SEC503: Intrusion Detection In-Depth
Excellent Instruction!
Erik Brown, TASCThe concepts learned in 503 helped me bridge a gap in knowledge of what we need to better protect our organization.
Greg Thys, Mary Greeley Med Ctr
Reports of prominent organizations being hacked and suffering irreparable reputational damage have become all too common. How can you prevent your company from becoming the next victim of a major cyber attack?
SEC503: Intrusion Detection In-Depth delivers the technical knowledge, insight, and hands-on training you need to defend your network with confidence. You will learn about the underlying theory of TCP/IP and the most used application protocols, such as HTTP, so that you can intelligently examine network traffic for signs of an intrusion. You will get plenty of practice learning to configure and master different open-source tools like tcpdump, Wireshark, Snort, Bro, and many more. Daily hands-on exercises suitable for all experience levels reinforce the course book material so that you can transfer knowledge to execution. Basic exercises include assistive hints while advanced options provide a more challenging experience for students who may already know the material or who have quickly mastered new material. In addition, most exercises include an "extra credit" stumper question intended to challenge even the most advanced student.
Industry expert Mike Poor has created a VMware distribution, Packetrix, specifically for this course. As the name implies, Packetrix contains many of the tricks of the trade to perform packet and traffic analysis. It is supplemented with demonstration "pcaps," which are files that contain network traffic. This allows students to follow along on their laptops with the class material and demonstrations. The pcaps also provide a good library of network traffic to use when reviewing the material, especially for certification.
SEC503 is most appropriate for students who are or will become intrusion detection/prevention or security analysts, although others may benefit from the course as well. Students range all the way from seasoned analysts to novices with some TCP/IP background, but to keep pace with the class students are expected to have at least a basic working knowledge of TCP/IP (see www.sans.org//media/security-training/tcpip_quiz.php ). Please note that the Packetrix VMware used in class is a Linux distribution, so we strongly recommend that you spend some time getting familiar with a Linux environment that uses the command line for entry, along with learning some of the core Unix commands, before coming to class.
Preserving the security of your site in today's threat environment is more challenging than ever before. The security landscape is continually changing from what was once only perimeter protection to protecting exposed and mobile systems that are almost always connected and often vulnerable. Security-savvy employees who can help detect and prevent intrusions are therefore in great demand. Our goal in SEC503: Intrusion Detection In-Depth is to acquaint you with the core knowledge, tools, and techniques to defend your networks. The training will prepare you to put your new skills and knowledge to work immediately upon returning to a live environment.
Course Syllabus and Course Contents
Fundamentals of Traffic Analysis
- TCP/IP concepts
- Using tcpdump and Wireshark
- Link layer, IPv4, IPv6, and fragmentation
- Transport layers TCP, UDP, and ICMP
Application Protocols
- HTTP
- SMTP
- Microsoft protocols
- DNS
- IDS evasions
- Examination or real-world traffic
Hands-On Snort and Bro Usage
- Running, installing, configuring, and customizing Snort
- Writing Snort rules
- Running, installing, configuring, and customizing Bro
- Writing Bro scripts and signatures, and raising Bro notices
Network Traffic Forensics and Monitoring
- Analyst toolkit
- Using the SiLK open-source network flow tool
- Network forensics
- Using logs for correlation
- OSSEC open-source HIDS/SIM
You Will Learn:
- How to analyze traffic traversing your site to avoid becoming another "Hacked!" headline
- How to place, customize, and tune your IDS/IPS for maximum detection
- Hands-on detection, analysis, and network forensic investigation with a variety of open-source tools
- TCP/IP and common application protocols to gain insight about your network traffic, enabling you to distinguish normal from abnormal traffic
- The benefits of using signature-based, flow, and hybrid traffic analysis frameworks to augment detection
| Course Contents | Instructors | Schedule |
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| SEC503.1: Fundamentals of Traffic Analysis: Part I | Jonathan Ham |
Mon Feb 15th, 2016 9:00 AM - 5:00 PM |
OverviewDay 1 provides a refresher or introduction, depending on your background, to TCP/IP. It covers the essential foundations such as the TCP/IP communication model, theory of bits, bytes, binary and hexadecimal, an introduction to Wireshark, the IP layer, and both IPv4 and IPv6 and packet fragmentation in both. We describe the layers and analyze traffic not just in theory and function, but from the perspective of an attacker and defender. All traffic is discussed and displayed using the two open-source tools Wireshark and tcpdump. Students can follow along with the instructor viewing the sample traffic capture files supplied. Six hands-on exercises, one after each major topic, offer you the opportunity to reinforce what you just learned. CPE/CMU Credits: 6 TopicsConcepts of TCP/IP
Introduction to Wireshark
Network Access/Link Layer: Layer 2
IP Layer: Layer 3
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| SEC503.2: Fundamentals of Traffic Analysis: Part II | Jonathan Ham |
Tue Feb 16th, 2016 9:00 AM - 5:00 PM |
OverviewDay 2 continues where the previous day ended in understanding TCP/IP. Two essential tools - Wireshark and tcpdump - are explored to give you the skills to analyze your own traffic. The focus of these tools on Day 2 is filtering traffic of interest in Wireshark using display filters and in tcpdump using Berkeley Packet Filters. We proceed with our exploration of the TCP/IP layers covering TCP, UDP, and ICMP. Once again, we describe the layers and analyze traffic not just in theory and function, but from the perspective of an attacker and defender. All traffic is discussed and displayed using the two-open source tools, Wireshark and tcpdump. Students can follow along with the instructor viewing the sample capture files supplied. Four hands-on exercises, one after each major topic, offer you the opportunity to reinforce what you just learned. Note: This course is available to SEC503 participants only. CPE/CMU Credits: 6 TopicsWireshark Display Filters
Writing tcpdump Filters
TCP
UDP
ICMP
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| SEC503.3: Application Protocols and Traffic Analysis | Jonathan Ham |
Wed Feb 17th, 2016 9:00 AM - 5:00 PM |
OverviewDay 3 culminates the examination of TCP/IP with an exploration of the application protocol layer. The concentration is on some of the most widely used, and sometimes vulnerable, crucial application protocols: HTTP, SMTP, DNS, and Microsoft communications. Our focus is on traffic analysis, a key skill in intrusion detection. IDS/IPS evasions are the bane of the analyst, so the theory and possible implications of evasions at different protocol layers are examined. The day concludes with an analysis of some real-world traffic captures. Once again, we describe the applications not just in theory and function, but from the perspective of an attacker and defender. All traffic is discussed and displayed using the two-open source tools, Wireshark and tcpdump. Students can follow along with the instructor viewing the sample traffic capture files supplied. Four hands-on exercises, one after each major topic, offer you the opportunity to reinforce what you just learned. Note: This course is available to SEC503 participants only. CPE/CMU Credits: 6 TopicsAdvanced Wireshark
Detection Methods for Application Protocols
Microsoft Protocols
HTTP
SMTP
DNS
IDS/IPS Evasion Theory
Real-World Traffic Analysis
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| SEC503.4: Open-Source IDS: Snort and Bro | Jonathan Ham |
Thu Feb 18th, 2016 9:00 AM - 5:00 PM |
OverviewThe fundamental knowledge gained from the first three days provides a fluid progression into one of the most popular days SEC503. Snort and Bro are widely deployed open-source IDS/IPS solutions that have been industry standards for over a decade. We take a unique approach of teaching both open-source IDS solutions by presenting them in their operational life-cycle phases from planning to updating. This will offer you a broader view of what is entailed for the production operation of each of the tools. This is more than just a step-by-step discussion of install, configure, and run the tools. This approach provides a recipe for a successful deliberated deployment, not just a haphazard "download and install the code and hope for the best." The introduction to these two tools gives you the requisite theory and hands-on skills to deploy them at your job. You will understand the differences and strengths of each tool, and how they can provide benefits to your network security and inspection of noteworthy events. There are three hands-on exercises: the mechanics of running Snort; writing a Snort rule, and and learning Bro's capabilities, such using its scripting language, writing signatures, and raising a notice to report about a given event. Note: This course is available to Security 503 participants only. CPE/CMU Credits: 6 TopicsOperational Lifecycle of Open-Source IDS
Introduction
Snort
Bro
Comparing Snort and Bro to Analyze Same Traffic
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| SEC503.5: Network Traffic Forensics and Monitoring | Jonathan Ham |
Fri Feb 19th, 2016 9:00 AM - 5:00 PM |
OverviewOn the penultimate day, you'll become familiar with other tools in the "analyst toolkit" to enhance your analytical skills and give you alternative perspectives of traffic. The open-source network flow tool SiLK is introduced. It offers the capability to summarize network flows to assist in anomaly detection and retrospective analysis, especially at sites where the volume is so prohibitively large that full packet captures cannot be retained for very long, if at all. A very powerful and useful packet crafting tool called Scapy is introduced. It can help you craft packets to perform a variety of testing, such as generating traffic to test a new Snort rule. The topic of network forensics is examined to show you how to investigate an incident using multiple approaches, including log analysis. Finally, you can see how your forensic data can be correlated and analyzed by open-source tools, with a concentration on the OSSEC that acts as a host-based IDS and Security Information and Event Manager (SIEM). Five sets of hands-on exercises, one after each major topic, offer you the opportunity to reinforce what you just learned. Note: This course is available to SEC503 participants only. CPE/CMU Credits: 6 TopicsAnalyst Toolkit
SiLK
Packet Crafting
Command and Control (C2)
Network Forensics
Network Architecture for Monitoring
Correlation of Indicators
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| SEC503.6: IDS Challenge | Jonathan Ham |
Sat Feb 20th, 2016 9:00 AM - 5:00 PM |
OverviewThe week culminates with a fun hands-on challenge where you find and analyze traffic to a vulnerable honeynet host using many of the same tools you mastered during the week. Students can work alone or in groups with or without workbook guidance. This is a great way to end the week because it reinforces what you've learned by challenging you to think analytically, gives you a sense of accomplishment, and strengthens your confidence to employ what you've learned in in a real-world environment. Note: This course is available to SEC503 participants only. CPE/CMU Credits: 6 |
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| Additional Information | ||
| Laptop Required | ||
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IMPORTANT - BRING YOUR OWN LAPTOP You will need to run a Linux VMware image supplied at the training event on your laptop for the hands-on exercises that will be performed in class. Some familiarity and comfort with Linux and entering commands via the command line will facilitate your experience with the hands-on exercises. VMware VMware Player or VMware Workstation is required for the class. If you plan to use a Macintosh laptop, please make sure you bring VMware Fusion. You must have either the free VMware Player 3 or later or the commercial VMware Workstation 6 or later installed on your system prior to coming to class. You can download VMware Player for free at https://my.vmware.com/web/vmware/downloads. Alternatively, if you want a more flexible and configurable tool, you can download a free 30-day trial copy of VMware Workstation from. https://my.vmware.com/web/vmware/downloads. VMware will send you a time-limited license number for VMware Workstation if you register for the trial at their Web site. No license number is required for VMware Player. If you are a Macintosh user, you must have VMware Fusion 3 or later installed on your system prior to coming to class. It is available for a free 30-day trial copy at https://my.vmware.com/web/vmware/downloads. Mandatory Laptop Hardware Requirements
Do not bring a laptop with sensitive data stored on it. SANS is not responsible if your laptop is stolen or compromised. By bringing the right equipment and preparing in advance, you can maximize what you will learn and have a lot of fun. If you have additional questions about the laptop specifications, please contact laptop_prep@sans.org. |
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| What You Will Receive | ||
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| You Will Be Able To | ||
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| Hands-on Training | ||
The hands-on training in SEC503 is intended to be both approachable and challenging for beginners and seasoned veterans. There are two different approaches for each exercise. The first contains guidance and hints for those with less experience, and the second contains no guidance and is directed toward those with more experience. In addition, an optional "Extra Credit" question is available for each exercise for advanced students who want a particularly challenging brain teaser. A sampling of hands-on exercises includes the following:
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| Press & Reviews | ||
"This course provides a good basis of knowledge and presents important tools which will be at the core of any intrusion analysis." - Thomas Kelly, DIA "This course is valuable for anyone interested in IDS. The instructor's knowledge and willingness to help you understand the material is unlike any other training I have been to. Great course and instructor." - Dannie Arnold, U.S. Army "Course was designed around real-world intrusions and is highly needed for network security administrators and/or analysts."- Hector Araiza, U.S. Air Force |
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| What To Take Next? | ||
Courses that lead in to SEC503: Courses that are prerequisites for SEC503: Courses that are good follow-ups to SEC503: |
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