Packet Tracer 9.4 1.2

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Describes the architecture, components, and operations of routers and switches in a small network. Students learn how to configure a router and a switch for basic functionality. By the end of this course, students will be able to configure and troubleshoot routers and switches and resolve common issues with static route, RIPv2, VLAN, NAT,ACL, DHCP in both IPv4 and IPv6 networks, and perform device discovery, management and maintenance.

Skills and Competencies:

  • Determine how a router will forward traffic based on the contents of a routing table.
  • Explain how switching operates in a small to medium-sized business network.
  • Use monitoring tools and network management protocols to troubleshoot data networks.
  • Implement access control lists (ACLs) to filter traffic.
  • Configure and troubleshoot VLANs and routing with static route and RIPv2.
  • Describe the operations of Dynamic Host Configuration Protocol for IPv4 and IPv6
CCNA 2: Activities & Lab Manuals Packet Tracer
1.1.1.8 Packet Tracer – Using Traceroute to Discover the Network
1.1.2.9 Packet Tracer – Documenting the Network
1.1.3.5 Packet Tracer – Configuring IPv4 and IPv6 Interfaces
1.1.4.5 Packet Tracer – Configuring and Verifying a Small Network
1.3.2.5 Packet Tracer – Investigating Directly Connected Routes
2.2.2.4 Packet Tracer – Configuring IPv4 Static and Default Routes
2.2.4.4 Packet Tracer – Configuring IPv6 Static and Default Routes
2.2.5.5 Packet Tracer – Configuring Floating Static Routes
2.3.2.3 Packet Tracer – Troubleshooting Static Routes
3.2.1.8 Packet Tracer – Configuring RIPv2
5.2.1.4 Packet Tracer – Configuring SSH
5.2.2.7 Packet Tracer – Configuring Switch Port Security
5.2.2.8 Packet Tracer – Troubleshooting Switch Port Security
5.3.1.2 Packet Tracer – Skills Integration Challenge
6.1.1.5 Packet Tracer – Who Hears the Broadcast
6.1.2.7 Packet Tracer – Investigating a VLAN Implementation
6.2.1.7 Packet Tracer – Configuring VLANs
6.2.2.4 Packet Tracer – Configuring Trunks
6.2.3.7 Packet Tracer – Troubleshooting a VLAN Implementation – Scenario 1
6.2.3.8 Packet Tracer – Troubleshooting a VLAN Implementation – Scenario 2
6.3.3.6 Packet Tracer – Configuring Router-on-a-Stick Inter-VLAN Routing
6.3.3.8 Packet Tracer – Inter-VLAN Routing Challenge
6.4.1.2 Packet Tracer – Skills Integration Challenge
7.1.1.4 Packet Tracer – ACL Demonstration
7.2.1.6 Packet Tracer Configuring Numbered Standard IPv4 ACLs
7.2.1.7 Packet Tracer – Configuring Named Standard IPv4 ACLs
7.2.3.3 Packet Tracer – Configuring an ACL on VTY Lines
7.3.2.4 Packet Tracer – Troubleshooting Standard IPv4 ACLs
7.4.1.2 Packet Tracer – Skills Integration Challenge
8.1.3.3 Packet Tracer – Configuring DHCPv4 Using Cisco IOS
8.3.1.2 Packet Tracer – Skills Integration Challenge
9.1.2.6 Packet Tracer – Investigating NAT Operation
9.2.1.4 Packet Tracer – Configuring Static NAT
9.2.2.5 Packet Tracer – Configuring Dynamic NAT
9.2.3.6 Packet Tracer – Implementing Static and Dynamic NAT
9.2.4.4 Packet Tracer – Configuring Port Forwarding on a Wireless Router
9.3.1.4 Packet Tracer – Verifying and Troubleshooting NAT Configurations
9.4.1.2 Packet Tracer – Skills Integration Challenge
10.1.1.4 Packet Tracer – Map a Network Using CDP
10.2.1.4 Packet Tracer – Configure and Verify NTP
10.2.3.5 Packet Tracer – Configuring Syslog and NTP
10.3.1.8 Packet Tracer – Backing Up Configuration Files
10.3.3.5 Packet Tracer – Using a TFTP Server to Upgrade a Cisco IOS Image
10.4.1.1 Packet Tracer – Skills Integration Challenge

Last Updated on March 20, 2018 by

9.1.2.6 Packet Tracer – Investigating NAT Operation

Packet Tracer – Investigating NAT Operation (Answer Version)

9.4.1.2 Packet Tracer - Skills Integration Challenge Instructions - Free download as PDF File (.pdf), Text File (.txt) or read online for free. NAT Hairpinning on ASA 5505 9.1(2) Hi, You can always confirm with the 'packet-tracer' that you dont have any other NAT rule that might be messing with this configuration.

Answer Note: Red font color or Gray highlights indicate text that appears in the Answer copy only.

Topology

9.1.2.6 Packet Tracer – Investigating NAT Operation

Objectives

Part 1: Investigate NAT Operation Across the Intranet

Part 2: Investigate NAT Operation Across the Internet

Part 3: Conduct Further Investigations

Scenario

As a frame travels across a network, the MAC addresses may change. IP addresses can also change when a packet is forwarded by a device configured with NAT. In this activity, we will investigate what happens to IP addresses during the NAT process.

Part 1: Investigate NAT Operation Across the Intranet

Step 1: Wait for the network to converge.

It might take a few minutes for everything in the network to converge. You can speed the process up by clicking on Fast Forward Time.

Step 2: Generate an HTTP request from any PC in the Central domain.

  1. Open the Web Browser of any PC in the Central domain and type the following without pressing enter or clicking Go: http://branchserver.pka.
  2. Switch to Simulation mode and edit the filters to show only HTTP requests.
  3. Click Go in the browser, a PDU envelope will appear.
  4. Click Capture / Forward until the PDU is over D1 or D2. Record the source and destination IP addresses. To what devices do those addresses belong? 10.X.X.X and 64.100.200.1 The PC and R4.
  5. Click Capture / Forward until the PDU is over R2. Record the source and destination IP addresses in the outbound packet. To what devices do those addresses belong? 64.100.100.X and 64.100.200.1 The first address is not assigned to an interface. R4 is the second address.
  6. Login to R2 using ‘class’ to enter privileged EXEC and show the running configuration. The address came from the following address pool:
    • ip nat pool R2Pool 64.100.100.3 64.100.100.31 netmask 255.255.255.224
  7. Click Capture / Forward until the PDU is over R4. Record the source and destination IP addresses in the outbound packet. To what devices do those addresses belong? 64.100.100.X and 172.16.0.3. The first address is from R2Pool on R2. Branchserver.pka is the second address.
  8. Click Capture / Forward until the PDU is over Branserver.pka. Record the source and destination TCP port addresses in the outbound segment.
  9. On both R2 and R4, run the following command and match the IP addresses and ports recorded above to the correct line of output:
    • R2# show ip nat translations
    • R4# show ip nat translations
  10. What do the inside local IP addresses have in common? They are reserved for private use.
  11. Did any private addresses cross the Intranet? No.
  12. Return to Realtime mode.

Part 2: Investigate NAT Operation Across the Internet

Step 1: Generate an HTTP request from any computer in the home office.

  1. Open the Web Browser of any computer in the home office and type the following without pressing enter or clicking Go: http://centralserver.pka.
  2. Switch to Simulation mode. The filters should already be set to show only HTTP requests.
  3. Click Go in the browser, a PDU envelope will appear.
  4. Click Capture / Forward until the PDU is over WRS. Record the inbound source and destination IP addresses and the outbound source and destination addresses. To what devices do those addresses belong? 192.168.0.X and 64.100.100.2, 64.104.223.2 and 64.100.100.2 The computer and R2, WRS and R2.
  5. Click Capture / Forward until the PDU is over R2. Record the source and destination IP addresses in the outbound packet. To what devices do those addresses belong? 64.104.223.2 and 10.10.10.2 WRS and centralserver.pka.
  6. On R2, run the following command and match the IP addresses and ports recorded above to the correct line of output:
    • R2# show ip nat translations
  7. Return to Realtime mode. Did all of the web pages appear in the browsers? Yes.

Part 3: Conduct Further Investigations

  1. Experiment with more packets, both HTTP and HTTPS. There are many questions to consider such as:
1.2

– Do the NAT translation tables grow?

– Does WRS have a pool of addresses?

– Is this how the computers in the classroom connect to the Internet?

Packet tracer 9.4.1.2 skills integration

– Why does NAT use four columns of addresses and ports?

Suggested Scoring Rubric

Packet Tracer 6.4.1.2

Activity Section

Question LocationPossible Points

Earned Points

Part 1: Request a Web Page Across the IntranetStep 2d12
Step 2e12
Step 2g13
Step 2j12
Step 2k12
Part 1 Total61
Part 2: Request a Web Page Across the InternetStep 1d13
Step 1e13
Step 1g13
Part 2 Total39
Total Score100