D-Link DIR-451 manual

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i D-Link DIR-451 User Manual D-Link reser v es the right to revise this pub lication and to mak e changes in the content hereof without ob ligation to notify any person or organization of such re visions or changes. T rademarks D-Link and the D-Link logo are trademarks or registered trademarks of D-Link Cor poration or its subsidiaries in the Unite[...]

ii D-Link DIR-451 User Manual T able of Contents Preface ........................................................................... i T rademarks ............................................................... i Pr oduct Overview ........................................................ 1 P ackage Contents...........................................[...]

iii D-Link DIR-451 User Manual T able of Contents Wireless Security ....................................................... 41 What is WEP? ........................................................ 41 Configure WEP ...................................................... 42 What is WP A? ........................................................ 43 Con[...]

1 D-Link DIR-451 User Manual Section 1 - Product Overview • D-Link DIR-451 Mobile Router • P o wer Adapter • Ether net Cab le • Manual and W arranty on CD System Requirements • A compatib le 32-bit PCMCIA (UMTS or HSDP A) card with ser vice*. • Compute rs with Windo ws ® , Macinto sh ® , or Linux-b ased operatin g systems with an inst[...]

2 D-Link DIR-451 User Manual Section 1 - Product Overview Introduction D-Link announces a f ast, mobile network router which allows you to share a high speed Inter net connection vir tually an ywhe re by conne cting an UMTS or HSDP A notebo ok adapter or USB- enab le phone . Y ou can get a high speed Internet connection just about anywhere within y[...]

3 D-Link DIR-451 User Manual Section 1 - Product Overview Device Interfaces • LAN Ether net Suppor t • 4 P or t 10/100 Mbps s witch • Complies with IEEE 802.3u specification • Suppor ts A uto-Negotiation • Suppor ts A uto-MDI/MDIX • Suppor ts IEEE 802.3x Flow Control in Full Duple x mode • 3G Module Slot • Connecting an UMTS or HSD[...]

4 D-Link DIR-451 User Manual Section 1 - Product Overview • W eb base setup wizard • Step by step setting procedure • L2TP P ass Through • PPTP P ass Through • IPsec P ass Through CONFIGURA TION & ADMINISTRA TION • Web based interf ace • Web Based Configur ation Wizard • Dynamic DNS • E-mail Repor ting • Statistics • Fir [...]

5 D-Link DIR-451 User Manual Section 1 - Product Overview Hardware Over view Connections Reset Button Pressing the Reset Button restores the route r to its original f actor y def ault settings. LAN P or ts These por ts automatically sense th e c able type w hen con nec tin g t o Ether net-enab led computers. These are A uto MDI/MDIX por ts. Interne[...]

6 D-Link DIR-451 User Manual Section 1 - Product Overview Hardware Over view LEDs W AN LED A solid light indicates connection on the W AN por t. This LED blinks during data transmission. WLAN LED A solid light indicates that the wireless segment is ready . This LED blinks during wireless data transmission. LAN LEDs A solid light indicates a connect[...]

7 D-Link DIR-451 User Manual Section 2 - Installation Connect to your Network Installation This section will walk you through the installation process . Placement of the router is v er y impor tant. Do not place the router in an enclosed area such as a closet, cabinet, or in the attic or garage . Note: Ensure that the power to y our DIR-451 Mobile [...]

8 D-Link DIR-451 User Manual Section 2 - Installation 4. Connect the power adapter to the receptor on the bac k panel of your DIR-451 Mobile Router . Then plug the other end of the pow er adapter into the wall outlet or po wer str ip . a. The P ow er LED will tur n ON to indicate pow er has been applied. b . Other LEDs will flash ON and OFF as the[...]

9 D-Link DIR-451 User Manual Section 2 - Installation Wireless Installation Considerations The D-Link mobile router lets y ou access y our netw or k using a wireless connection from vir tually an ywhere within the operating range of y our wireless network. K eep in mind, howe v er , that the number , thickness and location of walls, ceilin gs, or o[...]

10 D-Link DIR-451 User Manual Section 3 - Configuration Configuration This section will show y ou how to configure y our ne w D-Link mobile router using the web-based configuration utility . W eb-based Configuration Utility T o access the configur ation utility , open a web-bro wser such as Inter net Explorer and enter the IP address of the r[...]

11 D-Link DIR-451 User Manual Section 3 - Configuration Setup Wizard Y ou may r un the setup wizard to quickly setup your router . Clic k Setup Wizar d to launch the wizard. Clic k Launch Internet Connection Setup Wizar d to begin. Clic k Setup Wizar d Clic k Launch Internet Connection Setup Wizard to begin.[...]

12 D-Link DIR-451 User Manual Section 3 - Configuration Clic k Next to contin ue. Create a ne w pass word and then clic k Next to continue . Select your time z one from the drop-down menu and then clic k Next to continue . Clic k Next Clic k Next Clic k Next[...]

13 D-Link DIR-451 User Manual Section 3 - Configuration Select the Countr y , ISP and Card from the drop-down list and then clic k Username / P assw ord Connection (WW AN) . Clic k Next to continue . Clic k Next Enter your WW AN user name, pass word, and ser v er information. If you do not hav e this inf or mation, please contact your ISP . For ot[...]

14 D-Link DIR-451 User Manual Section 3 - Configuration This will divide connection into f ollowing three types. Country: Select the card issue countr y from the first drop-down men u. ISP: Select the card issue provider from the second drop-down men u. Car d: Select the card name from the third drop-down menu. Enter y our user name f or your UMT[...]

15 D-Link DIR-451 User Manual Section 3 - Configuration Check the box to enable the wireless function. If you do not want to use wireless, unchec k the bo x to disable all the wireless functions . Ser vice Set Identifier (SSID) is the name of your wireless network. Create a name using up to 32 characters . The SSID is case-sensitiv e. Indicates t[...]

16 D-Link DIR-451 User Manual Section 3 - Configuration Please ref er to Section 4 - Wireless Security f or inf or mation on setting up security and encr yption. Extended Range Mode helps reduce dead spots by improving the reception algorithm, which allo ws y our wireless clients to associate with the DIR-451 at f ar ther distances. Select either [...]

17 D-Link DIR-451 User Manual Section 3 - Configuration This section will allow y ou to change the local network settings of the router and to configure the DHCP settings. Network Settings Enter the IP address of the router . The def ault IP address is 192.168.0.1. If you change the IP address, once you click Apply , you will need to enter the ne[...]

18 D-Link DIR-451 User Manual Section 3 - Configuration Check the bo x to enable the DHCP ser v er on your router . Uncheck to disab le this function. Enter the star ting and ending IP addresses f or the DHCP ser v er’ s IP assignment. The length of time for the IP address lease. Enter the Lease time in minutes . Enable DHCP Server: DHCP IP Addr[...]

19 D-Link DIR-451 User Manual Section 3 - Configuration Virtual Ser ver This will allow y ou to open and redirect a single por t. Rule: Name: IP Address: Public Port/ Private Port: T raffic T ype: Schedule: Check the bo x to enabled the rule. Enter a name for the r ule. Y ou may select an application from the drop-down menu and click << to [...]

20 D-Link DIR-451 User Manual Section 3 - Configuration Port For warding This will allow y ou to open a single por t or a range of por ts. Rule: Name: IP Address: Start Port/ End Port: T raffic T ype: Schedule: Check the bo x to enabled the rule. Enter a name for the r ule. Y ou may select an application from the drop-down menu and click <<[...]

21 D-Link DIR-451 User Manual Section 3 - Configuration Application Rules Some applications require multiple connections, such as Inter net gaming, video conf erencing, Inter net telephon y and others. These applications ha ve difficulties w or king through NA T (Netw or k Address T ranslation). Special Applications mak es some of these applicati[...]

22 D-Link DIR-451 User Manual Section 3 - Configuration Network Filter Select T u r n M AC F i l t e r i n g O F F , T u r n M AC Filtering ON and ALLO W computers listed to access the netw ork , or T urn MA C Filtering ON and DENY computers listed on the netw ork. Enter the MA C address you w ould lik e to filter . T o find the MAC address on a[...]

23 D-Link DIR-451 User Manual Section 3 - Configuration Select T urn W ebsite Filtering OFF , T u r n W eb si te Fil te ri ng ON and A LL O W com pu te r s access to ONL Y thes e sites , or T urn W ebsite Filtering ON and DENY computers access to ONL Y these sites . Enter the k eyw ords or URLs that you want to bloc k (or allow). Any URL with the [...]

24 D-Link DIR-451 User Manual Section 3 - Configuration Check this bo x to enable DMZ. Enter the IP address of the computer you would like to open all ports to. Ch ec k thi s bo x to al lo w PPTP VPN tr affi c to pa ss through the router . Che ck this bo x to allo w L2TP VPN traffi c to pass through the router . Check this box to allow IPSec VPN[...]

25 D-Link DIR-451 User Manual Section 3 - Configuration Select the basic transf er rates based on the speed of wireless adapters on your wireless network. It is strongly recommended to keep this setting to A uto . Set the transmit po wer of the antennas . Beacons are pack ets sent by an Access P oint to synchronize a wireless network. Specify a va[...]

26 D-Link DIR-451 User Manual Section 3 - Configuration T o use the Univ ersal Plug and Pla y (UPnP ™ ) f eature click on Enabled UPNP . U P N P provides compatibility with networking equipment, software and peripherals . Un ch ec kin g the bo x wi ll not all o w the DIR -4 51 to respond to pings. Blocking the Ping may provide some extr a secur [...]

27 D-Link DIR-451 User Manual Section 3 - Configuration Enter a new Login Name f or the Administrator account. Enter a ne w passw ord for the Administrator Login Name. The administrator can mak e changes to the settings. Remote management allows the DIR-451 to be configured from the Inter net by a web browser . A user name and pass word is still [...]

28 D-Link DIR-451 User Manual Section 3 - Configuration T ime Settings Select the Time Zone from the drop-down menu. T o select Da ylight Saving time manually , select enabled or disab led, and enter a star t date and an end date f or da ylight sa ving time. NTP is shor t f or Network Time Protocol. NTP syn chro niz es comput er cloc k times in a [...]

29 D-Link DIR-451 User Manual Section 3 - Configuration System Settings Use this option to sav e the current router configuration settings to a file on the hard disk of the computer you are using. First, clic k the Save button. Y ou will then see a file dialog, where y ou can select a location and file name f or the settings. Use this option t[...]

30 D-Link DIR-451 User Manual Section 3 - Configuration Firmware Upgrade Click on the link in this screen to find out if there is an updated fir mwa re; if so , dow nload the new fir mw are to your hard driv e. After you hav e downloaded the new fir mw are, click B r ow s e in this window to locate the fir mw are update on your hard dr iv e. [...]

31 D-Link DIR-451 User Manual Section 3 - Configuration DDNS Dynamic Domain Name System is a method of k eeping a domain name linked to a cha nging IP Address. Check the bo x to enable DDNS . Select your DDNS provider from the drop-d own menu. Enter the Host Name that you registered with your DDNS service provider . Enter the User name f or your D[...]

32 D-Link DIR-451 User Manual Section 3 - Configuration System Check VCT is an adv anced f eature that integrates a LAN c ab le tes ter on ev ery Et hernet por t on the router . Through the graphical user interf ace (GUI), VCT can be used to remotely diagnose and repor t cab le f aults such as opens , shor ts, s wap s, and impe danc e mism atch . [...]

33 D-Link DIR-451 User Manual Section 3 - Configuration Schedules Enter a name f or your ne w schedule. Se lec t a da y , a ran ge of da ys, or all wee k to inc lud e e v er y da y . Check All Day - 24hrs or enter a star t and end time f or your schedule . Name: Day(s): Time:[...]

34 D-Link DIR-451 User Manual Section 3 - Configuration Log Settings This option will send a cop y of the router log to the emai l add res s config ure d in the T ool s > Ema il Settings screen. Ref er to page 39. Click to sa ve the router logs to y our hard dr iv e. Check System Activity to enab le logging. Send Email Now: Save Log File to Lo[...]

35 D-Link DIR-451 User Manual Section 3 - Configuration Syslog Che c k this bo x t o send the rout er logs to a S ysLo g Ser v er . The address of the SysLog ser v er that will be used to send the logs. Y ou ma y also select your computer from the drop-down menu (only if receiving an IP address from the router via DHCP). Enable Logging to Syslog S[...]

36 D-Link DIR-451 User Manual Section 3 - Configuration Email Settings When this option is enab led, router activity logs are e-mailed to a designated email address. This email address will appear as the sender when you receiv e a log file or fir mware upgrade notification via email. Enter the email address where y ou want the email sent. Enter[...]

37 D-Link DIR-451 User Manual Section 3 - Configuration Device Information This page displa ys the current information f or the DIR-451. It will displa y the LAN, W AN, and Wireless inf or mation. Displa ys the MA C address and the private (local) IP settings f or the router . Displa ys the MA C address and the public IP settings f or the router .[...]

38 D-Link DIR-451 User Manual Section 3 - Configuration Log First Page: Last Page: Previous: Next: Clear: View the first page of the log. View the last page of the log. View the pre vious page. View the ne xt page. Clear the log.[...]

39 D-Link DIR-451 User Manual Section 3 - Configuration Stats Wireless Stats T he sc re en b e lo w d is pl a ys th e T r a ffi c S ta ti s ti cs . He re y ou ca n vi e w th e a mo un t o f p a c k et s t ha t pa ss th ro ug h t he DI R- 45 1 on both the W AN and the LAN por ts. The traffic counter will reset if the de vice is rebooted. The wire[...]

40 D-Link DIR-451 User Manual Section 3 - Configuration Support[...]

41 D-Link DIR-451 User Manual Section 4 - Security Wireless Security This section will show y ou the diff erent le v els of security you can use to protect y our data from intruders. The DIR-451 off ers the follo wing types of secur ity: • WP A2 (Wi-Fi Protected Access 2) • WP A2-PSK (Pre-Shared K ey) • WP A (Wi-Fi Protected Access) • WP A-[...]

42 D-Link DIR-451 User Manual Section 4 - Security Configure WEP It is recommended to enable encr yption on your wireless router bef ore y our wireless network adapters . Pleas e estab lish wireless connectivity bef ore enabling encr yption. Y our wireless signal ma y degrade when enabling encr yption due to the added ov erhead. 1. L og in to the [...]

43 D-Link DIR-451 User Manual Section 4 - Security What is WP A? WP A, or Wi-Fi Protected Access , is a Wi-Fi standard that was designed to improv e the security f eatures of WEP (Wired Equiv alent Privacy). The 2 major improv ements ov er WEP: • Improv ed data encr yption through the T emporal K ey Integ r ity Protocol (TKIP). TKIP scr ambles th[...]

44 D-Link DIR-451 User Manual Section 4 - Security Configure WP A-PSK It is recommended to enable encr yption on your wireless router bef ore y our wireless network adapters . Pleas e estab lish wireless connectivity bef ore enabling encr yption. Y our wireless signal ma y degrade when enabling encr yption due to the added ov erhead. 1. Lo g in to[...]

45 D-Link DIR-451 User Manual Section 4 - Security Configure WP A (RADIUS) It is recommended to enable encr yption on your wireless router bef ore y our wireless network adapters . Pleas e estab lish wireless connectivity bef ore enabling encr yption. Y our wireless signal ma y degrade when enabling encr yption due to the added ov erhead. 1. Lo g [...]

46 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network Connect to a Wireless Network Using Windows Vista ™ Windows ® Vista ™ users ma y use the b uilt-in wireless utility . If y ou are using another compan y’ s utility or Windows ® 2000, please ref er to the user manual of y our wireless adapter f or help with connecting[...]

47 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network Configure Wireless Security It is recommended to enable wireless secur ity (WEP/WP A/WP A2) on your wireless router or access point before configuring your wireless adapter . If you are joining an e xisting network, you will need to know the secur ity k e y or passphrase b[...]

48 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network 3. Enter the same secur ity k ey or passphrase that is on your router and clic k Connect . It ma y take 20-30 seconds to connect to the wireless network. If the connection f ails, please v er ify that the secur ity settings are correct. The ke y or passphrase must be e xactl[...]

49 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network Connect to a Wireless Network Using Windows ® XP Windows ® XP users ma y use the built-in wireless utility (Zero Configuration Utility). The f ollowing instructions are for Ser vice P ac k 2 users. If y ou are using another company’ s utility or Windows ® 2000, please [...]

50 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network Configure WEP It is recommended to enable WEP on your wireless router or access point bef ore configuring your wireless adapter . If y ou are joining an e xisting network, you will need to kno w the WEP k ey being used. 2. Highlight the wireless network (SSID) y ou would l[...]

51 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network 3. Th e Wir ele ss Net w ork Con ne cti on bo x wi ll app ea r . Ent er the same WEP k ey that is on y our router and click Connect . It ma y take 20-30 seconds to connect to the wireless network. If the connection f ails, please v er ify that the WEP settings are correct. T[...]

52 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network Configure WP A-PSK It is recommended to enable WP A on your wireless router or access point bef ore configur ing y our wireless adapter . If y ou are joining an e xisting network, you will need to kno w the WP A ke y being used. 2. Highlight the wireless network (SSID) you[...]

53 D-Link DIR-451 User Manual Section 5 - Connecting to a Wireless Network 3. The Wireless Network Connection box will appear . Enter the WP A-PSK passphrase and clic k Connect . It ma y take 20-30 seconds to connect to the wireless network. If the connection f ails, please v er ify that the WP A-PSK settings are correct. The WP A-PSK passphrase mu[...]

54 D-Link DIR-451 User Manual Section 6 - T roubleshooting T roubleshooting This chapter provides solutions to problems that can occur dur ing the installation and operation of the DIR-451. Read the f ollowing descriptions if you are having prob lems. (The e xamples below are illustr ated in Windows ® XP . If y ou ha v e a diff erent operating sys[...]

55 D-Link DIR-451 User Manual Section 6 - T roubleshooting • Configure y our Inter net settings: • Go to Star t > Settings > Control P anel . Doub le-clic k the Internet Options Icon. F rom the Security tab , clic k the button to restore the settings to their def aults. • Clic k the Connection tab and set the dial-up option to Ne v er [...]

56 D-Link DIR-451 User Manual Appendix A - Wireless Basics D-Link wireless products are based on industry standards to provide easy-to-use and compatible high-speed wireless connectivity within your home, business or pub lic access wireless networks. Str ictly adher ing to the IEEE standard, the D-Link wireless f amily of products will allow y ou t[...]

57 D-Link DIR-451 User Manual Appendix A - Wireless Basics What is Wireless? Wireless or Wi-Fi technology is another wa y of connecting your computer to the network without using wires. Wi-Fi uses radio frequency to connect wirelessly , so you ha v e the freedom to connect computers anywhere in your home or office network. Wh y D-Link Wireless ? D[...]

58 D-Link DIR-451 User Manual Appendix A - Wireless Basics Wireless P ersonal Area Netw ork (WP AN) Bluetooth is the industr y standard wireless technology used f or WP AN. Bluetooth devices in WP AN oper ate in a r ange up to 30 f eet aw a y . Compared to WLAN the speed and wireless operation range are both less than WLAN, but in retur n it doesn?[...]

59 D-Link DIR-451 User Manual Appendix A - Wireless Basics Where is wireless used? Wireless technology is expanding e v er ywhere not just at home or office. P eople lik e the freedom of mobility and it’ s becoming so popular that more and more pub lic f acilities now pro vide wireless access to attr act people. The wireless connection in pub li[...]

60 D-Link DIR-451 User Manual Appendix A - Wireless Basics Security Don’t let y ou ne xt-door neighbors or intruders connect to your wireless network. Secure your wireless network by tur ning on the WP A or WEP secur ity f eature on the router . Ref er to product manual f or detail information on how to set it up . There are basically two modes o[...]

61 D-Link DIR-451 User Manual Appendix B - Networking Basics Networking Basics Check your IP address After y ou install y our ne w D-Link adapter , b y def ault, the TCP/IP settings should be set to obtain an IP address from a DHCP ser v er (i.e. wireless router) automatically . T o verify your IP address , please follo w the steps below . Clic k o[...]

62 D-Link DIR-451 User Manual Appendix B - Networking Basics Statically Assign an IP address If you are not using a DHCP capable gate wa y/router , or you need to assign a static IP address, please follo w the steps below: Step 1 Windows ® Vista ™ - Clic k on Star t > Contr ol P anel > Netw ork and Internet > Netw ork and Sharing Center[...]

63 D-Link DIR-451 User Manual Appendix C - T echnical Specifications T echnical Specifications Standards • IEEE 802.11g • IEEE 802.11b • IEEE 802.3 • IEEE 802.3u Wireless Signal Rates* • 54Mbps • 48Mbps • 36Mbps • 24Mbps • 18Mbps • 12Mbps • 11Mbps • 9Mbps • 6Mbps • 5.5Mbps • 2Mbps • 1Mbps Security • WP A - Wi-Fi [...]

64 D-Link DIR-451 User Manual Appendix C - T echnical Specifications External Antenna T ype Single detachable re v erse SMA Adv anced Firewall Features • NA T with VPN P ass-through (Network Address T ranslation) • MA C Filtering • URL Filtering • Domain Blocking • Scheduling Operating T emperature 32°F to 131°F ( 0°C to 55°C) Humidi[...]

65 D-Link DIR-451 User Manual Appendix D - Contacting T echnical Support Contacting T echnical Support U .S. and Canadian customers can contact D-Link technical suppor t through our web site or b y phone. Bef ore you contact technical suppor t, please hav e the f ollowing ready: • Model number of the product (e .g. DIR-451) • Hardware Re vision[...]

66 D-Link DIR-451 User Manual Appendix E - Warranty W arranty Subject to the ter ms and conditions set f or th herein, D-Link Systems, Inc. (“D-Link”) provides this Limited W arranty: • Only to the person or entity that originally purchased the product from D-Link or its author ized reseller or distrib utor , and • Only f or products purcha[...]

67 D-Link DIR-451 User Manual Appendix E - Warranty Limited Software W arranty: D-L ink wa rr ant s tha t the soft w are por ti on of the prod uct (“So ftw are ”) will subs tan tia lly conf orm to D-Li nk ’ s the n cur ren t fun cti on al speci fica ti ons f or the Software, as set f or th in the applicable documentation, from the date of or[...]

68 D-Link DIR-451 User Manual Appendix E - Warranty • After an RMA number is issued, the def ectiv e product must be packaged securely in the or iginal or other suitable shipping package to ensure that it will not be damaged in transit, and the RMA number must be prominently marked on the outside of the pac kage. Do not include an y manuals or ac[...]

69 D-Link DIR-451 User Manual Appendix E - Warranty IF ANY IMPLIED W ARRANTY CANNO T BE DISCLAIMED IN ANY TERRIT OR Y WHERE A PRODUCT IS SOLD , THE DURA TION OF SUCH IMPLIED W ARRANTY SH ALL BE LIMITED T O THE DURA TIO N OF THE AP PLICAB LE W AR RANTY PERIOD SET FOR TH ABO VE. EXCEP T AS EXPRESSL Y CO VE RED UNDER THE LI MITED W ARRANTY PRO VI DED [...]

70 D-Link DIR-451 User Manual Appendix E - Warranty CE Mark W arning: This is a Class B product. In a domestic en vironment, this product ma y cause radio interf erence, in which case the user ma y be required to take adequate measures . Federal Comm unication Commission Interference Statement This equipment has been tested and found to comply with[...]

71 D-Link DIR-451 User Manual Appendix E - Warranty Industry Canada Statement Operation is subject to the f ollowing two conditions: 1) this de vice ma y not cause interf erence and 2) this de vice must accept an y interf erence, including interf erence that may cause undesired oper ation of the de vice This de vice has been designed to operate wit[...]

72 D-Link DIR-451 User Manual Appendix E - Warranty • “GPL Software” means GPL software licensed to you under the GNU General Public License as pub lished by the F ree Software F oundation (GPL). A copy of the GPL is included belo w . • “O pe n Sou rc e Sof tw are ” mea ns v ariou s op en so ur ce so ft w ar e com po nen ts lic en sed u[...]

73 D-Link DIR-451 User Manual Appendix E - Warranty GNU General Public License V ersion 2, June 1991 Cop yright (C) 1989, 1991 F ree Software F oundation, Inc., 51 F ranklin Street, Fifth Floor , Boston, MA 02110-1301 USA Ev er yone is permitted to cop y and distribute v erbatim copies of this license document, but changing it is not allo wed. Prea[...]

74 D-Link DIR-451 User Manual Appendix E - Warranty Finally , any free program is threatened constantly by software patents. W e wish to a void the danger that redistr ib utors of a free progr am will individually obtain patent licenses, in effect making the program proprietar y . T o prev ent this, we hav e made it clear that any patent must be li[...]

75 D-Link DIR-451 User Manual Appendix E - Warranty b) Y ou m ust cause an y w ork that you distribute or pub lish, that in whole or in par t contains or is der iv ed from the Program or any par t thereof , to be licensed as a whole at no charge to all third par ties under the ter ms of this License. c) If the modified program nor mally reads comm[...]

76 D-Link DIR-451 User Manual Appendix E - Warranty The source code f or a work means the pref erred f or m of the work f or making modifications to it. F or an e x ecutable work, complete source code means all the source code for all modules it contains, plus an y associated interface definition files, plus the scripts used to control compilati[...]

77 D-Link DIR-451 User Manual Appendix E - Warranty It is not the pur pose of this section to induce you to infringe any patents or other proper ty right claims or to contest validity of any such claims; this section has the sole pur pose of protecting the integrity of the free software distribution system, which is implemented by public license pr[...]

78 D-Link DIR-451 User Manual Appendix E - Warranty 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LA W OR AGREED T O IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY O THER P AR TY WHO MA Y MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABO VE, BE LIABLE T O Y OU FOR D AMA GES, INCLUDING ANY GENERAL, SPECIAL, INCIDENT AL OR CONSEQUENTIAL D AMA GES[...]

79 D-Link DIR-451 User Manual Appendix F - Registration V ersion 1.3 December 7, 2007 Product registration is entirely voluntar y and f ailure to complete or retur n this f or m will not diminish y our warranty rights. Registration[...]