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Candidates for GCIA Validation
The GIAC GCIA certification exam targets those individuals who want to leverage their knowledge on host monitoring, intrusion detection, and traffic analysis. This test is also suitable for any practitioner who occupies roles dedicated to intrusion detection. Then, system analysts or network engineers are interested in taking this certification test. Another category of specialists is formed of network administrators, security analysts, and hands-on security managers. Apart from them, any individual who wants to consolidate his/her skills in monitoring and configuring systems dedicated to intrusion detection, or interpret different data for network traffic analysis can be a target candidate for this GCIA test.
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Topics Tested in Official Testing
A candidate’s success in the GCIA exam is defined by his/her ability to develop the skills tested for the certification. Therefore, if they want to be successful, exam-takers should demonstrate that they can perform the following tasks:
- Understanding the TCP protocol and making the difference between the anomalous and typically normal behavior;
- Understanding how the ICMP and UDP protocols work and discerning the main differences between abnormal and normal behavior;
- Managing to develop comprehensive rules for IDS architecture for detecting different types of malicious activity;
- Understanding how the DNS architecture works and contribute to the development of methods that prevent malicious issues from happening;
- Analyzing different types of data collected from various source to form a forensic investigation;
- Analyzing application and network traffic for identifying any malicious or normal behaviors;
- Understanding the IDS correlation problems and tuning methods;
- Working with TCP/IP models of communications and manage to link-layer operations;
- Demonstrating the ability to work with IP packet headers, dissect, and analyze each of them for detecting any normal or abnormal values that might cause security problems;
- Performing traffic analysis with the help of Wireshark by using an intermediate level of knowledge.
- Understanding how the SiLK tools and others dedicated to traffic analysis work as well as being able to develop flow analysis;
- Manipulating and crafting packet engineering features;
- Demonstrating the ability to using application layer analysis and protocol dissection;
- Understanding the differences between IPv4 and IPv6 architecture;
- Crafting different tcpdump filters for meeting different types of business criteria;
- Working with IDS concepts and becoming an expert in managing different options related to network architecture and understanding the benefits and weaknesses that the most common IDS systems have;
Reference: http://www.giac.org/certification/certified-intrusion-analyst-gcia
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GIAC GCIA Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Traffic Analysis Tools & Techniques | 15% | - Full packet capture and log correlation - Flow analysis with SiLK and NetFlow/IPFIX - Wireshark, tcpdump, filter creation and packet inspection |
| Topic 2: IDS/IPS Concepts & Signatures | 20% | - Detection logic, evasion and correlation - IDS/IPS architecture, deployment and tuning - Snort and Zeek rule writing and optimization |
| Topic 3: Network Forensics & Incident Analysis | 5% | - Reconstructing incidents from captures and logs - Identifying attack vectors and compromise indicators |
| Topic 4: Advanced Intrusion Detection | 15% | - Detecting APTs, lateral movement and beaconing - Covert channels and encrypted traffic analysis - Threat intelligence mapping and MITRE ATT&CK |
| Topic 5: Traffic Analysis & Protocol Fundamentals | 25% | - TCP/IP model and link layer operations - IP, IPv6, TCP, UDP, ICMP header analysis - Packet fragmentation, TTL, checksums and anomalies - Protocol state machines and normal behavior |
| Topic 6: Application Protocol Analysis | 20% | - Data exfiltration and tunneling indicators - Anomaly detection in application-layer communications - HTTP, DNS, SMTP, FTP and SSH traffic analysis |








