netcat

nc 172.104.31.121 443
GET / HTTP 2.0

Files

download

netcat -l -p 4444 > myfile.txt

upload

nc 192.168.122.239 4444 < thefile.txt

web server

once

nc -l 4444 < index.html

persistent

nc -k -l 4444 < index.html

Generic Server

TCP on 514

Server

sudo nc -l -p 514

On the client, run the command below, press ENTER and type anything. You should be able to see what you type on the server.

Client

nc localhost 514

If all is good, edit the rsyslog configuration file as shown below;

UDP on 514

server

nc -ul 514

client

nc -u 192.168.43.154 514

Scanner

with DNS

nc -z -v 192.168.122.1 1-30

without DNS