DNS Fundamentals - SANS OSINT Series
This introductory video explains the Domain Name System (DNS), its relevance to OSINT and Information Security, and describes how DNS functions in our networks.
Learn more about David's OSINT course - SEC587 Advanced Open-Source Intelligence (OSINT) Gathering & Analysis: https://www.sans.org/u/1ljE
About David Mashburn @d_mashburn
David Mashburn is currently the IT Security Manager for a global non-profit organization in the Washington, D.C. area. He also has experience working as an IT security professional for several civilian federal agencies, and over 15 years of experience in IT. He holds a master's degree in computer science from John Hopkins University, and a B.S. from the University of Maryland at College Park. David holds multiple security-related certifications, including CISSP, GPEN, GCIH, GCIA, and CEH. He is also a member of the SANS / GIAC Advisory Board, and has previously taught courses in the Cybersecurity curriculum at the University of Maryland - University College.