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

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I want to send a file to a TCP server, keep the TCP connection open, wait (couple of seconds) for the response, and send the response to stdout. I don't want the connection to be (half) closed ...
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I'm trying to learn how to interact with message buses under Linux, and doing so with shell commands that doesn't involve utilities packaged under dbus-*. For this instance, I want to understand how ...
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I'm using a fresh minimal Ubuntu server 24.04.1 LTS install. I run these commands as root to set up networking and do some experiments: If you have seen this post, it's the same setup but with the ip ...
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On a Ubuntu system I have the netcat(-openbsd) package installed, the one that, when run with no parameters, prints: This is nc from the netcat-openbsd package. An alternative nc is available in the ...
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How to check if a port is blocked with socat? How to check with IPv6? I heard a saying that machines behind NAT can still be directly connected via IPv6, is that true? Anyway, say I have a machine ...
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I have this nginx custom configuration: server { listen 8080; server_name subdomain.domain.my.id; location /vless-ws { # Consistent with the path of V2Ray configuration if ($...
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I'm using netcat and stty to get terminal (tty) access, but I'm not able to do so as the CTRL+Z action on the netcat session is giving me suspended session instead of stopped and then I'm not able to ...
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BusyBox v1.36.1 (2023-07-17 18:29:09 UTC) multi-call binary. I run minimal nc server like: nc -lkp 12345 I can connect to it once nc localhost 12345. After ctr-C, the next attempt will fail. however ...
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I am using netcat to get a series of points which I would like to plot with gnuplot. However, I am having trouble passing the data to gnuplot without writing it to a file first. In the simplest case, ...
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I used dd to create a sample empty file with 1MB, edited the sample file, created a MD5 hash of the file, started a listener on the examiner machine, piped the output off to nc and compared the hashes....
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This to my understanding records mono in wav format for 300 seconds to a named pipe called "mic_rec" rec arecord -D hw:4,0 -d 300 -f cd -t wav -c 1 mic_rec And this sends whatever it finds ...
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I'm working through an introductory cybersec challenge that requires me to upload a word and brute force a 4 digit code to a port. I put the combinations in a file, and tried to use netcat to upload ...
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Context : I want to test UDP port with nc command What happens : nc command return nothing on output and 0 when i put echo $? Which command : nc -vzu <ip> <port> echo $? What is the ...
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I want to use netcat as a TCP-server that reads data from a named pipe. For that I did the following: Step 1. Created a pipe and the server that uses it as a source mkfifo /tmp/all.pipe nc -k -l 8080 &...
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nc -l -u 6666 on the receiving machine gets no messages from netconsole. tested by doing "echo test > /dev/kmsg" i am able to connect with netcat by doing "nc -u 10.0.0.192 6666"...
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Currently, I am working on a project where I use telnet to netcat to send an email message within my university. I am trying to make the process automated but my script can't seem to enter in any ...
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I am using netcat to run a file over a network like so nc -lvnp 1111 -e file on the client machine, the connection is empty and I only get an output after I enter an input. How to show the output of ...
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I have 2 Ubuntu boxes one of them acting as an Attack platform (we will call it AP), the other as an already compromised server (we will call it S1). I have this rule sudo iptables -t nat -I ...
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I'm trying to send a binary packet to a local process, via netcat (nc), like this: nc -w 1 -u localhost 10000 < my_binary_packet.bin The output is: read(net): Connection refused Anyone know what'...
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I have this script on a Linux machine that loops through a .txt file to see if connection is successful or not. When I give the IP directly is works. However, when I pass the variable it says: nc: ...
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I am trying to use netcat to echo some data to a custom board I have. The board is connected using a 10G Ethernet connection. I can see that the link is up but when I try using netcat I am not getting ...
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I am using netcat to connect to a server over TCP and continuously pipe the data received to file. nc 10.0.2.2 3456 > file.data When running this from terminal or a script it stays connected I want ...
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I have a situation where we are trying to get data from one network to another - specifically access to a private maven repo on a different network. Network 1 contains a maven repo. And network is ...
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I have access to just *nix systems. Either NetBSD and/or bare Linux-based OS. So my question comes from the fact that ADB is not widely available on all platforms, if so is very hard to install or ...
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I'm using macOS with gnu netcat. I want to understand how can I broadcast message using netcat. I have a netcat listening on 4555 netcat -l -p 4555 192.168.0.101 but as I attempt to send a broadcast ...
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