Bandwidth & Traffic
Find what's eating the link: bandwidth hogs, top talkers, interface saturation, and reading NetFlow without a full-time analyst.
- 01
Finding the Bandwidth Hogs
From 'the link is slow' to a named user/host/app in an afternoon, without touching packet contents. Start at the boundary (graph the WAN interface via SNMP with LibreNMS/PRTG to confirm saturation), then drop to flows (NetFlow export → ranked top talkers by host/app), and decide whether to shape, schedule or leave it. This is the article shown in the mockup.
- 02
The Best Bandwidth Monitoring Tools
A practical tour of the real options for bandwidth/traffic monitoring (ntopng, PRTG, LibreNMS, Zabbix, ElastiFlow), matched to office size and data source. What each is genuinely good at; no star ratings, no 'get deal'. Rework of the old 'Best Bandwidth Monitoring Softwares' post.
- 03
Reading NetFlow Without an Analyst
NetFlow/IPFIX demystified for a busy admin: what a flow record is (and isn't), how to export it from a router/firewall, and how a collector (ElastiFlow, ntopng) turns it into ranked top-talkers and per-app usage — no payload, no packet-wrangling.
- 04
Top Talkers & Interface Saturation
The two numbers that matter most day-to-day: which endpoints dominate the link (top talkers) and how close an interface is to its ceiling (saturation). How to read them, why averages hide spikes, and when saturation is the real problem vs a noisy neighbour.