Would a single proxy server be a good solution for connecting Gray’s employees to the Internet in this circumstance?

To meet Gray’s requirements, you will need answers to the following questions:

• Which OS or OSs should Gray use on the servers? What is the rationale for your choice? Would this system and the expected requirements warrant the use of a trusted OS or would commercial systems be sufficient? Justify your decision with examples and a specific comparison between a trusted OS and a commercial OS.
• Is the OS the primary piece of software responsible for the security of the overall system? Explain your answer and give examples to support your conclusion. How does this affect confidentiality, integrity, and availability for the system? Which of these factors is most influenced by the OS?
• Would a single proxy server be a good solution for connecting Gray’s employees to the Internet in this circumstance? What benefits and challenges would this introduce? How would this affect the attack surface of the system? Assume roughly twenty-five employees as a starting point for the organization; how would growth of the organization affect the use of the proxy server? How well does this type of solution scale with traffic volume?