So long as you have VPN setup on your Mac, accessing the server should be fairly easy.
First, click on the VPN icon ($20 prize to anyone who can effectively describe what this icon) and choose "Connect MB VPN."
Once connected, go to the Finder. Click the "Go" menu and select "Connect to Server."
Enter the address of the server, which is "afp://10.0.16.20" and click connect.
Login with your server username and password and enjoy your sweet remote freedom.
As always, if you have trouble, shoot us a note at support@bionic-cat.com.