There is one KnowledgeBase that discusses this issue briefly, over at
Datasocket Security. The Datasocket Manager we provide can help administrators to allow/disallow access to the server by IP address, so security per computer is possible. However, if the concern is because of machines with multiple users then Datasockets may not be the way to proceed. Datasockets can however work with firewalls through specified ports, and this may/may not be an issue for your company as well.
Elaine R.
Applications Engineer
National Instruments
http://www.ni.com/ask