Hello,   I have NXLOG installed, and use UDP to receive and sent the servers logs. However, when I run the netstat command I found that there are packets on error and other received through unknown ports. See the lines shown :   UDP:  123234944 packets received 223432 packets to unknown port received. 523455 packet receive errors 2111 packets sent Why does it happen? I didn't configure any other port on my NXLOG and the firewall rules only accept 514 port to communicate with my NXLOG server. How could I verify what is this? Is it normal?   Thank you very much for your help and answer   Cordially,   Ana