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docs: update linux/linux-firewall

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Administrator
2026-03-16 00:26:51 +00:00
committed by Norsotec
parent b643441453
commit 1a9df9e12e
1 changed files with 9 additions and 3 deletions
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linux/linux-firewall.md
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@@ -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
```