How to restart udp port 514 when it is not listening?

[pacifikn]

Greetings!!

How to restart udp port 514 that is configured on public ip x.x.x.x 

all the syslogs sender are configured to send the data to x.x.x.x 514 , where this public IP(x.x.x.x) is the splunk log server collector.

BUT now , I can't recive logs into splunk log collector, and if I test this public IP by pinging is replying good, but port is not listening when I test with telnet it is not connecting,

how May I solve this???? I need your help? 

how to do to put again this service to listening? so that even if I do telnet can respond as usual?

Thank you in advance!

[richgalloway]

Ping can tell you if a server is up, but doesn't tell if a port is open or not.

Telnet cannot test UDP connections.  Try nc, instead.

nc -u x.x.x.x 514

Use netstat to verify something is listening on that port.

netstat -ln | grep 514

 If nothing appears then Splunk is not listening on 514.  Double-check the settings at Settings->Data inputs->UDP