Abhijeet ApsundeStaff engineer writing about production systems, AI agents in operations, and the messy middle of large-scale platforms.https://abhijeetapsunde.com/OPNsense at Home, Part 1: The Migrationhttps://abhijeetapsunde.com/blog/opnsense-part-1-the-migration/https://abhijeetapsunde.com/blog/opnsense-part-1-the-migration/A GL.iNet running OpenWrt was fine until it was not. This is what happened when I replaced it with a proper firewall appliance, and what I learned about OPNsense in the first week.Tue, 28 Apr 2026 00:00:00 GMTOPNsense at Home, Part 2: Securing the Networkhttps://abhijeetapsunde.com/blog/opnsense-part-2-securing-the-network/https://abhijeetapsunde.com/blog/opnsense-part-2-securing-the-network/DNS over TLS with Quad9, ad blocking without AdGuard, Suricata IDS at wire speed, and TLS inspection for power users who want a safety net.Wed, 29 Apr 2026 00:00:00 GMTOPNsense at Home, Part 3: Connectivityhttps://abhijeetapsunde.com/blog/opnsense-part-3-connectivity/https://abhijeetapsunde.com/blog/opnsense-part-3-connectivity/Dual WAN failover that actually works, WireGuard VPN without the default port, and fixing bufferbloat with FQ_CoDel to get A+ latency under load.Thu, 30 Apr 2026 00:00:00 GMTOPNsense at Home, Part 4: Observabilityhttps://abhijeetapsunde.com/blog/opnsense-part-4-observability/https://abhijeetapsunde.com/blog/opnsense-part-4-observability/Syslog, NetFlow, Vector, Loki, OpenSearch, and Grafana. Building the monitoring stack that tells you what is actually happening on your network.Fri, 01 May 2026 00:00:00 GMTThe Chrome App I Walked Away From, and Came Back Tohttps://abhijeetapsunde.com/blog/the-chrome-app-i-walked-away-from-and-came-back-to/https://abhijeetapsunde.com/blog/the-chrome-app-i-walked-away-from-and-came-back-to/Eleven years after writing a Roku remote in a Chrome App sandbox, I pulled the source from the Web Store, ported it to Electron with AI assistance, and fixed the thing reviewers had been asking for the whole time.Fri, 05 Jun 2026 00:00:00 GMTThe Chrome Extension I Shipped, and Walked Away Fromhttps://abhijeetapsunde.com/blog/the-chrome-extension-i-shipped-and-walked-away-from/https://abhijeetapsunde.com/blog/the-chrome-extension-i-shipped-and-walked-away-from/In 2015 I built a Chrome extension to send video URLs to a Roku. A few thousand strangers used it. Then Google deprecated the Chrome Apps platform. Some notes on shipping to the public and letting go.Tue, 24 Mar 2026 00:00:00 GMTTwo Bugs From My First Job That I Still Think Abouthttps://abhijeetapsunde.com/blog/two-bugs-that-taught-me-to-read-the-stack/https://abhijeetapsunde.com/blog/two-bugs-that-taught-me-to-read-the-stack/In 2010 I was a junior engineer debugging a JDBC server that would not start and a build that broke overnight. Both problems had nothing to do with our code. Both taught me something I still use.Sat, 12 Sep 2020 00:00:00 GMT