Script for write blocked IPs to blacklist in Apache2
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#!/bin/bash

# Gebannte IPs abrufen und sortieren
banned_ips=$(fail2ban-client banned | grep -oE "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+" | sort -u | sed 's/^/Require not ip /')

# Einträge in Blocklist schreiben
echo -e "$banned_ips" > /etc/apache2/blocklist.conf

# Kurze Pause
sleep 1

# Apache2 neu laden
systemctl reload apache2



Config File for the "iptables" action
When use blocklist.sh directly fail2ban will hanging
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actionban = <iptables> -I f2b-<name> 1 -s <ip> -j <blocktype>
            /root/scripte/./blocklist.sh

actionunban = <iptables> -D f2b-<name> -s <ip> -j <blocktype>
              /root/scripte/./blocklist.sh




Config File for filter	      
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vi filter.d/guacamole.conf	      

[Definition]
failregex =.*Authentication attempt from \[<ADDR>,.*\] for user \".*\" failed.




Apache2 Config File
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        <Location /guacamole/>

                <RequireAll>
                        Require all granted
                        Include /etc/apache2/blocklist.conf
                </RequireAll>

                ProxyPass http://10.0.3.3:10000/guacamole/ flushpackets=on
                ProxyPassReverse http://10.0.3.3:10000/guacamole/
        </Location>