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docs: update linux/linux-firewall

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2026-03-16 00:24:13 +00:00
committed by Norsotec
parent 5e3c9cbc29
commit b643441453
1 changed files with 12 additions and 3 deletions
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linux/linux-firewall.md
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@@ -2,7 +2,7 @@
title: Firewall Linux title: Firewall Linux
description: Firewall Konfiguration unter Linux description: Firewall Konfiguration unter Linux
published: true published: true
date: 2026-03-16T00:20:01.180Z date: 2026-03-16T00:24:10.718Z
tags: firewall, linux tags: firewall, linux
editor: markdown editor: markdown
dateCreated: 2026-03-15T23:56:44.726Z dateCreated: 2026-03-15T23:56:44.726Z
@@ -44,12 +44,21 @@ Die Maschine neustarten und danach prüfen:
sudo ufw status numbered sudo ufw status numbered
``` ```
## Empfehlungen Firewall Einstellungen ## Empfehlungen Firewall Einstellungen
1) SSH Bruteforce Schutz 1) Default Policies setzen (sehr wichtig)
```bash
sudo ufw default deny incoming
sudo ufw default allow outgoing
```
2) SSH Bruteforce Schutz
```bash ```bash
ufw limit 22/tcp ufw limit 22/tcp
``` ```
2) Das blockiert automatisch IPs bei Login-Angriffen 3) Das blockiert automatisch IPs bei Login-Angriffen
```bash ```bash
apt install fail2ban apt install fail2ban
``` ```
4) Logging vom default low zu medium erhöhen
```bash
sudo ufw logging medium
```