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Mohamed Khamis
Asked: 2014-04-05 00:37:45 +0800 CST

Sending a simple TCP message using Netcat

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I am trying to use netcat to send a simple message over TCP, e.g. I want to send the digit 1.

So I understood that I write the following in the terminal, after installing netcat

netcat [ip-address] [port]

But how do I specify the message to be sent? i.e. where to I write "1" ?

netcat

2 Answers

  1. Create file something.txt, content of file is 1

    netcat [ip-address] [port] <something.txt

    At destination you must have something to listen to this.

    or

    Server:

    netcat -l -p [port]

    to listen to the connection

    Client:

    netcat [server-ip-address] [port]

    After connection is establish on cilent simple type 1 and hit enter

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  2. I use:

    echo text | netcat host port

    So you would just need to run this:

    echo 1 | netcat localhost 12345
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