nixCraft Linux Sys Admin Blog

Identify and Verify Gnome Users Based on How They Type

Posted: 04 Apr 2008 02:05 PM CDT

This tutorial explains GDM (GNOME Display Manager) modification to support user verification through keystroke-dynamics processing. Modified GDM allows only you to login. If you go ahead and tell your password to a friend. They still won’t be able to log in using GDM without knowing the precise method of typing required when entering your user name.

You can create and store a one-way encrypted hash of your keystroke patterns when entering your user name. Add code to GDM to read current keystroke patterns and permit a user to log in when the characteristics are a match.

Many commercial products today provide two-factor authentication on Linux systems. These technologies generally require the purchase of additional hardware and create a closed implementation unsuitable for many environments. The code and processes presented here allow you to implement a low-cost authentication-input system based on the characteristics of how a user types his password into the GDM. Moving beyond examples and into implementation, the modifications to GDM presented here allow you to enhance the security of your computer.

=> Identify and verify users based on how they type

Linux Check The Health of Adaptec RAID array

Posted: 04 Apr 2008 03:49 PM CDT

Q. How do I check the health of Adaptec RAID array under Fedora / CentOS / Red Hat Enterprise Linux server from a shell prompt? A. First, visit official Adaptec web site to download utilities. You can also install utility software from CD / Floppy disk. Install the rpm file. arcconf command To view and modify other [...]

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