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Part 2: Configure SSH Access to the Switches

Configure the hostname, IP address, and access passwords.

Note: ISR G1 devices use FastEthernet interfaces instead of GigabitEthernet interfaces. Instructor Note: Red font color or gray highlights indicate text that appears in the instructor copy only. Lab – Securing Layer 2 Switches (Instructor Version)

Step 5: Verify DHCP snooping configuration.

DHCP responses are only permitted through trusted ports.

Step 4: Identify the trusted interface(s).

Step 3: Limit the number of DHCP requests on an interface.

Step 2: Enable DHCP snooping for VLAN 1 and 20.

Step 3: Configure PC-A and PC-B to obtain an IP Address using DHCP.

Task 2: Configure Inter-VLAN Communication.

Step 9: Configure a port with the PVLAN Edge feature.

Step 8: Move active ports to a VLAN other than the default VLAN 1.

Step 7: Disable unused ports on S1 and S2.

Step 6: (Optional) Configure port security for VoIP.

Step 5: Remove basic port security on S1 F0/5.

Step 4: Clear the S1 Fa0/5 error disabled status.

Step 3: Verify port security on S1 Fa0/5.

Step 1: Record the R1 Fa0/0 MAC address.

Task 4: Configure Port Security and Disable Unused Ports.

Step 2: Enable BPDU guard on the S1 and S2 access ports.

Step 1: Enable PortFast on S1 and S2 access ports.

Step 2: Disable trunking on S2 access ports.

Step 1: Disable trunking on S1 access ports.

Step 6: Verify the configuration with the show run command.

Step 5: Verify the trunking configuration on port F0/1.

Step 4: Prevent the use of DTP on S1 and S2.

Step 3: Change the native VLAN for the trunk ports on S1 and S2.

Step 2: Configure trunk ports on S1 and S2.

Step 1: Configure S1 as the root switch.

Part 3: Configure Secure Trunks and Access Ports.

Step 2: Verify SSH connectivity to S1 from PC-A.

Step 1: (Optional) Download and install an SSH client on PC-A and PC-B.

Step 8: Save the running configuration to the startup configuration.

Step 7: Configure the incoming vty lines.

Step 6: Configure SSH timeouts and authentication parameters.

Step 3: Generate the RSA encryption key pair for the router.

Step 2: Configure a privileged user for login from the SSH client.

Task 1: Configure the SSH Server on S1 and S2 Using the CLI.

Part 2: Configure SSH Access to the Switches.

Step 5: Save the basic configurations for the router and both switches.

Step 4: Verify basic network connectivity.

Step 2: Configure basic settings for the router and each switch.

Step 1: Cable the network as shown in the topology.

Part 1: Configure Basic Switch Settings.

Lab – Securing Layer 2 Switches (Instructor Version).