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Network and System Security by John R. Vacca

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Introduction

Organizations today are linking their systems across enterprise-wide networks and virtual private networks (VPNs), as well as increasing their exposure to customers, competitors, browsers and hackers on the Internet.

According to industry analysts, NAC is now the “Holy Grail” of network security, but NAC isn’t the sole contributor to the booming security market. According to industry analysts, hackers are inventing new ways to attack corporate networks, and vendors are just as quickly devising ways to protect against them. Those innovations will continue to push the security market higher.

First, there’s a real need for enterprise-class security for handheld devices, especially wireless client devices, such as Wi-Fi VoIP handsets. ...

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