If renting an Ubuntu 16.04 VPS server is in your plans, be sure to consider which security measures will help ensure a worthy level of security for your project. By listening to the experts at AvaHost and their recommendations, you can conclude that there are 5 measures that are most effective in maintaining server environment security. These include the option of two-factor authentication (for example, using the pam-google-authenticator module), restricting access via SSH (providing maximum access rights and comfortably implementing server settings), network-level protection, shared memory protection, and preventing IP spoofing.
The aforementioned recommendations for securing Ubuntu Server are just the beginning of the path to ensuring the protection of servers against the most common types of hacker attacks. However, this is an important first step in securing your system.