Login with flexviewer

Hello all,

My flex viewer and application is running on a local server and a number of 20 computers is using the application simultaneously.
My content is on an ArcGIS server and he is secured.
Every tint I am opening the application I need to enter user name and password.

I am wondering, is there a way to avoid the need to enter the username and password every time?

Thank you all,
Roi algavish.