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9.2.2.7 Lab - Configuring and Verifying Standard ACLs - ILM

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How to Configuring and Verify Standard ACLs - ILM LAB Manual
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    © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 1  of 18   Lab  –  Configuring and Verifying Standard ACLs (Instructor Version)   Instructor Note : Red font color or Gray highlights indicate text that appears in the instructor copy only. Topology  Lab  –  Configuring and Verifying Standard ACLs © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 2  of 18   Addressing Table Device Interface IP Address Subnet Mask Default Gateway R1 G0/1 192.168.10.1 255.255.255.0 N/A Lo0 192.168.20.1 255.255.255.0 N/A S0/0/0 (DCE) 10.1.1.1 255.255.255.252 N/A ISP S0/0/0 10.1.1.2 255.255.255.252 N/A S0/0/1 (DCE) 10.2.2.2 255.255.255.252 N/A Lo0 209.165.200.225 255.255.255.224 N/A R3 G0/1 192.168.30.1 255.255.255.0 N/A Lo0 192.168.40.1 255.255.255.0 N/A S0/0/1 10.2.2.1 255.255.255.252 N/A S1 VLAN 1 192.168.10.11 255.255.255.0 192.168.10.1 S3 VLAN 1 192.168.30.11 255.255.255.0 192.168.30.1 PC-A NIC 192.168.10.3 255.255.255.0 192.168.10.1 PC-C NIC 192.168.30.3 255.255.255.0 192.168.30.1 Objectives Part 1: Set Up the Topology and Initialize Devices   Set up equipment to match the network topology.   Initialize and reload the routers and switches. Part 2: Configure Devices and Verify Connectivity   Assign a static IP address to PCs.   Configure basic settings on routers.   Configure basic settings on switches.   Configure OSPF routing on R1, ISP, and R3.   Verify connectivity between devices. Part 3: Configure and Verify Standard Numbered and Named ACLs   Configure, apply, and verify a numbered standard ACL.   Configure, apply, and verify a named ACL. Part 4: Modify a Standard ACL   Modify and verify a named standard ACL.   Test the ACL. Background / Scenario Network security is an important issue when designing and managing IP networks. The ability to configure proper rules to filter packets, based on established security policies, is a valuable skill.  Lab  –  Configuring and Verifying Standard ACLs © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 3  of 18   In this lab, you will set up filtering rules for two offices represented by R1 and R3. Management has established some access policies between the LANs located at R1 and R3, which you must implement. The ISP router sitting between R1 and R3 will not have any ACLs placed on it. You would not be allowed any administrative access to an ISP router because you can only control and manage your own equipment. Note : The routers used with CCNA hands-on labs are Cisco 1941 Integrated Services Routers (ISRs) with Cisco IOS Release 15.2(4)M3 (universalk9 image). The switches used are Cisco Catalyst 2960s with Cisco IOS Release 15.0(2) (lanbasek9 image). Other routers, switches, and Cisco IOS versions can be used. Depending on the model and Cisco IOS version, the commands available and output produced might vary from what is shown in the labs. Refer to the Router Interface Summary Table at the end of the lab for the correct interface identifiers.  Note : Make sure that the routers and switches have been erased and have no startup configurations. If you are unsure, contact your instructor. Instructor Note : Refer to the Instructor Lab Manual for the procedures to initialize and reload devices. Required Resources   3 Routers (Cisco 1941 with Cisco IOS Release 15.2(4)M3 universal image or comparable)   2 Switches (Cisco 2960 with Cisco IOS Release 15.0(2) lanbasek9 image or comparable)   2 PCs (Windows 7, Vista, or XP with terminal emulation program, such as Tera Term)   Console cables to configure the Cisco IOS devices via the console ports   Ethernet and serial cables as shown in the topology Part 1: Set Up the Topology and Initialize Devices In Part 1, you set up the network topology and clear any configurations, if necessary. Step 1: Cable the network as shown in the topology. Step 2: Initialize and reload the routers and switches. Part 2: Configure Devices and Verify Connectivity In Part 2, you configure basic settings on the routers, switches, and PCs. Refer to the Topology and  Addressing Table for device names and address information. Step 1: Configure IP addresses on PC-A and PC-C. Step 2: Configure basic settings for the routers. a. Disable DNS lookup. b. Configure the device names as shown in the topology. c. Create loopback interfaces on each router as shown in the Addressing Table. d. Configure interface IP addresses as shown in the Topology and Addressing Table. e. Configure a privileged EXEC mode password of class . f. Assign a clock rate of 128000  to the DCE serial interfaces. g. Assign cisco  as the console password. h. Assign cisco  as the vty password and enable Telnet access.  Lab  –  Configuring and Verifying Standard ACLs © 2013 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public. Page 4  of 18   Step 3: (Optional) Configure basic settings on the switches. a. Disable DNS lookup. b. Configure the device names as shown in the topology. c. Configure the management interface IP address as shown in the Topology and Addressing Table. d. Configure a privileged EXEC mode password of class . e. Configure a default gateway. f. Assign cisco  as the console password. g. Assign cisco  as the vty password and enable Telnet access. Step 4: Configure OSPF routing on R1, ISP, and R3. a. Assign 1 as the OSPF process ID and advertise all networks on R1, ISP, and R3. The OSPF configuration for R1 and ISP is included for reference. R1(config)# router ospf 1  R1(config-router)# network 192.168.10.0 0.0.0.255 area 0  R1(config-router)# network 192.168.20.0 0.0.0.255 area 0  R1(config-router)# network 10.1.1.0 0.0.0.3 area 0 ISP(config)# router ospf 1  ISP(config-router)# network 209.165.200.224 0.0.0.31 area 0 ISP(config-router)# network 10.1.1.0 0.0.0.3 area 0 ISP(config-router)# network 10.2.2.0 0.0.0.3 area 0 R3(config)# router ospf 1  R3(config-router)# network 192.168.30.0 0.0.0.255 area 0 R3(config-router)# network 192.168.40.0 0.0.0.255 area 0  R3(config-router)# network 10.2.2.0 0.0.0.3 area 0   b. After configuring OSPF on R1, ISP, and R3, verify that all routers have complete routing tables listing all networks. Troubleshoot if this is not the case. Step 5: Verify connectivity between devices. Note : It is very important to test whether connectivity is working before  you configure and apply access lists! You want to ensure that your network is properly functioning before you start to filter traffic. a. From PC-A, ping PC-C and the loopback interface on R3. Were your pings successful? _______ Yes b. From R1, ping PC-C and the loopback interface on R3. Were your pings successful? _______ Yes c. From PC-C, ping PC-A and the loopback interface on R1. Were your pings successful? _______ Yes d. From R3, ping PC-A and the loopback interface on R1. Were your pings successful? _______ Yes Part 3: Configure and Verify Standard Numbered and Named ACLs Step 1: Configure a numbered standard ACL. Standard ACLs filter traffic based on the source IP address only. A typical best practice for standard ACLs is to configure and apply it as close to the destination as possible. For the first access list, create a standard
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