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Trick:How to harden Linux against local intrusions |
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Tuesday, 20 July 2004 |
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A local intrusion occurs when a computer is "cracked" by someone with physical access to a computer. This can be done with actual hacking techniques, or by exploiting built-in boot (failsafe) modes that your computer's operating system, bootloaders, and BIOS contain.
Since actual hacking methods are very uncommon due to the level of expertise they require, we'll limit our discussion to hardening the built-in boot modes. These modes are in place mainly to recover or repair a computer after a system failure or forgotten password. Because these necessary failsafes exist, physical security is the weakest layer of computer security, no matter what operating system is being used. You need to be logged in as root to perform these steps, with the exception of the BIOS changes. Read more at Linux.com |
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