User manual LINKSYS WRT54GX4

® A Division of Cisco Systems, Inc. 2.4 GHz Wireless-G 802.11g Broadband Router WIRELESS with SRX400 User Guide Model No. WRT54GX4 Wireless-G Broadband Router with SRX400 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 © 2005 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders. WARNING: This product contains chemicals, including lead, known to the State of California to cause cancer, and birth defects or other reproductive harm. Wash hands after handling. How to Use This User Guide This User Guide has been designed to make understanding networking with the Wireless-G Broadband Router easier than ever. Look for the following items when reading this User Guide: This checkmark means there is a note of interest and is something you should pay special attention to while using the Wireless-G Broadband Router. This exclamation point means there is a caution or warning and is something that could damage your property or the Wireless-G Broadband Router. This question mark provides you with a reminder about something you might need to do while using the Wireless-G Broadband Router. In addition to these symbols, there are definitions for technical terms that are presented like this: word: definition. Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like this: Figure 0-1: Sample Figure Description Figure numbers and descriptions can also be found in the "List of Figures" section in the "Table of Contents". WRT54GX4-UG-51018NC JL Wireless-G Broadband Router with SRX400 Table of Contents Chapter 1: Introduction Welcome What's in this Guide? 1 1 2 Chapter 2: Planning Your Wireless Network Network Topology Ad-Hoc versus Infrastructure Mode Network Layout 4 4 4 4 Chapter 3: Getting to Know the Wireless-G Broadband Router with SRX400 The Router's Ports and Reset Button The Router's LEDs 6 6 7 Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 Overview Hardware Installation for Connection to Your Broadband Modem Placement Options 8 8 8 9 Chapter 5: Configuring the Wireless-G Broadband Router Overview The Setup Tab - Basic Setup The Setup Tab - DDNS The Setup Tab - MAC Address Clone The Setup Tab - Advanced Routing The Wireless Tab - Basic Wireless Settings The Wireless Tab - Wireless Security The Wireless Tab - Wireless MAC Filter The Wireless Tab - Advanced Wireless Settings The Security Tab - Firewall The Access Restrictions Tab - Internet Access The Applications and Gaming Tab - Port Range Forward The Applications and Gaming Tab - Port Triggering The Applications and Gaming Tab - DMZ The Applications and Gaming Tab - QoS The Administration Tab - Management The Administration Tab - Log 10 10 11 16 17 18 20 21 23 24 26 27 29 30 30 31 34 36 Wireless-G Broadband Router with SRX400 The Administration Tab - Diagnostics The Administration Tab - Factory Defaults The Administration Tab - Firmware Upgrade The Administration Tab - Config Management The Status Tab - Router The Status Tab - Local Network The Status Tab - Wireless The Status Tab - System Performance 37 38 38 39 40 41 42 43 Appendix A: Troubleshooting Common Problems and Solutions Frequently Asked Questions 45 45 53 Appendix B: Wireless Security Security Precautions Security Threats Facing Wireless Networks 60 60 60 Appendix C: Upgrading Firmware Appendix D: Windows Help Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter Windows 98SE or Me Instructions Windows 2000 or XP Instructions For the Router's Web-based Utility 63 64 65 65 66 66 Appendix F: Glossary Appendix G: Specifications Appendix H: Warranty Information Appendix I: Regulatory Information Appendix J: Contact Information 67 72 74 75 81 Wireless-G Broadband Router with SRX400 List of Figures Figure 3-1: The Router's Side Panel Figure 3-2: The Router's LEDs Figure 4-1: Connect a PC Figure 4-2: Connect the Modem Figure 4-3: Connect the Power Figure 4-4: Router's Stand Figure 4-5: Wall-Mount Measurements Figure 5-1: Password Screen Figure 5-2: Setup Tab - Basic Setup Figure 5-3: DHCP Connection Type Figure 5-4: Static IP Connection Type Figure 5-5: PPPoE Connection Type Figure 5-6: PPTP Connection Type Figure 5-7: Telstra BigPond Connection Type Figure 5-8: Optional Settings Figure 5-9: Router IP Figure 5-10: Network Address Server Settings Figure 5-11: Time Setting Figure 5-12: Setup Tab - DDNS Figure 5-13: Setup Tab - MAC Address Clone Figure 5-14: Setup Tab - Advanced Routing Figure 5-15: Setup Tab - Advanced Routing - NAT Mode Figure 5-16: Setup Tab - Advanced Routing - NAT Mode - Routing Table Figure 5-17: Wireless Tab - Basic Wireless Settings Figure 5-18: Wireless Tab - Wireless Security (WPA/WPA Personal) Figure 5-19: Wireless Tab - Wireless Security (WPA/WPA2 Enterprise) Figure 5-20: Wireless Tab - Wireless Security (WEP) Figure 5-21: Wireless Tab - Wireless MAC Filter Figure 5-22: Wireless MAC Filter - Networked Computers Figure 5-23: Wireless Tab - Advanced Wireless Settings 6 7 8 8 8 9 9 10 11 11 12 12 13 13 14 14 15 15 16 17 18 18 19 20 21 21 22 23 23 24 Wireless-G Broadband Router with SRX400 Figure 5-24: Security Tab - Firewall Figure 5-25: Access Restrictions Tab - Internet Access Figure 5-26: Internet Policy Summary Figure 5-27: List of PCs Figure 5-28: Port Services Figure 5-29: Applications and Gaming Tab - Port Range Forward Figure 5-30: Applications and Gaming Tab - Port Triggering Figure 5-31: Applications and Gaming Tab - DMZ Figure 5-32: Applications and Gaming Tab - QoS (Add a New Application Figure 5-33: QoS - Voice Device Figure 5-34: QoS - Online Game Figure 5-35: Administration Tab - Management Figure 5-36: Administration Tab - Log Figure 5-37: Administration Tab - Diagnostics Figure 5-38: Administration Tab - Factory Defaults Figure 5-39: Administration Tab - Firmware Upgrade Figure 5-40: Administration Tab - Config Management Figure 5-41: Status Tab - Router Figure 5-42: Status Tab - Local Network Figure 5-43: DHCP Active IP Table Figure 5-44: Status Tab - Wireless Figure 5-45: Status Tab - System Performance Figure C-1: Upgrade Firmware Figure E-1: IP Configuration Screen Figure E-2: MAC Address/Adapter Address Figure E-3: MAC Address/Physical Address Figure E-4: MAC Address Clone Figure E-5: Wireless MAC Filter List 26 27 27 28 28 29 30 30 31 32 32 34 36 37 38 38 39 40 41 41 42 43 63 65 65 65 66 66 Wireless-G Broadband Router with SRX400 Chapter 1: Introduction Welcome Thank you for choosing the Linksys Wireless-G Broadband Router with SRX400. The Router will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and securely. How does the Router do all of this? A router is a device that allows access to an Internet connection over a network. When you use the Router, this access can be shared over the four switched ports or via the wireless network. The Wireless-G Broadband Router with SRX400 combines smart antenna technology with standards-based Wireless-G (802.11g) networking. By overlaying the signals of two Wireless-G compatible radios, the "Multiple In, Multiple Out" (MIMO) technology effectively doubles the data rate. Unlike ordinary wireless networking technologies that are confused by signal reflections, MIMO actually uses these reflections to increase the range and reduce "dead spots" in the wireless coverage area. The robust signal travels farther, maintaining wireless connections up to 3 times farther than standard Wireless-G. With SRX, the farther away you are, the more speed advantage you get, and SRX400 works great with standard Wireless-G and -B equipment, and other flavors of Linksys SRX. But when both ends of the wireless link are SRX400, the router can increase the throughput even more by using twice as much radio band, yielding speeds up to 10 times as fast as standard Wireless-G. But unlike other speed-enhanced technologies, SRX400 can dynamically enable this double-speed mode for SRX400 devices, while still connecting to non-SRX400 wireless devices at their respective fastest speeds. And SRX400 is a "good neighbor", always checking for other wireless devices in the area before gobbling up the radio band. In addition, the Router can encode all wireless transmissions with industrial-strength WPA encryption to help protect your data and privacy. The whole network is protected by a Stateful Packet Inspection (SPI) firewall and NAT technology. All of these security features, as well as full configurability, are accessed through the easy-touse, browser-based utility. But what does all of this mean? Networks are useful tools for sharing computer resources. You can access one printer from different computers and access data located on another computer's hard drive. Networks are even used for playing multiplayer video games. So, networks are not only useful in homes and offices, they can also be fun. mbps: one million bits per second; a unit of measurement for data transmission browser: an application program that provides a way to look at and interact with all the information on the World Wide Web. lan (Local Area Network): The computers and networking products that make up the network in your home or office 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. Chapter 1: Introduction Welcome 1 Wireless-G Broadband Router with SRX400 PCs on a wired network create a Local Area Network. They are connected with Ethernet cables, which is why the network is called "wired". PCs equipped with wireless cards or adapters can communicate without cumbersome cables. By sharing the same wireless settings, within their transmission radius, they form a wireless network. The Router bridges wireless networks of both 802.11b and 802.11g standards and wired networks, allowing them to communicate with each other. With your networks all connected, wired, wireless, and the Internet, you can now share files and Internet access--and even play games. All the while, the Router protects your networks from unauthorized and unwelcome users. You should always use the Setup CD-ROM when you first install the Router. If you do not wish to run the Setup Wizard on the Setup CD-ROM, then use the instructions in this Guide to help you connect the Router, set it up, and configure it to bridge your different networks. These instructions should be all you need to get the most out of the Wireless-G Broadband Router with SRX400. What's in this Guide? This user guide covers the steps for setting up and using the Wireless-G Broadband Router with SRX400. · Chapter 1: Introduction This chapter describes the Router's applications and this User Guide. · Chapter 2: Planning Your Wireless Network This chapter describes the basics of wireless networking. · Chapter 3: Getting to Know the Wireless-G Broadband Router with SRX400 This chapter describes the Router's physical features. · Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 This chapter instructs you on how to connect the Router to your network. · Chapter 5: Configuring the Wireless-G Broadband Router with SRX400 This chapter explains how to use the Router's Web-Based Utility. · Appendix A: Troubleshooting This appendix describes some problems and solutions, as well as frequently asked questions, regarding installation and use of the Wireless-G Broadband Router. Chapter 1: Introduction What's in this Guide? 2 Wireless-G Broadband Router with SRX400 · Appendix B: Wireless Security This appendix explains the risks of wireless networking and some solutions to reduce the risks. · Appendix C: Upgrading Firmware This appendix instructs you on how to upgrade the Router's firmware should you need to do so. · Appendix D: Windows Help This appendix describes how you can use Windows Help for instructions about networking, such as installing the TCP/IP protocol. · Appendix E: Finding the MAC Address and IP Address for your Ethernet Adapter This appendix describes how to find the MAC address for your computer's Ethernet adapter so you can use the Router's MAC filtering and/or MAC address cloning feature. · Appendix F: Glossary This appendix gives a brief glossary of terms frequently used in networking. · Appendix G: Specifications This appendix provides the Router's technical specifications. · Appendix H: Warranty Information This appendix supplies the Router's warranty information. · Appendix I: Regulatory Information This appendix supplies the Router's regulatory information. · Appendix J: Contact Information This appendix provides contact information for a variety of Linksys resources, including Technical Support. Chapter 1: Introduction What's in this Guide? 3 Wireless-G Broadband Router with SRX400 Chapter 2: Planning Your Wireless Network Network Topology A wireless local area network is exactly like a regular local area network (LAN), except that each computer in the wireless network uses a wireless device to connect to the network. Computers in a wireless network share the same frequency channel and SSID, which is an identification name shared by the wireless devices belonging to the same wireless network. network: a series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users. ssid: your wireless network's name. ad-hoc: a group of wireless devices communicating directly to each other (peer-to-peer) without the use of an access point. Infrastructure: a wireless network that is bridged to a wired network via an access point. adapter: a device that adds network functionality to your PC ethernet: IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium access point: a device that allows wirelessequipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network. Ad-Hoc versus Infrastructure Mode Unlike wired networks, wireless networks have two different modes in which they may be set up: infrastructure and ad-hoc. An infrastructure configuration is a wireless and wired network communicating to each other through an access point. An ad-hoc configuration is wireless-equipped computers communicating directly with each other. Choosing between these two modes depends on whether or not the wireless network needs to share data or peripherals with a wired network or not. If the computers on the wireless network need to be accessible by a wired network or need to share a peripheral, such as a printer, with the wired network computers, the wireless network should be set up in Infrastructure mode. The basis of Infrastructure mode centers around a wireless router or an access point, which serves as the main point of communications in a wireless network. The Router transmits data to PCs equipped with wireless network adapters, which can roam within a certain radial range of the Router. You can arrange the Router and multiple access points to work in succession to extend the roaming range, and you can set up your wireless network to communicate with your Ethernet hardware as well. If the wireless network is relatively small and needs to share resources only with the other computers on the wireless network, then the Ad-Hoc mode can be used. Ad-Hoc mode allows computers equipped with wireless transmitters and receivers to communicate directly with each other, eliminating the need for a wireless router or access point. The drawback of this mode is that in Ad-Hoc mode, wireless-equipped computers are not able to communicate with computers on a wired network. And, of course, communication between the wirelessequipped computers is limited by the distance and interference directly between them. Network Layout The Wireless-G Broadband Router has been specifically designed for use with both your 802.11b and 802.11g products. Now, products using these standards can communicate with each other. Chapter 2: Planning Your Wireless Network Network Topology 4 Wireless-G Broadband Router with SRX400 The Wireless-G Broadband Router is compatible with all 802.11b and 802.11g adapters, such as the notebook adapters for your laptop computers, PCI adapters for your desktop PCs, and USB adapters when you want to enjoy USB connectivity. The Router will also communicate with the Wireless-G PrintServer, as well as 802.11b and 802.11g wireless Ethernet bridges. When you wish to connect your wireless network with your wired network, you can use the Wireless-G Broadband Router's four Ethernet ports. To add more ports, any of the Wireless-G Broadband Router's Ethernet ports can be connected to any of Linksys's switches. With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at www.linksys.com for more information about products that work with the Wireless-G Broadband Router with SRX400. Chapter 2: Planning Your Wireless Network Network Layout 5 Wireless-G Broadband Router with SRX400 Chapter 3: Getting to Know the Wireless-G Broadband Router with SRX400 The Router's Ports and Reset Button The Router's ports and Reset button are located on one of the side panels. port: the connection point on a computer or networking device used for plugging in cables or adapters Figure 3-1: The Router's Side Panel ETHERNET 1, 2, 3, 4 Color-coded yellow, these ports connect the Router to PCs and other Ethernet devices on your network. Color-coded blue, the INTERNET port is where you will connect your broadband Internet connection. There are two ways to reset the Router's factory defaults. Either press the Reset button, which is color-coded red, for approximately five seconds, using a object with a sharp point, such as a ball-point pen, or restore the default settings from the Administration tab - Factory Defaults in the Router's Web-based Utility. Color-coded black, the Power port is where you will connect the power adapter. broadband: an always-on, fast Internet connection INTERNET Reset IMPORTANT: Resetting the Router will erase all of your settings (wireless security, network settings, etc.) and replace them with the factory defaults. Do not reset the Router if you want to retain these settings. Power Chapter 3: Getting to Know the Wireless-G Broadband Router with SRX400 The Router's Ports and Reset Button 6 Wireless-G Broadband Router with SRX400 The Router's LEDs The Router's LEDs, which displays information about network activity, are located on another side panel. Figure 3-2: The Router's LEDs POWER Green. The POWER LED lights up and will stay on while the Router is powered on. When the Router goes through its self-diagnostic mode during every boot-up, this LED will flash. When the diagnostic is complete, the LED will be solidly lit. ETHERNET 1, 2, 3, 4 Green. These numbered LEDs, corresponding with the numbered ports on the Router's back panel, serve two purposes. If the LED is continuously lit, the Router is successfully connected to a device through that port. If the LED is flashing, that port is actively transmitting or receiving data. Green. The WIRELESS LED lights up whenever there is a successful wireless connection. If the LED is flashing, the Router is actively sending or receiving data over the wireless network. Green. The DMZ LED indicates when the DMZ function is being used. This LED will remain lit as long as DMZ is enabled. Green. The INTERNET LED lights up when there is a connection made through the Internet port. If the LED is flashing, that port is actively transmitting or receiving data. dmz: removes the Router's firewall protection from one PC, allowing it to be "seen" from the Internet WIRELESS DMZ INTERNET Chapter 3: Getting to Know the Wireless-G Broadband Router with SRX400 The Router's LEDs 7 Wireless-G Broadband Router with SRX400 Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 Overview Linksys recommends using the Setup Wizard on the Setup CD-ROM for first-time installation of the Router. For advanced users, you may follow the instructions in this chapter, and then configure the Router through its Webbased Utility (refer to "Chapter 5: Configuring the Wireless-G Broadband Router"). Hardware Installation for Connection to Your Broadband Modem 1. Power down your network devices. 2. Locate an optimum location for the Router. The best place for the Router is usually at the center of your wireless network, with line of sight to all of your mobile stations. 3. Fix the direction of the antennas. Try to place the Router in a position that will best cover your wireless network. Normally, the higher you place the antennas, the better the performance will be. 4. Connect your network PCs or Ethernet devices to the Router's yellow Ethernet ports using standard Ethernet network cabling. 5. Connect a standard Ethernet network cable to the Router's blue Internet port. Then, connect the other end of the Ethernet cable to your cable or DSL broadband modem. 6. Connect the AC power adapter to the Router's Power port and the other end to an electrical outlet. IMPORTANT: Make sure that you use the power adapter that is supplied with the Router. Use of a different power adapter could damage the Router. Figure 4-2: Connect the Modem Figure 4-1: Connect a PC Proceed to the next section, "Placement Options." Figure 4-3: Connect the Power Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 Overview 8 Wireless-G Broadband Router with SRX400 Placement Options There are three ways to place the Router. The first way is to place it horizontally on a surface, so it sits on its four rubber feet. The second way is to stand the Router vertically on a surface (this uses a stand). The third way is to mount it on a wall. The second and third options are explained in further detail below. Stand Option Figure 4-4: Router's Stand 1. Line up the center of the Router's stand with the center of the Router's labeled edge. 2. Insert the Router into the stand. Proceed to "Chapter 5: Configuring the Wireless-G Broadband Router." There are three ways to place the Router. The first way is to place it horizontally on a surface, so it sits on its four rubber feet. The second way is to stand the Router vertically on a surface (this uses an optional stand). The third way is to mount it on a wall. The second and third options are explained in further detail below. 60 mm (2.36 inches) Wall-Mount Option The Router has two wall-mount slots on its back panel. 1. Determine where you want to mount the Router. 2. Drill two holes into the wall. Make sure the holes are 60 mm (2.36 inches) apart. 3. Insert a screw into each hole, and leave 5 mm (0.2 inches) of its head exposed. 4. Maneuver the Router so the wall-mount slots line up with the two screws. 5. Place the wall-mount slots over the screws and slide the Router down until the screws fit snugly into the wallmount slots. Proceed to "Chapter 5: Configuring the Wireless-G Broadband Router." Figure 4-5: Wall-Mount Measurements Chapter 4: Connecting the Wireless-G Broadband Router with SRX400 Placement Options 9 Wireless-G Broadband Router with SRX400 Chapter 5: Configuring the Wireless-G Broadband Router Overview You should always use the Setup CD-ROM when first installing the Router. If you do not wish to run the Setup Wizard on the Setup CD-ROM, you can use the Web-based Utility to configure the Router. For advanced users, you may configure the Router's advanced settings through the Web-based Utility. 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 Router. For a basic network setup, most users will use these two screens of the Utility: · Basic Setup. On the Basic Setup screen, enter the settings provided by your ISP. · Management. Click the Administration tab and then the Management tab. The Router's default password is admin. To secure the Router, change the Password from its default. There are seven main tabs: Setup, Wireless, Security, Access Restrictions, Applications & Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs. To access the Web-based Utility, launch Internet Explorer or Netscape Navigator, and enter the Router's default IP address, 192.168.1.1, in the Address field. Then, press Enter. A password request page will appear. (Non-Windows XP users will see a similar screen.) Leave the User Name field blank. The first time you open the Web-based Utility, use the default password admin. (You can set a new password from the Administration tab's Management screen.) Click the OK button to continue. NOTE: When first installing the Router, you should use the Setup Wizard on the Setup CD-ROM. If you want to configure advanced settings, use this chapter to learn about the Web-based Utility. HAVE YOU: Enabled TCP/IP on your PCs? PCs communicate over the network with this protocol. Refer to "Appendix D: Windows Help" for more information on TCP/IP. isp: your internet provider Figure 5-1: Password Screen Chapter 5: Configuring the Wireless-G Broadband Router Overview 10 Wireless-G Broadband Router with SRX400 The Setup Tab - Basic Setup The first screen that appears displays the Setup tab. This allows you to change the Router's general settings. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Internet Setup The Internet Setup section configures the Router to your Internet connection. Most of this information can be obtained through your ISP. Internet Connection Type Choose the type of Internet connection your ISP provides from the drop-down menu. · Automatic Configuration - DHCP. By default, the Router's Internet Connection Type is set to Automatic Configuration - DHCP, which should be kept only if your ISP supports DHCP or you are connecting through a dynamic IP address. Figure 5-2: Setup Tab - Basic Setup Figure 5-3: DHCP Connection Type Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Basic Setup 11 Wireless-G Broadband Router with SRX400 · Static IP. If you are required to use a permanent IP address to connect to the Internet, select Static IP. Internet IP Address. This is the Router's IP address, when seen from the Internet. Your ISP will provide you with the IP Address you need to specify here. Subnet Mask. This is the Router's Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask. Gateway. Your ISP will provide you with the Gateway Address, which is the ISP server's IP address. Static DNS 1-3. Your ISP will provide you with at least one DNS (Domain Name System) Server IP Address. static ip address: a fixed address assigned to a computer or device connected to a network. · PPPoE. Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoE. If they do, you will have to enable PPPoE. User Name and Password. Enter the User Name and Password provided by your ISP. Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the radio button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates. Keep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the radio button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds. subnet mask: an address code that determines the size of the network Figure 5-4: Static IP Connection Type Figure 5-5: PPPoE Connection Type pppoe: a type of broadband connection that provides authentication (username and password) in addition to data transport Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Basic Setup 12 Wireless-G Broadband Router with SRX400 · PPTP. Point-to-Point Tunneling Protocol (PPTP) is a service that applies to connections in Europe only. Specify Internet IP Address. This is the Router's IP address, as seen from the Internet. Your ISP will provide you with the IP Address you need to specify here. Subnet Mask. This is the Router's Subnet Mask, as seen by users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask. Gateway. Your ISP will provide you with the Gateway Address. Figure 5-6: PPTP Connection Type User Name and Password. Enter the User Name and Password provided by your ISP. Connect on Demand: Max Idle Time. You can configure the Router to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Router to automatically re-establish your connection as soon as you attempt to access the Internet again. If you wish to activate Connect on Demand, click the radio button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates. Keep Alive Option: Redial Period. If you select this option, the Router will periodically check your Internet connection. If you are disconnected, then the Router will automatically re-establish your connection. To use this option, click the radio button next to Keep Alive. In the Redial Period field, you specify how often you want the Router to check the Internet connection. The default Redial Period is 30 seconds. · Telstra BigPond. Telstra BigPond is a service that applies to connections in Australia only. User Name and Password. Enter the User Name and Password provided by your ISP. Heart Beat Server. This is the IP address that the Router has, when seen from the Internet. Your ISP will provide you with the IP Address you need to specify here. Figure 5-7: Telstra BigPond Connection Type Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Basic Setup 13 Wireless-G Broadband Router with SRX400 Optional Settings Some of these settings may be required by your ISP. Verify with your ISP before making any changes. Router Name. In this field, you can type a name of up to 39 characters to represent the Router. Host Name and Domain Name. These fields allow you to supply a host and domain name for the Router. Some ISPs, usually cable ISPs, require these names as identification. You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, leaving these fields blank will work. MTU. MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission. The default setting, Manual, allows you to enter the largest packet size that will be transmitted. The recommended size, entered in the Size field, is 1492. You should leave this value in the 1200 to 1500 range. To have the Router select the best MTU for your Internet connection, select Auto. Figure 5-8: Optional Settings packet: a unit of data sent over a network Network Setup The Network Setup section changes the settings on the network connected to the Router's Ethernet ports. Wireless setup is performed through the Wireless tab. Router IP This presents both the Router's IP Address and Subnet Mask as seen by your local network. Figure 5-9: Router IP Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Basic Setup 14 Wireless-G Broadband Router with SRX400 Network Address Server Settings (DHCP) The settings allow you to configure the Router's Dynamic Host Configuration Protocol (DHCP) server function. The Router can be used as a DHCP server for your network. A DHCP server automatically assigns an IP address to each computer on your network. If you choose to enable the Router's DHCP server option, you must configure all of your network PCs to connect to a DHCP server (the Router), and make sure there is no other DHCP server on your network. DHCP Server. DHCP is enabled by factory default. If you already have a DHCP server on your network, or you don't want a DHCP server, then click the Disable radio button (no other DHCP features will be available). Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. Because the Router's default IP address is 192.168.1.1, the Starting IP Address must be 192.168.1.2 or greater, but smaller than 192.168.1.253. The default Starting IP Address is 192.168.1.100. Maximum Number of DHCP Users. Enter the maximum number of PCs that you want the DHCP server to assign IP addresses to. This number cannot be greater than 253. The default is 50. Client Lease Time. The Client Lease Time is the amount of time a network user will be allowed connection to the Router with their current dynamic IP address. Enter the amount of time, in minutes, that the user will be "leased" this dynamic IP address. After the time is up, the user will be automatically assigned a new dynamic IP address. The default is 0 minutes, which means one day. IP Address Range. The range of available IP addresses is displayed here. Static DNS 1-2. The Domain Name System (DNS) is how the Internet translates domain or website names into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. If you wish to use another, type that IP Address in one of these fields. Figure 5-10: Network Address Server Settings Time Setting Change the time zone in which your network functions from this pull-down menu. (You can even automatically adjust for daylight savings time.) Then, check Automatically adjust clock for daylight saving changes. Figure 5-11: Time Setting Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Basic Setup 15 Wireless-G Broadband Router with SRX400 The Setup Tab - DDNS The Router 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 Router. Before you can use this feature, you need to sign up for DDNS service at www.dyndns.org, a DDNS service provider. DDNS DDNS Service. To use DDNS, select DynDNS.org. If you do not want to use DDNS, keep the default, Disable. User Name. Enter the User Name for your DDNS account Password. Enter the Password for your DDNS account. Host Name. This is the DDNS URL assigned by the DDNS service. Internet IP Address. This displays the Router's current IP Address as seen on the Internet. Status. This displays the status of the DDNS connection. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. ddns: allows the hosting of a website, FTP server, or e-mail server with a fixed domain name (e.g., www.xyz.com) on a dynamic IP address connection type. Figure 5-12: Setup Tab - DDNS Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - DDNS 16 Wireless-G Broadband Router with SRX400 The Setup Tab - MAC Address Clone A MAC address is a 12-digit code assigned to a unique piece of hardware for identification. Some ISPs will require you to register a MAC address in order to access the Internet. If you do not wish to re-register the MAC address with your ISP, you may assign the MAC address you have currently registered with your ISP to the Router with the MAC Address Clone feature. MAC Enable/Disable. To have the MAC Address cloned, click the radio button beside Enable. User Defined Entry. Enter the MAC Address registered with your ISP here. Clone Your PC's MAC. Clicking this button will clone the MAC address of your registered PC. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-13: Setup Tab - MAC Address Clone mac address: the unique address that a manufacturer assigns to each networking device. Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - MAC Address Clone 17 Wireless-G Broadband Router with SRX400 The Setup Tab - Advanced Routing This tab is used to set up the Router's advanced functions. NAT Mode allows you to select the type(s) of advanced functions you use. Static Routing sets up a fixed route to another network destination. Advanced Routing NAT Mode Select the mode in which this Router will function. If this Router is hosting your network's connection to the Internet, select Enable. If another Router exists on your network, select Disable, which will disable the DHCP server on this Router. Dynamic Routing With Dynamic Routing you can enable the Router to automatically adjust to physical changes in the network's layout. The Router, using the RIP protocol, determines the network packets' route based on the fewest number of hops between the source and the destination. The RIP protocol regularly broadcasts routing information to other routers on the network. RIP. To use dynamic routing, click the Enable radio button. Receive RIP Version. To use dynamic routing for reception of network data, select the protocol you want: Both RIP v1 and v2, RIPv1, or RIPv2. If you do not want to use this feature, select None. Transmit RIP Version. To use dynamic routing for transmission of network data, select the protocol you want: Both RIP v1 and v2, RIPv1, or RIPv2. If you do not want to use this feature, select None. Figure 5-14: Setup Tab - Advanced Routing default gateway: a device that forwards Internet traffic from your local area network Static Routing To set up a static route between the Router and another network, select a number from the Select set number drop-down list. (A static route is a pre-determined pathway that network information must travel to reach a specific host or network.) Enter the information described below to set up a new static route. (Click the Delete This Entry button to delete a static route.) Enter Route Name. Enter a name for the Route here, using a maximum of 25 alphanumeric characters. Destination LAN IP. The Destination LAN IP is the address of the remote network or host to which you want to assign a static route. Figure 5-15: Setup Tab - Advanced Routing - NAT Mode Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Advanced Routing 18 Wireless-G Broadband Router with SRX400 Subnet Mask. The Subnet Mask determines which portion of a Destination LAN IP address is the network portion, and which portion is the host portion. Default Gateway. This is the IP address of the gateway device that allows for contact between the Router and the remote network or host. Interface. This interface tells you whether the Destination IP Address is on the LAN & Wireless (Ethernet and wireless networks), the WAN (Internet), or Loopback (a dummy network in which one PC acts like a network-- necessary for certain software programs). Click the Show Routing Table button to view the Static Routes you've already set up. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-16: Setup Tab - Advanced Routing - NAT Mode - Routing Table Chapter 5: Configuring the Wireless-G Broadband Router The Setup Tab - Advanced Routing 19 Wireless-G Broadband Router with SRX400 The Wireless Tab - Basic Wireless Settings The basic settings for wireless networking are set on this screen. Wireless Network Wireless Network Mode. From this drop-down menu, you can select the wireless standards running on your network. If you have both 802.11g and 802.11b devices in your network, keep the default setting, Mixed. If you have only 802.11g devices, select G-Only. If you do not have any 802.11g and 802.11b devices in your network, select Disable. SRX400 works automatically with Mixed or G-Only mode, providing the added bonus of increased speed across your entire network and even greater speed when using SRX-enabled products only. Wireless Network Name (SSID). The SSID is the network name shared among all points in a wireless network. The SSID must be identical for all devices in the wireless network. It is case-sensitive and must not exceed 32 characters (use any of the characters on the keyboard). Make sure this setting is the same for all points in your wireless network. For added security, you should change the default SSID (linksys) to a unique name. Wireless Channel. Select the appropriate channel from the list provided to correspond with your network settings. All devices in your wireless network must be broadcast on the same channel in order to function correctly and to avoid interference with other wireless items in your home. In most cases, you should keep the default, Auto, so the Router will automatically use the channel that has the least activity. Adaptive Channel Expansion. This feature increases the RF (radio frequency) bandwidth, so data rates are increased. The existing 20 MHz bandwidth is increased to up to 40 MHz by combining adjacent channels. In most cases, keep the default setting, Auto, so the Router automatically adjusts the increase depending on the channels available. Wireless SSID Broadcast. When wireless clients survey the local area for wireless networks to associate with, they will detect the SSID broadcast by the Router. To broadcast the Router's SSID, keep the default setting, Enable. To be more secure and not broadcast the Router's SSID, then select Disable. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-17: Wireless Tab - Basic Wireless Settings Chapter 5: Configuring the Wireless-G Broadband Router The Wireless Tab - Basic Wireless Settings 20 Wireless-G Broadband Router with SRX400 The Wireless Tab - Wireless Security The Wireless Security settings configure the security of your wireless network. There are five wireless security mode options supported by the Router: WPA-Personal, WPA2 Personal, WPA Enterprise, WPA2 Enterprise, and WEP. (WPA stands for Wi-Fi Protected Access, WEP stands for Wired Equivalent Privacy, and WPA Enterprise uses a RADIUS (Remote Authentication Dial-In User Service) server. WPA is a security standard stronger than WEP encryption. WPA2 is stronger than WPA. These options are briefly discussed here. For detailed instructions on configuring wireless security for the Router, turn to "Appendix B: Wireless Security." Wireless Security Select WPA/WPA2 Personal, WPA/WPA2 Enterprise, or WEP from the Security Mode drop-down menu. Then proceed to the appropriate instructions. If you do not want to enable wireless security, select Disable. IMPORTANT: If you are using wireless security, always remember that each device in your wireless network MUST use the same wireless security method and shared key, or else the network will not function correctly. You may mix between WPA and WPA2 Personal or WPA and WPA2 Enterprise, but not between Personal and Enterprise, Personal and WEP, or Enterprise and WEP. Figure 5-18: Wireless Tab - Wireless Security (WPA/WPA Personal) encryption: encoding data transmitted in a network WPA/WPA2 Personal. Two WPA Personal options are available. To select WPA or WPA2 Personal, select Enable from the drop-down menu next to the desired option. WPA/WPA2 Personal gives you two encryption methods, TKIP and AES, with dynamic encryption keys. Select the type of algorithm, TKIP or AES. Enter a Personal Key of 8-63 characters. Then enter a Group Key Renewal period, which instructs the Router how often it should change the encryption keys. WPA/WPA2 Enterprise. This option features WPA/WPA2 used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Router.) Two WPA Enterprise options are available. To select WPA or WPA2 Enterprise, select Enable from the drop-down menu next to the desired option. Then, select the type of WPA algorithm you want to use, TKIP or AES. Enter the RADIUS server's IP Address and port number, along with an Enterprise Key shared between the Router and the server. Last, enter a Key Renewal Timeout, which instructs the Router how often it should change the encryption keys. Figure 5-19: Wireless Tab - Wireless Security (WPA/WPA2 Enterprise) Chapter 5: Configuring the Wireless-G Broadband Router The Wireless Tab - Wireless Security 21 Wireless-G Broadband Router with SRX400 WEP. WEP is a basic encryption method, which is not as secure as WPA or WPA2. To use WEP, select a Default Transmit Key (choose which Key to use), and a level of WEP encryption, 64 bits 10 hex digits or 128 bits 26 hex digits. Then either generate a WEP key using the Passphrase or enter the WEP key manually. IMPORTANT: If you are using wireless security, always remember that each device in your wireless network MUST use the same wireless security method and shared key, or else the network will not function correctly. You may mix between WPA and WPA2 Personal or WPA and WPA2 Enterprise, but not between Personal and Enterprise, Personal and WEP, or Enterprise and WEP. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. For detailed instructions on configuring wireless security for the Router, turn to "Appendix B: Wireless Security." Figure 5-20: Wireless Tab - Wireless Security (WEP) Chapter 5: Configuring the Wireless-G Broadband Router The Wireless Tab - Wireless Security 22 Wireless-G Broadband Router with SRX400 The Wireless Tab - Wireless MAC Filter Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your network. Wireless MAC Filter Wireless MAC Filter. This screen lets you filter wireless users by MAC Address. If you do not wish to filter users by MAC Address, select Disable. Permit Only. Clicking this button will allow wireless access by computers with specified MAC Addresses. There are 50 fields provided in which you can list users, by MAC Address, whose access you wish to allow. Just enter the MAC Address for the PC whose access you want to allow in one of the fields. For a more convenient way to add MAC addresses, click the Select MAC Address From Networked Computers button. The Networked Computers screen will appear. Select the MAC Addresses you want. Then click the Select button. Click the Refresh button if you want to refresh the screen. Click the Close Window button to return to the previous screen. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-21: Wireless Tab - Wireless MAC Filter Figure 5-22: Wireless MAC Filter - Networked Computers Chapter 5: Configuring the Wireless-G Broadband Router The Wireless Tab - Wireless MAC Filter 23 Wireless-G Broadband Router with SRX400 The Wireless Tab - Advanced Wireless Settings This tab is used to set up the Router's advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance. Advanced Wireless Basic Rate Set. The Basic Rate is not the actual rate of data transmission; it is a series of rates at which the Router can transmit. (If you want to specify the Router's rate of data transmission, configure the Transmission Rate setting.) The Router will advertise its Basic Rate Set to the other wireless devices in your network, so they know which rates will be supported. The Router will also advertise that it will automatically select the best rate for transmission. In most cases, you should keep the default setting, Basic Rate Set #2, which includes higher data rates for higher performance. If your wireless computers or other clients cannot associate with the Router, select Basic Rate Set #1, a set of data rates specified by the 802.11b standard. Transmission Rate. The rate of data transmission should be set depending on the speed of your wireless network. You can select from a range of transmission speeds, or you can select Auto to have the Router automatically use the fastest possible data rate and enable the Auto-Fallback feature. Auto-Fallback will negotiate the best possible connection speed between the Router and a wireless client. The default value is Auto. CTS Protection Mode. CTS (Clear-To-Send) Protection Mode should remain set to its default, Auto, so when your Wireless-G products are not able to transmit to the Router in an environment with heavy 802.11b traffic, the CTS Protection Mode will be used. This function boosts the Router's ability to catch all Wireless-G transmissions but will severely decrease performance. Beacon Interval. The default value is 100. Enter a value between 1 and 65,535 milliseconds. The Beacon Interval value indicates the frequency interval of the beacon. A beacon is a packet broadcast by the Router to synchronize the wireless network. DTIM Interval. This value, between 1 and 255, indicates the interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown field informing clients of the next window for listening to broadcast and multicast messages. When the Router has buffered broadcast or multicast messages for associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the beacons and awaken to receive the broadcast and multicast messages. The default value is 1. Fragmentation Threshold. This value specifies the maximum size for a packet before data is fragmented into multiple packets. If you experience a high packet error rate, you may slightly increase the Fragmentation Threshold. Setting the Fragmentation Threshold too low may result in poor network performance. Only minor reduction of the default value is recommended. In most cases, it should remain at its default value of 2346. Figure 5-23: Wireless Tab - Advanced Wireless Settings cts (clear to send): a signal sent by a wireless device, signifying that it is ready to receive data beacon interval: data transmitted on your wireless network that keeps the network synchronized dtim: a message included in data packets that can increase wireless efficiency. fragmentation: breaking a packet into smaller units when transmitting over a network medium that cannot support the original size of the packet. Chapter 5: Configuring the Wireless-G Broadband Router The Wireless Tab - Advanced Wireless Settings 24 Wireless-G Broadband Router with SRX400 RTS Threshold. Should you encounter inconsistent data flow, only minor reduction of the default value, 2347, is recommended. If a network packet is smaller than the preset RTS threshold size, the RTS/CTS mechanism will not be enabled. The Router sends Request to Send (RTS) frames to a particular receiving station and negotiates the sending of a data frame. After receiving an RTS, the wireless station responds with a Clear to Send (CTS) frame to acknowledge the right to begin transmission. The RTS Threshold value should remain at its default value of 2347. Preamble Type. The preamble defines the length of the CRC block for communication between the Router and the roaming Network Card. (High network traffic areas should use the shorter preamble type.) Select the appropriate preamble type, Long (default) or Short. Network Density. This setting is a reflection of the Router's range. Setting the density to Low provides you with a greater range. Setting the density to High gives you a lower range. The default setting is Low. Compression. This feature provides real-time hardware data compression, so pre-compressed frames are used, with no impact on the Router's processor. Data throughput is thereby increased. To use compression, select Enable. The default setting is Disable. Concatenation. This feature allows data from several packets to be merged into one. Overhead is removed, so data throughput is increased, particularly at higher data transmission rates. If you do not want to use concatenation, select Disable. The default setting is Enable. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. rts (request to send): a networking method of coordinating large packets through the RTS Threshold setting. Chapter 5: Configuring the Wireless-G Broadband Router The Wireless Tab - Advanced Wireless Settings 25 Wireless-G Broadband Router with SRX400 The Security Tab - Firewall Use this screen to configure the firewall and VPN pass through settings. Firewall Firewall Protection. Enable this feature to employ Stateful Packet Inspection (SPI) for more detailed review of data packets entering your network environment. Block WAN Request Block WAN Ping. Enable the Block WAN Ping feature by checking the box beside Block WAN Ping and you can prevent your network from being "pinged," or detected, by other Internet users. The Block WAN Ping feature also reinforces your network security by hiding your network ports. Both functions of the Block WAN Ping feature make it more difficult for outside users to work their way into your network. This feature is enabled by default. Figure 5-24: Security Tab - Firewall firewall: a set of related programs located at a network gateway server that protects the resources of a network from users from other networks. VPN Pass Through These settings allow VPN tunnels using PPTP, IPSec, or L2TP protocols to pass through the Router's firewall. PPTP Pass through. Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be tunneled through an IP network. To allow PPTP tunnels to pass through the Router, click Enable. IPSec Pass through. Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Router, click Enable. L2TP Pass through. Layer 2 Tunneling Protocol (L2TP) is the method used to enable Point-to-Point sessions via the Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Router, click Enable. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Chapter 5: Configuring the Wireless-G Broadband Router The Security Tab - Firewall 26 Wireless-G Broadband Router with SRX400 The Access Restrictions Tab - Internet Access The Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as Internet access, designated services, websites, and inbound traffic during specific days and times. Internet Access Internet Access Policy. Access can be managed by a policy. Use the settings on this screen to establish an access policy (after the Save Settings button is clicked). Selecting a policy from the drop-down menu will display that policy's settings. To delete a policy, select that policy's number and click the Delete button. To view all the policies, click the Summary button. (Policies can be deleted from the Summary screen by selecting the policy or policies and clicking the Delete button. To return to the Internet Access tab, click the Close button.) Status. Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu, and click the radio button beside Enable. You can create a policy to manage Internet access. To create an Internet Access policy: 1. Select a number from the Internet Access Policy drop-down menu. Figure 5-25: Access Restrictions Tab - Internet Access 2. To enable this policy, click the radio button beside Enable. 3. Enter a Policy Name in the field provided. 4. Click the Edit List of PCs button to select which PCs will be affected by the policy. The List of PCs screen will appear. You can select a PC by MAC Address or IP Address. You can also enter a range of IP Addresses if you want this policy to affect a group of PCs. After making your changes, click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Then click the Close button. Chapter 5: Configuring the Wireless-G Broadband Router The Access Restrictions Tab - Internet Access Figure 5-26: Internet Policy Summary 27 Wireless-G Broadband Router with SRX400 5. Click the appropriate option, Deny or Allow, depending on whether you want to block or allow Internet access for the PCs you listed on the List of PCs screen (shown in Figure 5-26). 6. Decide which days and what times you want this policy to be enforced. Select the individual days during which the policy will be in effect, or select Everyday. Then enter a range of hours and minutes during which the policy will be in effect, or select 24 Hours. 7. You can filter access to various services accessed over the Internet, such as FTP or telnet, by selecting services from the drop-down menus next to Blocked Services. Then enter the range of ports you want to filter. If the service you want to block is not listed or you want to edit a service's settings, then click the Add/Edit Service button. Then the Port Services screen will appear. To add a service, enter the service's name in the Service Name field. Select its protocol from the Protocol drop-down menu, and enter its range in the Port Range fields. Then click the Add button. To modify a service, select it from the list on the right. Change its name, protocol setting, or port range. Then click the Modify button. To delete a service, select it from the list on the right. Then click the Delete button. When you are finished making changes on the Port Services screen, click the Apply button to save changes. If you want to cancel your changes, click the Cancel button. To close the Port Services screen and return to the Access Restrictions screen, click the Close button. 8. If you want to block websites with specific URL addresses, enter each URL in a separate field next to Website Blocking by URL Address. 9. If you want to block websites using specific keywords, enter each keyword in a separate field next to Website Blocking by Keyword. 10. Click the Save Settings button to save the policy's settings. To cancel the policy's settings, click the Cancel Changes button. ftp: a protocol used to transfer files over a TCP/IP network telnet: a user command and TCP/IP protocol used for accessing remote PCs url: the address of a file located on the Internet Chapter 5: Configuring the Wireless-G Broadband Router The Access Restrictions Tab - Internet Access Figure 5-27: List of PCs Figure 5-28: Port Services 28 Wireless-G Broadband Router with SRX400 The Applications and Gaming Tab - Port Range Forward The Applications and Gaming Tab allows you to set 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.) Port Range Forward To forward a port, enter the necessary information. Port Range Application. In this field, enter the name you wish to give the application. Each name can be up to 12 characters. Start/End. This is the port range. Enter the number that starts the port range under Start and the number that ends the range under End. Protocol. Enter the protocol used for this application, either TCP or UDP, or Both. IP Address. For each application, enter the IP Address of the PC running the specific application. Enable. Click the Enable checkbox to enable port forwarding for the relevant application. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-29: Applications and Gaming Tab - Port Range Forward Chapter 5: Configuring the Wireless-G Broadband Router The Applications and Gaming Tab - Port Range Forward 29 Wireless-G Broadband Router with SRX400 The Applications and Gaming Tab - Port Triggering Port Triggering is used for special applications that can request a port to be opened on demand. For this feature, the Gateway will watch outgoing data for specific port numbers. The Gateway will remember the IP address of the computer that sends a transmission requesting data, so that when the requested data returns through the Gateway, the data is pulled back to the proper computer by way of IP address and port mapping rules. Port Triggering Application. In this field, enter the name you wish to give the application. Triggered Range and Forwarded Range Start Port and End Port. Enter the starting and ending port numbers of the Triggered Range and Forwarded Range. Enable. Click the Enable checkbox to enable port triggering for the relevant application. 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. Figure 5-30: Applications and Gaming Tab - Port Triggering The Applications and Gaming Tab - DMZ The DMZ feature allows one network user to be exposed to the Internet for use of a special-purpose service such as Internet gaming or videoconferencing. DMZ hosting forwards all the ports at the same time to one PC. The Port Range Forward feature is more secure because it only opens the ports you want to have opened, while DMZ hosting opens all the ports of one computer, exposing the computer to the Internet. Any PC whose port is being forwarded must have its DHCP client function disabled and should have a new static IP address assigned to it because its IP address may change when using the DHCP function. DMZ To expose one PC, select Enable. Then, enter the computer's IP address in the DMZ Host IP Address field. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Figure 5-31: Applications and Gaming Tab - DMZ Chapter 5: Configuring the Wireless-G Broadband Router The Applications and Gaming Tab - Port Triggering 30 Wireless-G Broadband Router with SRX400 The Applications and Gaming Tab - QoS Quality of Service (QoS) ensures better service to high-priority types of network traffic, which may involve demanding, real-time applications, such as videoconferencing. QoS (Quality of Service) Wireless ACK Mode. This setting prioritizes QoS for users who also have ACK Mode enabled. Users with Immediate ACK (the default setting) will experience reliable connectivity for normal network use. Burst ACK is faster but less reliable and may also affect long-range wireless performance. The No ACK setting disables the ACK feature. Clients utilizing ACK must have their wireless adapter on the same setting as the Router. This is normally used in a multicast broadcast like video. Do not use this unless you are an advanced user. 802.11e/QoS. QoS will be enabled by default to provide the best performance for your wireless connection. Select Disable to improve performance for a mixed wireless network. Internet Access Priority In this section, you can set priority based on Application, Port Range, or MAC Address. There are four priories you can set: High, Medium, Normal, or Low. Enable/Disable. To limit outgoing bandwidth for the QoS policies in use, select Enable. Otherwise, select Disable. Set Internet Bandwidth. This setting allows you to limit the outgoing bandwidth for the QoS policies in use, so you can control how much bandwidth a particular application is allowed to use. Enter the bandwidth in the field. Application. With this option you can select None, Add a New Application, Voice Device, Online Game, or select from the list of applications you want to set. To create a new entry, select Add a New Application, and refer to the Add a New Application section. Priority. Select the bandwidth priority for the application you selected. Select High, Medium, Normal, or Low for the bandwidth you need for that application. Don't set all applications to High, because this will defeat the purpose of allocating the available bandwidth. If you want to select below normal bandwidth, select Low. Depending on the application, a few attempts may be needed to set the appropriate bandwidth priority. Once you have made your selection, click Add to add to the Summary list. Figure 5-32: Applications and Gaming Tab - QoS (Add a New Application Chapter 5: Configuring the Wireless-G Broadband Router The Applications and Gaming Tab - QoS 31 Wireless-G Broadband Router with SRX400 Add a New Application Enter a Name Category Port Range Enter any name to indicate the name of the entry. Select from Port Range or MAC Address for the Router to use to set the bandwidth priority. If you selected Port Range, then this category will be available. It allows you to enter the port range that the application will be using. For example, if you want to allocate bandwidth for FTP, you can enter 21-21. If you need services for an application that uses from 1000 to 1250, you enter 1000-1250 as your settings. You can have up to three ranges to define for this bandwidth allocation. Port numbers can range from 1 to 65535. Check your application's documentation for details on the service ports used. If you selected MAC Address, then this category will be available. Enter the 12 hexadecimal digit MAC Address to represent the device you want to set as a bandwidth priority. This is a unique identifier for your network device. When the Router identifies the device entered, the Router will allocate the priority set for that entry. Check the device's documentation to obtain the MAC Address. Select the bandwidth priority for the application you selected. Select High, Medium, Normal, or Low for the bandwidth, but don't set all applications to High. Once you have made your selection, click Add to add to the Summary list. Figure 5-33: QoS - Voice Device MAC Address Priority Voice Device Enter the name of your network device in the Enter a Name field, enter its MAC Address, select its priority from the drop-down menu, and click Add. Online Game Selecting Online Game will display the Select a Game drop-down menu, which will list a few common preconfigured games. Select the game from the list, and then select its priority. Summary Priority This displays the bandwidth allocation priority of High, Medium, Normal, or Low, that you set for the application. This displays the application name or the entries you entered to be allocated. This displays the Port Range or MAC Address entered when you added a new application. If a pre-configured application was selected, there will be no valid entry shown in this section. Name Information Figure 5-34: QoS - Online Game 32 Chapter 5: Configuring the Wireless-G Broadband Router The Applications and Gaming Tab - QoS Wireless-G Broadband Router with SRX400 Remove This button allows you to remove the application entry. To remove the entry, click the Remove button. To save the configuration, click the Save Settings button. Otherwise, to cancel, click the Cancel Changes button. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Chapter 5: Configuring the Wireless-G Broadband Router The Applications and Gaming Tab - QoS 33 Wireless-G Broadband Router with SRX400 The Administration Tab - Management This section of the Administration tab allows the network's administrator to manage specific Router functions for access and security. Router Password Local Router Access Router Password and Re-enter to confirm. You can change the Router's password from here. Enter a new Router password and then type it again in the Re-enter to confirm field to confirm. HTTPS Web Access Access Server. HTTP (HyperText Transport Protocol) is the communications protocol used to connect to servers on the World Wide Web. HTTPS is a similar protocol, but it uses SSL (Secured Socket Layer) to encrypt transmitted data, so security is increased. To use HTTPS when you access the Web-based Utility, click the Enable radio button. Remote Router Access Remote Management and Management Port. To access the Router remotely, from outside the network, verify that Enable is selected. Then, enter the port number that will be open to outside access. You will need to enter the Router's password when accessing the Router this way, as usual. Use HTTPS. If you want to require the use of SSL (Secured Socket Layer) to encrypt transmitted data, click the checkbox. Figure 5-35: Administration Tab - Management SNMP The Simple Network Management Protocol (SNMP) provides network administrators with the ability to monitor the status of the Router and receive notification of any critical events as they occur on the network. SNMP. To enable SNMP, select the Enable radio button. To configure SNMP, complete all fields. To disable SNMP, select the Disable radio button. Contact. Enter the name of the network administrator for the Router, and a contact number or e-mail address. Device Name. Enter the name of the Router. Chapter 5: Configuring the Wireless-G Broadband Router The Administration Tab - Management 34 Wireless-G Broadband Router with SRX400 Location. Enter the location of the Router. For example, you could include the name of the building, floor number, and room location, such as Head Office - Floor 5 - Networking 3. Get Community. Enter the password that allows read-only access to the Router's SNMP information. The default name is public. Set Community. Enter the password that allows read/write access to the Router's SNMP information. The default name is private. A name must be entered in this field. SNMP Trap-Community. Enter the password required by the remote host computer that will receive trap messages or notices sent by the Router. SNMP Trap-Destination. Enter the IP address of the remote host computer that will receive the trap messages. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. UPnP UPnP. UPnP allows Windows XP and Windows Me to automatically configure the Router for various Internet applications, such as gaming and videoconferencing. To enable UPnP, check the Enable radio box. Because allowing this may present a risk to security, this feature is disabled by default. Multicast Multicast Pass Through. Multicasting allows for multiple transmissions to specific recipients at the same time. If multicasting is permitted, then the Router will allow IP multicast packets to be forwarded to the appropriate computers. Select Enable to allow multicasting, or Disable to disable this feature. Change these settings as described here and click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. Chapter 5: Configuring the Wireless-G Broadband Router The Administration Tab - Management 35 Wireless-G Broadband Router with SRX400 The Administration Tab - Log When you click the Administration tab, you will see the Log screen. The Log screen provides you with options for system, Firewall, WAN Connection, and New Traffic logs of all incoming and outgoing URLs or IP addresses for your Internet connection. To enable the Router's log function, click the Log button you want to enable and view the log. System Log Show System Log. You can view logs for events relating to your system: Unauthorized Login Attempt, Update Time By NTP Client, and Authorized Login. URL Filter Log Show URL Filter Log. You can view logs for specific types of Internet attacks and events: Syn Flooding, IP Spoofing, Deny Policies, Allow Policies, Content Filtering, ICMP Redirect, TCP Null Scan, Smurf Attack, RIP Detect, UDP Flood, and ICMP flood. Figure 5-36: Administration Tab - Log DoS Log Show DoS Log. You can view incoming connection logs for Failed Connection and Successful Connection. New Connection Log Show New Connection Log. You can view outgoing and incoming traffic logs. Chapter 5: Configuring the Wireless-G Broadband Router The Administration Tab - Log 36 Wireless-G Broadband Router with SRX400 The Administration Tab - Diagnostics The diagnostic tests (Ping and Traceroute) allow you to check the connections of your network components. Ping Test Ping Parameters Ping Target IP or Domain Name, No. of Pings, and Packets Sent. The Ping test will check the status of a connection. To start the test, enter the IP address or domain name of the PC whose connection you wish to test, how many times you wish to test it, and the size of the packet for testing. Then, click the Start Test button. The test field will show if the test was successful. To stop the test, click the Abort Test button. Click the Clear button to clear the field. Traceroute Test Traceroute Parameters IP Address or Domain Name. To test the performance of a connection, enter the IP address or domain name of the PC whose connection you wish to test and click the Start Test button. The test field will show if the test was successful. To stop the test, click the Abort Test button. Click the Clear button to clear the screen. Figure 5-37: Administration Tab - Diagnostics Chapter 5: Configuring the Wireless-G Broadband Router The Administration Tab - Diagnostics 37 Wireless-G Broadband Router with SRX400 The Administration Tab - Factory Defaults Use this screen to reset the Router to its factory default settings. Factory Defaults Restore Factory Defaults. Click the Yes button to reset all configuration settings to their default values, and then click the Save Settings button. Any settings you have saved will be lost when the default settings are restored. This feature is disabled by default. Figure 5-38: Administration Tab - Factory Defaults The Administration Tab - Firmware Upgrade Use this screen to upgrade the Router's firmware. Do not upgrade your firmware unless you are experiencing problems with the Router. For more information about upgrading firmware, refer to "Appendix C: Upgrading Firmware". Upgrade Firmware To upgrade the Router's firmware, first download the firmware file from www.linksys.com. Then extract the file on your computer. Please select a file to upgrade. Enter the name of the file, or click the Browse button to locate the extracted file. Then click the Upgrade button. Figure 5-39: Administration Tab - Firmware Upgrade firmware: the programming code that runs a networking device download: to receive a file transmitted over a network Chapter 5: Configuring the Wireless-G Broadband Router The Administration Tab - Factory Defaults 38 Wireless-G Broadband Router with SRX400 The Administration Tab - Config Management The Config Management screen allows you to backup the Router's settings and restore them later. Backup Configuration Backup. Simply, click the Backup button and save the config file to your hard drive. Restore Configuration Please select a file to restore. When you wish to restore the configuration file, click the Browse button to locate the file. Then click the Restore button. Figure 5-40: Administration Tab - Config Management Chapter 5: Configuring the Wireless-G Broadband Router The Administration Tab - Config Management 39 Wireless-G Broadband Router with SRX400 The Status Tab - Router The Router screen on the Status Tab displays the Router's current status. Depending on the Router's Internet connection type, the status information may differ. Router Information Firmware Version. This is the Router's current firmware version. Loader Version. This shows the Router's BIOS version. NAT. This shows if Network Address Translation (NAT) is enabled for Internet sharing. Current Time. This shows the time, as you set on the Setup Tab. System Up Time. This is the amount of time since the Router was first booted up. Figure 5-41: Status Tab - Router Internet Connection Connection Type. This shows the connection type you set on the Setup Tab. Internet IP Address. Displayed here is the Internet IP Address of the Router. Subnet Mask. Displayed here is the Subnet Mask of the Router. Default Gateway. Displayed here is the IP address of the Default Gateway. DNS IP Address. Displayed here is IP address of the DNS server. MAC Address. This is the Router's MAC Address, as seen by your ISP. DHCP Release and DHCP Renew. These buttons are available if the Router is using the DHCP Client connection type. Click the DHCP Release button to release the Router's IP address. Click the DHCP Renew button to retrieve a new IP address for the Router. Connect and Disconnect. These buttons are available if the Router is using a dial-up style connection, such as PPTP. Click the Connect button to start the Internet connection. Click the Disconnect button to end the Internet connection. Click the Refresh button to update the on-screen information. Help information is shown on the right-hand side of the screen. Chapter 5: Configuring the Wireless-G Broadband Router The Status Tab - Router 40 Wireless-G Broadband Router with SRX400 The Status Tab - Local Network The Local Network screen on the Status Tab displays the status of your network. Local Network MAC Address. This is the Router's MAC Address, as seen on your local, Ethernet network. IP Address. This shows the Router's IP Address, as it appears on your local, Ethernet network. Subnet Mask. When the Router is using a Subnet Mask, it is shown here. DHCP Server. If you are using the Router as a DHCP server, that will be displayed here. Starting IP Address. For the range of IP Addresses used by devices on your local, Ethernet network, the beginning of that range is shown here. Ending IP Address. For the range of IP Addresses used by devices on your local, Ethernet network, the end of that range is shown here. DHCP Client Table. Clicking this button will open a screen to show you which PCs are utilizing the Router as a DHCP server. Figure 5-43: DHCP Active IP Table Click the Refresh button to update the on-screen information. Help information is shown on the right-hand side of the screen. Figure 5-42: Status Tab - Local Network Chapter 5: Configuring the Wireless-G Broadband Router The Status Tab - Local Network 41 Wireless-G Broadband Router with SRX400 The Status Tab - Wireless The Wireless screen on the Status Tab displays the status of your wireless network. Wireless MAC Address. This is the Router's MAC Address, as seen on your local, wireless network. Mode. As selected from the Wireless tab, this will display the wireless mode (Mixed, G-Only, or Disabled) used by the network. SSID. As entered on the Wireless tab, this will display the wireless network name or SSID. Channel. As entered on the Wireless tab, this will display the channel on which your wireless network is broadcasting. Figure 5-44: Status Tab - Wireless Encryption Mode. As selected on the Wireless Security Tab, this will display what type of encryption the Router uses for security. Click the Refresh button to update the on-screen information. Help information is shown on the right-hand side of the screen. Chapter 5: Configuring the Wireless-G Broadband Router The Status Tab - Wireless 42 Wireless-G Broadband Router with SRX400 The Status Tab - System Performance The System Performance screen displays status information about network traffic for the Internet, wireless activities, and wired connectivity. System Performance Internet/Wireless Statistics for the network traffic on the Internet connection and wireless connectivity are shown in two separate columns. IP Address. The IP address of the Router's interface is displayed here. MAC Address. The MAC address of the Router's interface is shown here. Packets Received. The number of packets received are displayed here. Connection. The status of the connection is shown here. Packets Sent. The number of packets sent are displayed here. Bytes Received. The number of bytes received is shown here. Bytes Sent. The number of bytes sent is shown here. Error Packets Received. The number of error packets received is displayed here. Dropped Packets Received. The number of dropped packets received is displayed here. Figure 5-45: Status Tab - System Performance LAN Statistics for the network traffic on each of the four LAN ports are shown in four separate columns. IP Address. The IP address of the Router's interface is displayed here. MAC Address. The MAC address of the Router's interface is shown here. Port 1, 2, 3, 4. This shows the status of the LAN Port connection and speed. Packets Received. The number of packets received is displayed here. Chapter 5: Configuring the Wireless-G Broadband Router The Status Tab - System Performance 43 Wireless-G Broadband Router with SRX400 Packets Sent. The number of packets sent is displayed here. Bytes Received. The number of bytes received is shown here. Bytes Sent. The number of bytes sent is shown here. Error Packets Received. The number of error packets received is displayed here. Dropped Packets Received. The number of dropped packets received is displayed here. Click the Refresh button to update the on-screen information. Help information is shown on the right-hand side of the screen. Chapter 5: Configuring the Wireless-G Broadband Router The Status Tab - System Performance 44