Book Image

CompTIA CASP+ CAS-004 Certification Guide

By : Mark Birch
Book Image

CompTIA CASP+ CAS-004 Certification Guide

By: Mark Birch

Overview of this book

CompTIA Advanced Security Practitioner (CASP+) ensures that security practitioners stay on top of the ever-changing security landscape. The CompTIA CASP+ CAS-004 Certification Guide offers complete, up-to-date coverage of the CompTIA CAS-004 exam so you can take it with confidence, fully equipped to pass on the first attempt. Written in a clear, succinct way with self-assessment questions, exam tips, and mock exams with detailed explanations, this book covers security architecture, security operations, security engineering, cryptography, governance, risk, and compliance. You'll begin by developing the skills to architect, engineer, integrate, and implement secure solutions across complex environments to support a resilient enterprise. Moving on, you'll discover how to monitor and detect security incidents, implement incident response, and use automation to proactively support ongoing security operations. The book also shows you how to apply security practices in the cloud, on-premises, to endpoints, and to mobile infrastructure. Finally, you'll understand the impact of governance, risk, and compliance requirements throughout the enterprise. By the end of this CASP study guide, you'll have covered everything you need to pass the CompTIA CASP+ CAS-004 certification exam and have a handy reference guide.
Table of Contents (23 chapters)
1
Section 1: Security Architecture
6
Section 2: Security Operations
11
Section 3: Security Engineering and Cryptography
16
Section 4: Governance, Risk, and Compliance

Indicators of compromise

There are many events that would take place on a busy network. Events can be recorded in logs (where an event is unusual) or coupled with another event that itself appears unusual. This could be an indicator of compromise (IOC). Another example of an IOC could be several unsuccessful attempts to connect using SSH to a core network appliance, followed by a successful authentication attempt from an unusual or gray-listed IP address. It is important for the security operation center to be able to identify attacks or threats. To identify IOCs, we need inputs in the form of logs and captured network traffic.

Packet capture

Packet capture (PCAP) files use a standard log format. They allow us to capture real-time data. Captured data can be analyzed using Wireshark, tcpdump, or tshark. See Wireshark capture in Figure 5.7:

Figure 5.7 – PCAP file

The PCAP format allows logs to be analyzed using different vendor tools and platforms...