Nonsense Networking: Tech Talk #8

Ever feel like getting simple data from your network is way harder than it should be? You're not alone. With so many devices, the amount of data can be overwhelming, making it tough to see what's actually happening.

In this stream, we're breaking down the common frustrations with network monitoring.

We'll cover:
The SNMP Problem: We'll start with why the "standard" method, SNMP, is often a pain. We'll look at the challenge of finding the right MIBs and OIDs just to get tools like Telegraf or Prometheus to work.

Better Ways to Get Metrics: The good news is, there are better ways! We'll show you more direct methods for getting stats, like using specific exporters for UniFi and Omada gear, and discuss Cisco's newer gNMI protocol.

Making Use of Logs: We'll also cover logs, starting with the classic Syslog. We'll discuss how to collect them and how your firewall—whether it's nftables on Linux or pf on pfSense/OPNsense—can be a great source of information.

What is Flow Data? We'll explain why Netflow and sFlow act more like a record of past events (a log) than a real-time stat (a metric), and why they can be tricky to set up and interpret, especially with NAT.

Helpful Alternatives: If Netflow isn't the answer, what is? We'll introduce you to powerful tools like Suricata and Zeek, explaining how Suricata can help with security monitoring (IDS/IPS) and how Zeek can give you incredibly detailed information about your traffic.

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