Fail2ban ssh: Unterschied zwischen den Versionen
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| Zeile 9: | Zeile 9: | ||
=Angriff starten= | =Angriff starten= | ||
| − | *'''hydra -l gast -s 2222 -P bad-passwords sftp.lab1''xx''.sec | + | *'''hydra -l gast -s 2222 -P bad-passwords sftp.lab1''xx''.sec ssh''' |
=sshd in fail2ban aktivieren= | =sshd in fail2ban aktivieren= | ||
Version vom 8. August 2023, 09:09 Uhr
Brute Force auf den SFTP Server vom DNS Server aus
Hydra installieren (Hacking & Security Seite 136)
- apt update
- apt install hydra
Passwordliste laden
Angriff starten
- hydra -l gast -s 2222 -P bad-passwords sftp.lab1xx.sec ssh
sshd in fail2ban aktivieren
- vim /etc/fail2ban/jail.local
[sshd] enable = true port = 2222
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: 10.0.1''xx''.2
- iptables -nvL
Alles unbannen
- fail2ban-client unban --all