I have been searching for a free open source solution to protect my web application against prying hackers, malicious screen scrapers, illegitimate crawlers, rampant bots and abusive API users. Besides being free and open source, the minimum requirement is that the solution can identify rogue user IP addresses and blacklist them if necessary. Preferably, the solution can also protect (somewhat) against denial-of-service (DOS) attack and implement API rate limiting.
This is the scenario that you run Windows as your host operating system and Ubuntu in a VirtualBox, and that you want to access a specific Windows folder from Ubuntu.
This tutorial will help you reset your Ubuntu user account password, regardless of what reason you have for resetting it.