Angela Orebaugh (CISSP, GCIA, GCFW, GCIH, GSEC, CCNA) has worked in information technology for 10 years. She is currently an associate at Booz Allen Hamilton in the Washington, DC metro area. Her focus is on perimeter defense, secure architecture design, vulnerability assessments, penetration testing, and intrusion-detection. Angela is an expert in many commercial and open source intrusion detection and analysis tools including Ethereal, Snort, Nessus, and Nmap. She is a graduate of James Madison University with a masters in computer science, and she is currently pursuing her PhD with a concentration in information security at George Mason University. Her GCFW practical received honors recognition and was used as a case study in the book Network Perimeter Security: The Definitive Guide to Firewalls, VPNs, Routers, and Network Intrusion Detection by Stephen Northcutt (ISBN: 0735712328). Angela is a researcher, writer, and speaker for SANS Institute, where she has helped to develop and revise SANS course material and also serves as the Senior Mentor Coach for the SANS Local Mentor Program.