端口重定向 ，fpipe， 666 ，穿墙术
英文文档：
FPipe v2.1 - TCP/UDP port redirector.
Copyright 2000 (c) by Foundstone, Inc.
http://www.foundstone.com
FPipe [-hvu?] [-lrs <port>] [-i IP] IP
-?/-h - shows this help text
-c - maximum allowed simultaneous TCP connections. Default is 32
-i - listening interface IP address
-l - listening port number
-r - remote port number
-s - outbound source port number
-u - UDP mode
-v - verbose mode
Example:
fpipe -l 53 -s 53 -r 80 192.168.1.101
This would set the program to listen for connections on port 53 and
when a local connection is detected a further connection will be
made to port 80 of the remote machine at 192.168.1.101 with the
source port for that outbound connection being set to 53 also.
Data sent to and from the connected machines will be passed through.
fpipe -l 1430 -s 1431 -r 1433 192.168.0.4
这句命令的意思是： 所有连接到本地1430端口的信息， 通过本地的1431端口， 转发到IP为192.168.0.4的1433端口
使用这个命令可以实现：某些不允许远程连接的端口， 使用fpipe把本地不存在限制的端口重定向到本地存在远程访问限制的端口上
作者： NONO
开源博客：http://www.github.com/sqqihao
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