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"Such internal firewalls -- known as distributed firewalls -- are the next line of defense against hackers who breach traditional firewalls by exploiting open ports and e-mail servers. Network managers tend to see distributed firewalls as added firepower against . . . ... "Such internal firewalls -- known as distributed firewalls -- are the next line of defense against hackers who breach traditional firewalls by exploiting open ports and e-mail servers. Network managers tend to see distributed firewalls as added firepower against hackers."The link for this article located at Federal Computer Week is no longer available.