Exam Name: GIAC Certified Intrusion Analyst
Certification Provider: GIAC
Corresponding Certification: GIAC Information Security
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Updated: May 28, 2026
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How to Prepare For GCIA Certification Exam
Preparation Guide for GCIA Certification Exam
GCIA: Tips to survive if you don't have time to read all the page
GIAC exams are conducted online in a monitored environment using the advanced GIAC exam engine, which has been developed based on years of industry experience, customer feedback, and ANSI requirements. The GIAC exam development process has been accredited according to IEC / ISO / ANSI 17024 and is one of the most rigorous in the sector. The subject evaluated in the GIAC certification exams is based on validated objectives for the area of knowledge of the certification provided. All GIAC certification attempts consist of a single exam that covers all certification objectives. During the exam, candidates can send exam questions to the GIAC exam development team exam. Candidates cannot see the exam questions at the end of the exam. If you have technical problems during the exam, notify your supervisor immediately. The format is multiple choices, multiple answers, Length of Examination are 4 Hours, Number of Questions are 100-150, Passing score is 73% and Language: English. GIAC Certification has a duration of four years each GIAC certification is valid for four years. CPEs must be obtained within two years prior to the expiration date of the certification, with the exception of training. The CPE obtained through the training can be acquired in the three years prior to the expiration date of the certification
Reference: http://www.giac.org/certification/certified-intrusion-analyst-gcia
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GIAC GCIA Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Silk and Other Traffic Analysis Tools | - The candidate will demonstrate an understanding of SiLK and other tools to perform network traffic and flow analysis. |
| Advanced Analysis and Network Forensics | - The candidate will demonstrate competence in analyzing data from multiple sources (e.g. full packet capture, netflow, log files) as part of a forensic investigation. |
| Packet Engineering | - The candidate will demonstrate knowledge relating to packet crafting and manipulation. |
| IPv6 | - The candidate will demonstrate knowledge of IPv6 and how it differs from IPv4. |
| Tcpdump Filters | - The candidate will demonstrate ability to craft tcpdump filters that match on given criteria. |
| DNS | - The candidate will demonstrate an understanding of how DNS works for both legitimate and malicious purposes. |
| UDP and ICMP | - The candidate will demonstrate understanding of the UDP and ICMP protocols and the ability to discern between typical and anomalous behavior. |
| IDS Rules | - The candidate will create effective IDS rules to detect varied types of malicious activity. |
| Advanced IDS Concepts | - The candidate will demonstrate an understanding of IDS tuning methods and correlation issues. |
| IDS Fundamentals and Network Architecture | - The candidate will demonstrate knowledge of fundamental IDS concepts, such as network architecture options and benefits/weaknesses of common IDS systems. |
| Wireshark Fundamentals | - The candidate will demonstrate skill associated with traffic analysis using Wireshark with an intermediate degree of proficiency. |
| Fragmentation | - The candidate will demonstrate understanding of how fragmentation works, and how to identify fragmentation and fragmentation-based attacks in packet captures. |
| Application Protocols | - The candidate will demonstrate knowledge and skill relating to application layer protocol dissection and analysis. |
| IP Headers | - The candidate will demonstrate the ability to dissect IP packet headers and analyze them for normal and anomalous values that may point to security issues. |
| TCP | - The candidate will demonstrate understanding of the TCP protocol and the ability to discern between typical and anomalous behavior. |
| Concepts of TCP/IP and the Link Layer | - The candidate will demonstrate understanding of the TCP/IP communications model and link layer operations. |
| Network Traffic Analysis | - The candidate will demonstrate the ability to analyze network and application traffic to identify both normal and malicious behaviors. |
The benefit in Obtaining the GCIA Exam Certification
Advantages of the GIAC certification in information security for individuals. For system and network administrators and security professionals, the program offers additional guarantees of knowing what activities should be carried out to protect systems and networks and of having the necessary skills to perform these activities.
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The GIAC GCIA exam is taken by those candidates who are interested in obtaining the GIAC Certified Intrusion Analyst certification.
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