Footprinting (also known as reconnaissance) is the technique used for gathering information about computer systems and the entities they belong to. To get this information, an ethical hacker might use various tools and technologies. This information is very useful to an ethical hacker who is trying to crack a whole system. Footprinting is basically the first step where hacker gathers as much information as possible to find ways to intrude into a target system or at least decide what type of attacks will be more suitable for the target. This is also a very important step for ethical hacker; he can find possible attacks, vulnerabilities and patch that.
During this phase, a hacker can collect the following information −
- Domain name computer world
- IP Addresses
- Namespaces
- Employee information
- Phone numbers
- E-mails
- Job Information .
Some techniques, tools, commands are use for footprinting.
1.Command: Ping /
PING (Packet INternet Groper) command is the best way to test connectivity between two nodes. Whether it is Local Area Network (LAN) or Wide Area Network (WAN). Ping use ICMP (Internet Control Message Protocol) to communicate to other devices. You can ping host name of ip address.
2.Who is lookup
You can search any ip or any domain name. You can simply enter the domain name whose information you’d like to view into the search field on the WHOIS main page. You can retrieve key data about a domain in this way, including availability, ownership, creation, and expiration details.
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