Enumeration is fundamentally checking. An attacker sets up a functioning associated with the objective host. The weaknesses are then tallied and evaluated. It is done mostly to look for assaults and dangers to the objective framework. Enumeration is utilized to gather usernames, hostname, IP addresses, passwords, arrangements, and so on. At the point when a functioning connection with the objective host is set up, hackers oversee the objective framework. They at that point take private data and information. Now and again, aggressors have additionally been discovered changing the setup of the objective frameworks. The manner in which the connection is set up to the host decides the information or data the attacker will have the option to get to.

To enumerate is defined as to mention things one by one or to make clear the number of things. An example of enumerate is when you list all of an author's works one by one.

Enumeration is a part of the first phase of ethical hacking which is information gathering. It is a process where the attacker establishes an active connection with the target and tries to find as many factors possible, which could be used to carry out the attack.This technique can be used to gain information on −

• Network shares

• SNMP data, if they are not secured properly

• IP tables

• Usernames of different systems

• Passwords policies lists

• It depend on the services that the systems offer that could include the following −

  • DNS enumeration

  • NTP enumeration

  • SNMP enumeration

  • Linux/Windows enumeration

  • SMB enumeration

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