i have develop a asp.net using c#
my problem is as follow...
1) The thing i wan to do is hw can i control which a user only can login at 1 side a the same time
2) After user logout they cannot click "Back" button and back to the system
3) I do not allow user straight away type the URL like www.testing.user.aspx then they can straight go into user page without login
I only know this security name like "session control", but i dun idea and concept about all of this security...can some 1 help me...thx
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