Introduction to Ethical Hacking
Scanning networks is an important part of the ethical hacking process. It involves identifying hosts and services on a network, as well as their operating systems and applications. There are different types of scanning techniques that can be used to gather this information, including:
Port scanning is the process of scanning a network for open ports. An open port is a network port that is actively accepting incoming data packets. By determining which ports are open on a target system, an attacker can identify potential vulnerabilities that can be exploited. There are different types of port scans that can be used, including:
TCP scans are the most common and involve sending TCP packets to a range of ports on a target system. The response from the system can indicate whether a port is open or closed.
UDP scans involve sending UDP packets to a range of ports on a target system. The response from the system can indicate whether a port is open, closed, or filtered.
Stealth scans are a type of port scan that are designed to avoid detection by intrusion detection systems (IDS) and firewalls. They involve sending packets with different flags set to a range of ports on a target system.
Network mapping involves identifying the devices connected to a network and their relationships with each other. This helps in creating a map of the network topology.
Vulnerability scanning involves using automated tools to scan a network for known vulnerabilities. These tools can identify vulnerabilities in operating systems, applications, and network devices.
Ethical hackers use scanning techniques to identify potential vulnerabilities in a network. By identifying these vulnerabilities, they can help organizations improve their security posture and protect against cyber attacks.
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