Thanks for the answer. I have setup receiver and I have enabled this.
Now my node tries to setup a TCP connection by sending SYN. Now the splunk server sends SYN ACK and my node sends ACK to this.
Then immediately, the splunk server sends FIN -ACK to this.
Pls help me in solving this.
The way I see it, it is not refused - there is simply no data exchanged before the connection is closed, see this diagram. Why that is I have no idea, sorry - but the connection is there and it works as it should.