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网络扫描就是通过对要扫描的网络主机发送特定的数据包,根据返回的数据包来判断其系统的端口及相关的服务有没有开启。我们可以把扫描看做一种行为,目的是收集被扫描系统或网络的信息。扫描器不仅是黑客攻击网络的工具,也是网络安全管理员维护网络安全的重要工具。主要从网络扫描的类型和常用工具做一简单分析。
Network scanning is through the network host to be scanned to send a specific packet, according to the returned packet to determine the system’s ports and related services are not open. We can think of scanning as an act to collect information about the system being scanned or the network. Scanners are not only tools that hacker attacks on the network, but also network security administrators to maintain network security an important tool. Mainly from the network scanning type and commonly used tools to do a simple analysis.