Scanning Networks.docx - Module 03 Scanning Networks Objective The objective of this lab is to help students in conducting network scanning port

Scanning Networks.docx - Module 03 Scanning Networks...

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Module 03: Scanning Networks Objective The objective of this lab is to help students in conducting network scanning, port scanning, analyzing the network vulnerabilities, and so on. You need to perform a network scan to: Check live systems and open ports Perform banner grabbing and OS fingerprinting Identify network vulnerabilities Draw network diagrams of vulnerable hosts Scenario Earlier, you gathered all possible information about the target, such as IP address range and network topology. Now, as an ethical hacker, or pen-tester, your next step will to perform port scanning, network scanning, and vulnerability scanning on the IP addresses you obtained in the information gathering phase. This will help you to identify IP/host name, ports, services, live hosts, vulnerabilities, and services running on the target network. Port scanning will help you to identify the open ports and the services running on specific ports, which involves connecting to TCP and UDP system ports. Port scanning is used to find out the vulnerabilities in the services running on a port. Vulnerability scanning determines the possibility of network security attacks. It evaluates the organization’s systems and network for vulnerabilities such as missing patches, unnecessary services, weak authentication, and weak encryption. Vulnerability scanning is a critical component of any penetration testing assignment. The labs in this module will provide you with real-time experience in network scanning and vulnerability scanning. Exercise 1: UDP and TCP Packet Crafting Techniques using HPING3 Scenario Overview In network scanning, your first procedure will be to scan the target network to determine all possible open ports, live hosts, and services running. Knowledge of packet crafting techniques may help you to scan the network beyond the firewall or IDS. Lab Scenario Packet crafting is a technique that allows you to probe firewall rule sets and find entry points into a targeted system or network. This is done by manually generating packets
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to test network devices and behavior, instead of using existing network traffic. This lab will help you understand how to perform network scanning and packet crafting using hping3 commands. Lab Duration : 10 Minutes 1. Click Windows 10 machine, click Ctrl+Alt+Delete link.
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2. By default Admin user account is selected, click Pa$$w0rd and press Enter to login. 3. Navigate to Start --> All Apps and click Wireshark to launch the application.
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Open File - Security Warning pop-up appears click Run User Account Control pop-up appears, click Yes 4. Wireshark main window appears as shown in the screenshot. Double- click the Ethernet interface to start capturing packets.
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5. Wireshark starts capturing the traffic on the Ethernet interface.
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