Cryptographic Tunneling

Question
You Decide
Cryptographic Tunneling and the OSI Model
Write a paper consisting of 500-1,000 words (double-spaced) on the security effects of cryptographic tunneling based on an understanding of the OSI (Open Systems Interconnect) model (Review the OSI Simulation in the Week 3 Lecture).
Provide input on the type of cryptographic tunneling protocols (e.g., L2TP, IPSEC, SSL, etc.) that may be used, the layer(s) of the OSI at which each operates, and also recommend how they may be implemented. Cryptographic tunneling is inherent in building any common virtual private network (VPN).
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