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Mason Harris, CCIE #5916 and co-author of CCNA Security 210-260 Complete Video Course, provides a streamlined introduction to DHCP snooping, a barrier to denial-of-service and man-in-the-middle attacks on organizational networks.
This step in preparing for the CCNA Routing and Switching exam covers STP and its variations — standards that allow for redundant switched networks without worrying about switching loops.
In this video Keith Barker and Scott Morris discuss the importance of security as part of the design, deployment and operations of information system today.
This chapter lists some common threats against network infrastructures and goes on to discuss the Cisco Network Foundation Protection Framework, Control Plane Security, Management Plane Security, and Data Plane Security.