Appendix C. Probes 147• Swap Free — The percent of swap memory currently free.Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-tored system to execute this probe.Field ValueTimeout* 15Warning Minimum Swap FreeCritical Minimum Swap FreeTable C-26. Linux::Swap Usage settingsC.5.13. Linux::TCP Connections by StateThe Linux::TCP Connections by State probe identifies the total number of TCP connections, as wellas the quantity of each in the following states:• TIME_WAIT — The socket is waiting after close for remote shutdown transmission so it mayhandle packets still in the network.• CLOSE_WAIT — The remote side has been shut down and is now waiting for the socket to close.• FIN_WAIT — The socket is closed, and the connection is now shutting down.• ESTABLISHED — The socket has a connection established.• SYN_RCVD — The connection request has been received from the network.Requirements — The Red Hat Network Monitoring Daemon (rhnmd) must be running on the moni-tored system to execute this probe.Field ValueLocal IP address filter pattern listLocal port number filterRemote IP address filter pattern listRemote port number filterTimeout* 15Critical Maximum Total ConnectionsWarning Maximum Total ConnectionsCritical Maximum TIME_WAIT ConnectionsWarning Maximum TIME_WAIT ConnectionsCritical Maximum CLOSE_WAIT ConnectionsWarning Maximum CLOSE_WAIT ConnectionsCritical Maximum FIN_WAIT ConnectionsWarning Maximum FIN_WAIT ConnectionsCritical Maximum ESTABLISHED Connections
