i) Based on the port number 64428, identify the port type and explain its primary role.
ii) Give one real-world example (both service/application name and port number are required) of a registered port and explain what this term means.
iii) Outline a situation in which port knocking might be used and how it works.
iv) Based on the following scenario and explain three hardening principles that SellBay should consider, with appropriate examples for each.
SellBay, a small online marketplace have just setup a single physical Windows server that handles Active Directory, DNS, DHCP, IIS hosting multiple web apps, FTP and SSH services. The sysadmin is unfamiliar with Windows, so as a precaution, has left most settings as default. They have also granted full administrative permissions for each service, to all of the management team, so that any necessary changes can be easily made.
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