• Limit concurrent access tracks duplicate logins using the same userid.  This feature can block subsequent requests, log, or even automatically disable the account should abuse be obvious.  Concurrent access has multiple thresholds for actions and the user can receive a custom html error or be redirected to a specific page if concurrent access is detected.
• Limit kilobytes per user tracks the total file size of requests for a given user and will prevent further access to the site if the size exceeds your setting for a given period of time.  This feature can prevent content scrapers from downloading your entire site for distribution or offline browsing.
• Limit hits per user functions in the same way as limit kilobytes except the data being tracked and limited on is each hit or request for a web page / file or image.
• Limit sequential logins prevents an user from logging in more than the quota you set per period of time.
• Prevent password cracking tracks failed login attempts by a given system.  If the number exceeds the quota then the users IP will be banned and they will no longer have access to the username and password prompt.  This is especially useful in preventing dictionary attacks where an automated program is used to send 1000's of login attempts to try and guess common passwords.

iisPROTECTquota is especially suited for paid membership or revenue generating sites to curtail password sharing, offline browsing, site downloading, and compromised accounts.