cippfIpFilterTCPEstablished 1.3.6.1.4.1.9.9.278.1.1.3.1.19

This filter if 'true' specifies that for TCP protocol, in an established connection, a match occurs if the TCP datagram has the ACK,FIN,PSH,RST,SYN or URG control bits set. If 'false' a match will occur for any TCP datagram.