---
title: 'Linux Hardening'
url: 'https://www.voidfox.de/linux-hardening'
markdown: 'https://www.voidfox.de/linux-hardening.md'
date: '2023-05-14'
description: 'Just a couple things to take care of to make it safer Automate Upgrades sudo apt install unattended-upgrades nano /etc/apt/apt.conf.d/50unattended-upgrades uncomment the following lines: "origin=Debian,codename=${distro_codename}-updates"; "origin=Debian,codename=${distro_codename}-proposed-upda…'
taxonomy:
  category:
    - blog
  tag:
    - Security
    - Linux
    - SSH
---

# Linux Hardening

[ Hole ](https://www.voidfox.de/)      Linux Hardening    

## [Linux Hardening](https://www.voidfox.de/linux-hardening)

  [Security](https://www.voidfox.de/tag:Security#body-wrapper) [Linux](https://www.voidfox.de/tag:Linux#body-wrapper) [SSH](https://www.voidfox.de/tag:SSH#body-wrapper)  

Just a couple things to take care of to make it safer

### Automate Upgrades

> sudo apt install unattended-upgrades
> nano /etc/apt/apt.conf.d/50unattended-upgrades
> uncomment the following lines:
> "origin=Debian,codename=${distro\_codename}-updates";
> "origin=Debian,codename=${distro\_codename}-proposed-updates";
> sudo dpkg-reconfigure --priority=low unattended-upgrades

### /etc/ssh/sshd\_config changes

- change Port
- PermitRootLogin no
- AllowUsers only\_those\_you\_trust
- PasswordAuthentication no
- Fail2Ban

### Firewall Whitelist

- Block ICMP and everything else
- allow the necessary stuff

I'll keep adding stuff to this Page until im satisfied,
but dont expect this to actually make your system 100% safe.. there's never 100%

 [ Previous Post](https://www.voidfox.de/git-cheat-sheet) [Next Post ](https://www.voidfox.de/linux-performance-observability-tools)

#### Related Posts

- 70 

     [Distro Hopping](https://www.voidfox.de/distro-hopping "Distro Hopping")
- 50 

     [Single Disk Data Migration to ZFS Mirror](https://www.voidfox.de/zfsmigration "Single Disk Data Migration to ZFS Mirror")
- 50 

     [Linux Shell Tools](https://www.voidfox.de/shell_tools "Linux Shell Tools")
- 50 

     [Linux Performance Observability Tools](https://www.voidfox.de/linux-performance-observability-tools "Linux Performance Observability Tools")

#### Random Article

 [ I'm Feeling Lucky!](https://www.voidfox.de/random)

#### Popular Tags

  [CheatSheet](https://www.voidfox.de/tag:CheatSheet) [Linux](https://www.voidfox.de/tag:Linux) [ZFS](https://www.voidfox.de/tag:ZFS) [Storage](https://www.voidfox.de/tag:Storage) [Virtualization](https://www.voidfox.de/tag:Virtualization) [Distro](https://www.voidfox.de/tag:Distro) [Weechat](https://www.voidfox.de/tag:Weechat) [Nginx](https://www.voidfox.de/tag:Nginx) [SSL](https://www.voidfox.de/tag:SSL) [Config](https://www.voidfox.de/tag:Config) [Security](https://www.voidfox.de/tag:Security) [SSH](https://www.voidfox.de/tag:SSH) [Tools](https://www.voidfox.de/tag:Tools) [Shell](https://www.voidfox.de/tag:Shell) [Git](https://www.voidfox.de/tag:Git) [Fun](https://www.voidfox.de/tag:Fun)

---

## Navigation

- Parent: [Hole](https://www.voidfox.de/index.md)
- Previous: [Linux Performance Observability Tools](https://www.voidfox.de/linux-performance-observability-tools.md)
- Next: [Git Cheat Sheet](https://www.voidfox.de/git-cheat-sheet.md)