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NewsFactor: Best Network Port Scanners for Linux

Jul 23, 2003, 10:00 (1 Talkback[s])
(Other stories by Vincent Ryan)

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"Port scanning is a prosaic area of network security. For the network administrator, it is the equivalent of knocking on all the doors of a house to see if anyone is around. In an age when any open holes in a network are dangerous, however, a simple port scanner can be an invaluable tool.

"But there is no reason to run out and purchase a piece of scanning software. There are numerous Linux-based scanning products available for free, and two of them do as good a job as any commercial product. Moreover, because these open-source products are continually updated--by white-hat and black-hat hackers alike--it also can be argued that they have a better handle on all the ways network ports can be exploited.

"Though port scanning is a popular tool of attackers on the prowl for services and applications they can penetrate, it also can be used to defend networks by finding those holes first..."

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