NethServer is an Open Source powerful and secured Linux distribution, build on top of CentOS 6.6, designed for small offices and medium enterprises. Build-in with a large number of modules which can be simply installed through its web interface, NethServer can turn your box into a Mail server, FTP server, Web server, Web Filter, Firewall, VPN server, File Cloud server, Windows File Sharing server or Email Groupware server based on SOGo in no time just by hitting a few clicks.