ZTL is a great infrastructure product that will handle all your server side needs for a business. you can setup your own mail server, web server, domain controller etc all easily using a clean web based software. it makes Linux usable by even novice users.
you can go ahead and try it at www.trustix.org
We intend to sell it. But at the moment its free as its going thru its beta cycle. But if you want a free license, I know people at Comodo and can get you a free license if you like
Is this product for sale for servers? Do you have a server 2008 version? Can I run ZTL on a separate computer and filter all network copper and WIFI through it?