Yep it is indeed, but its hard to do it properly, not like this man is doing. Like hes not using it for a hosting company, so security will most likely suck, no good server OS knowledges, holes, fixes and dealing with bfd every 2minutes grrh. Wel good luck
I must admit that http://www.main-networks.com/ is much better than yours... I have the free starter plan and if my adsense pays up I will start paying for it.......