Cryptographic Tunneling and the OSI Model

Project description
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.
Provide input on the type of cryptographic tunneling protocols (e.g., L2TP, IPSEC, SSL, etc.) which 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).

Scenario
Sunshine Machine Works, who recently expanded its infrastructure, now needs to ensure that any authorized employee can access the intranet. Sales people and management staff frequently travel to remote locations, and often require access to documents stored on the intranet file server.

Role
You are the IT Services manager for Sunshine Machine Works. You are to assess the information presented and provide a response to management on how remote access may be handled for Sunshine Machine Works.

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