Enterprise-level monitoring series

The SNMP
the COMMAND
REMOTE Script
RRDTool
Cacti (PHP)
presentation tool
of time series data
Nagios
ON -> Off
the SNMP
the Simple Network Management Protocol
the SNMP V1
Three Communities in SNMPv1:
the Read-only
the Read the Write-
Trap
the SNMP V2
the SNMP V3
MIB
Management Information Base

HIDS NIPS
SNMP UDP 161