From PC-B, ping the external interface of R1 S000 10.1.1.1. The pings should be successful. From the Configuration screen, Device Setup menu, click Interfaces. Click Add to define a new
c. From PC-B, ping the external interface of R1 S000 10.1.1.1. The pings should be successful.
Part 5: Configuring a DMZ, Static NAT and ACLs. In Part 3 of this lab, you configured address translation using PAT for the inside network. In this part, you create a DMZ on the ASA, configure static NAT to a DMZ server, and apply an ACL to control access to the server. Step 1: Configure the ASA DMZ VLAN 3 interface. In this step you will create a new interface VLAN 3 named dmz, assign physical interface E02 to the VLAN, set the security level to 70, and limit communication from this interface to the inside VLAN1 interface.a. From the Configuration screen, Device Setup menu, click Interfaces. Click Add to define a new
interface. The General tab is displayed by default and currently defined inside VLAN 1, E01 and outside VLAN 2, E00 interfaces are listed. Click Add to create a new interface. b. In the Add Interface dialog box, select port Ethernet02 and click Add. You will be prompted to change the interface from the inside network. Click OK for the message to remove the port from the inside interface and add it to this new interface. In the Interface Name box, name the interface dmz, assign it a security level of 70, and make sure the Enable Interface checkbox is checked. c. Ensure that the Use Static IP button is selected and enter an IP address of 192.168.2.1 with a subnet mask of 255.255.255.0. Do NOT click OK at this time. CCNA Security All contents are Copyright © 1992 –2012 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 34 of 52 d. ASDM will configure this interface as VLAN ID 12 by default. Before clicking OK to add the interface, click the Advanced tab and specify this interface as VLAN ID 3. Note: If you are working with the ASA 5505 base license, you are allowed to create up to three named interfaces. However, you must disable communication between the third interface and one of the other interfaces. Because the DMZ server does not need to initiate communication with the inside users, you can disable forwarding to interfaces VLAN 1. e. On the Advanced tab, you also need to block traffic from this interface VLAN 3 dmz to the VLAN 1 inside interface. From the Block Traffic area, select vlan1 inside from the drop down menu. Click OK to return to the Interfaces window. You should see the new interface named dmz, in addition to the inside and outside interfaces. Click Apply to send the commands to the ASA. CCNA Security All contents are Copyright © 1992 –2012 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 35 of 52 Step 2: Configure the DMZ server and static NAT To accommodate the addition of a DMZ and a web server, you will use another address from the ISP range assigned, 209.165.200.22429 .224-.231. Router R1 Fa00 and the ASA outside interface are already using 209.165.200.225 and .226, respectively. You will use public address 209.165.200.227 and static NAT to provide address translation access to the server. a. From the Firewall menu, click the Public Servers option and click Add to define the DMZ server and services offered. In the Add Public Server dialog box, specify the Private Interface as dmz, the Public Interface as outside and the Public IP address as 209.165.200.227. CCNA Security All contents are Copyright © 1992 –2012 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 36 of 52 b. Click the ellipsis button to the right of Private IP Address. In the Browse Private IP Address window, click Add to define the server as a Network Object. Enter the name DMZ-Server, with a Type of Host and the Private IP Address of 192.168.2.3. c. While in the Add Network Object dialog box, click the double down arrow button for NAT. Click the checkbox for Add Automatic Address Translation Rules and enter the type as Static. Enter 209.165.200.227 as the Translated Addr. When the screen looks like the following, click OK to add the server network object. From the Browse Private IP Address window, click OK. You will return to the Add Public Server dialog box. CCNA Security All contents are Copyright © 1992 –2012 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 37 of 52 In the Add Public Server dialog, click the ellipsis button to the right of Private Service. In the Browse Private Service window, double click to select the following services: tcphttp, tcpftp, icmpecho and icmpecho-reply scroll down to see all services. Click OK to continue and return to the Add Public Server dialog. Note: You can specify Public services if different from the Private services, using the option on this screen. CCNA Security All contents are Copyright © 1992 –2012 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 38 of 52 d. When you have completed all information in the Add Public Server dialog box, it should look like the one shown below. Click OK to add the server. Click Apply at the Public Servers screen to send the commands to the ASA. CCNA Security All contents are Copyright © 1992 –2012 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 39 of 52 Step 3: View the DMZ Access Rule ACL generated by ASDM. a. With the creation of the DMZ server object and selection of services, ASDM automatically generates an Access Rule ACL to permit the appropriate access to the server and applies it to the outside interface in the incoming direction.b. View this Access Rule in ASDM by choosing Configuration Firewall Access Rules. It appears
Parts
» CCNA Security 1.1 Instructor Lab Manual
» Lab A: Researching Network Attacks and Security Audit Tools
» Lab A: Securing the Router for Administrative Access
» Use the username command to create the user ID with the highest possible privilege level and a
» Issue the undebug all or the no debug ntp all command to turn off debugging.
» Click OK in the Commands Delivery Status window.
» Use the show logging command to see the type and level of logging enabled.
» Save the running config to the startup config using the copy run start command.
» Lab A: Securing Administrative Access Using AAA and RADIUS
» Click Send and you should see a Send Access_Request message indicating the server at
» Clear the log on the WinRadius server by choosing Log Clear from the main menu.
» Lab A: Configuring CBAC and Zone-Based Firewalls
» Issue the show run command to review the current basic configuration on R1.
» Display the Extended ACL named autosec_firewall_acl, which is applied to S000 inbound.
» Display the Extended ACL named autosec_firewall_acl that is applied to S000 inbound.
» Click Finish to complete the Firewall wizard.
» Lab A: Configuring an Intrusion Prevention System IPS Using the CLI and CCP
» From the R1 CLI, verify that the directory is present using the dir flash: or dir flash:ipsdir
» Apply the IPS rule to an interface with the ip ips name direction command in interface
» Verify connectivity between R1 and PC-A, the TFTP server, using the ping command.
» Use the show ip ips all command to see an IPS configuration status summary. To which
» For Protocol, select tftp from the drop-down menu. Enter the IP address of the PC-C TFTP server
» Lab A: Securing Layer 2 Switches Instructor Version
» From the router R1 CLI, use the show interface command and record the MAC address of the
» Set the SPAN source interface using the monitor session command in global configuration mode.
» Lab A: Exploring Encryption Methods Instructor
» Lab A: Configuring a Site-to-Site VPN Using Cisco IOS and CCP
» Verify the IKE policy with the show crypto isakmp policy command.
» Save the running config to the startup config for R1 and R3 using the copy run start command.
» Click the Launch the selected task button to begin the CCP Site-to-Site VPN wizard.
» Lab B: Configuring a Remote Access VPN Server and Client
» In the Command Delivery Status window, click OK. How many commands are delivered? 103 with
» Lab C Optional: Configuring a Remote Access VPN Server and Client
» Lab A: Security Policy Development and Implementation
» Verify that R1 and R3 have made an association with R2 using the show ntp associations
» Choose FastEthernet 01 as the Inside Trusted interface and Serial 001 as the Outside Untrusted
» From PC-A, Telnet to R2 at IP address 10.1.1.2 using the vty line password ciscovtypass.
» If the ipsdir directory is not listed, create it.
» Secure the router running configuration and securely archive it in persistent storage flash.
» Lab A: Configuring ASA Basic Settings and Firewall Using CLI
» Display the ASA file system using the show file system command to determine what prefixes are
» Display the current running configuration using the show running-config command.
» You can configure the ASA to accept HTTPS connections using the http command. This allows
» Issue the show route command to display the ASA routing table and the static default route just
» Save the RSA keys to persistent flash memory using either the copy run start or write mem
» Lab B: Configuring ASA Basic Settings and Firewall Using ASDM
» View this Access Rule in ASDM by choosing Configuration Firewall Access Rules. It appears
» Lab C: Configuring Clientless and AnyConnect Remote Access SSL VPNs Using ASDM
» Enable HTTP access to R1 using the ip http server command in global config mode. Also set
» From the Add Bookmark List window, click Add to open the Add Bookmark window. Enter Web Mail as
» Lab D: Configuring a Site-to-Site IPsec VPN Using CCP and ASDM
» Use the reload command to restart the ASA. This will cause the ASA to come up in CLI Setup
» In the Peer Identity section, select Peer with static IP address and enter the IP address of the
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