Re: [CentOS] testing a udp socket with netcat

On Wed, Mar 14, 2012 at 8:25 AM, Arif Hossain freefall1986@gmail.com wrote:

i've this udp daemon which is waiting for an incoming udp datagram. now i want test this daemon for random garbage to test how it behaves. My udp daemon is running because its shows on netstat. problem is if i issue following command for putting udp datagram : $nc -uvvz <host> <port>

it does not output any thing. i have straced the udp daemon. which does not returns from recv() call.

my goal is to put arbitrary data on the udp socket by netcat. i do not have any experience regarding netcat so i'm asking if anyone can help me out with this.

Do you have iptables running? The default config would probably block your udp traffic.