Great Walls of Fire

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Widely touted as the ultimate security for Internet and intranet systems, firewalls are rapidly becoming the must-buy item for many users. But what are they? How can they be used? Who are the market leaders and the best of breed? Nick Farrell investigates

With tales of hackers, cyber-terrorists and virus strikes on the increase, Internet/intranet customers are feeling fairly nervous. Some are terrified about the prospect of linking up with a public ...

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