NetFlow, sFlow and IPFIX: A Practical Guide to Traffic Flow Analysis
Understand who is using your bandwidth, where it goes and why — and how flow data supports capacity, security and peering decisions.
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Network Security Articles
Practical notes on networks, security, data and telecom infrastructure.
Finding Botnet-Infected Devices on Your Network
How flow analysis, DNS logs and threat intelligence reveal compromised devices — and how ISPs can help subscribers clean up.
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DNS Security: Protecting the Phonebook of Your Network
DNS hijacking, tunnelling and amplification are common attack paths. Here is how to harden resolvers and authoritative DNS.
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DDoS Attacks Explained: Types, Impact and How to Defend
Volumetric, protocol and application-layer DDoS attacks — and the detection and mitigation strategies that keep services online.
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Email Security Basics: Anti-Spam, SPF, DKIM and DMARC Explained
Keep phishing out of inboxes and stop attackers spoofing your domain with gateway filtering and email authentication.
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Handling IP Abuse Reports: A Guide for ISPs and Hosting Providers
How to receive, investigate and resolve abuse complaints about your IP space — and protect your reputation in the process.
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IPAM: Why Spreadsheets Stop Working for IP Address Management
IP conflicts, lost subnets and IPv6 planning — the case for proper IP Address Management and how to adopt it.
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Choosing and Deploying a Network Management System (NMS)
What to look for in an NMS, how to roll it out, and how to avoid the alert fatigue that makes monitoring useless.
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Network Intelligence: Turning Telemetry Into Decisions
How analysing network data reveals usage patterns, threats and capacity needs that dashboards alone miss.
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