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Blog | Mohammad Mahdi Afshar | Senior Software Developer

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Oct 24, 2026DevOps

Keeping a MikroTik address-list of Iranian prefixes current

Routing domestic traffic directly and everything else through a tunnel needs an accurate list of domestic prefixes. iran-ipset builds one from RIPE data, merges it into RouterOS safely, and publishes it weekly.4 min read

Oct 24, 2026DevOps

dnsd: a DNS policy resolver you drive through an API

dnsd sits between clients and upstream resolvers, applies ordered block/rewrite/forward rules, binds outbound queries to the right interface, and is managed entirely through an HTTP API and a terminal UI.4 min read

Oct 24, 2026DevOps

A VPN control plane that only speaks HTTP to its nodes

networkingd manages a fleet of VPN gateways through desired state and a reconciling node agent. Its central rule: the control plane never touches a daemon's internals — every data-plane component is a separate service with an HTTP API.4 min read

Oct 24, 2026DevOps

Applying Linux network policy idempotently with nftables

netpolicyd turns desired routes, firewall, NAT and traffic-control objects into commands. Making that apply safe to repeat took an atomic nftables replace, sets instead of rule explosions, and a prune that knows the difference between empty and unknown.5 min read

Feb 13, 2026DevOps

Kubernetes: A Beginner's Guide

A simple guide to install Kubernetes on your VM. Learn how to set up a complete Kubernetes cluster from scratch with step-by-step instructions.6 min read