Fail2Ban (Linux)

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Installation

iptables- verhindert das iptables mitinstalliert wird.

sudo apt-get install fail2ban iptables-

Konfiguration

sudo mkdir /etc/nftables/

sudo vi /etc/nftables/fail2ban.conf

#!/usr/sbin/nft -f

# Use ip as fail2ban doesn't support ipv6 yet
table ip fail2ban {
  chain input {
    # Assign a high priority to reject as fast as possible and avoid more complex rule evaluation
    type filter hook input priority 100;
  }
}

sudo vi /etc/nftables.conf

include "/etc/nftables/fail2ban.conf"

Links

https://wiki.meurisse.org/wiki/Fail2Ban

https://wiki.ubuntuusers.de/fail2ban/

https://peters-christoph.de/blog/server/sicherheit-mit-fail2ban-erhoehen-postfix-ssh/

https://www.thomas-krenn.com/de/wiki/SSH_Login_unter_Debian_mit_fail2ban_absichern

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