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Notes from production
Linux server administration, security hardening, and game server hosting - written from actual work, not theory.
2023-08-27
Securing a Linux Server with Fail2Ban and a Custom SSH Port
A plain-language walkthrough for locking down SSH on a fresh Debian or CentOS box: what SSH actually is, why bots keep knocking on it, and how moving the door and hiring a bouncer (Fail2Ban) fixes it.