This is Ubuntu 12.04 env. I have a TCP service running on port 8020 on the box: My question is: Why port 8020 is not discovered in nmap as an open port while nestat says it's listening? if i run...

I'm debugging the output of a program that transmits data via TCP. For debugging purposes i've replaced the receiving program with netcat and hexdump: netcat -l -p 1234 | hexdump -C That output...

I am trying to write an advanced whois client, so I have been experimenting with sending commands to whois servers using netcat (nc) in Arch Linux. For example, this works great: $ echo domain goo...

This question is following this one: Sockets working in openSUSE do not work in Debian? When working with sockets on my Debian system, I have to use nc -l -p port_number to simulate the server I w...

I have a C/C++ TCP client working in OpenSUSE but not in Debian. I'm using nc -l 4242 for the server. Then I connect with ./my_client 127.0.0.1 4242 on my Debian system (Sid) and it will fail when ...

My operating system is Debian Squeeze. Here's the vim version: VIM - Vi IMproved 7.2 (2008 Aug 9, compiled Jul 12 2010 02:29:33) I read a tutorial on http://kovisoft.bitbucket.org/tutorial.html a...

I was trying to debug port allocation problems in Jenkins on OS X by listening to certain ports with netcat, which led to some weird results. In a terminal on OS X 10.8.2: $ uname -rs Darwin 12...

I don't know if this is possible but I am wondering? I am doing some internal pentesting and using Scapy and Netcat, and I created a TCP packet with the payload "testing". I want to get the payloa...

I have a server set-up with netcat: nc -l 4444 -u And a client: nc 127.0.0.1 4444 -u I am using localhost because they are both on my computer, but if the client moves to another computer, is...

I am trying to use netcat to simulate a NAT traversal protocol. I have one instance that is listening for UDP packets on port 6666, as so: nc -ul 6666 In another terminal window, I am trying to ...

I am running the following command on Ubuntu: nc -l -p 5004 -v >> /home/anders/Dropbox/netcatFiles/test which includes a command to make it listen at 5004. I am sending a RTP-stream to po...

I am trying to find a good way to tail a file on a remote host. This is on an internal network of Linux machines. The requirements are: Must be well behaved (no extra process laying around, or co...

How do I switch to netcat-traditional in Ubuntu? Whenever I write netcat -h, it appears that I am running netcat-openbsd instead. I'm new to Ubuntu, so exact commands would be helpful.

I need to listen some arbitrary port inside the Linux embedded box. I chose port 6660 because it is meant for uncrypted connections anyway and since the Linux box running customized Linux OS there ...

There's already a working server service via socket, and I would like to test it via netcat. I'm using Mac OS X Lion. Currently, I'm able to connect to server via port, to send packet, but the pack...

I can get netcat to stream a video using TCP {server} cat [movie].avi | nc [client ip address] 65535 {client} nc -l -p 65535 | mplayer - i have tried using the -u command to send via UDP but ...

How can I emulate netcat -e with a version of netcat that does not have the -e option ? I need to trigger a command remotely. I can do it with netcat - without -e: #!/bin/bash netcat -l 80...

everyday I encounter a very strange phenomenon. From my university internet connection, sshing to my machine ("ssh example.com") works without any problems. From my home adsl, "ssh example.com" ...

I want to send the following via netcat: 99||0x00 (4 ASCII characters and a zero) How is this done? I'm using Windows XP. Thank you.

I have found this little script in PHP that send a simple request to twitter for update your status, I have tried this: http://pratham.name/twitter-php-script-without-curl.html, and it work. Now, I...