CND 312-38 Reddit Questions

A DMZ, or demilitarized zone, is a physical or logical subnetwork that contains and exposes an organization’s external-facing services to an untrusted network, usually the internet. The purpose of a DMZ is to add an additional layer of security to an organization’s local area network (LAN): an external attacker only has direct access to equipment in the DMZ, rather than any other part of the network. The term ‘neutral zone’ refers to the fact that the DMZ is separated from both the internal network and the untrustednetwork, which helps prevent attackers from directly accessing internal servers and data. It is not a file integrity monitoring mechanism, does not serve as a proxy, and typically does not include sensitive internal servers like database servers, which are kept inside the trusted network for security reasons123.

References:

• Fortinet’s explanation of a DMZ network1.
• EC-Council’s Certified Network Defender (CND) course outline2.
• An article on strengthening network security with DMZ3.

Physical controls are security measures that are designed to deny unauthorized access to facilities, equipment, and resources, and to protect personnel and property from damage or harm. Security labels and warning signs fall under this category as they are part of the physical measures taken to alert individuals about security protocols and to deter unauthorized access. These controls are a critical aspect of an organization’s overall security strategy, ensuring that sensitive information and assets are physically secured against unauthorized access or alterations.

References: The categorization of security labels and warning signs as physical controls is consistent with the Certified Network Defender (CND) course materials, which outline various types of security controls and their respective roles in protecting networked systems12.

Data masking, also known as data obfuscation, is the process of hiding original data with modified content (characters or other data). This technique is used to protect sensitive information while maintaining a functional substitute for occasions when the real data is not required. For example, in a test database environment, data masking can be used to create a version of the data that is safe for developers to use without exposing sensitive information. Unlike encryption, which can be reversed with the correct key, data masking is meant to be non-reversible and maintains the format of the data so that it can be used without decryption.

References: The explanation provided aligns with the objectives and documents of the Certified Network Defender (CND) course, which emphasizes the importance of protecting information by obscuring specific areas that contain sensitive data. The reference to data masking as a means to ensure information protection is supported by industry sources123.

SYN flood attempts are a type of Denial of Service (DoS) attack. They are designed to exploit the TCP handshake process by sending a large number of SYN packets to a target server, which can overwhelm the server’s resources and prevent legitimate users from establishing a connection. The goal of a SYN flood is not to gain unauthorized access or gather information, but rather to disrupt the normal operation of a service, making it a Denial of Service attack.

References: The categorization of SYN flood attempts as a Denial of Service attack is consistent with the information provided in various cybersecurity resources, including those related to the Certified Network Defender (CND) course, which outlines the different types of network attacks and their characteristics123.