OT - suggestions for setting up a shared web development environment

Hi List; I used to have a firewall with the astaro firewall on it which allowed PPTP VPN access to my local network. The astaro box died and I'm having difficulty getting astaro up on another box. I wonder if there is a better or more of a best practice method open source style that would allow me to have a distributed web development team and have a test box where certian end users could access the test system. I'm open to any hardware/software solution that is simple and secure... Thanks in advance for your thoughts... /Kevin