nmap为一著名的网络安全扫描工具，中文版参考手册，来自官方的文档...

检查局域网硬件接入情况，扫描进行相关参数配置操作-Check the local area network access hardware, the scanning operation related configuration parameters

端口扫描基本程序-port scanning basic procedures

使用ping查询主机的程序 -The app using ping to scan machine

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

VC++开发，查看远程计算机或者设备的MAC地址。VS2003环境。-VC development, Remote View computer equipment or MAC address. VS2003 environment.

这是本人经常用的检查错误的log程序，在编写的时候将这加入到程序中能查出运行到第几步了 很好用的

利用socket实现端口扫描功能，有简单界面，多线程实现。-To achieve the use of socket port scanning function, a simple interface, multi-threaded implementation.

操作系统提供的 connect() 系统调用，用来与每一个感兴趣的目标计算机的端口进行连接。如果端口处于侦听状态，那么connect()就能成功。否则，这个端口是不能用的，即没有提供服务。这个技术的一个最大的优点是，你不需要任何权限。系统中的任何用户都有权利使用这个调用。另一个好处就是速度。如果对每个目标端口以线性的方式，使用单独的connect()调用，那么将会花费相当长的时间，你可以通过同时打开多个套接字，从而加速扫描。使用非阻塞 I/O 允许你设置一个低的时间用尽周期，同时观察多个套接字。但这种方法的缺点是很容易被发觉，并且被过滤掉。目标计算机的logs文件会显示一连串的连接和连接是出错的服务消息，并且能很快的使它关闭。 -operating system for the connect () system call, and for every one interested in the computer connect to the port. If the interception at the state port, then connect () can be successful. Otherwise, the port is not used, that is, not provide services. One of the biggest advantages is that you do not have any authority. System of any user has the right to use this call. Another advantage is speed. If each of the target port to a linear manner, the use of separate connect () call, it would take a very long time, you can open multiple socket, thus speeding up the scanning. The use of non-blocking I/O allows you to set up a low exhaustion of the time cycle, while observing

检查Linux imap服务程序弱点的Unix Shell程序 -A unix shell app which can detect the weakness of Linux imap service

高级扫描(SYN刺探)的扫描器+源代码这是图形介面下一款基于高级扫描技术(SYN刺探)的扫描器。应广大编程爱好者的要求，现在公布它的源代码。-High scan (SYN spying) of the source code scanner is graphics-based interface under the High scanning technology (SYN spying) scanners. Should the majority of programming enthusiasts, now published its source code.