ping Test • Ping Timeout. Enter the time in milliseconds. • Ping Result.
Wireless-G ADSL Gateway Firmware Upgrade (See Figure 5-34.) To upgrade the Gateway’s firmware: 1. Click the Browse button to find the firmware upgrade file that you downloaded from the Linksys website and then extracted. 2. Double-click the firmware file you downloaded and extracted. Click the Upgrade button, and follow the instructions there.
Wireless-G ADSL Gateway The Status Tab Gateway This screen displays information about your Gateway and its WAN (Internet) Connections. (See Figure 5-35.) Gateway Information Gateway Information displays the Software Version, MAC Address, and Current Time. Internet Connections The Internet Connections displayed are the ADSL Link, PPP Login, Internt IP Address, Public Subnet Mask, Default Gateway, Primary DNS Server, and Internet DHCP IP Expires.
Wireless-G ADSL Gateway Local Network The Local Network information that is displayed is the Local Mac Address, IP Address, Subnet Mask, and DHCP Server. To view the DHCP Clients Table, click the DHCP Clients button. See Figure 5-36. DHCP Clients Table. Click the DHCP Clients Table button to show the current DHCP Client data. You will see the MAC address, computer name, and IP address of the network clients using the DHCP server. (This data is stored in temporary memory and changes periodically.
Wireless-G ADSL Gateway Wireless The Wireless network information that is displayed is the Wireless Firmware Version, MAC Address, Status, Mode, Channel, SSID, and Encryption. (See Figure 5-38.) Click the Wireless Clients Connected button to view the wireless clients connected to the Gateway. Click the Refresh button if you want to Refresh your screen.
Wireless-G ADSL Gateway DSL Connection The DSL Connection information that is displayed is the Status, Downstream Rate, Upstream Rate, Encapsulation, VPI, VcI, and Multiplexing. (See Figure 5-40.) Click the Refresh button if you want to Refresh your screen.
Wireless-G ADSL Gateway Appendix A: Troubleshooting This appendix consists of two parts: “Common Problems and Solutions” and “Frequently Asked Questions.” Provided are possible solutions to problems that may occur during the installation and operation of the Gateway. Read the descriptions below to help you solve your problems. If you can’t find an answer here, check the Linksys website at www.linksys.com. Common Problems and Solutions 1. I need to set a static IP address on a computer.
Wireless-G ADSL Gateway 7. Toward the bottom of the window, select Use the following DNS server addresses, and enter the Preferred DNS server and Alternative DNS server (provided by your ISP). Contact your ISP or go on its website to find the information. 8. Click the OK button in the Internet Protocol (TCP/IP) Properties window, and click the OK button in the Local Area Connection Properties window. 9. Restart the computer if asked.
Wireless-G ADSL Gateway B. Open a command prompt. For Windows 98 and Me: • Click Start and Run. In the Open field, type in command. Press the Enter key or click the OK button. For Windows NT, 2000, and XP: • Click Start and Run. In the Open field, type cmd. Press the Enter key or click the OK button. In the command prompt, type ping 192.168.1.1 and press the Enter key. • If you get a reply, the computer is communicating with the Gateway.
Wireless-G ADSL Gateway 3. Refer to “Problem #10: I need to remove the proxy settings or the dial-up pop-up window (for PPPoE users).” 5. I can’t get my Virtual Private Network (VPN) working through the Gateway. Access the Gateway’s web interface by going to http://192.168.1.1 or the IP address of the Gateway, and go to the Security tab. Make sure you have IPsec passthrough and/or PPTP pass-through enabled.
Wireless-G ADSL Gateway field provided. Check “Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter” for details on getting an IP address. 6. Check the Enable option for the port services you want to use. Consider the example below: Customized Application Web server FTP server SMTP (outgoing) POP3 (incoming) External Port 80 to 80 21 to 21 25 to 25 110 to 110 TCP X X X X UDP IP Address 192.168.1.100 192.168.1.101 192.168.1.102 192.168.1.
Wireless-G ADSL Gateway 8. I can’t get the Internet game, server, or application to work. If you are having difficulties getting any Internet game, server, or application to function properly, consider exposing one computer to the Internet using DeMilitarized Zone (DMZ) hosting. This option is available when an application requires too many ports or when you are not sure which port services to use.
Wireless-G ADSL Gateway 4. Click the OK button to go back to the previous screen. 5. Click the option Never dial a connection. This will remove any dial-up pop-ups for PPPoE users. • 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. To start over, I need to set the Gateway to factory default.
Wireless-G ADSL Gateway 1. To 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 username and password is admin.) 3. On the Setup screen, select the option Keep Alive, and set the Redial Period option at 20 (seconds). 4. Click the Save Settings button. Click the Status tab, and click the Connect button. 5. You may see the login status display as Connecting.
Wireless-G ADSL Gateway • If the Gateway is configured correctly, check your Internet connection (DSL/cable modem, etc.) to see if it is working correctly. You can remove the Gateway to verify a direct connection. • Manually configure the TCP/IP settings with a DNS address provided by your ISP. • Make sure that your browser is set to connect directly and that any dial-up is disabled. For Internet Explorer, click Tools, Internet Options, and then the Connection tab.
Wireless-G ADSL Gateway Does the Gateway support ICQ send file? Yes, with the following fix: click ICQ menu -> preference -> 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 Internet user can then send a file to a user behind the Gateway. I set up an Unreal Tournament Server, but others on the LAN cannot join.
Wireless-G ADSL Gateway 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 environment? Yes, but the Gateway’s setup pages are accessible only through Internet Explorer 4.0 or Netscape Navigator 4.0 or higher for Macintosh. I am not able to get the web configuration screen for the Gateway.
Wireless-G ADSL Gateway How can I check whether I have static or DHCP IP Addresses? Consult your ISP to obtain this information. How do I get mIRC to work with the Gateway? Under the Port Forwarding tab, set port forwarding to 113 for the computer on which you are using mIRC. Can the Gateway act as my DHCP server? Yes. The Gateway has DHCP server software built-in.
Wireless-G ADSL Gateway To achieve true seamless connectivity, the wireless LAN must incorporate a number of different functions. Each node and access point, for example, must always acknowledge receipt of each message. Each node must maintain contact with the wireless network even when not actually transmitting data. Achieving these functions simultaneously requires a dynamic RF networking technology that links access points and nodes.
Wireless-G ADSL Gateway Will the information be intercepted while it is being transmitted through the air? WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum technology, it has the inherent security feature of scrambling. On the software side, WLAN offers the encryption function (WEP) to enhance security and access control.
Wireless-G ADSL Gateway Appendix B: Wireless Security Important Information for Wireless Products Linksys wants to make wireless networking as safe and easy for you as possible. So, please keep the following points in mind whenever setting up or using your wireless network. 1. Performance. The actual performance of your wireless network depends on a number of factors, including: In an Infrastructure environment, your distance from the access point.
Wireless-G ADSL Gateway E. Change the SSID periodically. F. Enable WEP 128-bit Encryption. Please note that this will reduce your network performance. G. Change the WEP encryption keys periodically. For information on implementing these security features, please refer to the User Guide. 4. Security Threats Facing Wireless Networks Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking products first listen for "beacon messages".
Wireless-G ADSL Gateway MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with a random MAC Address. WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a panacea for wireless security concerns. This is overstating WEP’s ability. Again, this can only provide enough security to make a hacker’s job more difficult.
Wireless-G ADSL Gateway Appendix C: 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 inside the Gateway and a Windows 2000 or XP computer. You can find detailed information on configuring the Windows 2000 server at the Microsoft website: Microsoft KB Q252735 - How to Configure IPSec Tunneling in Windows 2000 http://support.microsoft.
Wireless-G ADSL Gateway How to Establish a Secure IPSec Tunnel Step 1: Create an IPSec Policy 1. Click the Start button, select Run, and type secpol.msc in the Open field. The Local Security Setting screen will appear as shown in Figure C-1. 2. Right-click IP Security Policies on Local Computer, and click Create IP Security Policy. Figure C-1: Password Screen 3. Click the Next button, and then enter a name for your policy (for example, to_Gateway). Then, click Next. 4.
Wireless-G ADSL Gateway 3. The IP Filter List screen should appear, as shown in Figure C-4. Enter an appropriate name, such as win>Gateway, for the filter list, and de-select the Use Add Wizard check box. Then, click the Add button. 4. The Filters Properties screen will appear, as shown in Figure C-5. Select the Addressing tab. In the Source address field, select My IP Address. In the Destination address field, select A specific IP Subnet, and fill in the IP Address: 192.168.1.0 and Subnet mask: 255.255.
Wireless-G ADSL Gateway 8. The IP Filter List screen should appear, as shown in Figure C-7. Enter an appropriate name, such as Gateway>win for the filter list, and de-select the Use Add Wizard check box. Click the Add button. 9. The Filters Properties screen will appear, as shown in Figure C-8. Select the Addressing tab. In the Source address field, select A specific IP Subnet, and enter the IP Address: 192.168.1.0 and Subnet mask: 255.255.255.0.
Wireless-G ADSL Gateway Step 3: Configure Individual Tunnel Rules Tunnel 1: win->Gateway 1. From the IP Filter List tab, shown in Figure C-10, click the filter list win->Gateway. 2. Click the Filter Action tab (as in Figure C-11), and click the filter action Require Security radio button. Then, click the Edit button. 3.
Wireless-G ADSL Gateway 4. Select the Authentication Methods tab, shown in Figure C-13, and click the Edit button. 5. Change the authentication method to Use this string to protect the key exchange (preshared key), as shown in Figure C-14, and enter the preshared key string, such as XYZ12345. Click the OK button. 6. This new Preshared key will be displayed in Figure C-15. Click the OK or Close button to continue.
Wireless-G ADSL Gateway 7. Select the Tunnel Setting tab, shown in Figure C-16, and click The tunnel endpoint is specified by this IP Address radio button. Then, enter the Gateway’s WAN IP Address. 8. Select the Connection Type tab, as shown in Figure C-17, and click All network connections. Then, click the OK or Close button to finish this rule. Tunnel 2: Gateway->win 9.
Wireless-G ADSL Gateway 10. Go to the IP Filter List tab, and click the filter list Gateway->win, as shown in Figure C-19. 11. Click the Filter Action tab, and select the filter action Require Security, as shown in Figure C-20. Then, click the Edit button. 12. Click the Authentication Methods tab, and verify that the authentication method Kerberos is selected, as shown in Figure C-21. Then, click the Edit button.
Wireless-G ADSL Gateway 13. Change the authentication method to Use this string to protect the key exchange (preshared key), and enter the preshared key string, such as XYZ12345, as shown in Figure C-22. (This is a sample key string. Yours should be a key that is unique but easy to remember.) Then click the OK button. 14. This new Preshared key will be displayed in Figure C-23. Click the OK button to continue. 15.
Wireless-G ADSL Gateway 16. Click the Connection Type tab, shown in Figure C-25, and select All network connections. Then click the OK (for Windows XP) or Close (for Windows 2000) button to finish. 17. From the Rules tab, shown in Figure C-26, click the OK button to return to the secpol screen. Step 4: Assign New IPSec Policy In the IP Security Policies on Local Computer window, shown in Figure C-27, right-click the policy named to_Gateway, and click Assign. A green arrow appears in the folder icon.
Wireless-G ADSL Gateway Step 5: Create a Tunnel Through the Web-Based Utility 1. Open your web browser, and enter 192.168.1.1 in the Address field. Press the Enter key. 2. When the User name and Password field appears, enter the default the user name and password admin. Press the Enter key. 3. From the Setup tab, click the VPN tab. 4. From the VPN tab, shown in Figure C-28, select the tunnel you wish to create in the Select Tunnel Entry dropdown box. Then click Enabled.
Wireless-G ADSL Gateway Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter This section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC filtering feature of the Gateway. You can also find the IP address of your computer’s Ethernet adapter. This IP address is used for the Gateway’s filtering, forwarding, and/or DMZ features. Follow the steps in this appendix to find the adapter’s MAC or IP address in Windows 98, Me, 2000, or XP.
Wireless-G ADSL Gateway Windows 2000 or XP Instructions 1. Click Start and Run. In the Open field, enter cmd. Press the Enter key or click the OK button. Note: The MAC address is also called the Physical Address. 2. At the command prompt, enter ipconfig /all. Then press the Enter key. 3. Write down the Physical Address as shown on your computer screen (Figure D-3); it is the MAC address for your Ethernet adapter. This appears as a series of numbers and letters.
Wireless-G ADSL Gateway Appendix E: Upgrading Firmware The Gateway's firmware is upgraded through the Web-Utility's Firmware Upgrade tab from the Administration tab. Follow these instructions: 1. Click the Browse button to find the firmware upgrade file that you downloaded from the Linksys website and then extracted. 2. Double-click the firmware file you downloaded and extracted. Click the Upgrade button, and follow the instructions there.
Wireless-G ADSL Gateway Appendix F: Glossary 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 2.4GHz. 802.11g - An IEEE wireless networking standard that specifies a maximum data transfer rate of 54Mbps, an operating frequency of 2.4GHz, and backward compatibility with 802.11b devices.
Wireless-G ADSL Gateway Buffer - A block of memory 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 connects a computer to the cable television network, which in turn connects to the Internet. CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - A method of data transfer that is used to prevent data loss in a network. CTS (Clear To Send) - A signal sent by a device to indicate that it is ready to receive data.
Wireless-G ADSL Gateway Dynamic IP Address - A temporary 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. Finger - A program that tells you the name associated with an e-mail address. Firewall - Security measures that protect the resources of a local network from intruders. Firmware - 1.
Wireless-G ADSL Gateway IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device. IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer. ISM band - Radio band used in wireless networking transmissions. ISP (Internet Service Provider) - A company that provides access to the Internet. LAN (Local Area Network) - The computers and networking products that make up the network in your home or office.
Wireless-G ADSL Gateway PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication (username and password) in addition to data transport. PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe. Preamble - Part of the wireless signal that synchronizes network traffic.
Wireless-G ADSL Gateway TCP/IP (Transmission Control Protocol/Internet Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of data sent. Telnet - A user command and TCP/IP protocol used for accessing remote computers. TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that uses UDP and has no directory or password capability. Throughput - The amount of data moved successfully from one node to another in a given time period.
Wireless-G ADSL Gateway Appendix H: Regulatory Information FCC STATEMENT 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 interference in a residential installation.
Wireless-G ADSL Gateway Caution: This equipment is intended to be used in all EU and EFTA countries. Outdoor use may be restricted to certain frequencies and/or may require a license for operation. Contact local Authority for procedure to follow.
Wireless-G ADSL Gateway An FCC compliant telephone cord and modular plug is provided with this equipment. This equipment is designed to be connected to the telephone network or premises wiring using a compatible modular jack, which is FCC Part 68 compliant. Connection to the telephone network should be made by using the standard modular telephone jack.
Wireless-G ADSL Gateway Appendix I: Warranty Information LIMITED WARRANTY Linksys warrants to You that, for a period of three years (the “Warranty Period”), your Linksys Product will be substantially free of defects in materials and workmanship under normal use. Your exclusive remedy and Linksys' entire liability under this warranty will be for Linksys at its option to repair or replace the Product or refund Your purchase price less any rebates. This limited warranty extends only to the original purchaser.
Wireless-G ADSL Gateway Appendix J: Contact Information Need to contact Linksys? Visit us online for information on the latest products and updates to your existing products at: http://www.linksys.com/international If you experience problems with any Linksys product, you can e-mail us at: In Europe E-mail Address Austria support.at@linksys.com Belgium support.be@linksys.com Denmark support.dk@linksys.com France support.fr@linksys.com Germany support.de@linksys.com Italy support.it@linksys.
Wireless-G ADSL Gateway Appendix G: Specifications Standards IEEE 802.11g, IEEE 802.11b, IEEE 802.3, IEEE 802.3u, G.992.1 (G.dmt), G.992.2 (G.lite), T1.
Wireless-G ADSL Gateway Storage Temp.
