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2.4 GHz Wireless-G

802.11g
Broadband Router with 2 Phone Ports

User Guide

Model No.

WRTP54G

Wireless-G Broadband Router with 2 Phone Ports

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 Guide

Your guide to the Wireless-G Broadband Router with 2 Phone Ports has been designed to make understanding networking with the Router easier than ever. Look for the following items when reading this guide: This exclamation point means there is a caution or warning and is something that could damage your property or the Router. This question mark provides you with a reminder about something you might need to do while using the Router. This checkmark means there is a note of interest and is something you should pay special attention to while using the 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.

WRTP54G-NA-UG-51215B BW

Table of Contents

Chapter 1: Introduction

Welcome Whats in this Guide?
Chapter 2: Planning Your Wireless Network
Network Topology Ad-Hoc versus Infrastructure Mode Network Layout
Chapter 3: Getting to Know the Router
The Back Panel The Front Panel
Chapter 4: Connecting the Router
Overview Connection Instructions Placement Options
Chapter 5: Configuring the Router
Overview How to Access the Web-based Utility 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 Security Tab - VPN Passthrough The Access Restrictions Tab - Filter The Applications & Gaming Tab - Port Range Forwarding The Applications & Gaming Tab - Port Triggering The Applications & Gaming Tab - DMZ The Applications & Gaming Tab - QoS The Administration Tab - Management The Administration Tab - Log The Administration Tab - Factory Defaults The Administration Tab - Diagnostics The Administration Tab - Firmware Upgrade The Status Tab - Local Network The Status Tab - Router The Status Tab - Wireless The Voice Tab
Appendix A: Troubleshooting
Common Problems and Solutions Frequently Asked Questions
Appendix B: Wireless Security
Security Precautions Security Threats Facing Wireless Networks
Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter 81
Windows 98 or Me Instructions Windows 2000 or XP Instructions For the Routers Web-based Utility 82
Appendix D: Windows Help Appendix E: Glossary Appendix F: Specifications Appendix G: Warranty Information Appendix H: Regulatory Information Appendix I: Contact Information

babyTEL Linksys

95 105

105 105

List of Figures
Figure 3-1: Back Panel Figure 3-2: Front Panel Figure 4-1: Router Connection Diagram Figure 4-2: Connect the Modem Figure 4-3: Connect a PC Figure 4-4: Connect the Power Figure 4-5: Connect a Telephone Figure 4-6: Measurement between Wall-Mount Slots Figure 5-1: Routers IP Address Figure 5-2: Router Login Figure 5-3: Setup Tab - Basic Setup (Obtain an IP automatically) Figure 5-4: Static IP Figure 5-5: PPPoE Figure 5-6: Setup Tab - DDNS (DynDNS.org) Figure 5-7: Setup Tab - DDNS (TZO.com) Figure 5-8: Setup Tab MAC Address Clone Figure 5-9: Setup Tab Advanced Routing Figure 5-10: Routing Table Entry List Figure 5-11: Wireless Tab - Basic Wireless Settings 26
Figure 5-12: Wireless Tab - Wireless Security (WPA-Preshared Key) 27 Figure 5-13: Wireless Tab - Wireless Security (WPA-RADIUS) 28 Figure 5-14: Wireless Tab - Wireless Security (RADIUS) 28 Figure 5-15: Wireless Tab - Wireless Security (WEP) 29 Figure 5-16: Wireless Tab - Wireless MAC Filter 30 Figure 5-17: MAC Address Filter List 30 Figure 5-18: Wireless Client MAC List 30 Figure 5-19: Wireless Tab - Advanced Wireless Settings 31 Figure 5-20: Security Tab - Firewall 33 Figure 5-21: Security Tab - VPN Passthrough 34 Figure 5-22: Access Restrictions Tab - Filter Figure 5-23: Filtered MAC Address Figure 5-24: Applications & Gaming Tab - Port Range 37 Forwarding Figure 5-25: Applications & Gaming Tab - Port Triggering 38 Figure 5-26: Applications & Gaming Tab - DMZ 40 Figure 5-27: Applications & Gaming Tab - QoS 41 Figure 5-28: Administration Tab - Management 43 Figure 5-29: Administration Tab - Log 44 Figure 5-30: Administration Tab - Factory Defaults 45

Figure 5-31: Administration Tab -Diagnostics Figure 5-32: Ping Test Figure 5-33: Traceroute Test Figure 5-34: Firmware Upgrade Figure 5-35: Status Tab - Local Network Figure 5-36: DHCP Active IP Table Figure 5-37: Status Tab - Router Figure 5-38: Status Tab - Wireless Figure 5-39: Wireless Client MAC List Figure 5-40: Voice Tab Figure C-1: IP Configuration Screen Figure C-2: MAC/Adapter Address Figure C-3: MAC/Physical Address Figure C-4: MAC Address Clone Figure C-5: MAC Address Filter

Welcome

Thank you for choosing the Linksys Wireless-G Broadband Router with 2 Phone Ports. This Router will allow you to network wirelessly better than ever, sharing Internet access, files and fun, easily and securely. Plus, after you have set up your babyTEL service, you can make phone or fax calls using your Internet connection. How does the Router do all of this? A router is a device that allows access to an Internet connection over a network. With the Wireless-G Broadband Router with 2 Phone Ports, this access can be shared over the four switched ports or via the wireless broadcast at either up to 11Mbps for Wireless-B or up to 54Mbps for Wireless-G. In addition, the WPA standard provides greater security opportunities while the whole network is protected through NAT technology. All of these security features, as well as full configurability, are accessed through the easy-to-use browser-based utility. But what does all of this mean? Networks are useful tools for sharing Internet access and computer resources. Multiple computers can share Internet access, so you dont need more than one high-speed Internet connection. After you have set up your babyTEL account, you can also use your Internet access to make Internet phone or fax calls, even while youre surfing the Internet. Plus, you can access one printer from different computers and access data located on another computers hard drive. Networks are even used for playing multiplayer video games. All the while, the Router protects your networks from unauthorized and unwelcome users. So, networks not only are useful in homes and offices, but also can be fun. PCs on a wired network create a LAN, or Local Area Network. They are connected with Ethernet cables, which is why the network is called wired.
Chapter 1: Introduction Welcome
wpa (wi-fi protected access): a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server. nat (network address translation): NAT technology translated IP addresses of a local area network to a different IP address for the Internet. 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. ethernet: an IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium. 1

ethernet: IEEE standard network protocol that specifies how data is placed on and retrieved from a common transmission medium.
Chapter 2: Planning Your Wireless Network Network Topology
Wireless-G Broadband Router with 2 Phone Ports 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.
access point: a device that allows wireless-equipped computers and other devices to communicate with a wired network. Also used to expand the range of a wireless network.

Network Layout

The Wireless-G Broadband Router with 2 Phone Ports has been specifically designed for use with both your 802.11b and 802.11g products. It 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 Broadband Router will also communicate with the Wireless PrintServer and Wireless Ethernet Bridges. When you wish to connect your wireless network with your wired network, you can use the Broadband Routers four Ethernet network ports. To add more ports, any of the Broadband Router's Ethernet network 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 2 Phone Ports.
Chapter 2: Planning Your Wireless Network Network Layout

The Back Panel

The Routers ports and the Reset button are located on the back panel of the Router.
Figure 3-1: Back Panel Internet Phone1 This Internet port connects to your cable or DSL modem. For your primary babyTEL phone line, the Phone1 port allows you to connect the Router to your phone (or fax machine) using an RJ-11 phone cable (not included). If you have a second babyTEL phone line, the Phone2 port allows you to connect the Router to your second phone (or fax machine) using an RJ-11 phone cable (not included). These four Ethernet ports connect to network devices, such as PCs or more switches. There are two ways to reset the Router to its router factory defaults. Either press the Reset Button for five seconds, or restore the defaults from the Router's Web-based Utility. The Power port is where you will connect the power adapter. NOTE: The Internet port only accepts a straightthrough cable. Do NOT connect a crossover cable to the Internet port. NOTE: If you want to reset the Router to its voice factory default settings, then you will need to use the Routers Webbased Utility and obtain a user name and password available only from babyTEL. Contact babyTEL for more information. 7

Access to the Voice tab is restricted by babyTEL. Contact babyTEL for more information. Figure 5-1: Routers IP Address
How to Access the Web-based Utility
To access the Web-based Utility of the Router, launch Internet Explorer or Netscape Navigator, and enter the Routers default IP address, 192.168.15.1, in the Address field. Press the Enter key. The Login screen will appear asking you for your User name and Password. Enter admin in the User Name and Password fields. Then click the Log In button. Click the Cancel button to exit the Login screen. Make the necessary changes through the Utility. When you have finished making changes to a screen, click the Save Settings button to save the changes, or click the Cancel Changes button to undo your changes. Help information is shown on the right-hand side of a screen. For additional help on a tab, click More.

Figure 5-2: Router Login

Chapter 5: Configuring the Router How to Access the Web-based Utility
The Setup Tab - Basic Setup
The Basic Setup screen is the first screen you see when you access the Web-based Utility.

Internet Setup

The Internet Setup section configures the Router for your Internet connection type. This information can be obtained from your ISP.

Internet Connection Type

The Router supports three connection types: Obtain an IP automatically, Static IP, and PPPoE. Each Basic Setup screen and available features will differ depending on what kind of connection type you select.
Obtain an IP automatically
By default, the Routers Internet Connection Type is set to Obtain an IP automatically, and it should be used only if your ISP supports DHCP or you are connecting through a dynamic IP address. Figure 5-3: Setup Tab - Basic Setup (Obtain an IP automatically)
Chapter 5: Configuring the Router The Setup Tab - Basic Setup

Static IP

If you are required to use a permanent IP address, then select Static IP. IP Address. 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. Subnet Mask. This is the Routers Subnet Mask, as seen by external users on the Internet (including your ISP). Your ISP will provide you with the Subnet Mask. Gateway. Your ISP will provide you with the Default Gateway Address. DNS 1-3. Your ISP will provide you with at least one DNS (Domain Name System) Server IP Address. WINS. The Windows Internet Naming Service (WINS) converts NetBIOS names to IP addresses. If you use a WINS server, enter that servers IP address here. Otherwise, leave this field blank. Figure 5-4: Static IP static ip address: a fixed address assigned to a computer or device connected to a network. subnet mask: an address code that determines the size of the network. default gateway: a device that forwards Internet traffic from your local area network. pppoe: a type of broadband connection that provides authentication (username and password) in addition to data transport.

Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections for end-users. If you use a DSL line, check with your ISP to see if they use PPPoE. If they do, you will have to enable it. User Name and Password. Enter the User Name and Password provided by your ISP.
Wireless-G Broadband Router with 2 Phone Ports Keep Alive and Redial Period. This option keeps your Internet access connected indefinitely, even when it sits idle. If you select this option, the Router will periodically check your Internet connection. If the connection is down, then the Router will automatically re-establish the connection. To use this option, click the radio button next to Keep Alive. The default Redial Period is 45 seconds. When you are finished, click the Save Settings button. Then click the Status tab, and click the Connect button to start the connection.
Figure 5-5: PPPoE NOTE: For DSL users, if you need to enable PPPoE support, remember to remove any PPPoE applications that are installed on your PCs.

Optional Settings

Some of these settings may be required by your ISP. Verify with your ISP before making any changes. Host Name and Domain Name. These fields allow you to supply a host and domain name for the Router. Some 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. The MTU (Maximum Transmission Unit) setting specifies the largest packet size permitted for network transmission. Select Auto to have the Router automatically select the MTU value, or select Manual and enter the value desired. It is recommended that you leave this value in the 1200 to 1500 range. For two Internet connection types, Obtain an IP automatically and Static IP, the MTUs default value is 1500. For PPPoE, the MTUs default value is 1492.
packet: a unit of data sent over a network.

Network Setup

The Network Setup section allows you to change the Routers local network settings.

Router IP

The values for the Routers 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 192.168.15.1. Subnet Mask. The default value is 255.255.255.0.

Figure 5-15: Wireless Tab - Wireless Security (WEP)
The Wireless Tab - Wireless MAC Filter

Wireless MAC Filter

Wireless MAC Filter. If you want to filter wireless access by MAC address, select Enable. Otherwise, select Disable. Click Prevent to block access for the designated computers, or click Permit only to permit access for the designated computers. Click the Update Filter List button, and the Mac Address Filter List screen will appear. Enter the MAC addresses of the computers you want to designate. To see a list of MAC addresses for wireless computers or clients, click the Wireless Client MAC List button. The Wireless Client MAC List screen will list Client Host Names, IP Addresses, and MAC Addresses for your wireless devices. Click the Refresh button to get the most up-to-date information. To add a specific computer to the Mac Address Filter List, click the Enable MAC Filter checkbox and then the Update Filter List button. Click the Close button to return to the MAC Address Filter List screen. On the MAC Address Filter List screen, click the Save Settings button to save this list, or click the Cancel Changes button to remove your entries. 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 5-17: MAC Address Filter List Figure 5-16: Wireless Tab - Wireless MAC Filter
Figure 5-18: Wireless Client MAC List 30
Chapter 5: Configuring the Router The Wireless Tab - Wireless MAC Filter
The Wireless Tab - Advanced Wireless Settings
This tab is used to set up the Routers advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance.
Advanced Wireless Settings
Preamble Type. The preamble defines the length of the CRC block for communication between the Router and the roaming wireless adapters. (High network traffic areas should use the shorter preamble type.) Select the appropriate preamble type for your network. If you are not sure which setting to select, then keep the default setting, Long Preamble. Authentication Type. The default is set to Auto, which allows Open System and Shared Key authentication. For Open System authentication, the sender and the recipient do not use a WEP key for authentication but can use WEP for data encryption. For Shared Key authentication, the sender and recipient use a WEP key for both authentication and data encryption. To only allow Open System authentication, select Open. To only allow Shared Key authentication, select Shared Key. In most cases, you should keep the default setting, Auto, because some clients cannot be configured for Shared Key. CTS Protection Mode. CTS (Clear-To-Send) Protection Mode function boosts the Routers ability to catch all Wireless-G transmissions but will severely decrease performance. Keep the default setting, Auto, so the Router can use this feature as needed, when the Wireless-G products are not able to transmit to the Router in an environment with heavy 802.11b traffic. CTS Protection Type. CTS Protection Type specifies the type of traffic covered by the CTS Protection Mode. Select CTS-only or RTS-CTS from the drop-down menu. If you are not sure which setting to select, then keep the default setting, CTS-only.

Figure 5-19: 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.
Chapter 5: Configuring the Router The Wireless Tab - Advanced Wireless Settings
Wireless-G Broadband Router with 2 Phone Ports Power Level. You can adjust the output power of the Router to get the appropriate coverage for your wireless network. Select the percentage of power you need for your environment. If you are not sure which setting to select, then keep the default setting, Full. Beacon Interval. 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. The default value is 100. DTIM Interval. This 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 3. Fragmentation Length. 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 Length 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. 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. In most cases, keep the default value, 2347. When you have finished making changes on this screen, click the Save Settings button to save the changes, or click the Cancel Changes button to undo your changes. dtim: a message included in data packets that can increase wireless efficiency.

Figure 5-21: Security Tab - VPN Passthrough
Chapter 5: Configuring the Router The Security Tab - VPN Passthrough
The Access Restrictions Tab - Filter
Filters can block specific internal users from accessing the Internet, anonymous Internet requests, and/or multicasting.

Filter IP Address Range

You can create up to five different IP Address filters. To set up a filter, enter the IP address you wish to filter in the field provided. Users who have filtered IP addresses will not be able to access the Internet at all.

Filter Port Range

You can create up to five different Port Range filters. To filter users by network port number, select the protocol you want to filter, TCP, UDP, or Both, from the Protocol drop-down menu. Enter the port numbers you want to filter in the Start and End fields. Users connected to the Router will no longer be able to access any port number listed there.
Figure 5-22: Access Restrictions Tab Filter

Filter MAC Address

This feature blocks computers with specific MAC addresses from going out to the Internet. For information on obtaining a MAC address, go to Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter. To set the MAC filter, click the Edit MAC Filter Setting button. Edit MAC Filter Setting. Click the Edit MAC Filter Setting button. Select the range of MAC address entries in the drop-down box. In each mac field, enter the MAC address you want to filter. Click the Apply button before closing the window. To cancel changes, click the Undo button. Figure 5-23: Filtered MAC Address
Chapter 5: Configuring the Router The Access Restrictions Tab - Filter

Block WAN Requests

Use these features to enhance your networks security and filter multicasting. Block Anonymous Internet Requests. This keeps your network from being pinged or detected and reinforces your network security by hiding your network ports, so it is more difficult for intruders to work their way into your network. Select Enabled to block anonymous Internet requests, or Disabled to allow anonymous Internet requests. Filter Multicast. 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 Enabled to filter multicasting, or Disabled to disable this feature. When you have finished making changes to this screen, click the Save Settings button to save the changes, or click the Cancel Changes button to undo your changes.

For Windows 2000:

A. Click Start, Settings, and Control Panel. Double-click Network and Dial-Up Connections. B. Right-click the Local Area Connection that is associated with the Ethernet adapter you are using, and select the Properties option. C. In the Components checked are used by this connection box, highlight Internet Protocol (TCP/IP), and click the Properties button. Select Use the following IP address option. D. Enter a unique IP address that is not used by any other computer on the network connected to the Router. You can only use an IP address in the ranges 192.168.15.2 to 192.168.15.99 and 192.168.15.151 to 192.168.15.254. E. Enter the Subnet Mask, 255.255.255.0. F. Enter the Default Gateway, 192.168.15.1 (Routers default IP address). G. 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. H. Click the OK button in the Internet Protocol (TCP/IP) Properties window, and click the OK button in the Local Area Connection Properties window. I. Restart the computer if asked.

For Windows XP:

The following instructions assume you are running Windows XP with the default interface. If you are using the Classic interface (where the icons and menus look like previous Windows versions), please follow the instructions for Windows 2000.
Wireless-G Broadband Router with 2 Phone Ports A. Click Start and Control Panel. B. Click the Network and Internet Connections icon and then the Network Connections icon. C. Right-click the Local Area Connection that is associated with the Ethernet adapter you are using, and select the Properties option. D. In the This connection uses the following items box, highlight Internet Protocol (TCP/IP). Click the Properties button. E. Enter a unique IP address that is not used by any other computer on the network connected to the Router. You can only use an IP address in the ranges 192.168.15.2 to 192.168.15.99 and 192.168.15.151 to 192.168.15.254. F. Enter the Subnet Mask, 255.255.255.0. G. Enter the Default Gateway, 192.168.15.1 (Routers default IP address). H. 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. I. Click the OK button in the Internet Protocol (TCP/IP) Properties window. Click the OK button in the Local Area Connection Properties window. 4. I want to test my Internet connection. A. Check your TCP/IP settings.
Refer to Windows Help for details. Make sure Obtain IP address automatically is selected in the settings.

Wireless-G Broadband Router with 2 Phone Ports C. Make sure you are using the right Internet settings. Contact your ISP to see if your Internet connection type is DHCP, Static IP Address, or PPPoE (commonly used by DSL consumers). Please refer to the Basic Setup section of Chapter 5: Configuring the Router for details on Internet Connection Type settings. D. Make sure you use the right cable. Check to see if the Internet LED is solidly lit. E. Make sure the cable connecting from your cable or DSL modem is connected to the Routers Internet port. Verify that the Status page of the Routers Web-based Utility shows a valid IP address from your ISP. F. Turn off the computer, Router, and cable/DSL modem. Wait 30 seconds, and then turn on the Router, cable/DSL modem, and computer. Check the Status tab of the Routers Web-based Utility to see if you get an IP address. 6. I am not able to access the Routers Web-based Utility Setup page. A. Refer to Problem #4, I want to test my Internet connection to verify that your computer is properly connected to the Router. B. Refer to Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter to verify that your computer has an IP Address, Subnet Mask, Gateway, and DNS. C. Set a static IP address on your system; refer to Problem #3: I need to set a static IP address on a PC. D. Refer to Problem #12: I am a PPPoE user, and I need to remove the proxy settings or the dial-up pop-up window. 7. I cant get my Virtual Private Network (VPN) to work through the Router. Access the Routers web interface by going to http://192.168.15.1 or the IP address of the Router, and go to the Security => VPN Passthrough tab. Make sure you have IPsec passthrough and/or PPTP passthrough enabled. VPNs that use IPSec with the ESP (Encapsulation Security Payload known as protocol 50) authentication will work fine. At least one IPSec session will work through the Router; however, simultaneous IPSec sessions may be possible, depending on the specifics of your VPNs.
Wireless-G Broadband Router with 2 Phone Ports VPNs that use IPSec and AH (Authentication Header known as protocol 51) are incompatible with the Router. AH has limitations due to occasional incompatibility with the NAT standard. Change the IP address for the Router to another subnet to avoid a conflict between the VPN IP address and your local IP address. For example, if your VPN server assigns an IP address 192.168.15.X (X is a number from 1 to 254) and your local LAN IP address is 192.168.15.X (X is the same number used in the VPN IP address), the Router will have difficulties routing information to the right location. If you change the Routers IP address to 192.168.2.1, that should solve the problem. Change the Routers IP address through the Basic Setup tab of the Web-based Utility. If you assigned a static IP address to any computer or network device on the network, you need to change its IP address accordingly to 192.168.2.Y (Y being any number from 1 to 254). Note that each IP address must be unique within the network. Your VPN may require port 500/UDP packets to be passed to the computer that is connecting to the IPSec server. Refer to Problem #9, I need to set up online game hosting or use other Internet applications for details. Check the Linksys website at www.linksys.com for more information. 8. I need to set up a server behind my Router. To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web; port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the documentation provided with the server you installed. Follow these steps to set up port forwarding through the Routers Web-based Utility. We will be setting up web, ftp, and mail servers. A. Access the Routers Web-based Utility by going to http://192.168.15.1 or the IP address of the Router. Go to the Applications & Gaming => Port Range Forwarding tab. B. Enter any name you want to use for the Application. 60

Wireless-G Broadband Router with 2 Phone Ports C. Enter the port range of the service you are using. For example, if you have a web server, you would enter the range 80 to 80. D. Select the protocol you will be using, TCP or UDP, or select Both. E. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web servers Ethernet adapter IP address is 192.168.15.100, you would enter 100 in the field provided. Check Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter for details on getting an IP address. F. Check the Enabled option for the port services you want to use. Consider the examples below:

Application

Web server FTP server SMTP (outgoing) POP3 (incoming)

Start and End

80 to to to to 110

Protocol

Both TCP Both Both

IP Address

192.168.15.100 192.168.15.101 192.168.15.102 192.168.15.102

Enabled

X X X X
When you have completed the configuration, click the Save Settings button. 9. I need to set up online game hosting or use other Internet applications. If you want to play online games or use Internet applications, most will work without doing any port forwarding or DMZ hosting. There may be cases when you want to host an online game or Internet application. This would require you to set up the Router to deliver incoming packets or data to a specific computer. This also applies to the Internet applications you are using. The best way to get the information on what port services to use is to go to the website of the online game or application you want to use. Follow these steps to set up online game hosting or use a certain Internet application:
Wireless-G Broadband Router with 2 Phone Ports A. Access the Routers Web-based Utility by going to http://192.168.15.1 or the IP address of the Router. Go to the Applications & Gaming => Port Range Forwarding tab. B. Enter any name you want to use for the Application. C. Enter the port range of the service you are using. For example, if you have a web server, you would enter the range 80 to 80. D. Select the protocol you will be using, TCP or UDP, or select Both. E. Enter the IP address of the PC or network device that you want the port server to go to. For example, if the web servers Ethernet adapter IP address is 192.168.15.100, you would enter 100 in the field provided. Check Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter for details on getting an IP address. F. Check the Enabled option for the port services you want to use. Consider the examples below:

AppendixC:FindingtheMACAddressandIPAddressforYour Ethernet Adapter
This section describes how to find the MAC address for your computers Ethernet adapter so you can use the MAC filtering and/or MAC address cloning feature of the Router. You can also find the IP address of your computers Ethernet adapter. This IP address is used for the Routers filtering, forwarding, and/or DMZ features. Follow the steps in this appendix to find the adapters MAC or IP address in Windows 98, Me, 2000, or XP.
Windows 98 or Me Instructions
1. Click Start and Run. In the Open field, enter winipcfg. Then press the Enter key or the OK button. 2. When the IP Configuration screen appears, select the Ethernet adapter you have connected to the Router via a CAT 5 Ethernet network cable. 3. Write down the Adapter Address as shown on your computer screen. This is the MAC address for your Ethernet adapter and is shown as a series of numbers and letters. The MAC address/Adapter Address is what you will use for MAC address cloning or MAC filtering. The example shows the Ethernet adapters IP address as 192.168.1.100. Your computer may show something different. Figure C-2: MAC/Adapter Address
Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter Windows 98 or Me Instructions
Figure C-1: IP Configuration Screen
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. 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; it is the MAC address for your Ethernet adapter. This appears as a series of numbers and letters. The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering. Figure C-3: MAC/Physical Address
The example shows the Ethernet adapters IP address as 192.168.1.100. Your computer may show something different.
For the Routers Web-based Utility
For MAC address cloning, enter the 12-digit MAC address in the fields provided, two digits per field. For MAC filtering, enter the 12-digit MAC address in this format, XXXXXXXXXXXX, WITHOUT the hyphens. Figure C-4: MAC Address Clone
Figure C-5: MAC Address Filter 82
Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter Windows 2000 or XP Instructions

Appendix D: Windows Help

Almost all Linksys products require Microsoft Windows. Windows is the most used operating system in the world and comes with many features that help make networking easier. These features can be accessed through Windows Help and are described in this appendix.

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. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used according to the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which is found by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna Increase the separation between the equipment or devices Connect the equipment to an outlet other than the receiver's Consult a dealer or an experienced radio/TV technician for assistance

FCC Part 68 Statement

This equipment complies with Part 68 of the FCC Rules. A label is attached to the equipment that contains, among other information, its FCC registration number and ringer equivalence number. If requested, this information must be provided to the telephone company.
This equipment uses the following USOC Jack: RJ-11. 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.
The REN is useful to determine the quantity of devices that may be connected to the telephone line and still have all of those devices ring when your telephone number is called. In most, but not all areas, the sum of RENs should not exceed 5. To be certain of the number of devices that may be connected to the line, as determined by the total RENs, contact the telephone company to determine the maximum REN for the calling area. If this equipment causes harm to the telephone network, the telephone company may discontinue your service temporarily. If advance notice is not practical, the telephone company will notify the customer as soon as possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary. The telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the operation of the equipment. If this happens, the telephone company will provide advance notice in order for you to make the necessary modifications in order to maintain uninterrupted service. In the event this equipment should fail to operate properly, disconnect the unit from the telephone line. Try using another FCC approved device in the same telephone jack. If the trouble persists, call the telephone company repair service bureau. If the trouble does not persist and appears to be with this unit, disconnect the unit from the telephone line and discontinue use of the unit until it is repaired. Please note that the telephone company may ask that you disconnect the equipment from the telephone network until the problem has been corrected or until you are sure that the equipment is not malfunctioning. The user must use the accessories and cables supplied by the manufacturer to get optimum performance from the product. No repairs may be done by the customer. If trouble is experienced with this equipment, please contact your authorized support provider for repair and warranty information. If the trouble is causing harm to the telephone network, the telephone company may request you remove the equipment from the network until the problem is resolved. This equipment cannot be used on telephone company provided coin service. Connection to Party Line Service is subject to state tariffs.