Techniques to Secure Classic ASP App

Hello,

Concerning a classic ASP web application, what are some things I can do to improve security?  I am looking for techniques I can use at the APPLICATION level (not server techniques).  In this case I am locked into using CLASSIC ASP.

Things I have done:
* Using SSL for all pages.
* Application password protected.  If more than three attempts user redirected to another site.  All pages test if there is a valid login.
* For form processing pages test if form page source came from IIS server.
* Encrypt any files stored on IIS server that the application uses.

Thanks for your advice,

Michael
michael4606Asked:
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NorushCommented:
Also make sure you are protected against sql injection attacks.

Here's a good article about protecting yourself from SQL Injection attacks:

http://www.4guysfromrolla.com/webtech/061902-1.shtml
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Loganathan NatarajanLAMP DeveloperCommented:
one more,
Proper Input Validation with all browser optimization to be done, if you have done any validation , can be verified with all the browsers .... for important forms, server side validation can be done for the inputs
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devshbCommented:
Along similar lines to norush's answer, as an extra fall-through, download and occasionally run the free injection scanner from here (which is classic asp) -
http://www.sqlinjectionscanner.com/
(and have a look at its resources section; lots of other useful injection/xss notes there)

That way if there are any gaps in your logic which get exploited you should be able to spot any effected data at the push of a button.
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