Cloudflare's free tier allows 1,000 KV writes a day; a monitor that writes state every minute spends 1,440 — over quota by breakfast. The write-only-the-news design that lets Foghorn idle at zero writes, why alert delivery belongs inside the state machine, and where the math honestly runs out.
One box catches an attacker the hard way; the rest of your fleet relearns it from scratch. Swarm fixes that with a self-hosted reputation network — a Cloudflare Worker and D1 hub you own, your boxes sharing only their confirmed permanent bans, every local safety gate still in force. The network effect, without a global pool or a third-party phone-home.
Firewall your origin to Cloudflare's ranges and certificate renewals quietly die — and the intuitive /.well-known/ firewall carve-out can never save them, because a packet-content match can't admit a new TCP connection. A production post-mortem, and the two postures that actually work.
Combine decks and the videos vanish, freeze, or stop playing? Why copy-paste, PowerPoint's Reuse Slides, and online mergers drop embedded media — and how to merge so every clip keeps playing in the finished file.
One person used PowerPoint, another Keynote, a third Google Slides — and it all has to become one presentation. How to combine mixed formats across Mac and PC without rebuilding slides by hand or homogenizing every design.
Free online mergers need a full copy of your slides on their servers — a real problem for NDA, client, or board material. Why that's a risk, and how to combine decks entirely on your own computer with no account and no upload.
A short walkthrough of your first merge, plus fixes for the things people ask about most: fonts that change, a clip that won't play, very large files, and reading .ppt or .key.
fail2ban doesn't work the way you expect behind Cloudflare — and a wrong rule can take your sites offline. A practical, plane-by-plane guide: see the real IP, block proxied attackers at Cloudflare, block direct-to-origin ones at CSF, and decide which is which.
If someone finds your server's real IP, they can skip Cloudflare entirely and hit your origin on port 443 with a valid Host header — past your WAF, rate limits, and bot management. How the origin bypass works, how to detect it, and how to lock it down.