Derivatives: Arabic | Spanish
Updated: 4 December, 2016
 by FreeFind
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Getting Started
1. Introduction
2. Switching to GNU/Linux
3. Getting openSUSE
4. Installation
The Fundamentals
5. KDE Workspace
6. Apps for Common Tasks
7. Security and Root
8. Terminal
9. Admin. Settings (YaST)
10. Installing Software
11. Software Repositories
12. MS Windows Interop
13. Multimedia Codecs
14. Browser Plugins
15. Graphics Drivers
16. Wifi
A: Help and Docs
B: Games
C. Under the Hood
D. History and Background
E: Getting Involved
GNU Free Documentation License
7. Security and Root
openSUSE and GNU/Linux in general is a very secure operating system, but when using any computer on the internet one should always be careful.

7.1 The Root User
One of the reasons GNU/Linux is very secure is that you normally don't work with administrator permissions - only the root user has full administrative permissions.

You'll be asked for the root password when installing packages or performing other administrative tasks outside of your /home/ folder. Unless you unchecked the checkbox during installation the root user has the same password as your normal user.

obs Only work as root when it's required.

7.1.1 Super User File Manager
To work graphically with system files that require root permissions you can launch the Dolphin file manager in super user mode.

super user dolphin

7.1.2 Working as Root User in the Terminal
The following command is used to switch to the root user in a terminal:
su -

tip Nothing will appear on the screen while you type your password. This is intended.

To stop working as root, enter the following command:

To run a single command as root you can use:
su -c "[command]"

You can read more about using the terminal in the next chapter.

7.2 Security Updates
When new updates are available you'll be notified by the update applet running in the system tray area.


7.2.1 Installing Updates in the Terminal
To install official security and bugfix patches only, run:
zypper patch

To install official patches as well as updates from 3rd party repositories, run:
zypper update

7.3 Firewall
The Linux-kernel has a built-in firewall, and openSUSE provides a graphical user interface for it. By default it allows all outgoing traffic and blocks any incoming traffic, hence you'll only need to change the configuration, if you want to run some network servers. The firewall is configurable in YaST, read about YaST in a later chapter.

7.4 Virus and Spyware
There's no need to run a virus scanner or to scan for spyware. Malware spreading via the internet and infecting normal home user systems are non-existant for GNU/Linux. Just make sure you yourself don't install and run software or scripts from untrusted sources, and you'll be safe.

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