Mindless Bit Spew rss feed About Ry How not to hand winch Mindless Bit Spew As reference material Let's Encrypt on an HP LaserJet M553, renewed from a Proxmox container Oct 9, 2026 HP LaserJet Enterprise printers ship with a self-signed certificate and no ACME client. Mine now serves a Let’s Encrypt certificate on its admin page and on IPPS/AirPrint, and a small Alpine container on Proxmox renews it every two months without me touching the printer. Here is how. The short version: One setting in the printer’s web interface, Use for Network Identity , covers both HTTPS on 443 and ipps://…/ipp/print . The certificate is issued elsewhere with a DNS-01 challenge. I run certbot in an LXC container on Proxmox. The key must be RSA. The firmware rejects EC private keys outright. Upload is a pas
Mindless Bit Spew rss feed About Ry How not to hand winch Mindless Bit Spew As reference material Let's Encrypt on an HP LaserJet M553, renewed from a Proxmox container Oct 9, 2026 HP LaserJet Enterprise printers ship with a self-signed certificate and no ACME client. Mine now serves a Let’s Encrypt certificate on its admin page and on IPPS/AirPrint, and a small Alpine container on Proxmox renews it every two months without me touching the printer. Here is how. The short version: One setting in the printer’s web interface, Use for Network Identity , covers both HTTPS on 443 and ipps://…/ipp/print . The certificate is issued elsewhere with a DNS-01 challenge. I run certbot in an LXC container on Proxmox. The key must be RSA. The firmware rejects EC private keys outright. Upload is a pas
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