Network Monitoring – ITFROMZERO

Configuring Traffic Mirroring on Linux with tc-mirred: Copy Packets to IDS/IPS Without Disrupting Service

By admin June 24, 2026

Traffic Mirroring with tc-mirred lets you copy all packets to a passive IDS/IPS device without disrupting production traffic. This guide walks through configuring both ingress and egress mirroring step by step, along with tips for selective traffic filtering and automating the setup with a systemd service.

Network

NetFlow and IPFIX: Monitoring Network Bandwidth with nfdump and nfsen on Linux

By admin May 26, 2026

Identify the IP consuming 90% of your network bandwidth in just 30 seconds. A detailed guide on deploying nfdump and nfsen for NetFlow/IPFIX monitoring on Linux based on real-world experience.

Monitoring

Zabbix & SNMP: Pro Tips for Monitoring Switches/Routers (No More Network “Blind Spots”)

By admin May 20, 2026

Don't let your network be a 'black box'. Here is a detailed guide on using Zabbix to monitor switches and routers via SNMP, helping you control traffic, CPU, and port errors in real-time.

Network

Monitor Linux Networks with ntopng: No More ‘Looking for a Needle in a Haystack’ During Lag

By admin May 15, 2026

Forget dry netstat commands. This guide helps you install ntopng on Linux for visual network monitoring, catching every IP causing bandwidth congestion.

Security

Stop “Sneaky” Connections on Linux with OpenSnitch: A Powerful Application-Level Firewall

By admin May 14, 2026

Don't let apps leak your data without permission. Learn how to use OpenSnitch to control every network connection on Linux and protect your privacy.