Separate Hotspot Login from RADIUS Policy
A clean architecture for captive portal identity, authorization, accounting and billing.
ISP Operator Library
Field notes for people who run networks
Original, practical writing about subscriber operations, access networks, billing systems and the decisions behind a reliable ISP.
New and updated notesEvidence, configurations and operating decisions
Give a Small ISP Big-ISP Controls First
The operational controls a growing provider should establish before adding complexity.
Evaluate MikroTik Billing Software with Failure Tests
Choose a billing platform by testing reconciliation, isolation and recovery—not screenshots.
Design Hotspot Self-Service as a Transaction
Join OTP identity, payment, voucher issuance and RouterOS access without creating duplicate service.
Engineer a Queue Tree from a Capacity Contract
Translate a real shared-link constraint into a measurable RouterOS hierarchy.
Operate a MikroTik Security Baseline You Can Prove
A change-safe baseline for management exposure, identity, filtering, updates and recovery.
Choose a MikroTik Queue Model from the Bottleneck
A decision guide for selecting simple queues, queue trees and shaping boundaries in an ISP network.
Use Flow Data to Triage DDoS Without Guessing
A defensible workflow for detecting traffic anomalies, identifying blast radius and choosing a safe response.
Build a NOC Around Exceptions, Not Wallboard Noise
A practical operating model for turning telemetry into owned, prioritized network work.
Make OLT and ONU Inventory Agree with the Fiber Plant
An operational model for keeping OLT configuration, ONU identity, subscriber ownership and outside-plant records synchronized.