For subscription information, click here . One approach is client-based software products which, when loaded onto an individual computer, check specific Web site requests against a database of Web sites deemed inappropriate and disallow the retrieval of the content. There are several drawbacks to client-based products. First, the users must load software onto the individual computer. It is immediately out of date because new objectionable sites appear on the Internet daily.
Updates are usually available, but continually updating is troublesome to the user.
They are often easy to bypass because they are loaded on the same computer they're protecting. The approach we chose to use is server-based filtering which resides at the network level, so that each computer does not have to have software loaded. This is the most practical approach, user automatically receive the most updated list of blocked sites daily. For subscription information, click here . It is far and away the most effective filtering solution available today.