Ceh v8: Scanning Networks

Lab 12

Anonymous Browsing using Proxy Switcher

Proxy Switcher allowsyou to automatically execute actions; based on the detected netnork connection.

Lab Scenario

111 the previous lab, you gathered information like scan summary, NetBIOS details, services running on a computer, etc. using Global Network Inventory.

NetBIOS provides programs with a uniform set of commands for requesting the lower-level services that the programs must have to manage names, conduct sessions, and send datagrams between nodes on a network. Vulnerability lias been identified in Microsoft Windows, which involves one o f the NetBIOS over TCP/IP (NetBT) services, the NetBIOS Name Server (NBNS). With this service, the attacker can find a computer’s IP address by using its NetBIOS name, and vice versa. The response to a NetBT name service query may contain random data from the destination computer’s memory; an attacker could seek to exploit this vulnerability by sending the destination computer a NetBT name service query and then looking carefully at the response to determine whether any random data from that computer's memory is included. As an expert penetration tester, you should follow typical security practices, to block such Internet-based attacks block the port 137 User Datagram Protocol (UDP) at the firewall. You must also understand how networks are scanned using Proxy Switcher.

Lab Objectives

This lab will show you how networks can be scanned and how to use Proxy Switcher. It will teach you how to:
■ Hide your IP address from the websites you visit
■ Proxy server switching for improved anonymous surfing

Lab Environment

To cany out the lab, you need:

■ Proxy Switcher is located at D:\CEH-Tools\CEHv8 Module 03 Scanning Networks\Proxy Tools\Proxy Switcher
■ You can also download the latest version o f Proxy Workbench from this link http:/ /www.proxyswitcher.com/
■ I f you decide to download the latest version, then screenshots shown in the lab might differ
■ A computer running Windows Server 2012
■ A web browser with Internet access
■ Follow’ Wizard-driven installation steps to install Proxy Switcher
■ Administrative privileges to run tools

Lab Duration

Time: 15 Minutes

Overview of Proxy Switcher

Proxy Switcher allows you to automatically execute actions, based on the detected network connection. As the name indicates, Proxy Switcher comes with some default actions, for example, setting proxy settings for Internet Explorer, Firefox, and Opera.

Lab Tasks

1. Install Proxy Workbench in Windows Server 2012 (Host Machine)
2. Proxy Switcher is located at D:\CEH-Tools\CEHv8 Module 03 Scanning Networks\Proxy Tools\Proxy Switcher
3. Follow’ the wizard-driven installation steps and install it in all platforms o f the Windows operating system.
4. This lab will work in the CEH lab environment - on Windows Server 2012, Windows Server 2008, and Windows 7
5. Open the Firefox browser in your Windows Server 2012, go to Tools, and click Options in die menu bar.

FIGURE 121: Firefox options tab

6. Go to die Advanced profile in die Options wizard of Firefox, and select Network tab, and dien click Settings.

FIGURE 122 Firefox Network Settings

7. Select die Use System proxy settings radio button, and click OK.

FIGURE 12.3: Firefox Connection Settings

8. Now to Install Proxy Switcher Standard, follow the wizard-driven installation steps.
9. To launch Proxy Switcher Standard, go to Start menu by hovering die mouse cursor in die lower-left corner of the desktop.

FIGURE 124: WmdcKvs Server 2012 - Desktop view

10. Click die Proxy Switcher Standard app to open die Proxy Switcher window.
OR
Click Proxy Switcher from die Tray Icon list.

FIGURE 125: Windows Server 2012 - Apps

FIGURE 126: Select Proxy Switcher

11. The Proxy List Wizard will appear as shown in die following figure; click Next

FIGURE 127: Proxy List wizard

12. Select die Find New Server, Rescan Server, Recheck Dead radio button fiom Common Task, and click Finish.

FIGURE 12.8: Select common tasks

13. A list of downloaded proxy servers will show in die left panel.

FIGURE 129: List of downloadeed Prosy Server

14. To stop downloading die proxy server click

FIGURE 1210: Click on Start button

15. Click Basic Anonymity in die right panel; it shows a list of downloaded proxy servers.

FIGURE 1211: Selecting downloaded Proxy server from Basic Anonymity

16. Select one Proxy server IP address from right panel to swich die selected
proxy server, and click icon.

FIGURE 1212 Selecting the proxy server

17. The selected proxy server will connect, and it will show die following connection icon.

FIGURE 1213: Succesfiil connection of selected proxy

18. Go to a web browser (Firefox), and type die following URL http: / /wWW.proxy switcher, com/ checLphp to check die selected proxy server comietivity; if it is successfully conncted, then it show's die following figure.