School of Computer Science CMP3750M Cyber Security In-Class Test

This document provides a detailed solution to an in-class cyber security test (CMP3750M). The test covers key concepts including identifying and interpreting log files, specifically those used for authentication, and analyzing Apache web server logs. The solution details commands and effects of setting file permissions for users and groups within a cybercops VM, including the use of 'mkdir' and 'chmod' commands. Furthermore, the assignment addresses the creation of Access Control Lists (ACLs) to manage network traffic, such as blocking web and FTP requests and ICMP traffic. Lastly, the solution includes frequency analysis and decryption of a substitution cipher, applying knowledge of letter frequencies and common word patterns to decipher a message related to identity theft.