Wikipedia has a nice entry with examples on Netcat.
Unzip the file and move the resulting folder to a location where you can access it, for example.
Open a command line window and move to the location where nc111nt is located by using the command cd.
To run Netcat you need to type.
To view a list of available parameters type.
C:UsersLuisDownloadsnc111nt>nc.exe -help [v1.11 NT www.vulnwatch.org/netcat/] connect to somewhere: nc [-options] hostname port[s] [ports] ... listen for inbound: nc -l -p port [options] [hostname] [port] options: -d detach from console, background mode -e prog inbound program to exec [dangerous!!] -g gateway source-routing hop point[s], up to 8 -G num source-routing pointer: 4, 8, 12, ... -h this cruft -i secs delay interval for lines sent, ports scanned -l listen mode, for inbound connects -L listen harder, re-listen on socket close -n numeric-only IP addresses, no DNS -o file hex dump of traffic -p port local port number -r randomize local and remote ports -s addr local source address -t answer TELNET negotiation -u UDP mode -v verbose [use twice to be more verbose] -w secs timeout for connects and final net reads -z zero-I/O mode [used for scanning] port numbers can be individual or ranges: m-n [inclusive]
Real Worl Example:
Netcat is possible of many things, but my favorite use is to transfer disk images created with dd over the network. As an example I am going to image a 4GB CF card over a gigabit network(no compression). The concept of sender and receiver will be used.
System where the image will be stored:
nc –l –p 7000 | dd of=/dev/hda
dd if=/dev/hda | nc 192.168.1.10 4000
Not many things are this easy to run and use, but the nice thing about Netcat is that it works regardless of the operating system being used. Like said I mostly use it to transfer the images I create with the help of dd (Parted Magic) over to my Windows server.