SEC503: Intrusion Detection In-Depth | SANS Cyber Security Training
What is SEC503: Intrusion Detection In-Depth?
If you are a network security professional who wants to learn how to defend your network from emerging threats, perform effective threat hunting, and master the most widely used tools in the industry, then SEC503: Intrusion Detection In-Depth is the course for you.
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SEC503 is a six-day course that delivers the technical knowledge, insight, and hands-on training you need to confidently monitor, analyze, and respond to network activity. You will learn about the underlying theory of TCP/IP and the most used application protocols so that you can intelligently examine network traffic to identify signs of intrusion. You will also learn how to configure and run open-source intrusion detection systems (IDS), such as Snort and Bro, to detect network anomalies and attacks. Finally, you will learn how to use various tools and techniques to perform network forensics and monitoring tasks, such as finding network behavior anomalies, reconstructing network attacks, and carving out suspicious file attachments.
SEC503 is not for people who are simply looking to understand alerts generated by an out-of-the-box IDS. It is for people who want to deeply understand what is happening on their network today, and who suspect that there are very serious things happening right now that none of their tools are telling them about. If you want to be able to find zero-day activities on your network before disclosure, this is definitely the class for you.
SEC503 is also one of the most important courses that you will take in your information security career. While past students describe it as the most difficult class they have ever taken, they also tell us it was the most rewarding. This course will not only teach you how to instrument your network and perform detailed incident analysis and reconstruction, but it will also force you to develop your critical thinking skills and apply them to these deep fundamentals. This will result in a much deeper understanding of practically every security technology used today.
Why is network monitoring and threat detection important?
Network security is one of the most challenging and dynamic fields in information security. Every day, network security professionals face new and evolving threats that target their networks, such as malware, ransomware, denial-of-service attacks, phishing, and advanced persistent threats. These threats can compromise the confidentiality, integrity, and availability of network resources and data, and cause significant damage to the organization and its reputation.
To protect their networks from these threats, network security professionals need to have a comprehensive and proactive approach to network monitoring and threat detection. Network monitoring and threat detection are the processes of collecting, analyzing, and responding to network activity to identify and mitigate potential threats. Network monitoring and threat detection can help network security professionals to:
Gain visibility into the network traffic and behavior
Detect known and unknown threats in real-time or near real-time
Reduce false positives and false negatives
Investigate the root cause and impact of network incidents
Collect and preserve evidence for forensic analysis
Improve the network security posture and resilience
Network monitoring and threat detection are essential skills for any network security professional who wants to stay ahead of the threat landscape and defend their network effectively.
What are the main topics covered in SEC503?
Packets as a second language
The first two days of SEC503 are dedicated to teaching you how to read, interpret, and analyze network packets. Packets are the basic units of communication in a network, and they contain valuable information about the source, destination, protocol, and content of the network activity. By understanding how packets are structured and what they mean, you can gain a deeper insight into the normal and abnormal behavior of your network.
In this section, you will learn about the TCP/IP protocol stack, which is the foundation of network communication. You will learn how each layer of the stack works, from the physical layer to the application layer, and how they interact with each other. You will also learn how to use tools like Wireshark and tcpdump to capture and examine packets on your network. You will learn how to write filters to selectively examine a particular traffic trait, such as IP address, port number, protocol type, or payload content. You will also learn how to craft packets with Scapy, a powerful Python library that allows you to manipulate packets at any layer of the stack.
Application protocols
The next two days of SEC503 are focused on teaching you how to decode and interpret application protocols. Application protocols are the rules that govern how applications communicate with each other over a network. They define the format, syntax, semantics, and functions of the messages exchanged between applications. Some of the most common application protocols are HTTP, DNS, SMTP, and FTP.
In this section, you will learn how to identify and analyze application protocols on your network. You will learn how to use Wireshark to decode application messages and extract useful information from them. You will also learn how to research and understand new or unknown protocols by using tools like Bro or by reading protocol specifications. You will also learn how to identify signs of intrusion or malicious activity in application protocols, such as command injection, buffer overflow, or data exfiltration.
Open-source IDS: Snort and Bro
The fifth day of SEC503 is dedicated to teaching you how to configure and run open-source intrusion detection systems (IDS), such as Snort and Bro. IDS are tools that monitor network traffic and alert you when they detect suspicious or malicious activity. IDS can be classified into two types: signature-based IDS and behavior-based IDS. Signature-based IDS use predefined rules or patterns to match known attacks or anomalies in network traffic. Behavior-based IDS use statistical or heuristic methods to detect deviations from normal or expected behavior in network traffic.
In this section, you will learn how to compare and contrast Snort and Bro, two popular open-source IDS tools. Snort is a signature-based IDS that uses rules written in a specific syntax to detect attacks or anomalies in network traffic. Bro is a behavior-based IDS that uses scripts written in a specific language to analyze network traffic at multiple layers of abstraction. You will learn how to install, configure, run, and update Snort and Bro on your system. You will also learn how to write your own rules or scripts for Snort or Bro to detect custom attacks or anomalies on your network.
Network traffic forensics and monitoring
Table 2: Article with HTML formatting (continued) In this section, you will learn how to use various sources of network data, such as network flow data, packet capture files, and log files, to perform network traffic forensics and monitoring tasks. You will learn how to use tools like SiLK, a suite of open-source network flow analysis tools, to find network behavior anomalies, such as scanning, brute-forcing, or data exfiltration. You will also learn how to use Wireshark to carve out suspicious file attachments from packet capture files, such as malware, ransomware, or phishing documents. You will also learn how to use tools like Logstash and Kibana to collect and visualize log data from different sources, such as Snort, Bro, or firewall logs.
How can you take SEC503: Intrusion Detection In-Depth?
If you are interested in taking SEC503: Intrusion Detection In-Depth, you have several options to choose from. You can take the course in person at one of the many SANS events around the world, where you can interact with the instructor and other students face-to-face. You can also take the course online via SANS OnDemand or SANS vLive, where you can access the course materials and recordings at your own pace and convenience. You can also take the course in a self-paced format via SANS SelfStudy, where you can receive the course books and MP3 files and study on your own schedule.
Regardless of the format you choose, you will receive the same high-quality content and hands-on training that SANS is known for. You will also receive access to a virtual lab environment where you can practice the skills and techniques you learn in the course. You will also receive access to a discussion forum where you can ask questions and share ideas with the instructor and other students.
How can you prepare for SEC503: Intrusion Detection In-Depth?
SEC503: Intrusion Detection In-Depth is an advanced-level course that requires a solid foundation of network security knowledge and skills. To prepare for this course, you should have at least one year of experience in network security or a related field. You should also have a good understanding of TCP/IP networking concepts and protocols, such as IP addressing, subnetting, routing, switching, TCP/UDP ports, and ICMP messages. You should also be familiar with basic Linux commands and scripting languages, such as Python or Perl.
To help you prepare for this course, SANS offers several resources and tips that you can use. You can take the free SEC503 Prep Course online, which covers some of the essential topics and concepts that you need to know before taking SEC503. You can also read some of the recommended books and articles on network security and intrusion detection that are listed on the SEC503 website. You can also watch some of the webcasts and podcasts that feature SEC503 instructors and topics. You can also practice your packet analysis skills by using tools like Wireshark or tcpdump on your own network or by using online resources like PacketBomb or PacketLife.
Finally, if you want to earn a certification that validates your network monitoring and threat detection skills, you can take the GIAC Certified Intrusion Analyst (GCIA) exam after completing SEC503. The GCIA exam is a four-hour exam that consists of 150 multiple-choice questions that test your knowledge and ability to analyze network traffic and identify intrusions. The exam is open-book and requires a minimum score of 68% to pass. The exam fee is $1,999 USD and includes two practice tests that you can take before the exam.
Conclusion
SEC503: Intrusion Detection In-Depth is a comprehensive and challenging course that teaches you how to monitor, analyze, and respond to network activity using various tools and techniques. By taking this course, you will gain a deep understanding of how TCP/IP protocols work and how to decode and interpret application protocols. You will also learn how to configure and run open-source intrusion detection systems like Snort and Bro to detect network anomalies and attacks. You will also learn how to perform network forensics and monitoring tasks using network flow data, packet capture files, and log files.
If you are a network security professional who wants to learn how to defend your network from emerging threats, perform effective threat hunting, and master the most widely used tools in the industry, then SEC503: Intrusion Detection In-Depth is the course for you. You can take this course in different formats and options, such as in-person, online, or self-paced. You can also prepare for this course by using the free SEC503 Prep Course, reading the recommended books and articles, watching the webcasts and podcasts, and practicing your packet analysis skills. You can also take the GIAC Certified Intrusion Analyst (GCIA) exam after completing this course to earn a certification that validates your network monitoring and threat detection skills.
Don't miss this opportunity to learn from the best instructors and experts in the field of network security and intrusion detection. Enroll in SEC503: Intrusion Detection In-Depth today and take your network security skills to the next level.
FAQs
Q: How long is SEC503: Intrusion Detection In-Depth?
A: SEC503 is a six-day course that consists of six sections, each covering a different topic related to network monitoring and threat detection.
Q: What are the prerequisites for SEC503: Intrusion Detection In-Depth?
A: SEC503 is an advanced-level course that requires a solid foundation of network security knowledge and skills. You should have at least one year of experience in network security or a related field. You should also have a good understanding of TCP/IP networking concepts and protocols, such as IP addressing, subnetting, routing, switching, TCP/UDP ports, and ICMP messages. You should also be familiar with basic Linux commands and scripting languages, such as Python or Perl.
Q: What are the benefits of taking SEC503: Intrusion Detection In-Depth?
A: By taking SEC503, you will learn how to monitor, analyze, and respond to network activity using various tools and techniques. You will gain a deep understanding of how TCP/IP protocols work and how to decode and interpret application protocols. You will also learn how to configure and run open-source intrusion detection systems like Snort and Bro to detect network anomalies and attacks. You will also learn how to perform network forensics and monitoring tasks using network flow data, packet capture files, and log files. You will also be able to take the GIAC Certified Intrusion Analyst (GCIA) exam after completing this course to earn a certification that validates your network monitoring and threat detection skills.
Q: What are the tools used in SEC503: Intrusion Detection In-Depth?
A: Some of the tools used in SEC503 are Wireshark, tcpdump, Scapy, Snort, Bro, SiLK, Logstash, and Kibana. These tools are open-source and free to use. You will receive access to a virtual lab environment where you can practice using these tools during the course.
Q: How can I enroll in SEC503: Intrusion Detection In-Depth?
A: You can enroll in SEC503 by visiting the SANS website and choosing the format and option that suits you best. You can take the course in person at one of the many SANS events around the world, online via SANS OnDemand or SANS vLive, or self-paced via SANS SelfStudy. The course fee varies depending on the format and option you choose.
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