September 2018
Intermediate to advanced
304 pages
6h 35m
English
Content preview from Network Scanning Cookbook
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Port specification and scan order
By default, if the range of ports to be scanned is not stipulated, Nmap scans the top 1,000 most commonly used ports, that is, ports that are found open most often across networks. These scan options allow the user to specify which ports are to be scanned and the order in which they are to be scanned.
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