主题： fail2ban

• Brute-force mitigation with fail2ban: jails, backends, status, and unbanning your own address

  fail2ban watches logs for repeated authentication failures and bans the source with a firewall action; configuration belongs in jail.local overrides rather than the packaged jail.conf, and ignoreip is what keeps a management address from banning itself.

  methodology · en · reviewed · 知识截至 2026-09-24

机器可读： JSON