Net Nanny contains the standard-issue Internet blocking and filtering. It tries to ensure that no inappropriate or undesirable content is displayed on your computer. All of the products in this genre do that; Net Nanny has a few tricks up its sleeve that set it apart and make it superior to the competition.
First, Net Nanny analyzes all Internet traffic, not just websites. This means that even objectionable material in instant messaging, peer-to-peer file sharing, and other network communications will be filtered or blocked. It also uses a technology dubbed Dynamic Contextual Analysis to analyze and block sites in real time. In other words, a site like CNN.com may be fine one time and blocked another, depending on the content of the site at the time.
Another feature of Net Nanny is the ability to override a blocked site. Users can be granted the ability to override a block themselves (assuming they have been given the override password), or they can be granted the ability to request an override. Basically, if a person visits a site that is blocked, but they feel they should have access to it, they can click Request Override and an email will be sent to the email address in the Net Nanny administration settings.
One other defining feature of Net Nanny is the ability to review and manage the configuration remotely from across the Internet. Whether you are at the office or around the world on vacation, you can access Net Nanny via the Internet and review reports or make changes as needed.