Fail2ban ssh: Unterschied zwischen den Versionen

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=Hydra installieren (Hacking Buch Seite 136)=
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=Hydra installieren (''Hacking & Security'' Seite 136)=
 
*'''apt update'''
 
*'''apt update'''
 
*'''apt install hydra'''
 
*'''apt install hydra'''

Version vom 7. August 2023, 20:58 Uhr

Hydra installieren (Hacking & Security Seite 136)

  • apt update
  • apt install hydra

Passwordliste laden

brute Force auf den Rechner

  • hydra -l xinux -P bad-passwords 10.88.201.21 ssh

sshd in fail2ban aktivieren

  • echo -e "[sshd]\nenabled = true\n" >> /etc/fail2ban/jail.local

fail2ban neustarten

  • systemctl restart fail2ban

Status checken

  • fail2ban-client status sshd
Status for the jail: sshd
|- Filter
|  |- Currently failed:	1
|  |- Total failed:	14
|  `- File list:	/var/log/auth.log
`- Actions
   |- Currently banned:	1
   |- Total banned:	1
   `- Banned IP list:	172.31.31.1

Alles unbannen

  • fail2ban-client unban --all