prepare between 400 to 700 words for each of the discussion problems

problem 1: Discuss the reasons and demo of how NC and TFTP services are considering as the best remote support tools during a network attack and specially in Linux and how to minimise the impact on Linux systemsin terms of authentication and authorization?

problem 2: Regardless of SSH or OpenSSH Server version, name and list 4 vulnerable of SSH or OpenSSH server services and provide solutions to avoid and/or mitigate the security risk when SSH server is served as a remote service in Linux systems?

problem 3: In joomla provide three solutions for each to protect database and web server from your installed CMS to increase the chance of survival of the service from inside/outside attacks. (For instance how to avoid hacking, form deleting SQL database, backup, mechanism of updated joomla)?