I've always liked the approach that says «anybody using the same home network», but I may be alone on this one. (goodereader.com)
To do this make sure your PC / Mac and PS4 are on the same home network, then go to Settings > Remote Play Connection Settings, select Add Device and follow the on - screen instructions. (techradar.com)
The next step involves connecting the Steam Link to the same home network that your computer is running off of. (techradar.com)