Using Forms Authentication Across Applications
By default, Forms authentication is application relative. In other words, if you log in to one application, you aren’t logged in to any other application—even when the other application is located on the same web server.
This creates problems in two situations. First, you don’t want to require the employees of your company to log in multiple times as they move between different applications hosted by your company. An employee should log in once and use any application provided by your company automatically.
Second, if you host a web farm, you don’t want to force a user to log in whenever a request is served by a different web server. From the perspective of a user, a web farm should seem just like ...
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