Youhaveafirewallfiltercontainingtwotermsappliedinaninbounddirectiononacustomerinterface.Youwouldlikethisfiltertoprotectyournetworkfromaspoofeddenialofserviceattack.Whatmatchcriterionshouldbeusedinthefirsttermofthefilter？（）
A.SourceTCPport
B.SourceIPaddress
C.DestinationTCPport
D.DestinationIPaddress
参考答案：B
