利用winsock，实现简单的ping功能

vc++编的多线程扫描端口-vc series of the multi-threaded scanning ports

查U盘是否有毒，驻留内存，自动检测。插入U盘发现有毒，U盘就不能使用-check whether the toxic site, the presence of memory, automatic detection. Insert disk discovery of toxic U, U disk can not be used

一个简单的端口扫描程序，定义了几个在网络应用中非常有用的类，如CHyperLink。-a simple port scanning procedures, the definition of several applications in the network very useful categories, If CHyperLink.

icmp包定制程序-icmp package has custom-made the procedure

外网IP变动自动发邮件通知，运行在局域网内都计算机上,当外网地址变动时自动发送邮件通知 -Outside the network IP changes automatically mail a notice in the LAN are running on your computer, when outside the network address changes automatically send mail notification

SNMPing is a tool that scans a TCP/IP network for devices running an SNMPdaemon on port 161 (or a user specified port).

C语言写的简单的端口扫描程序，内附源码，仅供学习-C language to write a simple port scanner, enclosing the source, for study

遍历给定目录中的所有文件（包括子目录中的文件），以实现文件查找功能。支持通配符查找。-given directory traversal of all documents (including subdirectories document), to achieve the document search function. Search support wildcards.

PSMFirewall防火墙源代码 -PSMFirewall firewall source code PSMFirewall firewall source code

扫描器scanner源代码-source code scanners scanner