Fail2ban ssh: Unterschied zwischen den Versionen
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| Zeile 33: | Zeile 33: | ||
`- Banned IP list: 10.0.1''xx''.2 | `- Banned IP list: 10.0.1''xx''.2 | ||
</pre> | </pre> | ||
| + | |||
| + | *'''iptables -nvL''' | ||
=Alles unbannen= | =Alles unbannen= | ||
*fail2ban-client unban --all | *fail2ban-client unban --all | ||
Version vom 7. August 2023, 21:29 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 sftp
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