The Parental control module can restrict acces to any specific sites or web-pages, as well as to all known sites containing information on certain subjects (such as sites about drugs or weapons, sites of paid on-line games, etc.). A list of specific websites to be blocked is set up by the user; both individual addresses and keywords found in URLs can be specified in this block list. Blocking websites by subject is carried out automatically using the lists, updated regularly by Doctor Web.