Best network port scanners for Linux
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.
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