A.tcp.srcport ==80&&tcp.length eq 128B.tcp.srcport ==80&&tcp.len ne 128C.tcp.port ==80&&tcp.length ==128D.tcp.dstport ==80&&tcp.length ==128
A.ftpB.httpC.oicqD.icmp
A.>=等价于geB.==等价于eqC.< >等价于neD.< =等价于le