Which Kind of Monitoring?

About this interactive

The lesson's monitoring: - **ICMP (ping) monitoring:** pings each device on a schedule and alerts when one stops answering. - **Service monitoring:** asks a service such as HTTP or FTP to do its job: is the page there, does it say "healthy", how fast does it answer? Cloud monitors test from around the world. - **SNMP:** a manager pulls readings from devices, or devices send them: CPU, memory, disk, interface counters. - **NetFlow:** a router or firewall reports the flows crossing it (source, destination, port, volume), for performance and security. - **Syslog and log aggregation:** devices send their logs to a syslog server, and an aggregator such as Splunk lets you search them all and see a cascade of events in order. Packet capture and analytics, also in the lesson, are not bins: packet capture is the protocol analyzer's job, and analytics measures web visitors' experience rather than the network.

What you'll learn

Choose the kind of monitoring that meets a need: ICMP (ping) monitoring, service monitoring, SNMP, NetFlow, or syslog and log aggregation
Explain what each kind sees: whether a device answers, whether a service works and how fast, a device's CPU, memory and disks, who talks to whom across a link, or the events every device logged

Aligned to

CompTIA Network+

3.2 Given a scenario, use network monitoring technologies.

Cisco CCST Networking

5.2 Perform a packet capture with Wireshark and save it to a file

Cisco CCNA

4.4 Explain the function of SNMP in network operations

Key terms

Simple Network Management Protocol: A protocol used to monitor and manage network devices such as routers, switches, and servers.
NetFlow: NetFlow is a Cisco network protocol that collects IP traffic flow metadata including source, destination, protocol, and byte counts, widely used in security operations for traffic analysis, anomaly detection, and incident investigation.
Log Aggregation: The process of collecting and centralizing log data from multiple systems into a single location for unified analysis and troubleshooting.
Syslog: Syslog is a standard protocol for forwarding log messages from network devices and systems to a centralized log server, forming the foundation of security log collection pipelines and SIEM data ingestion.
Internet Control Message Protocol: A network layer protocol used to send error messages and operational information about network conditions.

Topics

Network Monitoring Snmp Netflow Syslog Log Aggregation Service Monitoring Interactive Categorize

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