CISSP Fix

WHOIS is a famous protocol chiefly used for database query to determine the information of Internet resources like domain name, IP address, or any autonomous address. WHOIS lookup is basically performed with command user interface. Many web-based tools are available to perform WHOIS query. This service is usually communicated using the Transmission Control Protocol (TCP). Server listens to the request on the port number 43. The WHOIS system is originally developed for the system administrator to acquire contact information for different IP address or domain name administrators. Now a days WHOIS lookup query evolved into various different important aspects, including:

Footprinting in computer is actually the process of collecting data with regard to a specific network environment, usually for the purpose of finding ways to intrude into the environment. Footprinting can reveal system vulnerabilities and improve the ease with which they can be exploited. Footprinting begins by determining the location and objective of an intrusion. Once this is known, specific information about the organization is gathered using non-intrusive methods. For example, the organization’s own Web page may provide a personnel directory or employee bios, which may prove useful if the hacker needs to use social engineering to reach the objective. Conducting a whois query on the Web provides the domain names and associated networks related to a specific organization. Other information obtained may include learning the Internet technologies being used; the operating system and hardware being used; IP addresses; e-mail addresses and phone numbers; and policies and procedures.