Footprinting as the name suggests that this is the method used to gather the important information about the target computer system or a target server, it is a process of gathering all available information about an organization, Footprinting is a part of Reconnaissance, Here Footprinting can be again divided into further two types i.e ACTIVE FOOTPRINTING & PASSIVE FOOTPRINTING.
Now let’s look at all the information which an Ethical Hacker can gain in the Process of Foot printing:
GAINING INFORMATION ABOUT IP ADDRESS:
You can find the IP (Internet Protocol) address of any Domain name using the “ping” command in the Command Prompt (for windows OS) and in terminal (for Linux OS). The good thing about this Ping command is that it runs in both Windows as well as Linux Operating
System with the same syntax i.e. “ping ‘domain name’” (without quotes)
Here I have used my blog (hackingethicalpro.blogspot.in) as a target, so you can see the I have written ping command followed by the domain name in command prompt and you can clearly see that it tries to make connection with the followed domain name by sending it the packets over the network and in return it gives the IP (Internet Protocol) address of the domain name (bounded around the red box is the required IP address of the followed domain name).
GAINING INFORMATION ABOUT DOMAIN NAME:
You can use WHOIS LOOKUP to find all the information about your target Domain Name such as “DOMAIN INFORMATION, REGISTRANT CONTACT, ADMINISTRATIVE CONTACT, TECHNICAL CONTACT, AND WHOIS RAW DATA”.
You can go to http://www.whois.com/whois
Here I have used my blogs Domain Name (hackingethicalpro.blogspot.in) to find the information about, and here is all the information about the above domain name:
GAINING INFORMATION ABOUT HOSTING COMPANY:
In this process, a Hacker gain all the information about that company who is hosting the target’s Domain, and providing it a cloud storage support and all, it also provides the actual Geo location such as Country, State, City etc.
Such information can easily be found at http://ip2location,com/
Here is an example:
Here I have used my Blog’s IP Address (18.104.22.168) to find all the information about the hosting company of my Domain Name.
GAINING INFORMATION ABOUT HISTORY OF WEBSITE:
Finding the history of any website or any domain name prove to be one the greatest advantage for a Hacker, because from this he can know each back record of that website or domain name and can perform his/her attack more effectively.
You can visit https://web.archive.org/ to find the archive of any website or any domain name.
Here is an example:
Here I have used my University’s Domain name i.e. Lovely Professional University.