listen to UDP data on local port with netcat
Solution 1:
To quote the nc
man page:
-l
Used to specify that nc should listen for an incoming connection rather than initiate a connection to a remote host. It is an error to use this option in conjunction with the -p, -s, or -z options. Additionally, any timeouts specified with the -w option are ignored.
The key here is that -p
cannot be combined with the -l
flag. When using the -l
flag, any ports specified in the positional arguments are used. So instead, you could use the following:
netcat -ul 2115
Solution 2:
-p
is be wrong. This will work on Redhat and Debian based distros:
nc -u -l 2115
Solution 3:
For some reason, Andrew's solution didn't work for me. With further research, I learned that we need to add -p flag when working locally. So the following command worked for me.
nc -ulp 2115