扫描是否使用了QPOP/SCO POP邮件程序

traceroute的tcp实现-traceroute tcp realizes

webdav，是一款很旧的软件了！-webdav, is a very old software!

tftp 服务器和客户端 软件，功能强大！-tftp server and client software, powerful!

利用ICMP请求来判断操作系统类型的程序- Using ICMP requested judges the operating system type the procedure

查询wingate的程序 -Wingate scaner

XPortScan v2.0，多线程端口安全扫描工具，内包含Windows/Linux 两版本，附源代码-XPortScan v2.0, multithreaded port security scanning tools, which includes Windows/Linux version 2, with source code

DNS上主机查询 -Machine query on DNS

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

局域网内IP扫描,扫描局域网内的计算机IP地址，请根据实际修改里面相应的地方。-LAN IP scanning computer LAN IP address, Please actual changes inside the corresponding areas.

半连接扫描的源程序-Semi-connected source scan