The document discusses securing Linux systems by securing the physical environment and bootloader. It recommends securing the room where the Linux computer is located, locking down the CPU case and BIOS to prevent booting from removable media. It also suggests disabling the Ctrl+Alt+Delete reboot shortcut and password protecting the GRUB bootloader to prevent unauthorized access and bootloader hacking attempts. Physical security of the room and computer case, along with logical security of the boot process are key focuses of the document.

1. Interact with Linux
Deep [in[security
knowledge
y3dips@echo.or.id

2. GNU/Linux?
• Ever heard linux?
• Ever heard GNU?
• So, Please explain GNU/Linux?

3. Please, Met Tux!

4. Security
• Why do we need security?
• Securing what?
• How to do that?

5. Physicalenvirontment
Secure the Security

6. {Physical Security
• Room Security (lock)
• CPU security (locak case, no
cdrom… else)_
• Bios Security
Disallow booting from floppy/cdrom/usb drive and
network