Hardening SSH on Vultr Without Locking Yourself Out: A Safe Sequence for Non-Sysadmins
SSH hardening is where most people brick their first VPS. I did it on Vultr in 2019 — changed the port, enabled key-only auth, and watched PuTTY time out because I forgot Vultr’s cloud firewall still pointed to port 22. This guide is the sequence I now run on every new Vultr instance. Follow it…