Complete Ethical Hacking Course > Ethical Hacking Phases

Nmap Scanning Methods - Part 1

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TCP connect() scanning [-sT] and SYN scanning (also known as half-open, or stealth scanning) [-sS] are the two most common scan types in Nmap.

  • Download the installer.
  • Run the installer.
  • Open NMap/Zenmap.
  • Enter the target address.
  • Download the installer.
  • Run the installer.
  • Open NMap/Zenmap.
  • Enter the target address.
  • Choose a profile.
  • Click Scan.
  • Review the results.
  • Choose a profile.
  • Click Scan.
  • Review the results.
    • #BBD0E0 »

    A method of discovering whether ports on a network are open and could be receiving or delivering data is known as port scanning. It's also a method of sending packets to certain ports on a host and analysing the answers to find flaws.

    Nmap offers multiple scanning methods, each with its own strengths and weaknesses. There are three main types of scans:

    • Host discovery scans rely on sending TCP packets to every IP address in the target range.
    • Service discovery scans use ARP requests to determine which IP addresses are reachable by the target's gateway.
    • OS detection scans send ICMP echo requests to the target IP addresses in order to determine what operating system is running on each host.

    Nmap is a network traffic scanning tool that improves on earlier network auditing tools to perform speedy and thorough scans of network traffic. It operates by identifying active hosts and IPs on a network using IP packets, then analysing these packets to offer information on each host and IP, as well as the operating systems they are running.

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    Course Content

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      7m 23s

    1. Overview of Ethical Hacking
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    2. Key Terminologies - Part 1
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    3. Key Terminologies - Part 2
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    4. Key Terminologies - Part 3
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    5. Key Terminologies - Part 4
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    6. Common Cyber Attacks
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    7. Operating System Cyber Attacks
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    8. Types of Hackers
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    9. Introduction to Linux & Kernel
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    10. File Securing Techniques
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    11. Setting up a Hacking Lab using Kali Linux - Part 1
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    12. Setting up a Hacking Lab using Kali Linux - Part 2
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    13. Setting up a Hacking Lab using Metasploit
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    14. Basic Linux commands in Linux
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    15. File commands in Linux
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    16. Folder commands in Linux
      16m 10s
    17. Shell commands in Linux
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    18. Linux Directories
      13m 27s
    19. Assignment : Introduction to Ethical Hacking
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    1. Key Terminologies in Ethical Hacking
      11m 47s
    2. Overview of Vulnerabilities
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    3. Phases of Ethical Hacking
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    4. Introduction to Footprinting
      21m 49s
    5. Eavesdropping Attack
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    6. Overview of Nmap
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    7. Nmap Scanning Methods - Part 1
      28m 33s
    8. Nmap Scanning Methods - Part 2
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    9. Assignment : Ethical Hacking Phases
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    1. Internet Assigned Numbers Authority
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    2. Introduction to IP Addressing
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    3. IPv4 Addresses
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    5. IP Address Detection
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    6. Ping Requests and Ping Sweep
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    10. ARP Spoofing Overview
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    11. ARP Spoofing Demo
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    12. IP Spoofing Overview
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    13. IP Spoofing Demo
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    14. MAC Flooding
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    15. DNS Enumeration - 1
      12m 20s
    16. DNS Enumeration - 2
      21m 29s
    17. VLAN Hopping Part - 1
      8m 3s
    18. VLAN Hopping Part - 2
      4m 31s
    19. Countermeasures against Network Securities Attack
      3m 2s
    20. Assignment : Hacking and IP Addresses
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    1. Introduction to Routing Terminologies
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    2. Ports - I
      14m 8s
    3. Ports - II
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    4. Virtual Port Numbers
      10m 10s
    5. Port Scanning
      10m 47s
    6. Port Scanning with Zenmap Part -1
      13m 39s
    7. Port Scanning with Zenmap Part -2
      8m 14s
    8. Advanced Port Scanner
      23m 14s
    9. Countermeasures to Prevent Port Scanning
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      2m 37s
    11. Wireshark Part 2
      11m 53s
    12. Assignment : Hacking and Ports
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    2. Top Level Domain
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      14m 11s
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      8m 42s
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      8m 32s
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      11m 32s
    10. Data Tapping
      17m 9s
    11. Assignment : Hacking and Domain Name Servers
      1m 32s

    1. Introduction to User Identification
      5m 23s
    2. Identity Attacks
      5m 23s
    3. Anonymous Browsing
      15m 17s
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      10m 4s
    5. Types of Virtual Private Networks
      13m 8s
    6. Virtual Private Network Protocols
      20m 12s
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      10m 38s
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      9m 20s
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      7m 37s
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      4m 14s
    13. Steganography Demo
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    1. Basics of Email ID
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      12m 26s
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    5. Trojan
      5m 45s
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    5. Countermeasures
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    2. Packet Sniffing - Part 2
      10m 56s
    3. TCP Dump
      23m 26s
    4. Assignment : Hacking and Sniffing
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    1. Introduction to Phishing
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      14m 16s
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    12. DOM XSS Exploits
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    1. Overview of Website Hacking
      3m 20s
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      43m 27s
    3. Hacking Admin Panel on Websites
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      2m 59s
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    6. Blind SQL - Part 1
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      20m
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      23m 23s
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      7m 12s
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      22m 32s
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      9m 8s
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    24. Assignment : Website Hacking
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    25. Assignment : Website Hacking
      2m 31s

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    2. Android Web View Exploits
      4m 44s
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      10m 29s
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      2m 9s

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      3m 43s
    2. The 419 Scam
      4m 7s
    3. Assignment : Reporting Cyber Crimes
      34s

    1. Introduction to Cyber Laws
      5m 33s
    2. Cyber laws
      10m 57s
    3. Cyber Crime Portals Part 1
      2m 17s
    4. Cyber Crime Portals Part 2
      14m 32s
    5. Cyber Crime Portals Part 3
      10m 45s
    6. Chain of Custody
      4m 23s
    7. Incident Response-1
      5m 50s
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      5m 36s
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      8m 29s
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    1. Course Summary
      5m 45s

    1. Interview Questions
      27m 31s

    1. Career Guideline
      3m 5s
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