The services are adaptable to the customer s needs and community standards regarding filtering. The following is a partial list of the features and options that schools receive when they decide to use filtering. It is important to note that this is the array of options that schools have asked to see and which make the filtering service attractive and functional for them. Choices include pornography, drug use, graphic violence, and bomb-making. Customers can also invoke exceptions for educational sites and choose whether or not to block free e-mail, chat or simply allow moderated chat.
Customers can further customize the filters by adding or subtracting sites from the block lists.
Different filtering schemes can be set up for different times of day. Over 4.5 million web pages are contained in the block-site categories. All sites that are blocked are reviewed by N2H2 staff before being added to the block lists. Updates to the block lists occur daily, automatically. Technical support and system monitoring is available 24 hours a day.