netstat -anp |grep 443 tcp 0 0 0.0.0.0:8443 0.0.0.0:* LISTEN 27227/httpsd tcp 0 0 :::443 :::* LISTEN 28577/httpd unix 3 [ ] STREAM CONNECTED 36678443 19953/mysqld /var/lib/mysql/mysql.sock [root@cuscus ~]# strace -p 28577 Process 28577 attached - interrupt to quit select(0, NULL, NULL, NULL, {0, 932000}) = 0 (Timeout) waitpid(-1, 0xbffd10b8, WNOHANG|WSTOPPED) = 0 select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout) waitpid(-1, 0xbffd10b8, WNOHANG|WSTOPPED) = 0 select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout) waitpid(-1, 0xbffd10b8, WNOHANG|WSTOPPED) = 0 select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout) waitpid(-1, 0xbffd10b8, WNOHANG|WSTOPPED) = 0 select(0, NULL, NULL, NULL, {1, 0}) = 0 (Timeout) waitpid(-1, 0xbffd10b8, WNOHANG|WSTOPPED) = 0 select(0, NULL, NULL, NULL, {1, 0} netstat -anp |grep udp udp 0 0 0.0.0.0:648 0.0.0.0:* 3440/rpc.statd udp 0 0 0.0.0.0:651 0.0.0.0:* 3440/rpc.statd udp 0 0 203.88.119.182:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.181:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.180:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.179:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.178:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.177:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.176:53 0.0.0.0:* 23651/named udp 0 0 203.88.114.59:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.187:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.186:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.185:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.184:53 0.0.0.0:* 23651/named udp 0 0 203.88.119.183:53 0.0.0.0:* 23651/named udp 0 0 203.88.114.58:53 0.0.0.0:* 23651/named udp 0 0 203.88.114.57:53 0.0.0.0:* 23651/named udp 0 0 127.0.0.1:53 0.0.0.0:* 23651/named udp 0 0 0.0.0.0:47597 0.0.0.0:* 23651/named udp 0 0 0.0.0.0:111 0.0.0.0:* 3421/portmap udp 0 0 :::47598 :::* 23651/named ps aux |grep 3440 29 3440 0.0 0.0 2312 724 ? Ss Mar06 0:00 rpc.statd root 4803 0.0 0.0 3748 668 pts/1 S+ 12:18 0:00 grep 3440 [root@cuscus ~]# ps aux |grep rpc rpc 3421 0.0 0.0 2536 624 ? Ss Mar06 0:00 portmap 29 3440 0.0 0.0 2312 724 ? Ss Mar06 0:00 rpc.statd root 3470 0.0 0.0 5780 468 ? Ss Mar06 0:00 rpc.idmapd root 6221 0.0 0.0 4148 668 pts/1 S+ 12:20 0:00 grep rpc