@Adriaan said in tmux and netcat listener Linux question:

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I find new source , but I dont know how reliable it is : https://cloudzy.com/knowledge-base/netcat-listener/, Can anyone help me?

@Adriaan said in tmux and netcat listener Linux question:

Hello all,

Recently I picked up a new NB-IoT project, and started playing around again, with Linux and some NB-IoT and CAT-M1 devices.

There are somethings I don’t understand. Maybe someone here does.

I created some listeners and parsers on a Linux machine. I configure 2 devices to connect to them. It is all quick and dirty coding, but I get the devices to connect and send data.

On linux, I listen to TCP and I redirect incoming data to a file with
with the command

netcat -k -l [port] > netcat.pcap

I start the listener with tmux so that I can detach from the session and keep the listener running headless

• It seems that one listener can only serve one device. Is that correct? I am used to Apache Webserver, that can handle as many devices (browsers) that you want. But that is HTTP. If I point 2 devices to the same port, I get only the data from 1 device. Or am I doing something wrong / thinking in the wrong direction?

• Another question. each device connects to it’s own port. For current testing, that is good enough. (remember, I run the listener headless.) Yet it also seems the listener can get ‘corrupted’ or so. I then need to restart the netcat listener. Does anyone have any experience with this?

Thank you.

Adriaan

Im looking for instructions to see how I can use Netcat to listen in on suspicious portsneed. I found nclistener in cloudzy netcat listener blog as a solution but is it essential to run it as “super-user” (sudo) or its possible with linux terminal?