How can I optimize Ubuntu 16.04 performance

[Saganak Yagisli]

I have AWS Lightsail server and installed Ubuntu 16.04. It has 512 MB memory and 20 GB disk. How can I optimize operating system?

I just using OpenVPN Access Server on this server. I want to turn off all unnecessary things. Server must run just OpenVPN Access Server and what OpenVPN Access Server needs.

[Rico]

Hmm...you realize this is the pfSense forum?

-Rico