Further Investigation Questions 1. LINUX SECURITY a) What does the sudo command do and why is it needed? b) Explain basic Unix file permissions in detail, including what gets shown using the ls -1 command and what the chmod command does. 2. HOME COMPUTER SECURITY a) How might you secure a home computer and its associated network? List three key points and justify them. 3. ENTERPRISE SECURITY a) Overview the features of a firewall as might be used in a large organisation like QUT. 4. REFERENCES Provide a list references to all material you have used