From 1a9df9e12e89868087e07ea6acac95bf7633184c Mon Sep 17 00:00:00 2001
From: Administrator <office@norsotec.com>
Date: Mon, 16 Mar 2026 00:26:51 +0000
Subject: [PATCH] docs: update linux/linux-firewall

---
 linux/linux-firewall.md | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/linux/linux-firewall.md b/linux/linux-firewall.md
index c581c09..46362c5 100644
--- a/linux/linux-firewall.md
+++ b/linux/linux-firewall.md
@@ -2,8 +2,8 @@
 title: Firewall Linux
 description: Firewall Konfiguration unter Linux
 published: true
-date: 2026-03-16T00:24:10.718Z
-tags: firewall, linux
+date: 2026-03-16T00:26:49.413Z
+tags: firewall, linux, fail2ban, ufw, brutforce
 editor: markdown
 dateCreated: 2026-03-15T23:56:44.726Z
 ---
@@ -53,11 +53,17 @@ sudo ufw default allow outgoing
 ```bash
 ufw limit 22/tcp
 ```
-3) Das blockiert automatisch IPs bei Login-Angriffen
+3) Das blockiert automatisch IPs bei Login-Angriffen (fail2ban)
 ```bash
 apt install fail2ban
 ```
+Damit kann man überprüfen, ob fail2ban läuft:
+```bash
+systemctl status fail2ban
+```
+
 4) Logging vom default low zu medium erhöhen
+Die Logfiles findet man allgemein hier: `sudo less /var/log/ufw.log`
 ```bash
 sudo ufw logging medium
 ```