A Multi - Stage Filtering Scheme for Internet Access Control Ghassan

ةیتوبكنعلا ةكبشلا و ينورتكللإا ثدحتلا و دیربلا لثم ةددعتملا اھتامدخب تینرتنلإا ةكبش ربتعت لا تامولعملا لدابت و لقنل ةیلاعف رثكلأا ةقیرط . يتلا تایوتحملاب ةمحدزم تدغ ةكبشلا هذھ نأ لاإ امداصت تببس " احضاو " امداصت لب اندیلاقت و انتاداع عم " نوناقلا عم . ةلیلق و ةئیذبلا عقاوملا ةیرصنعلا و ةیھاركلا ىلع عجشت يتلا عقاوملا و ةیحابلإا تایوتحملا تاذ ماشتحلاا لاإ تسیل يھ لافطلأا مھنمض نم و تینرتنلإا ةكبش يمدختسم ةفاكل ةرفوتملا داوملا نم ةلثملأا ضعب . و لبس نع ثحبلاب دیدعلا أدب دقف نیمدختسملا ةیامحل ةمراصلا نیناوقلا و تاعیرشتلا رفوت نیحل انامأ رثكأ اھلعجل تینرتنلإا تایوتحم ةیقنت و ةبقارمل " ةمداقلا لایجلأل . عتسیو ةمدختسملا بیلاسلأا نم ددع مییقت و ةسارد للاخ نم ةیامحلا قرط ضعب ثحبلا اذھ ضر اجذومن ثحبلا مدقی امك ،تینرتنلإا ةكبش تایوتحم ةیقنتل " ةددعتم ةیقنتلا تایجمرب ءانبل ةلاعف ةقیرطب ةئیدرلا عقاوملا ىلا لوصولا عنم عیطتست يتلا و لحارملا . The Information superhighway with its tools such as electronic mail, bulletin boards, chat rooms and the World Wide Web has become the ultimate source of communication and endless information exchange. This superhighway however, has been jammed with material causing serious clashes with our traditions, moral standards, and even the law. Pornography, indecency, crimes, stalking, and dangerous material are only few examples of some of the contents accessible freely to every user including our children. Until the existing legal laws sort out the confusion regarding the Internet and its contents, users are resorting to a variety of methods and tools to monitor and to filter the contents of the Internet hoping to make it a safer place for their future generations. This paper presents a survey and an evaluation of some of the existing methods and tools used for Internet filtering. A proposal for a filtering program is being presented. This program overcomes the limitations of filtering techniques by its hierarchical organization which combines URL, word matching, and labeling approaches.