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Hier werden die Unterschiede zwischen zwei Versionen angezeigt.

--- fail2ban [31.01.2024]
hochrath [Beste Vorgehensweise]
+++ fail2ban [31.01.2024] (aktuell)
hochrath [Quellen]
@@ Zeile 226: / Zeile 226: @@
 </code>
+\\
+\\
+Nun kann man über die Log-Files sehr schön den Verlauf bei einem fehlerhaften Zugriff beobachten:\\
+**service fail2ban status**
+<code>
+root@raspberrypi3:/home/pi# service fail2ban status
+● fail2ban.service - Fail2Ban Service
+     Loaded: loaded (/lib/systemd/system/fail2ban.service; enabled; vendor preset: enabled)
+     Active: active (running) since Wed 2024-01-31 15:32:26 CET; 1h 1min ago
+       Docs: man:fail2ban(1)
+    Process: 23835 ExecStartPre=/bin/mkdir -p /run/fail2ban (code=exited, status=0/SUCCESS)
+   Main PID: 23836 (fail2ban-server)
+      Tasks: 7 (limit: 1595)
+        CPU: 5.115s
+     CGroup: /system.slice/fail2ban.service
+             └─23836 /usr/bin/python3 /usr/bin/fail2ban-server -xf start
+Jan 31 15:32:26 raspberrypi3 systemd[1]: Starting Fail2Ban Service...
+Jan 31 15:32:26 raspberrypi3 systemd[1]: Started Fail2Ban Service.
+Jan 31 15:32:27 raspberrypi3 fail2ban-server[23836]: Server ready
+</code>
+\\
+**iptables -L**
+<code>
+root@raspberrypi3:/home/pi# iptables -L
+Chain INPUT (policy ACCEPT)
+target     prot opt source               destination
+f2b-apache404  tcp  --  anywhere             anywhere             multiport dports http,https
+Chain FORWARD (policy ACCEPT)
+target     prot opt source               destination
+Chain OUTPUT (policy ACCEPT)
+target     prot opt source               destination
+Chain f2b-apache404 (1 references)
+target     prot opt source               destination
+RETURN     all  --  anywhere             anywhere
+</code>
+\\
+**fail2ban-client status apache404**
+<code>
+root@raspberrypi3:/home/pi# fail2ban-client status apache404
+Status for the jail: apache404
+|- Filter
+|  |- Currently failed: 1
+|  |- Total failed:     3
+|  `- File list:        /var/log/apache2/access.log
+`- Actions
+   |- Currently banned: 0
+   |- Total banned:     1
+   `- Banned IP list:
+</code>
+\\
+\\
+nun die Webseite nach fehlenden Seiten abfragen:
+\\
+**tail -f /var/log/fail2ban.log**
+<code>
+-01-31 16:36:58,105 fail2ban.filter         [23836]: INFO    [apache404] Found 192.168.178.36 - 2024-01-31 16:36:58
+-01-31 16:38:13,892 fail2ban.filter         [23836]: INFO    [apache404] Found 192.168.178.36 - 2024-01-31 16:38:13
+-01-31 16:38:14,032 fail2ban.actions        [23836]: NOTICE  [apache404] Ban 192.168.178.36**Fetter Text**
+</code>
+\\
+**fail2ban-client status apache404**
+<code>
+root@raspberrypi3:/home/pi# fail2ban-client status apache404
+Status for the jail: apache404
+|- Filter
+|  |- Currently failed: 0
+|  |- Total failed:     5
+|  `- File list:        /var/log/apache2/access.log
+`- Actions
+   |- Currently banned: 1
+   |- Total banned:     2
+   `- Banned IP list:   192.168.178.36
+</code>
+\\
+**iptables -L**
+<code>
+root@raspberrypi3:/home/pi# iptables -L
+Chain INPUT (policy ACCEPT)
+target     prot opt source               destination
+f2b-apache404  tcp  --  anywhere             anywhere             multiport dports http,https
+Chain FORWARD (policy ACCEPT)
+target     prot opt source               destination
+Chain OUTPUT (policy ACCEPT)
+target     prot opt source               destination
+Chain f2b-apache404 (1 references)
+target     prot opt source               destination
+REJECT     all  --  DESKTOP-PQ44AIL.fritz.box  anywhere             reject-with icmp-port-unreachable
+RETURN     all  --  anywhere             anywhere
+</code>
@@ Zeile 233: / Zeile 338: @@
+\\
+\\
 ==== Quellen ====
 https://wiki.ubuntuusers.de/fail2ban/\\
 https://www.digitalocean.com/community/tutorials/how-to-protect-ssh-with-fail2ban-on-ubuntu-20-04\\

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