The TCP/IP Monitoring MIB
The TCP-MIB MIB keeps track of data connection information and contains the very useful tcpActiveOpens and tcpCurrEstab objects. Figure details the most important objects in TCP-MIB.
Figure Important Objects in the TCP-MIB MIB
TCP-MIB Object Variable
Measures the number of completed TCP connections.
Measures the number of TCP connections in the established state.
Total number of TCP segments with bad checksum errors.