famous nmap network scanning tool windows version of the hospital code scanning...

DNS上主机查询 -Machine query on DNS

通过发送自己构造的数据包来检测端口是否可以连接 -Detecting the port whether can be connected through sending the your own packets

编写漏洞扫描器探查远程服务器上可能存在的具有安全隐患的文件是否存在，它的socket建立过程和上面 的端口扫描器是相同的，所不同的是漏洞扫描器通常使用80端口，然后对这个端口发送一个GET文件的请求，服务器接收到请求会返回文件内容，如果文件不存 在则返回一个错误提示，通过接收返回内容可以判断文件是否存在。发送和接收数据需要使用函数send()和recv()，另外对流中存在的字符串进行判断 需要使用函数strstr()，这除了需要具备socket函数库的知识以外，还需要一些有关string函数库的知识。-The preparation of vulnerability scanners detect a remote server that may exist with the security risks of the file exists, and its socket to establish the process and above the port scanner is the same, the difference is that vulnerability scanners typically use port 80, and then on the port send a GET request for the document, the server receives the request will return the contents of the documents, if the file does not exist then return an error message, through the receiver can determine whether to return to the contents of the file exists. Send and receive data need to use the function send () and recv (), exists in another string convection judge need to use the function strstr (), which apart from the need to have the socket lib

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内存占用的大小直接影响程序的运行，对于一些内存占用很多的程序，需要实时检测可用内存，以调整设置，本程序就能实现这种功能-Memory footprint size of a direct impact on the operation of the procedure, for some memory footprint a lot of procedures, the need for real-time detection of memory can be used to adjust the settings, the program will be able to realize this function

本程序可根据用户的设置对http服务器进行监控，以检测其是否关闭，源码-This procedure can be based on the user

网络上其他地方看到的源代码，不错对学网络很有帮助哦-network seen elsewhere on the source code, it is true for school network helpful oh

用winsock编写的端口扫描器，支持多线程和两种扫描方式SYN和ping，附有详细文档.-with winsock prepared by the port scanners, support for multithreading and two SYN scanning and ping, with detailed documentation.

snmp扫描程序 -snmp scanner

这是TCP_UDP编程实现的C S模式聊天软件,可以从服务器进行广播,客户端只能与服务器通信.传输模式可以是TCP或UDP,是TCP_UDP学习的不错选择-Programming C S chat software, it is broadcast from the server, the client and server communication only. Transfer mode can be TCP or UDP, TCP_UDP learning is a good choice