virtualbox.org

How to prevent otheres from changing my computer DNS? OpenDNS is really a great website to prevent internet abuse. But the problem is what if someone else using my computer changed the DNS setting? In other words, removed the numbers of the site and used another. In this case OpenDNS will not work and consequently, all previously blocked domains will open and work. So, my question is how to prevent others from doing that?
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market samurai ~ marketsamurai ~ marketsamurai.com

Use passwords that no one else knows and never leave the host or guest open and not locked when you are away.
This is an OS specific problem and outside the scope of the forum.