Can I hide my content from being discovered by search engines? Can I lock images from being saved/downloaded?

I am a designer and am making a new site to house my portfolio. I need to ensure that the only way someone could find/view my content is if I have provided them with my URL and password to enter the site. The company I work for restricts what work can be shared with the public, even if it wasn't considered confidential information. 

I am also concerned with folks downloading or pulling the images off of my site. Are there ways to prevent that?

Any help is appreciated!