NetCat Part-1

Hi Hackerz, 

I(CrosS) just thought to write a detailed tutorial on NetCat.
All Data and Information provided in this tutorial is written by me But information and data has been compiled
and taken from google ,with my examples . This tutorial is specially for BCA members. ))

NetCat(nc)

NetCat, also known as Swiss Army knife" is a command line tool.
Orignally it was created by Hobbit in 1995. NT version was created by weld Pond. Later developed by the Team Stake for Unix and windows.
It's free open source.

It allows the manupulation of sockets, in simple we can say that it's used to open network connections without
programming anything, i.e Interesting :P

It allows Multiple Functions including -> 

* Scannning ports ( TCP / UDP )
* IP spoofing
* Shell / ReverseShell
* Tunneling
* DNS forward/reverse checking, with appropriate warnings
* Ability to use any local source port.
* Hex dump of transmitted and recieved data.
* Let another program to establish connections.
* Telnet-Options responder.

Netcat is a computer networking service for reading from and writing network connections using TCP or UDP 

NetCat is a famous command line utility. Which allows to do just about anything you want with sockets.

Sockets

A socket is a connection between two computers. 
To identify a socket, it takes 3 things. 
IPs of the 2-connected computers. 
2-ports of computers that are connected. 
-The protocol used... 

Netcat is designed to be a dependable “back-end” device that can be used candidly or easily driven by other programs and scripts.
At the same time, it is a feature-rich network debugging and investigation tool, since it can produce almost any kind of correlation
you would need and has a number of built-in capabilities.

NetCat has prooved to be an extremely versatile tool on Unix Platforms. So why should NT remain poor cousin of unix when
it comes to TCP/IP testing and exploration. Many NT Admin keep a unix version of an NT Vulnerability exploit.

Download Netcat UNIX Version

Download Netcat Windows Version

This was Introduction to NetCat.