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STALLINGS, WILLIAM. (2003). NETWORK SECURITY ESSENTIALS: APPLICATIONS AND STANDARDS (SECOND EDITION). NEW YORK: PRENTICE HALL.

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STALLINGS, WILLIAM. NETWORK SECURITY ESSENTIALS: APPLICATIONS AND STANDARDS. SECOND EDITION NEW YORK: PRENTICE HALL, 2003. Text.

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STALLINGS, WILLIAM. NETWORK SECURITY ESSENTIALS: APPLICATIONS AND STANDARDS. SECOND EDITION NEW YORK: PRENTICE HALL, 2003. Text.

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STALLINGS, WILLIAM. NETWORK SECURITY ESSENTIALS: APPLICATIONS AND STANDARDS. SECOND EDITION NEW YORK: PRENTICE HALL, 2003. Print.