200-201 Exam Dumps : Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS)

When analyzing Wireshark traffic for potential attacks, an engineer should look for patterns that indicate abnormal behavior, such as:

• Excessive Requests: A high number of requests over a short period could suggest an attempt to overwhelm the server, known as an HTTP flood.
• Status Codes: Repeated 403 Forbidden responses may indicate that the server is rejecting requests due to a security rule being triggered.
• Request Types: A mix of GET and POST requests could be used in various attack scenarios, including bandwidth flooding or cache bypassing.

Digital certificates are electronic documents that use public key cryptography to verify the identity and authenticity of the sender and the receiver of encrypted communications. Digital certificates are issued and signed by trusted entities called certificate authorities (CAs), and they contain information such as the public key, the name, and the expiration date of the certificate. Digital certificates enable network security devices to decrypt perimeter traffic and inspect it for command and control communications or other malicious activity. References := Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) - Cisco, page 51.

The exhibit shows a Stealthwatch dashboard displaying information on alarming hosts, alarms by type, and today’s alarms. On the left side under “Top Alarming Hosts,” there are five host IP addresses listed with their respective categories indicating different types of alerts including ‘Data Hoarding’ and ‘Exfiltration.’ In “Alarms by Type” section at center top part of image shows bar graphs representing various alarm types including ‘Crypto Violation’ with their respective counts. On right side under “Today’s Alarms,” there’s a table showing the details of each alarm such as the host IP, the alarm type, the severity, and the time. The potential threat identified in this dashboard is that host 10.201.3.149 is receiving almost 19 times more data than is being sent to host 152.46.6.91, which is a sign of data exfiltration. Data exfiltration is the unauthorized transfer of data from a compromised system to an external destination, such as a command and control server or a malicious actor. This can result in data loss, breach of confidentiality, and damage to the organization’s reputation and assets. References := Cisco Cybersecurity Operations Fundamentals - Module 7: Network and Host Forensics