The word Reconnaissance is derived or borrowed from its military use, where it means as a Mission into enemy territory to gather all the necessary information. Now if we talk in the terms of Computer and the digital world then Reconnaissance is usually a preliminary step toward the further attack seeking to exploit the target system.
In the field of Ethical Hacking and Cyber Security, The first step to penetrate into your target is Information Gathering and getting to know about your target system is one of the basic and initial steps for Ethical Hacking.
Now first let’s talk about Reconnaissance, what does it really mean in the technical form?
So, Reconnaissance is a set of process and technique which is used to discover and collect information about the target system.
During the Reconnaissance process, the Hacker/Attacker tries to gather as much information about the target system as possible. So, here I am listing the important seven steps during the Reconnaissance Process:
- Gather Initial Information
- Determine the network Range
- Identify the Active Machine / System
- Discover the Open Ports
- Fingerprint the target Operating System
- Uncover all the services on ports
- Map the identified Network
We are going to discuss in detail in the Upcoming Chapters of this course. Now let’s discuss the types of Reconnaissance. So, It is of two types Active Reconnaissance and other is Passive Reconnaissance.