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Netcat (often abbreviated to nc) is a computer networking service for reading from and writing to network connections using TCP or UDP. Netcat is designed to be a dependable back-end that can be used directly or easily driven by other programs and scripts. At the same time, it is a feature-rich network debugging and investigation tool, since it can produce almost any kind of connection its user could need and has a number of built-in capabilities. Its list of features includes port scanning, transferring files, and port listening, and it can be used as a backdoor. == Features == The original netcat's features include:〔(【引用サイトリンク】 Netcat 1.10 )〕 * Outbound or inbound connections, TCP or UDP, to or from any ports * Full DNS forward/reverse checking, with appropriate warnings * Ability to use any local source port * Ability to use any locally configured network source address * Built-in port-scanning capabilities, with randomization * Built-in loose source-routing capability * Can read command line arguments from standard input * Slow-send mode, one line every N seconds * Hex dump of transmitted and received data * Optional ability to let another program service establish connections * Optional telnet-options responder * Featured tunneling mode which permits user-defined tunneling, e.g., UDP or TCP, with the possibility of specifying all network parameters (source port/interface, listening port/interface, and the remote host allowed to connect to the tunnel). Rewrites like GNU's and OpenBSD's support additional features. For example, OpenBSD's nc supports TLS. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Netcat」の詳細全文を読む スポンサード リンク
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