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The Internet is an all-pervasive entity in today��쁲 world of computing. To cope with the ��쐗ild��� Internet, several security mechanisms were developed, among them access controls, authentication schemes, and firewalls, one of the most secure methods.
However, firewall means different things to different people. Consider the fable from India about the blind men and the elephant.
Each blind man touched a different part of the elephant and came up with a totally different description,
The blind man who touched the elephant`s legs described it as being similar to a tree.
Another blind man touched the tail and decided an elephant was like a twig.
Yet another grabbed the trunk and concluded an elephant was like a snake.
<諛⑺솕踰�>
�씤�꽣�꽬��� �삤�뒛�궇 �꽭怨� 而댄벂�꽣 紐⑤뱺 遺꾩빞�뿉 �뒪硫� �뱾�뼱�엳�떎. �솴�웾�븳 �씤�꽣�꽬�뿉 ���泥섑븯湲� �쐞�븯�뿬 留롮�� �씠�뱾�쓽 �젒洹쇱젣�뼱 �궗�씠�뿉 怨좊룄濡� 諛쒖쟾�맂 紐뉖챺 蹂댁븞 硫뷀궎�땲利섏씠 諛쒖쟾�릺�뼱�졇 �엳�떎. �씤利� �꽕怨꾩�� 諛⑺솕踰쎌씠 媛��옣 �븞�쟾�븳 硫붿냼�뱶以� �븯�굹�씠�떎.
�븯吏�留� 諛⑺솕踰쎌�� �궗�엺�뱾�쓣 援щ퀎�븯�뒗 寃껋쓣 �쓽誘명븳�떎. �씤�뵒�븘濡쒕���꽣 �쟾�빐 �궡�젮�삤�뒗 �옣�떂怨� 肄붾겮由� �슦�솕瑜� 怨좎같�빐蹂댁옄.
媛� �옣���(�깮�왂)
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