When you launch the web GUI, there is no prompt to authenticate. How do I enable this? ATM, any user who happens to type in http://servername on the LAN will be able to see the LANSweeper web interface.
I would disable the "Anonymous Access" and enable Integrated Windows authentication on the IIS. In addition, I would edit the ASP.NET configuration > Authorization tab and only allow certain group access, such as IT, etc..