The course consist of 3 consecutive  parts...starting with the Ubuntu Server, Postgresql & finally the SSL connection.

1- Install Ubuntu Server, configure NTP, NSCD , firewall & networking 'netplan' file .

2- Install customized source code package of Postgresql  then encrypt the entire cluster of databases with Data-At-Rest encryption technique.

3- Create all necessary certificates (ROOT,Intermediate,Trust-Chain,Server ,Client) to get a full  secure  SSL client-server connection from both sides based on (based on postgresql manual).