From 1982 or 1983 up until 2006 we were a Novell shop, we utilized only Novell servers in our internal network. From May 2006 through August 2008 we phased out the Novell servers and transitioned entirely to Microsoft. A retired top NASA security expert assisted us with the transition and I will never forget his comment to me, "Greg, I just don't see any way a snake can get in this building."