[홈서버 구축] ssh 무차별 공격 막기

‼️ fail2ban 꼭꼭 설치하기

sudo journalctl -u ssh -n 100

rbzhy2on@raspberrypi:/etc/fail2ban $ sudo fail2ban-client -d
2025-04-13 19:44:16,720 fail2ban                [729527]: ERROR   Failed during configuration: While reading from '/etc/fail2ban/jail.local' [line 283]: option 'port' in section 'sshd' already exists
ERROR: The configuration stream failed because of the invalid syntax.
2025-04-13 19:44:16,721 fail2ban                [729527]: ERROR   Init of command line failed