Ethical Hacking Scanning Techniques Quiz: Types of Network Scanning

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Questions and Answers

What is the main purpose of scanning in ethical hacking?

To identify potential vulnerabilities and weaknesses

Why is understanding port numbers important in scanning activities?

To identify what services are running on each server

What is the key role of tools like nmap in network scanning?

Identifying all computers or servers on a network

Why is detailed host scanning important in ethical hacking?

To identify the operating system, software versions, and available services on a particular host Signup and view all the answers

How do tools like nmap determine the operating system of a target system?

By using fingerprinting techniques to detect small variations in network messages Signup and view all the answers

Why is port scanning essential in ethical hacking activities?

To identify what services are running on each server Signup and view all the answers

What is the significance of indirect methods for determining the operating system of a target system?

They can reveal subtle differences based on the OS when analyzing login attempts Signup and view all the answers

What role do port numbers play in differentiating traffic between applications running on a computer?

Each computer has 65,535 available ports for differentiating traffic between applications Signup and view all the answers

What distinguishes network scanning from port scanning in ethical hacking?

Network scanning focuses on discovering all computers or servers on a network while port scanning identifies services running on servers Signup and view all the answers

What differentiates direct host scanning from detailed host scanning in ethical hacking?

Direct host scanning does not reveal software versions while detailed host scanning includes identifying software versions of services Signup and view all the answers

Which of the following statements accurately describes the purpose of banner grabbing?

To extract information about a target system's operating system by analyzing responses received when interacting with it Signup and view all the answers

Which of the following is a necessary step in the overall hacking process before conducting detailed scanning techniques?

Reconnaissance and footprinting Signup and view all the answers

Which of the following ports were discovered to be open on the website's server during the scanning process?

Port 22 (SSH) and Port 80 (HTTP) Signup and view all the answers

Which of the following tools was used to examine the web server running on port 80?

Nmap Signup and view all the answers

Which of the following statements accurately describes the purpose of using ICMP Echo messages in network scanning?

To determine live hosts on a network Signup and view all the answers

What tool is commonly used for sending ICMP Echo messages to test network connectivity?

Ping Signup and view all the answers

Which of the following scanning techniques does the speaker showcase using Nmap?

Ping sweep and scanning a range of IP addresses Signup and view all the answers

Which of the following tools is essential for network security testing?

Nmap, Nessus, Burp Suite, SQLmap, NCat, Snort, and Wireshark Signup and view all the answers

Which of the following types of scanning is mentioned in the text?

Network scanning, port scanning, host scanning, and vulnerability scanning Signup and view all the answers

What is the primary purpose of using vulnerability scanning tools like Nessus and Burp Suite?

To identify weaknesses in systems for security improvement Signup and view all the answers

Study Notes

Scanning is a crucial phase in ethical hacking to gather information about target systems, networks, and resources such as web servers, email servers, file servers, databases, switches, routers, firewalls, identity management systems, and more.
Scanning helps identify potential vulnerabilities, entry points, and weaknesses in a system, whether for hacking purposes or to enhance security.
Different types of scanning include network scanning (using tools like nmap to discover all computers or servers on a network) and port scanning (to identify what services are running on each server).
Port numbers are essential for differentiating traffic between multiple applications running on a computer, with each computer having 65,535 available ports.
Understanding what services are running on a target system and which ports they are using is crucial for identifying potential vulnerabilities and entry points.
Detailed host scanning involves identifying the operating system, software versions, and available services on a particular host.
Tools like nmap use fingerprinting techniques to detect small variations in network messages, providing clues about the operating system in use.
Indirect ways to determine the operating system of a target system include analyzing how the system responds to login attempts, which can reveal subtle differences based on the OS.
Banner grabbing is a method used to extract information about a target system's operating system by analyzing the responses received when interacting with it.
Scanning is a necessary step in the overall hacking process, following activities like OSINT, reconnaissance, and footprinting to gather high-level information about the target before diving into more detailed scanning techniques.- The speaker describes accessing a website called www.usb.Cloud and conducting various tests on it while ensuring not to breach any laws by unauthorized access.
Through NS lookup and other tools like Dig, the speaker obtains the IP address and DNS information of the website.
By using Nmap against the IP address, the speaker discovers that ports 22 (SSH) and 80 (HTTP) are open on the website's server.
Port 80 indicates the presence of a web server, while port 22 suggests SSH access to the server for deeper interaction beyond browsing the website.
Banner grabbing on port 22 reveals the software running (OpenSSH) and the operating system (Linux 5.x 2.0), providing valuable information for potential vulnerabilities.
Further probing with Nmap identifies the website as hosted on Amazon Web Services, running Linux 5.x, with high probability estimates of the operating system version.
The speaker also examines the web server on port 80, discovering it runs on Nginx version 1.18 on Ubuntu Linux.
Details like the server software version (Nginx 1.18) can lead to researching potential security weaknesses or vulnerabilities to exploit.
Knowledge of HTTP commands like HEAD and understanding tools like Nmap, curl, and their functionalities are essential for conducting detailed reconnaissance on websites and servers.- The speaker discusses using tools like Curl, Nmap, and Telnet for network scanning.
Vulnerability scanning involves tools like Nessus and Burp Suite to identify weaknesses and vulnerabilities in systems.
Nmap can be used for network mapping by sending ICMP Echo messages to determine live hosts.
ICMP Echo messages are control messages used to test connectivity between devices in a network.
Tools like Ping are commonly used for ICMP Echo testing to check if hosts are alive.
Ping sweep feature in Nmap allows scanning of a range of IP addresses by sending ICMP Echo messages.
The speaker demonstrates how to use Nmap for ICMP Echo testing and scanning IP addresses for live hosts.
Using Ping or ICMP Echo messages is not illegal and is a standard method for checking network connectivity.
Scanning large ranges of IP addresses without permission can potentially lead to legal issues and is not encouraged.
The speaker showcases how Nmap can be used to scan a large range of IP addresses and identify live hosts.
Network scanning tools like Nmap, Nessus, Burp Suite, SQLmap, NCat, Snort, and Wireshark are essential for network security testing.
Nmap can be used for ping sweeps, port scanning, and network mapping to gather information about hosts on a network.
Understanding ICMP control messages like Echo is important for troubleshooting network connectivity.
Network scanning involves sending control messages like ICMP Echo to determine live hosts and potential vulnerabilities.
The speaker emphasizes the importance of ethical use of network scanning tools and avoiding unauthorized scanning.
Different types of scans include network scanning, port scanning, host scanning, and vulnerability scanning.
Vulnerability scanning tools like Nessus and Burp Suite help identify weaknesses in systems for security improvement.
The speaker demonstrates how to perform network scanning using Nmap and ICMP Echo messages.
Ping and ICMP Echo messages are commonly used for basic network troubleshooting and testing connectivity between devices.
Scanning a large range of IP addresses without permission can lead to legal consequences and is not recommended.
Nmap's ping sweep feature allows scanning a range of IP addresses to identify live hosts on a network.
It is important to understand the ethical implications of network scanning and only perform scans with proper authorization.

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Ethical Hacking Scanning Techniques Quiz