Output of netstat --udp -l -v -n -p Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name udp 0 0 81.2.105.35:137 0.0.0.0:* 27386/nmbd udp 0 0 0.0.0.0:137 0.0.0.0:* 27386/nmbd udp 0 0 81.2.105.35:138 0.0.0.0:* 27386/nmbd udp 0 0 0.0.0.0:138 0.0.0.0:* 27386/nmbd udp 0 0 81.2.105.36:3478 0.0.0.0:* 2962/stund udp 0 0 81.2.105.35:3478 0.0.0.0:* 2962/stund udp 0 0 81.2.105.36:3479 0.0.0.0:* 2962/stund udp 0 0 81.2.105.35:3479 0.0.0.0:* 2962/stund udp 0 0 81.2.105.35:5060 0.0.0.0:* 27706/asterisk udp 0 0 81.2.105.35:5061 0.0.0.0:* 29056/asterisk udp 0 0 81.2.105.35:10064 0.0.0.0:* 27706/asterisk udp 0 0 81.2.105.35:10065 0.0.0.0:* 27706/asterisk udp 0 0 81.2.105.35:4569 0.0.0.0:* 29056/asterisk udp 0 0 81.2.105.35:4569 0.0.0.0:* 27706/asterisk udp 0 0 81.2.105.36:123 0.0.0.0:* 2970/ntpd udp 0 0 81.2.105.35:123 0.0.0.0:* 2970/ntpd udp 0 0 127.0.0.1:123 0.0.0.0:* 2970/ntpd udp 0 0 0.0.0.0:123 0.0.0.0:* 2970/ntpd udp6 0 0 fe80::21b:21ff:fe02:123 :::* 2970/ntpd udp6 0 0 2001:8b0:127:0:21b::123 :::* 2970/ntpd udp6 0 0 ::1:123 :::* 2970/ntpd udp6 0 0 :::123 :::* 2970/ntpd