I am writing a support call logging app. Clients have a user name and password to log in over the web, and this is stored in a database, so I use forms authentication. The support and development staff need to look at these calls and it seems to make sense to use Windows authentication, so that I don't have to maintain the password lists etc.
How can I mix the two? Or how can I detect that someone is on the LAN, and authenticate them automatically?