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Guides from the NOC

Written from running the hardware — what breaks, why, and the command that fixes it.

8 posts matching “tls” · Clear

All 8 Most read Troubleshooting 4 VPS 3 Domains 1
VPS Set Up an FTP Server on a VPS with vsftpd (TLS + Chroot)

Set up vsftpd on a bare VPS with TLS encryption and a proper chroot jail, and fix the passive-mode firewall issue that breaks most FTP setups.

27 July 2026 · 6 min · 20 views Domains MTA-STS & TLS-RPT Setup Guide: Stop Silent Mail Downgrades

Set up MTA-STS and TLS-RPT to stop STARTTLS downgrade attacks and get visibility into failed mail encryption - DNS records, policy file, and testing steps.

26 July 2026 · 6 min · 10 views Troubleshooting ERR_CERT_DATE_INVALID: Causes and the Fix

Either the certificate expired or your device's clock is wrong. One command tells you which, and the answer changes the fix completely.

31 August 2026 · 4 min · 29 views Troubleshooting ERR_CERT_AUTHORITY_INVALID: Causes and the Fix

The certificate is readable but the browser does not trust its issuer. Usually a missing intermediate certificate - here is the one command that proves it.

31 August 2026 · 3 min · 21 views VPS Install MinIO on a VPS: Self-Hosted S3-Compatible Storage

Install MinIO on your VPS for self-hosted S3-compatible object storage: systemd service, Nginx TLS proxy, bucket policies, and fixes for common errors.

12 August 2026 · 7 min · 10 views VPS Set Up K3s (Lightweight Kubernetes) on a Single VPS

Install k3s on a single VPS the right way: firewall rules, kubectl access from your laptop, ingress with TLS, and fixes for the errors that block startup.

27 July 2026 · 6 min · 27 views Troubleshooting ERR_SSL_PROTOCOL_ERROR: Causes and the Fix

Getting ERR_SSL_PROTOCOL_ERROR in Chrome? Learn why the browser can't even start a TLS handshake and how to fix it on cPanel, Nginx, Apache, or Cloudflare.

15 July 2026 · 6 min · 30 views Troubleshooting ERR_SSL_VERSION_OR_CIPHER_MISMATCH: Causes and the Fix

Getting ERR_SSL_VERSION_OR_CIPHER_MISMATCH in Chrome? Learn why it's a TLS handshake failure, not a bad cert, and fix it on cPanel, Nginx, or Cloudflare.

15 July 2026 · 8 min · 28 views