{TAIL ~ The system} 16 wherein the predetermined information includes a source IP address, a destination IP address, {HEAD ~ a layer 3 protocol}, a layer 4 source port and a layer 4 destination port of a connection 
{ TAIL ~ The system } 16 wherein the predetermined information includes a source IP address , a destination IP address , { HEAD ~ a layer 3 protocol } , a layer 4 source port and a layer 4 destination port of a connection
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH