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Jay, a network administrator, was monitoring traffic flowing through an IDS. Unexpectedly, he received an event triggered as an alarm, although there is no active attack in progress.
Identify the type of IDS alert Jay has received in the above scenario.
A false positive alert is a type of IDS alert that occurs when the IDS mistakenly identifies benign or normal traffic as malicious or suspicious, and triggers an alarm, although there is no active attack in progress. A false positive alert can be caused by various factors, such as misconfigured IDS rules, outdated signatures, network anomalies, or legitimate traffic that resembles attack patterns. A false positive alert can waste the time and resources of the security team, as they have to investigate and verify the alert, and also reduce the trust and confidence in the IDS. A false positive alert can be reduced by tuning and updating the IDS, filtering out irrelevant traffic, and using multiple detection methods. A false positive alert is the type of IDS alert Jay has received in the above scenario, as he received an event triggered as an alarm, although there is no active attack in progress. Reference:
False Positive Alert - Week 10: Intrusion Detection and Prevention Systems
What is a False Positive in Cybersecurity?
How to Reduce False Positives in Intrusion Detection Systems
Identify the loT communication model that serves as an analyzer for a company to track monthly or yearly energy consumption. Using this analysis, companies can reduce the expenditure on energy.
Joseph, a security professional, was instructed to secure the organization's network. In this process, he began analyzing packet headers to check whether any indications of source and destination IP addresses and port numbers are being changed during transmission.
Identify the attack signature analysis technique performed by Joseph in the above scenario.
Atomic-signature-based analysis is a type of attack signature analysis technique that uses a single characteristic or attribute of a packet header to identify malicious traffic. Atomic signatures are simple and fast to match, but they can also generate false positives or miss some attacks. Some examples of atomic signatures are source and destination IP addresses, port numbers, protocol types, and TCP flags. Atomic-signature-based analysis is the technique performed by Joseph in the above scenario, as he analyzed packet headers to check whether any indications of source and destination IP addresses and port numbers are being changed during transmission. Reference:
[Understanding the Network Traffic Signatures] - Module 12: Network Traffic Monitoring
Network Defense Essentials (NDE) | Coursera - Week 12: Network Traffic Monitoring
[Network Defense Essentials Module 12 (Network Traffic Monitoring) - Quizlet] - Flashcards: What are Network Traffic Signatures?
John is working as a network administrator in an MNC company. He was instructed to connect all the remote offices with the corporate office but at the same time deny communication between the remote offices. In this process, he configured a central hub at the corporate head office, through which all branch offices can communicate.
Identify the type of VPN topology implemented by John in the above scenario.
Which of the following access control models refers to assigning permissions to a user role based on the rules defined for each user role by the administrator?
