First off let's start out by saying that Isolated VLANs and Private VLANs are two completely different things... they are not at all the same. To a network administrator, this should make perfect sense. However, a Server or Virtualization Administrator may or may not know the different. Because of this, I hear many non-network Administrators toss around the term "Private VLAN", when they actually mean to say "Isolated Vlan", or more specifically what they are referring to is a "Non-Routable" VLAN.
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Yum: Under the Covers with GPG Keys
Hey look at this spooky key. Don't be frightened little one. Nothing scary is going to happen to you here. This is a safe place. As a matter of fact, if you stick around you might just learn a thing or two. A thing or two about GPG! First off do any of us really know what GPG stands for? Well yes we do! It stands for GNU Privacy Guard. RPM Package creators use GPG to apply a digital signature to their packages. If a package was tampered with, then its GPG signature will no longer match what was placed in the original package.