Cisco Packet Tracer 5 Manual
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IT Essentials Chapter 6 Packet Tracer/Instructor © 201 4 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 4 of 4 b. How could you reduce the amount of failure points?
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IT Essentials Chapter 6 Packet Tracer/Student
© 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 2 of 2
c. Notice that PC2 is not associated to any wireless networks yet.
d. Still under PC Wireless , click the Connect tab.
e. Allow a few seconds for PC2 to detect the beacons sent by WRS1 over the air. You
should see the existing wirel ess network identified as aCompany listed in the Wireless
Network Name column.
f. Click the network identified as aCompany to select it to use then click the Connect
button.
g. Notice that PC2 is now associated to WRS1 by clicking the Link Information tab.
h. Go to Desktop > IP Configuration and select DHCP.
i. PC2 should now be ready to communicate to other devices connected to the network.
Task 2: Verify address configuration of PC2
Step 1: View IP address configuration of PC2 .
a. Click PC2 to open its configuration window.
b. Under Desktop tab, click the Command Prompt button.
c. Type ipconfig /all and then press the Enter key.
d. What is the IP address of the computer?
e.
What is the subnet mask of the computer?
f. What is the default gateway of the computer?
g. Still from Command Prompt in PC2 , ping the other two PCs ( PC0 and PC1) in the
network. The pings should be successful.
Note: Since IP information is being acquire d over DHCP, IP addresses may differ from
those listed above.
Check your score. It should be 100%.
© I 6 L I I c a T S F d S W ty P I S D P N T S O 1 S Y O W T S T ( © 2013 Cisco and T Essentia 6.8.3.11 Learning Confi Confi Verify ntroducti n this activity configure bas adding WEP Task 1: C Step 1. Con From Wireles default netwo Step 2. Ver While still at t yping the ipc PC>ipconfig P Address.... Subnet Mask. Default Gatew PC> Note: The IP Task 2: A Step 1. Acc On Wireless 192.168.1.1, Step 2. Ent You will be pr Once you hav WRT300N we Task 3: B Step 1. Con To start secu (SSID) from D d/or its affiliates. als 5.0 1 Conne Objective gure basic w gure basic s y full connect ion y, you will co sic security o encryption. onnect to nnect to th ssPC1, acce ork. rify connec the desktop o config comm ..................: 1 .................... way................ address cou ccess the cess Links PC1, close th the default g ter authent rompted for a ve entered th eb utility. asic Wire nfigure the ring the wire Default to W All rights reserve ecting W es wireless settin ecurity on the tivity. nfigure wirele on the Linksys o the Link he wireless ess the Desk ctivity sett of the PC, ve mand. 192.168.1.100 : 255.255.255 .: 192.168.1. uld be differe e Linksys sys WRT30 he Comman gateway of th tication inf a username he login infor eless Sett e SSID. less network WRS1. ed. This docume Wireles ngs on a PC. e Linksys-W ess PCs to c s WRT300N ksys WRT s router. ktop then PC ings. erify the conn 0 5.0 1 ent since it wa s WRT300 00N, WRS1 nd Prompt an he PC. formation. and passwor rmation, you ings k, access the ent is Cisco Publi ss PCs RT300N. connect to a n by changing T300N Rou Wireless. S nectivity settin as dynamica N through t nd then click rd. The defau should be vie Wireless pa ic. to a Li network via t g the default uter Select the Co ngs by acces ally acquired. the web bro k the Web Br ult username ewing the de age and chan nksys W the Linksys W SSID, the de onnect tab an ssing the Co owser. rowser. Ente e and passwo efault page of nge the defa WRT30 WRT300N. Y efault passwo nd connect to mmand Pro er the URL ord are both f the Linksys ult Network Page 1 of 3 00N You will ord, and o the ompt and admin . s Name
IT Essentials Chapter 6 Packet Tracer/Student © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 2 of 3 Step 2. Save settings. Scroll down the page and then click Save Settings. When the settings are accepted by the Linksys WRT300N, a Request Timeout message will appear in the web brow ser window. After this message is displayed, continue to Step 3. Step 3. Reconnect to the wireless network. Since the SSID has changed, WirelessPC1 is currently unable to a ccess the network. On the Desktop return to PC Wireless and select the Connect tab. Connect to the WRS1 network. Task 4: Enable Wireless Security Step 1. From the Web Browser on WirelessP C1, reconnect to the router setup page (http://192.168.1.1). Step 2. Navigate to the Wireless page and then select the Wireless Security tab. Step 3. Under Security Mode, select WEP. Step 4. Enter a WEP key. A network is only as secure as its weakest point, and a wireless router is a very convenient place to start if someone wants to damage your network. By requiring a WEP key to connect to the router, you are adding a level of security. Unfortunately, there are tool s that can crack WEP key encryption. A mo re robust form of wireless security is WPA and WPA-2, which are currently not supported by Packet Tracer. Add the WEP key 1234567890 in the Key1 field. Step 5. Save your settings. Scroll down the page and then click Save Settings. You will become disconnected from the network again after saving your settings. When the settings are accepted by the Linksys WRT300N, a Request Timeout message will appear in the web browse r window. After this message is displayed, continue to Step 6. Step 6. Configure WirelessPC1 to use WEP authentication. Return to the Desktop and click PC Wireless. Click the Connect tab. From the list of available wireless networks, select WRS1 and click Connect. A screen will appear requesti ng the WEP key. Under WEP Key 1, type the WEP key: 1234567890 and then click Connect. Click the Link Information tab to verify connectivity to the access point. Your completion percentage s hould be 57%. If not, click Check Results to see which required components are not yet completed. Task 5: Managing and Securing the Web Utility of the Router Step 1. Configure web access password. From the Web Browser on WirelessPC1, return to the web utilit y page of the router (http://192.168.1.1) and navigate to the Administration section. Change the router password to cisco to secure access to the Linksys WRT300N by changing the default password. Note that HTTP Web Utility Access is already selected by default.
IT Essentials Chapter 6 Packet Tracer/Student © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 3 of 3 Step 2. Scroll down the page and click Save Settings. After implementing the changed password, t he page will display: Settings are successful. Below this message, there is a link to continue by logging into the web utility for the Linksys WRT300N. Click the Continue link and a login window will popu p. Enter the username of admin and use cisco as the password to reconnect to the Linksys WR T300N web configuration pages. Task 6: Change The Wireless Channel in Use Step 1. Access Linksys WRT300N, WRS1 through the web browser. On WirelessPC1, click the Web Browser. Enter the URL 192.168.1.1. Step 2. Enter authentication information. Authenticate by entering admin for the username and cisco for the password. Step 3. Specify a wireless channel. Many access points can automatically select a channel based on adjacent channel use. Some products continuously monitor the radio s pace to adjust the channel settings dynamically in response to environmental changes. In this task you will fo rce the access point to work on channel 6. Since the clients ar e 802.11b/g only, the Radio Band will be left as Standard-20MHz Channel . On the page that loads, navigate to Wireless > Basic Wireless Setup and locate the area Standard Channel . Change it to 6 – 2.437GHz. Step 4. Save your settings. Scroll down the page and then click Save Settings. When the settings are accepted by the Linksys WRT300N, a Settings are successful message will appear in the web browser window. After this message is displayed, click Continue to go back to the wireless page and close it. WirelessPC1 should now the associated to WRS1. Note that no configurati on is required on WirelessPC1 when changing channels. WRS1 is the device controlli ng which channel is used. Task 7: Connect WirelessPC2 to the network Step 1. Configure WirelessPC2 to use WEP authentication. From WirelessPC2 go to the Desktop tab and click PC Wireless. Click the Connect tab. From the list of available wireless networks, select WRS1 and click Connect. A screen will appear requesti ng the WEP key. Under WEP Key 1, type the WEP key: 1234567890 and then click Connect. Click the Link Information tab to verify connectivity to the access point. Your completion percentage should be 100%. If not, click Check Results to see which required components are not yet completed.
© I 6 L I I T S T S © 2013 Cisco and T Essentia 6.8.3.17 Learning Confi Test t ntroducti n this activity Task 1: C Step 1. Con a. Click b. Click c. Selec with d. Click e. When f. Enter g. Selec the a Task 2: Ve Step 1. Vie a. Close b. Click c. Type d. What e. What d/or its affiliates. als 5.0 7 Test a Objective gure a PC to the wireless ion y, you will co onfigure nfigure PC PC3 to open the Desktop ct the PC Wir access poin the Connec n WRS_LAN r ABCDE123 ct the Link In ccess point erify the a w IP addre e the PC Wir the Comma ipconfig t is the physic t is the IP add All rights reserve a Wirele es o join a wirele connection. nfigure PC3 the wirele C3 to conne n the Physica p tab for PC3 reless button nt. t tab in the w appears as 345 as the W nformation ta t. If you do no address c ess configu reless window nd Prompt b /all and th cal address o dress of the c ed. This docume ess Con ess network. to connect t o ess conne ect to the W al Device Vi 3. n. The Link I window. an available EP key and c ab. A messa ot receive thi configura uration of w. button. hen press the of the compu computer? ent is Cisco Publi nnectio o the network ection WRS1. ew. nformation wireless ne t click the Con ge should dis s message, tion of PC PC3. e Enter key. uter? What is ic. on k via the Link window ope twork, click th nnect button splay: You h troubleshoot C3 . another nam ksys WRT30 ns with the n he Connect . have succes t the steps in me for the ph 0N. note: No asso button. ssfully conne this activity. hysical addre Page 1 of 4 ociation ected to ss?
IT Essentials Chapter 6 Packet Tracer/Student © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 2 of 4 f. What is the subnet mask of the computer? g. What is the default gat eway of the computer? h. What is the DNS server address? What service does the DNS server provide to the network? Task 3: Verify the network connecti on between PC3 and the rest of the network Step 1. Verify connectivity between PC 3 and the rest of the network using the ping command. a. From the Command Prompt window, ping the default gateway for PC3. The ping should be successful. A successful pi ng resembles the output below: PC>ping 192.168.2.1 Pinging 192.168.2.1 with 32 bytes of data: Reply from 192.168.2.1: bytes=32 time=203ms TTL=255 Reply from 192.168.2.1: bytes=32 time=94ms TTL=255 Reply from 192.168.2.1: bytes=32 time=94ms TTL=255 Reply from 192.168.2.1: bytes=32 time=78ms TTL=255 Ping statistics for 192.168.2.1: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss) Approximate round trip times in milli-seconds: Minimum = 78ms, Maximum = 203ms, Average = 117ms b. From the Command Prompt window, ping PC1 using its IP address of 192.168.1.11. (The ping should be successful.) Step 2. Verify connectivity and the path be tween PC3 and the rest of the network using the tracert command. a. The tracert command is used to determine the path between a local host, in this case PC3, and a remote host. From the Command Prompt verify the path between PC3 and PC2 using the below command from the Command Prompt on PC3 . Type tracert 192.168.1.12 and then press the Enter key.
IT Essentials Chapter 6 Packet Tracer/Student © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 3 of 4 b. The output of the command should re semble the following information: PC>tracert 192.168.1.12 Tracing route to 192.168.1.12 over a maximum of 30 hops: 1 187 ms 94 ms 93 ms 192.168.2.1 2 * 125 ms 125 ms 192.168.1.12 Trace complete. c. Following the output of the command, the ICMP packets generated by the tracert command show the packets traveling across the WRS1 LAN interface to the host, PC2. Task 4: Using DNS Step 1. Verify connectivity to the web server using DNS. a. Close the Command Prompt window on PC3. b. Click the Web Browser button. c. Enter http://www.example.com in the URL window and click the GO button. The webpage for the server should display. d. DNS is used to resolve domain names to IP addr esses. To verify the resolution, close the Web Browser window on PC3. e. Click the Command Prompt button to open the Command Prompt on PC3 . f. In the Command Prompt window ping the webserver using the domain name www.example.com. This should generate the following output: PC>ping www.example.com Pinging 192.168.3.100 with 32 bytes of data: Reply from 192.168.3.100: bytes=32 time=138ms TTL=126 Reply from 192.168.3.100: bytes=32 time=156ms TTL=126 Reply from 192.168.3.100: bytes=32 time=172ms TTL=126 Reply from 192.168.3.100: bytes=32 time=140ms TTL=126 Ping statistics for 192.168.3.100: Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), Approximate round trip times in milli-seconds: Minimum = 138ms, Maximum = 172ms, Average = 151ms Note that the domain name www.example.com was translated by the DNS server to the IP address for the webserver, 192.168.3. 100. This verifies proper operation of the DNS server. So far all the DNS requests were done automatically by other applications. In item (c) it was done by the web browser and in item (f) by the ping comm and. To generate DNS requests directly to the server use the nslookup command.
IT Essentials Chapter 6 Packet Tracer/Student © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 4 of 4 g. Still from PC3 Command Prompt , type nslookup www.example.com. The command followed by its output should look like the following: PC>nslookup www.example.com Server: [192.168.3.100] Address: 192.168.3.100 Non-authoritative answer: Name: www.example.com Address: 192.168.3.100 PC> When entered in the format above, nslookup will submit a request to a DNS server asking “ What’s the IP address associated to the name www.example.com ”. The first line of the command’s out put informs the name of the DNS server who received the DNS request. PC3 sent the request to 192.168.3. 100 because it learned from WRS1 via DHCP 192.168.3.100 was to be used to resolve names. Since no name was defined to 192.168.3.100, the IP address was shown. The second line informs the IP address of the DNS server used in the request. The third, fourth and fifth lines reveal the actual answer to the request: the name www.example.com is associated to the 192.168.3.100 IP address. Your completion percentage should be 100%. If not, click Check Results to see which required components are not yet completed.