Tripwire is designed to detect modifications to files and directories and to alert you of any changes. Even though quiet a large amount of effort is needed to configure and run this program, it is very essential for high-profile systems that are exposed directly to the internet.
Tripwire works by storing important information about system directories [...]

These are some of the few things you can do if your system gets compromised by an intruder to the point that they have root access and have installed root kit in your system.

Disconnect your system from the network. Remove your system from the Internet and from your local network. You should literally unplug the [...]

To test your disk’s performance, use the hdparm utility. This program’s main purpose is to display and set various ATA parameters that influence performance. The program can also run basic performance tests. The -t parameter tests disk read speed, while the -T parameter tests Linux’s disk cache performance. The cache speed is important to [...]

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One of things that seperates Ubuntu (or Debian based distribution) from other Linux distributions is that it disables the root account. For other distros such as Red Hat and SUSE, you are prompted for root password when it’s needed to perform a job or execute a command. You just log on as root or change [...]