[root@server1 ~]# netstat -n | grep SYN
tcp 0 0 62.68.215.58:80 78.166.134.0:3179 SYN_RECV
tcp 0 0 62.68.215.58:80 88.226.26.165:17790 SYN_RECV
tcp 0 0 62.68.215.58:80 78.166.134.0:3174 SYN_RECV
tcp 0 0 62.68.215.58:80 78.160.107.143:49289 SYN_RECV
tcp 0 1 62.68.215.58:36496 69.46.226.163:25 SYN_SENT
[root@server1 ~]#